Jimbo, I did the math on the weight of air per cubic foot given the temperature and boost pressures you showed. At a temperature of 180 and a boost pressure of 10psi over atmospheric, the weight of one cubic foot of air comes out to 0.104209638 pounds. At a temperature of95 and a boost pressure of 8 psi over atmospheric, the weight of one cubic foot of air comes out to 0.110439335 pounds. That is an increase in density of 5.978043%.
and since 8 psig is about 8+14.7 psi and 10 psig is about 10+14.7 psi you get a pressure difference of about 8% so if the difference of density is 5.9% as you said you get a "loss of 2.1%" but at that point the lrecision of the gauge comes in to play and it probably end up beeing the same mass of air moved around just at a better temp
My stage 1 srt4 made around 17~18psi of boost . I installed a bigger front mount air to air and boost was 15~16 psi. With an aftermarket wastegate actuator was able to gain that lost boost back
@@Antopc2I think you misunderstood the mass of air went up 6% the volume went down. That's good not a 2.1% loss. Engine hp is generally pretty close to lbs per min of air times 10. In our engine programs we've found you can get a bit better and a bit worse but it's never a huge difference so it's a great rule of thumb. He realized a 6% gain in density if it was moving let's say 10lbs per min or about 100hp and he saw a 6% gain in density regardless of boost pressure he should see about 106hp now. At his low boost levels the gains are just beginning as now he can turn it up once he has better control of fuel and boost but I still think a turbo added in compound would be the way to go next.
You should take more credit for this. You've situationally engineered a diesel generator engine into running an old honda insight. Supercharged and intercooled. And the engine didn't have either in it's intended application. And definitely wasn't in an old Honda hybrid.
Jimbo, glad you saw my past comment on the GM IAC motor. From my experience with these, they seem to have about 256 steps, end to end, and they can handle a pulse duration of 10 ms, thus 100 steps per second. You could probably use the stock IAC valve as a boost regulator. The cone end fits into a hole about 3/8” in diameter in its stock configuration.
Wow Air Idle control valves, computer controls, This car is almost NASA quality build 😂 I have a suggestion for passing lane performance, a high pressure air tank with a rocket nozzle pointed backwards, a big red panic button, and a dump solenoid . 🎉
Hey robot cantina, about your camera vibration issue... Stiffening the mount is actually the opposite of what you want to be doing (*if you are using a pole mount that mounts the camera by jamming itself between the floor and ceiling of the car, yes you want that to be as stiff as possible, I am referring to how you mount your camera to that pole here). The stiffer the mount, the more vibration will get transferred from the body of the car (or the mounting pole) into the camera, leading to the awful vibration artifacts on video. The ideal would actually be to do the opposite, mounting the camera in some kind of shock mount to decouple it from the vibrations of the car (or mounting pole).
Cooler air is more dense, therefore you are still forcing the same volume of air into the engine but at a lower pressure and temperature. The MPG stayed the same because (I'm assuming here) the fuel adjustment was the same. I love your little projects and really look forward to seeing how your fuel adjustment setup works out.
Ah, you are ahead of me-that's what I realized last night. Adding the intercooler didn't force any more air into the engine; it just cooled it. All those little oxygen and nitrogen atoms were just bouncing around in there a little less vigorously. I wonder what would happen if Jimbo were to raise the boost pressure to the previous level with the intercooler in place and ran the same test. Probably just less smoke. But once he can adjust the amount of fuel he can inject on the fly, along with varying the pully sizes on the supercharger he can test all the relevant variables. One variable at a time! This is all so interesting, I kind of understand how turbocharging/supercharging works in a gasoline engine, it never occurred to me how diesel might be different.
Jimbo, its not about boost, its about manifold air density. Take a look at a few of Banks' videos on this topic. A lot of his killing a duramax and building a diesel monster truck videos go over this I think. The acceleration test should be interesting. Just remember PV=nRT.. if you increase temperature in a fixed volume system, pressure will increase.
You should consider a closed loop stepper motor. A closed loop motor has the position encoder built into the stepper driver attached to the back of the motor. This allows the driver to move the motor exactly the number of commanded steps even if the motor itself loses a few steps. Also there should be a way you could add a position encoder to the idle air controller you are using so the microcontroller knows where it is immediately at powerup.
Impress the ladies 😂, "oh my ex had one of those fake Honda insights", new boyfriend with a regular Honda insight" what do you mean?". "oh well it was an intercooled supercharged 3 cylinder Kubota diesel with a Saturn transmission." New boyfriend looks off in the distance knowing that she's settling for him
@@will7its Dodge: Ford did something right, COPY IT! Ford: GM did something stupid, COPY IT! GM: I'ma be my own worst enemy until I die. Toyota: We do everything right but read the market. Nissan: We build stuff too. International: We build stuff to last even if it kills us.
@@will7its I'd be impressed if a ford passed my 440 Dodge not butt hurt. As far as teasing goes I couldn't care less. The ford guys really don't have much room to talk crap about anyone.
Like many other things in life, you have "rule of threes" or "iron triangle" situation. Sure, you didn't change performance or economy, but you increased longevity. Love this stuff btw, keep it up
I always look forward to your videos, Jimbo. We went from dropping a simple small diesel into a Honda to creating a cool project to some pretty technical things under the hood. What a project and a great learning experience! I am already thinking about the next project and everything we have learned from this current Honda. I love the data! Keep up the great work! This is the best series on UA-cam!
at 16:51 you have some empty bolt holes near the belt why not put in a belt tensioner for that purpose and for getting the belt away from the plastic piece its rubbing
This is my inspiration to build a bug out mobile for ultra milage. My thoughts are a 2 stroke engine on a basket tricycle. Thanks for these regular uploads
As Keven Banks says it's not about boost it's about air density. If you drop air temp you have to increase air density. And since boost is a measure of restriction not necessarily power addition. There for the reason you saw a drop in boost was because the air density increases and the motor was actually able to consume the air that was being forced into it. This means the real reason you didn't see a difference in fuel economy was because you had inadequate fuel to actually use the extra 2 psi of boost you consumed. So once you fix the fuel regulation on the motor you will see a change in fuel economy. What would really benefit this car would be a wideband for data collection of the actual AFR ratio.
@@Bangbug19 no, I'm saying that the overall pressure that the boost gauge is reading is the restriction in the intake pipe. This is the one weakness of a boost gauge is that they can be manipulated by air density so easily. Because as air gets hotter it expands and becomes more pressurized, resulting in a higher boost number. But that pressure is technically a pumping loss because the more pressurized the air becomes in the intake tube via heat, the harder it is for the motor to consume and get the most potential power out of combustion. The reason it dropped was not because the supercharger was actually making 10 psi of boost but rather it was making closer to 7 to 8 psi but the heat from pressurizing the air was causing thermal expansion, artificial raising the boost level to 10 psi. And the reason he couldn't see any difference in fuel consumption is because of the fuel limitation he is hitting. Once he can increase the fuel he will be able to use that extra 8 psi of boost to result in an actual performance gain. If he had an air/fuel ratio gauge I guarantee we would see the car running more and more lean as he keeps increasing the boost.
So he's not using 8 or 10 psi now. Amazing. If only he had a temp gauge too. If only he was adding an intercooler. If only he had run up the rack. If only he had a UA-cam channel like you have doing random experiments to only be told that boost is only a measure of restriction! Hopefully he can get back to no boost for no restriction so he can make all the power.
@@narwhalman ahh yes a scientific world where a measure of pressure differential is a bad thing. I guess thermodynamics have changed since I was in uni. Surprised everyone everywhere in all boost applications measure it still, all these idiots. They must be as old as me!
The temp dropped, so the volume of air dropped as well, lowering the pressure. Measured as boost pressure . The same amount by weight of air was moved just smaller volume and thus lower pressure.
Erm… no. Volume of air is dictated by the volumetric efficiency of the engine and supercharger. Temp drops, so density increases as does mass. The pressure drop is a consequence of flow restriction.
Exactly, the fact that all the other data stayed the same but there was a 2psi drop in boost is the real clear verification that the same mass of air was used. Gail Banks did a real good job of explaining it in one of his many data geeking out videos, far better than I could explain.
This is simply brilliant! You may have already considered it, but I think at some point you should figure out a very common lightweight vehicle that people could buy for very cheap, say a late '90s to early 2000s Honda Civic or Toyota Corolla. They could pull out the motor and install a cheap harbor freight motor or something. You could sell specialty parts or simply just list out where people can buy everything. You could have various versions of whether someone would only commute locally to have more power or longer distances to have better efficiency. This would give young tinkerers that don't have much money a way to get on the road :)
Boost losses should be due to flexible lines, as they dynamically change volume as boost pressure increases. In a perfect world, the Cantina would have an array of v- bands and stainless piping. Love this series, and your real world engineering solutions.
This is the kind of content I love but seems so rare these days. I was just tuning the idle air control earlier on one of my cars with tuner studio, what a great application for one.
Man do i love the level of engineering and ingenuity it your vids jimbo .. being dissabled (just broke back wise)and a tinkerer myself , i love your vids bro and i am always anticipating sunday morning cantina 😅... and man that idle motor was a smart one on whoever thought that one ..mad respect .. anyways i will just ramble om with my adhd so i bid u adue jimbo and keep having fun bro .. ps my whole 400hp forged boosted miata runs off a arduino , so im super happy to see ya useing one on the build ... there are so cool what they can do and be made to make do ... anyways peace and love all keep it rad stay safe and build on... l8z all
Phenomenal! Installing the intercooler, not destroying something on the Insight, bringing in some exclusive Rolls Royce like wood, and finally bringing this project to the next century by preparing to add some electronics to the so far 100% mechanical diesel engine. I can't wait to see the next episode.
Might want to look at trinamic driver for the stepper motor the have a lot of nifty features like being able to tell when the motor is stalled for homing.
As if this series weren't good enough already....you're going and building a bespoke fuel control system and boost control system from scratch - coding and all. Mercy. While I can fairly competently diagnose and service this stuff in profession, there's no chance I could design and build it from the ground up. This is fantastic Jimbo!
You could put an H pipe at the top of the intercooler with a flap on a thermostatic switch to bypass the intercooler until charge temps exceed whatever number proves to be max ideal. Might even be able to do some blending if you use a mechanical bi metal spring to actuate the flap progressively
Just wanted to leave another comment mentioning that I enjoy getting to follow along your development progress on small engine shenanigans, especially the electronic control methods and monitoring. Thank you for bringing us along.
Fantastic stuff again. The amount of detail you 'gloss over' on our behalf is remarkable. Well done... it's still the "same old, same old" but the Same Old is fascinating each time. What a wonderful channel you have... I've seen everything you've put out and I feel like this is the tinkering I would be doing (not as well, more blood) if I had the circumstances to do it. Thanks for the vicarious energy you give me!
Maybe next year you'll take the cars over to California for OpenSauce! Some of the minds there would not only love to look at these creatures you've created but also probably have some brilliant ideas or might even find inspiration from them. It's funny how once you modify a vehicle to suit your tastes it sort of feels like it takes on a personality or certain feeling, for better or for worse.
You'd get a lot less of a pressure drop, and probably better performance with a water to air intercooler instead of an air to air setup on a supercharger. Especially with such a small setup. Bonus points if you can manage a Phenolic intercooler. Used to run a water to air phenolic intercooler on my supercharged project car. It was really effective.
They're also easy to fab. You can get a heater core for some vehicle that fits, and fab it into a mounting plate. For phenolic addition you just need to buy some sheets of phenolic, and fab them into the same hole/mounting shape (ideally on both intake and exit side). For the "radiator" part there are also plenty of easy options that you could source in the same way as the heater core to repurpose. Same with the pump. Lots of options there for electric pumps from repurposing too.
Been tied up all day and just now getting to sit down and watch the newest episode. Went ahead and hit the like button. I know it's gonna be a good one because.. well.. it's robot cantina lol
love your content. Sometimes, reinventing the wheel can be the right way to go, as you've shown us a few times. these parts that are already existing and easily obtained (cheap) are great resources for custom experimenters :)
Jimbo, you might have to put a boost gauge before the intercooler and see if it’s lower the boost because it’s cooling or it it’s a restriction. It’s it’s a restriction. The reason the fuel consumption stayed the same could be due to the engine being more efficient due to cooler charge air but the supercharger consuming more horsepower having to force air through the intercooler.
I'd say what hurt the fuel economy was the boost temperature. Let's keep in mind: When air is compressed, it becomes heated. And the hotter air becomes, the less oxygen it holds. So the more boost that's run, the more the IAT (Intake Air Temperature) is heated, unless a method of charge cooling is employed. And because air tends to create more pressure the hotter it gets... well, you get the picture. So seeing a drop in charge pressure due to the addition of charge cooling isn't a surprise. That said, the drop in pressure can allow a higher tune of boost to be employed, while retaining a reasonably cool charge temperature, which in-turn will allow more power to be produced or more complete fuel burning & lower EGTs, depending upon the amount of fuel enrichment seen in addition to the boost levels. Either way, we're looking at improved fuel efficiency, in one respect or another. 🤔
What may be happening with the pressure drop with the addition of the intercooler is added volume. Or, there is more space that the air has to occupy before making it to the intake. Think of it like trying to blow through a straw. And then blow the same amount through a garden hose. There is less pressure build up in the garden hose because it's larger. Or possibly it could be a mistepresentation of how much boost the gauge shows based on where your pressure sensor is. If it's after the intercooler and before the throttle, then the intercooler may be causing a restriction. If you checked the pressure before the intercooler it would verify both scenarios. Whether or not it's restriction or extra volume causing it. She's coming together quite nicely though. This content is refreshing and more informative compared to some others 👍
Another Great Video. I had to laugh about the Ford Comment. I really appreciate the electronic and Nerdy side of the system. I’m a gearhead that loves computers and gadgets, that’s why your Channel is great. Thanks Again for the Videos.
The lost boost with the intercooler was due to lower temps (cold air occupies less space and creates less pressure inside the same space), not any kind of restriction by the intercooler. That's what I have seen many times over and over again, so it's the norm, not an oddity. I said it before, think of the intercooler as a safety aid, not a HP aid. If you end up getting any extra ponies out of it then great, look at it as a bonus. Good luck and looking forward to newer automotive shenanigans. 😊👍
As always another fantastic video. Id definitely keep the intercooler just because of keeping the temps low. Heat kills engines, and not like you are trying to build a power house anyway. This set up would be amazing in a older jeep or small 4x4 for off road and trail riding. Whenever I can finally get a old flat fender jeep I will 100% be coping this set up.
Off top of my head, more boost really just means more Air, to stay at stoich more air = more fuel. the temp increase is super awesome, its essentially the same theory as Density altitude.. Overall this small diesel idea is fantastic.
Keep in mind on a diesel the AFR is super lean (22:1) and the leaner it is the cooler the exhaust gas temps are. Adding fuel boosts power, but it will damage the engine if too much fuel is added for an extended time. The gizmo will provide the best balance for fuel and boost.
For the dump valve you could add a pedal potentiometer to your existing accelerator pedal and use it to control a throttle butterfly valve from a fuel injected gasoline engine. I often see them on eBay for cheap. From Mercedes and VW vehicles.
So basically, an intercooler makes the air denser by cooling the air, letting you get more air for the same compression pressure. The air was fitting into a smaller space, but if you don't add more air and fuel then it's just running at a lower pressure for the same power.
The intercooler adds resistance to the supercharger they always lower boost pressure but the gains by the cooler charge temps outweigh the 2PSi drop in pressure.
Jimbo, I did the math on the weight of air per cubic foot given the temperature and boost pressures you showed. At a temperature of 180 and a boost pressure of 10psi over atmospheric, the weight of one cubic foot of air comes out to 0.104209638 pounds. At a temperature of95 and a boost pressure of 8 psi over atmospheric, the weight of one cubic foot of air comes out to 0.110439335 pounds. That is an increase in density of 5.978043%.
Thanks for doing the math. I was thinking the same thing was likely.
and since 8 psig is about 8+14.7 psi and 10 psig is about 10+14.7 psi
you get a pressure difference of about 8%
so if the difference of density is 5.9% as you said you get a "loss of 2.1%"
but at that point the lrecision of the gauge comes in to play and it probably end up beeing the same mass of air moved around just at a better temp
Dang it I should’ve checked the comments before doing the math out… at least I got essentially the same answer 👍
My stage 1 srt4 made around 17~18psi of boost . I installed a bigger front mount air to air and boost was 15~16 psi. With an aftermarket wastegate actuator was able to gain that lost boost back
@@Antopc2I think you misunderstood the mass of air went up 6% the volume went down. That's good not a 2.1% loss. Engine hp is generally pretty close to lbs per min of air times 10. In our engine programs we've found you can get a bit better and a bit worse but it's never a huge difference so it's a great rule of thumb. He realized a 6% gain in density if it was moving let's say 10lbs per min or about 100hp and he saw a 6% gain in density regardless of boost pressure he should see about 106hp now. At his low boost levels the gains are just beginning as now he can turn it up once he has better control of fuel and boost but I still think a turbo added in compound would be the way to go next.
You should take more credit for this. You've situationally engineered a diesel generator engine into running an old honda insight. Supercharged and intercooled. And the engine didn't have either in it's intended application. And definitely wasn't in an old Honda hybrid.
parts bin special
Jimbo, glad you saw my past comment on the GM IAC motor. From my experience with these, they seem to have about 256 steps, end to end, and they can handle a pulse duration of 10 ms, thus 100 steps per second. You could probably use the stock IAC valve as a boost regulator. The cone end fits into a hole about 3/8” in diameter in its stock configuration.
You can also do micro steps with the Arduino controller to get finer step rotations.
Hi, Thanks for the suggestion of the IAC motor. It looks like its going to be the perfect solution.
Loved the Rolls Royce comparison 🤣 get your grey poupon, we’re getting fancy!
Wow Air Idle control valves, computer controls, This car is almost NASA quality build 😂 I have a suggestion for passing lane performance, a high pressure air tank with a rocket nozzle pointed backwards, a big red panic button, and a dump solenoid . 🎉
I'm picturing Wily Coyote driving that contraption....., cool!
@@fishing945 Meep meep!
Hey robot cantina, about your camera vibration issue...
Stiffening the mount is actually the opposite of what you want to be doing (*if you are using a pole mount that mounts the camera by jamming itself between the floor and ceiling of the car, yes you want that to be as stiff as possible, I am referring to how you mount your camera to that pole here). The stiffer the mount, the more vibration will get transferred from the body of the car (or the mounting pole) into the camera, leading to the awful vibration artifacts on video. The ideal would actually be to do the opposite, mounting the camera in some kind of shock mount to decouple it from the vibrations of the car (or mounting pole).
A gimbal mount might help; not sure if there's a cheap-but-good one out there (just about all the gimbals I see tend to be quite pricey)
Cooler air is more dense, therefore you are still forcing the same volume of air into the engine but at a lower pressure and temperature. The MPG stayed the same because (I'm assuming here) the fuel adjustment was the same. I love your little projects and really look forward to seeing how your fuel adjustment setup works out.
you are right, its just safer for the engine and less heat is a good thing even though it didnt change the MPG, it is an improvement.
@@NimaSomehdiesel running 10psi is not unsafe like it would be in a gasoline engine
Ah, you are ahead of me-that's what I realized last night. Adding the intercooler didn't force any more air into the engine; it just cooled it. All those little oxygen and nitrogen atoms were just bouncing around in there a little less vigorously. I wonder what would happen if Jimbo were to raise the boost pressure to the previous level with the intercooler in place and ran the same test. Probably just less smoke. But once he can adjust the amount of fuel he can inject on the fly, along with varying the pully sizes on the supercharger he can test all the relevant variables. One variable at a time!
This is all so interesting, I kind of understand how turbocharging/supercharging works in a gasoline engine, it never occurred to me how diesel might be different.
You are becoming my favourite channel, I'm a retired Electrical Engineer, your work is most impressive.
Thanks!
This car never ceases to amaze. Enough horsepower to do the job, and serious economy
"Rolls Royce" - You just jinxed the reliability. 🤔
Better knock wood! 😂
😀
Sir, a Rolls Royce never breaks down! It merely fails to proceed.
@nerd1000ify If you ever look up the horsepower rating of a Rolls-Royce, it says "sufficient."
Jimbo, its not about boost, its about manifold air density. Take a look at a few of Banks' videos on this topic. A lot of his killing a duramax and building a diesel monster truck videos go over this I think. The acceleration test should be interesting.
Just remember PV=nRT.. if you increase temperature in a fixed volume system, pressure will increase.
You should consider a closed loop stepper motor. A closed loop motor has the position encoder built into the stepper driver attached to the back of the motor. This allows the driver to move the motor exactly the number of commanded steps even if the motor itself loses a few steps. Also there should be a way you could add a position encoder to the idle air controller you are using so the microcontroller knows where it is immediately at powerup.
Impress the ladies 😂, "oh my ex had one of those fake Honda insights", new boyfriend with a regular Honda insight" what do you mean?". "oh well it was an intercooled supercharged 3 cylinder Kubota diesel with a Saturn transmission." New boyfriend looks off in the distance knowing that she's settling for him
Well, at least you'd know it's a fine candidate for the Musket Ball Run.😉
"It's a Ford pretty much anything can pass one of those"
Definitely sounds like something I'd say. Ford guys are just too easy to poke fun at.
The Dodge boys get way more butt hurt when you do it to them though.....🤣
@@will7its
Dodge: Ford did something right, COPY IT!
Ford: GM did something stupid, COPY IT!
GM: I'ma be my own worst enemy until I die.
Toyota: We do everything right but read the market.
Nissan: We build stuff too.
International: We build stuff to last even if it kills us.
@@tcmtech7515 haha.....
@@will7its
I'd be impressed if a ford passed my 440 Dodge not butt hurt.
As far as teasing goes I couldn't care less. The ford guys really don't have much room to talk crap about anyone.
Full throttle in third gear in my van to go 60 up a hill.... powerful
Like many other things in life, you have "rule of threes" or "iron triangle" situation. Sure, you didn't change performance or economy, but you increased longevity.
Love this stuff btw, keep it up
I always look forward to your videos, Jimbo. We went from dropping a simple small diesel into a Honda to creating a cool project to some pretty technical things under the hood. What a project and a great learning experience! I am already thinking about the next project and everything we have learned from this current Honda. I love the data! Keep up the great work! This is the best series on UA-cam!
You know it's going to be a great day, when you see the new Robot Cantina video.
I love this channel. I’m not an engineer but I can’t stop watching engineering channels. Take something that not supposed to be and make it so.
at 16:51 you have some empty bolt holes near the belt why not put in a belt tensioner for that purpose and for getting the belt away from the plastic piece its rubbing
The size of everything is deceiving on video. The smallest idler I could find was huge and caused even more problems.
I may have commented on this before, but with the electronically controlled blowoff valve, the stupidcharger is going to become a smart charger. 😎
True, but stupidcharger sounds better. I'll have to do some wordsmithing if all this stuff actually works.
hehe 😄
Your work always impresses me. The ingenuity on these builds is so cool. Keep up the great work, Jimbo.
I would love to see you try out some water methanol injection.
I think it would be interesting to see how it performs!
Love the series, btw ❤
This is my inspiration to build a bug out mobile for ultra milage. My thoughts are a 2 stroke engine on a basket tricycle. Thanks for these regular uploads
Your computer contraption along with your ability to break it down to layman is quite impressive.
Supercharges intercooled three cylinder Kubota diesel with Rolls Royce inspired technology... hmmm
As Keven Banks says it's not about boost it's about air density. If you drop air temp you have to increase air density. And since boost is a measure of restriction not necessarily power addition. There for the reason you saw a drop in boost was because the air density increases and the motor was actually able to consume the air that was being forced into it. This means the real reason you didn't see a difference in fuel economy was because you had inadequate fuel to actually use the extra 2 psi of boost you consumed. So once you fix the fuel regulation on the motor you will see a change in fuel economy. What would really benefit this car would be a wideband for data collection of the actual AFR ratio.
So you're saying 10 psi won't go in but 8 psi will?
We're saying the same amount goes in by weight but at different pressure so there's the same same.
@@Bangbug19 no, I'm saying that the overall pressure that the boost gauge is reading is the restriction in the intake pipe. This is the one weakness of a boost gauge is that they can be manipulated by air density so easily. Because as air gets hotter it expands and becomes more pressurized, resulting in a higher boost number. But that pressure is technically a pumping loss because the more pressurized the air becomes in the intake tube via heat, the harder it is for the motor to consume and get the most potential power out of combustion. The reason it dropped was not because the supercharger was actually making 10 psi of boost but rather it was making closer to 7 to 8 psi but the heat from pressurizing the air was causing thermal expansion, artificial raising the boost level to 10 psi. And the reason he couldn't see any difference in fuel consumption is because of the fuel limitation he is hitting. Once he can increase the fuel he will be able to use that extra 8 psi of boost to result in an actual performance gain. If he had an air/fuel ratio gauge I guarantee we would see the car running more and more lean as he keeps increasing the boost.
So he's not using 8 or 10 psi now.
Amazing.
If only he had a temp gauge too.
If only he was adding an intercooler. If only he had run up the rack.
If only he had a UA-cam channel like you have doing random experiments to only be told that boost is only a measure of restriction! Hopefully he can get back to no boost for no restriction so he can make all the power.
@@Bangbug19 In a perfect world yes.
( And don't ask a scientific question if you don't want the scientific breakdown.)
@@narwhalman ahh yes a scientific world where a measure of pressure differential is a bad thing. I guess thermodynamics have changed since I was in uni. Surprised everyone everywhere in all boost applications measure it still, all these idiots. They must be as old as me!
The temp dropped, so the volume of air dropped as well, lowering the pressure. Measured as boost pressure . The same amount by weight of air was moved just smaller volume and thus lower pressure.
Erm… no. Volume of air is dictated by the volumetric efficiency of the engine and supercharger. Temp drops, so density increases as does mass. The pressure drop is a consequence of flow restriction.
Exactly, the fact that all the other data stayed the same but there was a 2psi drop in boost is the real clear verification that the same mass of air was used. Gail Banks did a real good job of explaining it in one of his many data geeking out videos, far better than I could explain.
Woodwork so fine you don't even know it's there. Classy.
Hey Jimbo, all clear as mud. Easier for you to say "Through the power of dark magic all engine adjustments are made".
This is simply brilliant! You may have already considered it, but I think at some point you should figure out a very common lightweight vehicle that people could buy for very cheap, say a late '90s to early 2000s Honda Civic or Toyota Corolla. They could pull out the motor and install a cheap harbor freight motor or something. You could sell specialty parts or simply just list out where people can buy everything. You could have various versions of whether someone would only commute locally to have more power or longer distances to have better efficiency. This would give young tinkerers that don't have much money a way to get on the road :)
thanks for the new video jimbo, this is a better birthday gift than my truck giving me a spun bearing
Haply birthday!
AWESOME JIMBO!!! Looking forward to the first 500 mile road trip!!!
Boost losses should be due to flexible lines, as they dynamically change volume as boost pressure increases. In a perfect world, the Cantina would have an array of v- bands and stainless piping. Love this series, and your real world engineering solutions.
This is the kind of content I love but seems so rare these days. I was just tuning the idle air control earlier on one of my cars with tuner studio, what a great application for one.
Love your work, your solutions and the humor is next to nothing, definitely one of the shining lights in UA-cam land!
Man do i love the level of engineering and ingenuity it your vids jimbo .. being dissabled (just broke back wise)and a tinkerer myself , i love your vids bro and i am always anticipating sunday morning cantina 😅... and man that idle motor was a smart one on whoever thought that one ..mad respect .. anyways i will just ramble om with my adhd so i bid u adue jimbo and keep having fun bro .. ps my whole 400hp forged boosted miata runs off a arduino , so im super happy to see ya useing one on the build ... there are so cool what they can do and be made to make do ... anyways peace and love all keep it rad stay safe and build on... l8z all
You are a very clever mammal 👍🥃🇦🇺
LOVE YOUR VIDEOS Hello from NJ. Keep it technical love the Arduino and stepper drive!
the technology side of this build is super interesting and learning how all this stuff works is great!
Happy coffee and Cantina
First cars and engines, now were getting into computers and microcontrollers? Jimbo. I love this channel man. You are awesome.
Nice to see that the "BoostGPT" project is coming along!
Phenomenal!
Installing the intercooler, not destroying something on the Insight, bringing in some exclusive Rolls Royce like wood, and finally bringing this project to the next century by preparing to add some electronics to the so far 100% mechanical diesel engine.
I can't wait to see the next episode.
Might want to look at trinamic driver for the stepper motor the have a lot of nifty features like being able to tell when the motor is stalled for homing.
Sunday is Jimbo day. Thanks for the great entertainment. 👍
Very cool. Intercooled, even!
Enjoyed the lesson on stepper motor operation. And the Ford joke.
Gm IAC motors are very handy gadgets. Time to visit the junkyard or parts store for a pigtail(s). The rainy season isn't over yet.
Great application of the AIC motors.
Great work.
An other way to cool down the intake air is waterinjection.
May be a nice future experiment.
As if this series weren't good enough already....you're going and building a bespoke fuel control system and boost control system from scratch - coding and all. Mercy. While I can fairly competently diagnose and service this stuff in profession, there's no chance I could design and build it from the ground up. This is fantastic Jimbo!
Thanks, Jimbo!
You could put an H pipe at the top of the intercooler with a flap on a thermostatic switch to bypass the intercooler until charge temps exceed whatever number proves to be max ideal. Might even be able to do some blending if you use a mechanical bi metal spring to actuate the flap progressively
Jimbo is playing with Arduinos again ❤
Just wanted to leave another comment mentioning that I enjoy getting to follow along your development progress on small engine shenanigans, especially the electronic control methods and monitoring. Thank you for bringing us along.
Friggin love it jimbo. Keep up the rad fusion of simple diesel and nerdy programming!
I love the search for solutions techniques. Very fun stuff.
Brilliant engineering and application of Technology!
You always make my Sundays jimbo, keep it up!
Thanks for a longer video. It makes a huge difference
Fantastic stuff again. The amount of detail you 'gloss over' on our behalf is remarkable. Well done... it's still the "same old, same old" but the Same Old is fascinating each time. What a wonderful channel you have... I've seen everything you've put out and I feel like this is the tinkering I would be doing (not as well, more blood) if I had the circumstances to do it. Thanks for the vicarious energy you give me!
Looks like my IAC idea is going to work well. Awesome job on making it work.
Maybe next year you'll take the cars over to California for OpenSauce! Some of the minds there would not only love to look at these creatures you've created but also probably have some brilliant ideas or might even find inspiration from them. It's funny how once you modify a vehicle to suit your tastes it sort of feels like it takes on a personality or certain feeling, for better or for worse.
Thanks for continuing with the electronic controls Jimbo! That motor looks very promising, I wonder how much improvement you can squeeze out!
You'd get a lot less of a pressure drop, and probably better performance with a water to air intercooler instead of an air to air setup on a supercharger. Especially with such a small setup.
Bonus points if you can manage a Phenolic intercooler. Used to run a water to air phenolic intercooler on my supercharged project car. It was really effective.
They're also easy to fab. You can get a heater core for some vehicle that fits, and fab it into a mounting plate.
For phenolic addition you just need to buy some sheets of phenolic, and fab them into the same hole/mounting shape (ideally on both intake and exit side).
For the "radiator" part there are also plenty of easy options that you could source in the same way as the heater core to repurpose.
Same with the pump. Lots of options there for electric pumps from repurposing too.
I'm nailed to the presentations.
Thanks! RSA.
Been tied up all day and just now getting to sit down and watch the newest episode. Went ahead and hit the like button. I know it's gonna be a good one because.. well.. it's robot cantina lol
love your content. Sometimes, reinventing the wheel can be the right way to go, as you've shown us a few times. these parts that are already existing and easily obtained (cheap) are great resources for custom experimenters :)
I love my Sunday morning video
Make the fuel control thingy have an idler for the belt. The 3d print looks just ripe for sliding a bearing over already.
this little project definitely impresses this chick, no need to add as many words as possible... although iit is fun to lol
Jimbo, you might have to put a boost gauge before the intercooler and see if it’s lower the boost because it’s cooling or it it’s a restriction. It’s it’s a restriction. The reason the fuel consumption stayed the same could be due to the engine being more efficient due to cooler charge air but the supercharger consuming more horsepower having to force air through the intercooler.
I'd say what hurt the fuel economy was the boost temperature. Let's keep in mind: When air is compressed, it becomes heated. And the hotter air becomes, the less oxygen it holds. So the more boost that's run, the more the IAT (Intake Air Temperature) is heated, unless a method of charge cooling is employed. And because air tends to create more pressure the hotter it gets... well, you get the picture.
So seeing a drop in charge pressure due to the addition of charge cooling isn't a surprise. That said, the drop in pressure can allow a higher tune of boost to be employed, while retaining a reasonably cool charge temperature, which in-turn will allow more power to be produced or more complete fuel burning & lower EGTs, depending upon the amount of fuel enrichment seen in addition to the boost levels.
Either way, we're looking at improved fuel efficiency, in one respect or another. 🤔
Now you are going next level! ❤❤❤
5:10 you sound like me with my 02 f250 7.3l diesel intercooled powerstroke lariat fx4 super duty 😂😂😂😂😂😂😂 the girls love me.
Nice to see you still going with the Kubota.
Jimbo! I am excited to see what is next
You can try to enable or disable OIS(stabilization) or change the framerate, I believe those two settings would help a lot
What may be happening with the pressure drop with the addition of the intercooler is added volume. Or, there is more space that the air has to occupy before making it to the intake. Think of it like trying to blow through a straw. And then blow the same amount through a garden hose. There is less pressure build up in the garden hose because it's larger.
Or possibly it could be a mistepresentation of how much boost the gauge shows based on where your pressure sensor is. If it's after the intercooler and before the throttle, then the intercooler may be causing a restriction. If you checked the pressure before the intercooler it would verify both scenarios. Whether or not it's restriction or extra volume causing it.
She's coming together quite nicely though. This content is refreshing and more informative compared to some others 👍
Sunday, the best day. Im late! Better get my coffee going. 😂
Another Great Video. I had to laugh about the Ford Comment. I really appreciate the electronic and Nerdy side of the system. I’m a gearhead that loves computers and gadgets, that’s why your Channel is great. Thanks Again for the Videos.
a light weight set up like this ... should appeal to many sensible people
That comment on Rolls Roys using wood! 🤣🤣🤣
fascinated to see how you calibrate the fuel rack limiter, ordering an idle air control motor so I can play along at home
The lost boost with the intercooler was due to lower temps (cold air occupies less space and creates less pressure inside the same space), not any kind of restriction by the intercooler.
That's what I have seen many times over and over again, so it's the norm, not an oddity.
I said it before, think of the intercooler as a safety aid, not a HP aid. If you end up getting any extra ponies out of it then great, look at it as a bonus.
Good luck and looking forward to newer automotive shenanigans. 😊👍
As always another fantastic video. Id definitely keep the intercooler just because of keeping the temps low. Heat kills engines, and not like you are trying to build a power house anyway. This set up would be amazing in a older jeep or small 4x4 for off road and trail riding. Whenever I can finally get a old flat fender jeep I will 100% be coping this set up.
I love how youre controling the fuel. Very clever
Off top of my head, more boost really just means more Air, to stay at stoich more air = more fuel. the temp increase is super awesome, its essentially the same theory as Density altitude.. Overall this small diesel idea is fantastic.
Keep in mind on a diesel the AFR is super lean (22:1) and the leaner it is the cooler the exhaust gas temps are. Adding fuel boosts power, but it will damage the engine if too much fuel is added for an extended time. The gizmo will provide the best balance for fuel and boost.
Jimbo. Your a very clever guy. Absolutely love this channel and look forward to the weekly video 😊
For the dump valve you could add a pedal potentiometer to your existing accelerator pedal and use it to control a throttle butterfly valve from a fuel injected gasoline engine. I often see them on eBay for cheap. From Mercedes and VW vehicles.
Jimbo I like your fabricobled uncomplicated bracket
Thanks for the explanation uncle Jimbo! A pleasure as always.
Impressive how much work you get done every time and also make a video about it!
Cheers.
Coming along nicely! Congrats!
So basically, an intercooler makes the air denser by cooling the air, letting you get more air for the same compression pressure. The air was fitting into a smaller space, but if you don't add more air and fuel then it's just running at a lower pressure for the same power.
Put a simple heat shield on your exhaust. 1/2 stand off piece of sheet metal. Make a difference.
Very reasonable approach with the components you chose.
The intercooler adds resistance to the supercharger they always lower boost pressure but the gains by the cooler charge temps outweigh the 2PSi drop in pressure.
Loved the ford joke. Nice work with the fabricobbled intercooler mount!
Love Sundays. This is fricken cool.
Fantastic! Love the new tech you're creating for this series!
Keep up the good work