Prepping John's Progressive Weber For BOOST!!!!
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- Опубліковано 6 жов 2024
- So we are modifying the progressive Weber for boost reference. This is the first time we have used this carb for a turbo application and are going to be learning along the way. From what we can see, that others in the past have done is just reference the power valve for boost and jet accordingly. This is the way we are tackling and may not be the best or correct way. This is an experiment so stay tuned to see what happens. Don't forget to like and Subscribe 😉.
John's channel
/ @vintagespeedvw7864 - Авто та транспорт
The music in the video is too loud
Unfortunately the editing software I used does not allow for the music volume to be adjusted. It is what it is.
@@MattLundquistVW If that is the case, there should be no music, so we can focus on what you are saying. (The music is distracting & talking over you at points of the video)
Hi! I know this is long shot!, Do you have tutorial on this? I really want a blow through set up on my 4g54 with a weber 32/36 carb. I always search in forums and also here in youtube but you're the only one post about turbo prep for weber.
Im glad you drilled that carb for me.
Lol so easy when I don't have to live with it haha
Giday, bit late but, I’m confused, if the vacuum is blocked the valve is open by default, no vacuum to close it?.
Wouldn’t you need to swap the spring for a pull type to hold the rod up, valve closed until boost pushes it down,
How much boost can the diaphragm take?
I’m running 20psi, A14 dato in my 53 Morris minor,
Cheers
I’m happy I watched this.. need to do the same modification
Cool can't wait to hear it run!
Decide whether your reviewing music, or teaching people important mechanical stuff. I want to run a boosted 32/36 Weber and am very interested in you knowledge. The music I can get elsewhere. As an ex vocational instructor I assume you its distracting. You have a good voice. Clear with good enunciation and great dialoge. Dont take away from your strengths. A video of you hauling ass across the desert is a different animal than instruction.
Thanks for the constructive words. But as I have replied to others about this , the volume of the music was much lower when I up loaded it to UA-cam it ( the music) became more pronounced. Not sure why that happened but I'm not putting music over where I talk in current videos.
Good knowledge to know.
Will be watching to see how this goes
I am planning to use a Weber 3236 downdraft progressive like this on an A14 engine Datsun project we have in a B210. Was just curious how this turned out.
I have researched using a Weber progressive in draw though setup for months and find little to NO info on the matter other than this video of yours but no follow up videos on this particular project. I just had two quick questions if you'd be so kind as to respond.
1. Did it ended up working out how you planned?
And
2. Why is this necessary to begin with? Could you not simply leave primary side alone and jet the secondary larger to add the fuel once the secondary opens or would that only serve to provide poor street drivability?
Also would this work better with a non progressive downdraft such as a Weber 38/38 because we have both...
Haha that was more than two questions I apologise 😅 Love the channel!!!
It worked well, you could watch the AFR get richer as boost increased. The one problem we had was a off idle flat spot, that I believe was because our manifold before the turbo was super short.
The reason to do the mod is that there are times when the carb is seeing high vacuum signals ( power valve is shut) and the motor is making boost. With the mod the power valve opens when the engine is seeing boost , no matter if the carb is seeing vacuum. Also by doing this you do not have to jet the carb so rich and can have good fuel economy.
As for a non progressive carb. I think it would be easier to tune and probably make more power( it's larger at 38mm). But both should work.
Hope this helps
@@MattLundquistVW makes perfect sense. Thank you for the quick and descriptive reply Matt!
@@MattLundquistVW I have also read that the throttle plates can get sucked back open briefly after a good pull. Did you ever experience anything like that?
I have not experienced that.
I have a down draft Weber 32/36 on my turbo 1776 with a T3 Garrett. I sent out cartrige for carbon seals, and running oil restrictor. 5lbs boost and 15" hg at idle. But the thing is still sucking oil on intake side under strong decel. I'm thinking of trying blow thru instead.
Awesome
interesting... maybe it's also good prep for draw thru supercharger (eaton etc) setup.. any experience? 😉
No experience with the Eaton set up. But it should work the same for that application.
@@MattLundquistVW thanks a lot 👍
Have you done a carbed supercharger setup? I'm looking to use an Eaton M90 on my Jeep 258. It has a Weber 38 carb...not sure what all I'm looking at for a "simple" supercharger setup. Did/have you had any luck?
I am not clear if this was a draw through or a blow through set up..... I am guessing draw through
Yes this carb was on a draw through turbo setup
Great video! Can I ask what jets you’re running in it?
Honestly I can't remember, I set this up for a friend awhile back and don't remember what it had.
Awesome information
What type of manifold is that ? Thank you
Unfortunately I don't know what that manifold came from. It was given to us from another friend.
I have a 3236 on a l28 engine what jetting I can use
Is it a weber.. or a holley?
Weber but there are the same. Holley had license to make them back in the day.
Can this be done on Weber 32 32 dmtr
I don't believe that carb has a power valve.
Can you use it in a blow through set up
I have not tried it, but I don't see why it would not work.
Was this for blow through or a draw through setup?
Draw through setup as the vacuum port always has high vacuum in a draw through set-up. In a blow through setup that port should see boost making the power valve open up.
@@MattLundquistVW thank you do you know of any mods I need to do besides block off and remove the choke for blow through on a Weber ?
Hey mate I'm doing blow through but the way I take this power valve as it needs vaccume to open it so are you putting the fitting on the intake side of the turbo to create vaccume ? Because on the boost side would push it closed correct ?
Hope it works for you. I would be scared of drilling my carburetor.
It's much easier when it's not your parts LOL
Struggling to hear what is being said 😢
Good info,but could be better without the background music
Where can I find that carb to turbo manifold in the video ?
I would like to know also lol. A friend gave us the manifold, so I don't know what it came on originally. Someone told us it maybe from an early 2.3 turbo Ford motor, but not sure. A company the deals with those motors could tell you maybe. Esslinger www.esslingeracing.com/
Might be able to help you find out what it is. If you find out please tell us we would like to know also.
Could I send you my carb and you modify it?
Sorry but I only work on my stuff. I made the video so others can do the mod themselves.
No worries. It’s a super cool video! I appreciate you putting the content out there.
Hope it works out for you, don’t know that I could drill a carb like that lol
JB weld can fix almost anything LOL
Matt Lundquist that is true my friend!
Quick question this seems to be draw through but dose this work on blow through ?
If it is your intention to educate Anyone then I suggest another video with the music so low you to strain to hear it. Or just do music video.
The video is almost four years old, not going to go back and make a video on a project that has been gone for three years.
You can turn on close captions and read what I was talking about.
Hi bro, where can i buy the reference boost valve for webber carburetors
What problem can JB weld not fix LOL.
great video 👍🏻 i have a question can that port be connected to the manifold or it has to go directly to the pipeing ? i’m trying to mod mine as well for tubro
It needs to go where it can sense boost and vacuum. So it needs to go after the turbo in a draw through setup. The intake end casting is a good place as some models had a vacuum port already there.
thanks man , i’m doing a blow thru carb definitely would help me tune the carb for good afrs !
I have the weber 32/36 and I will be going blow through on my 2.0L engine. I purchased the boost refrence power valve from turbo Gemini .com. is this modification needed to install that valve?
I have not seen how they are doing it so I can not say for sure. I looked at there website and all it says ( in very small print) "
New custom boost referenced power valve and carb body machining to suit new operation" . So they are machining the carb body for the reference also. Since there is only one passageway for the signal to the power valve, they are adding something similar to what we did. Hope this helps you with your build. Here is the link to the only part I seen mentioned the power valve mod on their website.
www.turbogemini.com/Blow%20Through%20Carby%20Kit.htm
What would I have to modify on a Weber 38 for draw through into an Eaton M90?
This is going on the Baja right? I love bajas.....
Sure is, and we are loving the Baja more Everytime we use it.
Hope it works out! what size is the engine? I'm thinking of building a turbo 1776 for my baja and have a Weber progressive that I got pretty cheap, might use it with this modification
It's going to be a 1600 dual port. The motor and whole project is a friend of mines, just covering some of what we are doing on my channel. The idea is to see how far we can push it with almost all stock parts. A 1776 turbo will be awesome, I'm collecting parts for my next motor a 1915 turbo. Stay tuned I will have more videos on the progress of both builds. If the carb doesn't work out we will let you know so you don't have to mess with it.
O almost forgot check out John's channel and Subscribe for more video and info on what he is trying to do ua-cam.com/channels/Esshpv6d_rq-Z2MnrcqxJA.html
Were you able to get that carb to work properly?
It's working good, still has a very small flat spot just off idle. Still need to play with it but other projects are in line first.
I’m building a stockish 1600 with a t3 turbo and I’m going with a Weber 32/36 just cause I have a new one laying around. Getting close to being able to run it trying to learn from what y’all have been doing
@@thegobblerproject2363 we had to increase the the accelerator squatter to get the off idle stumble under control.
Matt Lundquist doesn’t the power valve work as it should being that its draw through?.. and can you explain the accelerator pump mod, do you mean double pump squirter?
@@spongebobdriftpants The power valve will not work as when you come on to boost as the turbo is putting a bigger draw ( more vacuum) on the carb. The power valve normally only opens when vacuum comes close to zero. By modifying it in this way when the motor builds boost and the turbo is pulling massive air throw the carb, the boost pressure will open the power valve. As for the accelerator discharge nozzle we just drilled the secondary nozzle out ( was not drilled from the factory) so that both barrels would get fuel when you mat the throttle.
Question,is this a blow through set up? When I did my 1600 turbo draw through I just jetted the secondary bigger since it all on the vacuum side .
It's going on a draw through setup.
The reason for boost referencing the power valve is to keep the jetting on the lean side and only add fuel when needed on boost. Jetting it fat works, just trying to get the best of both worlds ( good mpg and 12.0 afr on boost).
Did you do this so you don't have to run a boost referenced fuel pressure regulator
No did it so we don't have to jet the carb super rich. When the engine comes up on boost the power valve will open and add more fuel. But when we are cruising down the road the power valve will be closed and the mixer will be leaner. That is the reason we did it.
@@MattLundquistVW thank you so much for clearing that up
@@trentonnavarro2362 No problem, the only time I have needed a boost reference fuel pressure regulator is when going blow through, this set up is draw through. I know some people have used boost reference fuel pressure regulator on Weber side draft draw through setups, but I have never used the Weber dcoe carb.
How about u turn the music off so people can hear what u say
You can put it on close caption. UA-cam will not let you modify a video once it is uploaded, especially a FIVE year old video.
Bro, turn the music off 📴
Can't , UA-cam made the music much louder than it originally was. But you can always turn it off on your end and put on CC.
Is this sufficient size for a 2.4 dual cam 4 cylinder turbo? It's a 16 valve ? Lol it's easier to pick carbs for v8s sorry I'm new what about the floats do they make plastic floats for that?
It will work but is on the small side for a 2.4l. yes it has plastic floats available for it.
@@MattLundquistVW I see I'm wanting to go with a holley 350 2bbl I can only wonder if the metering blocks and power valves are interchangeable between the 4bbl and a 2bbl and thanks for replying I appreciate your help
From my understanding the parts are all interchangeable. You might want to look at a Holley 390 four barrel. The primaries are smaller than a 350 two barrel and should provide nice street manners.
@@MattLundquistVW wouldn't a bigger carb cause issues with drivability and I cant seem to find a boost reference power valve for these besides I think there isnt a 390 4bbl that has mechanical secondaries I'll just stick with a junkyard 350cfm and hopefully that fancy power valve will fit I did just find a power valve but damn 70 dollars is alot it also says itll fit anything with a holley name on it so that's what oll try thanks again
@@Dannymclovin the 390 has small primaries and vacuum secondaries so it only pulls the air the motor wants. As for power valves you have to mod the carb to make it boost reference, involves closing off the vacuum port to the manifold and opening a channel to the power valve passageway. Hot vws magazine did it back in the early 2000's
Experiment it's the only way to learn.
Very true
Would of been nice to hear you. Lol
Note taken, the music volume is not adjustable in the editing software I used.
@@MattLundquistVW we all learned today then. Thank you for your vedios though.
Couldn't hear anything over that awful music
Terrible video don’t know what everyone else was watching I couldn’t hear anything you said why’s the music so loud
UA-cam made the music much louder than what it was when I added it, they done that to several of my videos. It is what it is, free information take it or leave it.