Dyno Test: 4BT Cummins Powered Ford F-150
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- Опубліковано 11 гру 2018
- Our good friends at Diesel Conversion Specialists sent us this 4BT Cummins diesel powered Ford F-150 truck to get a little more power out of it. And you know Todd, he has to double the power of anything he is working on!! Lets see if he did it!
Purchase the products Todd used to double the power of this Cummins below:
Injectors: bit.ly/2B8f6wO
Governor Springs: bit.ly/2CPeaxr
Turbos: bit.ly/2HBFGUB
Power Driven Diesel is a specialty performance shop engaged in the engineering and development of high performance turbo diesel technologies.
1 435 962 9555
powerdrivendiesel.com
/ powerdrivendiesel - Авто та транспорт
I had one of these worked over with an inline pump, worked up to about 130 horse in a generator application. Produced 75kw no problem, all day long in the boat it was in. 1800 rpm unit
Super interesting. Just use a clip-on mic next time you''re running the engine. It'll improve audio immensely.
Thanks always nice to see more on the 4bt’s
@@pddofficial please do.we would love more 4bt vids
.i want to put one in my 78 bronco but could use some help on making more power while staying fuel efficient..
4bt CPL1839 here - people don't put this engine into things so they can go "fast". I get 30mpg @60mph HWY all day long in a 77 Ferd 4x4 flatbed. Oh, and I can wheel off road all day long for pennies on the dollar, and I'm never hurting for torque.
That said, if someone wants to break out their wallet - I love to see what the little monsters can do!
Great stuff!
Got a video to show me how to convert... I got 70 f100 sb... sporting a 351w off a 79 tbird on a 95 pony z5 speed....
Can you help or a list off what is needed.
I need mileage
@@pddofficial - Great torque numbers, enough HP to keep you going, and great MPG!! What else do you need? Oh, yeah, about $300 worth of Dynamat so you can hear yourself think! ;-) All joking aside, it would be interesting to get a dB measurement on the highway with that truck. That little 4BT is pretty cool, man, pretty cool!!
These motors came stock in the F350 - in Brazil. I am running a 4bt in my 1942 Dodge Carryall - when I go out crawling on the weekend it costs me 15 -20 bucks, Same trip in my Chev trash truck costs about 80 bucks. Would I like a bit more power? Yep. I can run all day at 60 on the highway at 5 lbs of boost, but once I hit a hill the truck pretty much runs with the big rigs. Next upgrade I will shoot for is getting the intake air temp down and perhaps compound turbos. Interesting enough the exhaust temps dropped when I went from stock to an HX30 turbo, the temps may drop more with compounds. Only mod I have done to the pump is I machined up my own dynamic timing plate - That made the motor much quieter, enough that neighbours wanted commented that the truck was much quieter.
This is a tractor motor - really loud and vibrates like crazy - but the fuel milage is absurd. What I am looking for is some injectors that atomize the fuel better than the 30 year old ones it came with - there must be some advances over those years.
A bit like driving a big rig when using this block - from a stand still you are well into third gear before you cross an intersection :)
Diesel gang 🔥🔥
They came factory in the F100’s but I don’t think they came out in the 250 and 350 trucks down there.
I live in Brazil and I have a F250 1999 shortbed Cummins 4BT original, with 145HP, HX30w, VE pump, I put the fuel pin and put a HE221w holset and the ISB4 manifold that came out in the F250 from 2007 here, it already improved the performance however I'm thinking of a bigger turbo that doesn't have a slow spool, I thought of the Borgwarner K24 compressor 47.5mm and turbine 49.5mm I think I can get 250hp with it well fed with diesel, my engine turns around 3800rpm.
Excellent video and hello from Puerto Rico
The welcome 🙏
I'm in PR too. I'll help you with a 4BT swap if you help me with mine! going in a 2001 Land Cruiser
Todd looks real crammed in that cab in the ending scene, no wonder he likes to daily a mega cab!
170hp/420tq with HX35 out of my k20 with a NV4500 and 3.73. I average about 25 mpg on 33's.
Next truck is getting a 5.9 and a Eaton 10. 3.73 or 4.10 and 40's.
@@bladenrexroth2555
I like the 10 (592lbs) myself - the 6 (359/369lbs) is a little bit lite @ 220/230lbs. Less on the truck frame.
For heavy long haul the 10 is nicer unit... less room between frame rails, but it nicer as you can find a gear you need for the load being pulled.
That and it's a common trans in class 8 trucks...
nobody I've settled for the Eaton TX14607b. Gives me a lo lo, lo and a 0.75 OD. 1400 # of torque rating and is in the 500 # weight. A compound turbo cummins with about 450-500 hp and that eaton trans would put in some work
@@bladenrexroth2555
😁 - for 4wheeling I'm sure you choose well ---. Should be a great rocker... Enjoy your toy - should make your pride show from ear to ear..
I wonder what the tow abilities are with this truck. Only an f150, but an f250 isn’t that much more weight, being an obs, they have light bodies. Figure, a light flatbed, 6 speed manual and airbags would make a decent tow truck. Possibly tow as much as a dodge Cummins 2500.
Wish you’d take these trucks on a lil test drive for the video
5:00 dyno pull, 5:30 results... Thank me later
Did Todd need a crow bar to get out of that cab?
Nice work as usual! Go, PDD!
Can you and did you do delivery valves?
Great video. Keep um cummins
Cool video guys, thank you!
Great video thanks guys 👍
Another GREAT Video!! Liked !! Subbed !! Just as a frame of reference - when you say good mileage ... what would that be?
Nice vid and thank you I did learn something, that I'm glad I got a p pump six
Y’all are awesome
Sweet truck great video.
i need some one, what´s the better gear box for that truck? and i question if is neccesary change Crown and pinion of the rear axle?
Ive wanted to stick one of these in a 05 explorer sport trac for some time. Ive got 500k on my stock 4.0v6 towed the crap out of this truck with our boat and a 18ft car trailer doing various stuff. Ive alwsys wanted to know just what it would be like ...ive even looked in to a Hercules or even a 4-53 detroit.
GRAT, VERY STRAIGHT AND HONEST MAN
This reminds me of a 4BT in a delivery truck that runs 11s in the 1/4 mile
It has a big Power Driven Diesel sticker on the side in FL.? Odd stuff like that I can appreciate because of the out of the box thinking.!
So what’s the mileage estimations.? 22+mpg.?
Thanks again for You’re Information 👍
I would love for you guys to have more aftermarket or even oem parts for the bosch A pump it's a much cheaper alternative to a P pump for 4 cylinder applications and more than a ve pump.
@@pddofficial I have one torn apart now i can email you links and pictures to all of the info i have found for them. it had varnished delivery valves I was able to free up and an rsv governor with an electric solenoid bosh on the side of what looks like the afc housing on it.
I'm sure that truck made y'all thankful that people like the Kuntz brothers want a little more out of a little 4 banger
You did great. The 6.9 and 7.3 idi were rated at 180hp at the crank. Your putting 170 to the wheels with less fuel, less cylinders, and more torque. The 5.0 v8 in that was rated at 185hp at the crank. The 300 6 was 145hp at the crank. That engine is plenty
No, its not "plenty", not for modern traffic where everyone and their mom has a turbo charged economy car capable of 7.0 second 0-60s. Adequate for 1983 maybe but not 2020. 160 WHP in a truck that size is a dog. Total waste of money doing any kind of swap and investing time and money into. Just makes zero sense. V6 trucks in the past 20 years put more power to the ground than that.
@@Clapxiomatic I dont think speed was the goal in mind for this build. I think it was for reliability and fuel mileage. If everyone built the same thing, the car world would be boring. People seem to forget that trucks were made for work. Their not race cars.
This thing TOW enough,as in,towing
a car on a trailer or a boat.It does so
with upper 20s MPG and will do so
for decades to come.
@@Clapxiomatic you must have missed where he said 430 torque.
P pump is the way to go
Awesome video! I need to put my dakota with a 4bta on a dyno and see what it makes. I’d guess around 170hp. Has 3200 gov spring, fuel pin, 5x12 injectors and a hx30 turbo.
What year dakota? 2 or 4x4 ?
Michael McClure 95’ and it’s 2wd. Can follow my Instagram :thomas_vavra
I think loads of people would like to know how much the Vehicle weighs and some test drives before and after.
I have a 1999 6sp 24v Cummins and when I start it in the morning it starts like the day it was new but if I get it to 190 degrees “Operating temperature” but when I start it I will hit the key it will spin and not start then I let off and hit the key again it starts good what do you think the problem is P.S all stock
How much would it cost for me to do this to my 2006 f150?
Ok, so if they're dyno testing with a ve pump, why not try with a p pump? I do plan to do a 4bt swap in my bronco but I need at least 300hp. I plan to tow with it. Not overly concerned about fuel economy.
Because they obviously didn’t have a PPump handy
I’d love to have a truck like that
The 150hp 4bt had inline pumps on them not the ve pump. You guys need to find a inline pump for it I seen them make over 400hp.
They came with inline, P-pumps, and ve pumps depends on year, model, and use case.
@@TheDarkToes they also came out with an in-line Bosch A-Pump. Mine is a ‘98 with the A Pump, the A Pumps are tricky but can be driven on the road pretty well once you get used to the way the pump feeds fuel on its own like a full time automatic cruise control hahaha
Here in Brazil the F250 and F350 came with 4BT with VE pump, Hx30 turbo and intercooler and original 145HP with 3800rpm
It'll pull out stumps, if you're willing to wait till next week!
After several cases of miller lite and the luck of a 4bt with the ford bell pattern, we dropped it into a swb 2wd 85 f-150 with manual trans where a 300 6 came out. The truck came with a 3:55 open rear diff. No power mods to the 4bt bone stock the truck had more get up than those old pos 350 olds converted diesels as at the time dads old pos chevy 350 diesel was still rotting in the pasture i think gm replaced that engine 9 times and tiil this day i still won't but any gm junk. Back to the real truck it made 35 mpg at or below 65 mph. Take in mind it was no power house and you did not jump out in front of traffic as you would get your ass ran over. My friend who owned the truck drove it 55 miles one way to work for 8 years with the 4bt zero problems before he died. He claimed the truck had over 600,000 miles on it when we pulled the tired 300 i6, but he bought the truck new and drove it back and forth to work for many years and bitched about the 16 mpg it got with the 300 engine. The 4bt we installed was brand new on a pallet that was in a flood, it had the water in it for about a month and a half when he got it for nothing. The factory pre lube grease did a fantastic job on protecting the inside of that engine as it was nearly totally rust free inside. Tore it down inspected cleaned and put back together with new gaskets sent pump and injectors off, reworked and reinstalled. I have a 1981 dodge van a very rare shorty with a slant 6 i bought months ago for a grand,,,,, thinking about FOUR BEE TEEING IT if the funds allow but the slant has to go bye bye.
Interesting stuff, what ball bearing turbo did you put on it?
@@pddofficial GT28 ?
Might wanna minimize the Teamviewer window on the bottom right side of the Laptop screen when your showing the screen (I can see your Teamviewer ID) :-) Love the video's!
you would still need the password that randomly changes :) no harm there, but alittle cleaner video.
Looking to do a 4bt in my 77 Ford F-250 highboy.
That would be sweet
I have one for sale here in central Kentucky if anyone is interested, $1200
What causes it to de-fuel? Why does that happen?
What is the fuel mileage
Would be nice to see a 4bt p7100 pump
There are plenty around
whats the new turbo?
Is it possible to make 400 ft/lbs under 3000rpm with a 4bt p pump or ve?
Easily
Did you say you "pulled" in 5th gear?
I've alway heard and seen dyno pulls in third. Theoretically a correct pull for correct numbers would be done in 4th/1-to-1 gear...wouldn't you think?...then typical drive loses of 10-15%.
Am I making sense?
5th gear?...just thinking...if its .75 overdrive - you're losing 25% power in that gear. Am I correct?
Thank you.
PowerDrivenDiesel I can see that.
I have a 12-valve but for example I'll use my 427 that's in my 67....it was dyno'd at 598.8hp at 6100rpm with a 950 carb. Then we installed it in my stang. I didn't like the way it drove. I eventually put "my tune" on it with an 850hp , dropped the timing just a hair with fatter jets. Now , I'm sure the numbers aren't there now but it sure drives better with improved low-end control and torque. Warms up faster in cold weather.
I think a dyno is great but once the motor is back in the rig...it still takes additional tuning... seat-of-the-pants tuning if you will.
I don't know....I'm assuming diesels aren't like that.
Correct. mathematically, any gear would work'. Running in direct ensures the engine is fully loaded, fully fueled, and fully boosted. Also keeps the torque to the dyno low enough so slippage isn't a factor. HP to the wheels never changes, regardless of transmissiongear selected. (ok, there ARE tiny variances due to loss through the cluster) TORQUE to the wheels is what changes big time. A flywheel rating of say 400 ft lbs. is INCREASED by the ratio of the gear selected.., say 4.0:1 in first gear. So there is now 1600 ft. lbs headed to the axle, which then multiplies it another 3.5 to 4.5 times.. theoretically, the end of the axle 'sees' over 5000 ft. lbs of torque, in first gear. (don't worry, the 35 inch tire 'reduces' it substantially) Tire diameter is the TRUE final drive ratio! simply put, the taller the tire, the less torque felt at the ground. Horsepower however, remains the same. (sure, taller heavier tires make great power robbers) but I'm talking mathematically here.Do the same test again in direct, and the end of the axle 'sees' between 1500 and 1800 ft. lbs.., depends on axle ratio. The traction wheel has a much better chance of not slipping when in direct! HP is nothing but a calculation of torque and rpm How hard the shaft turns, and at what rpm...
I like to learn more about the 4 390 motor ?
Sure give us a call any time 435-965-9555
Can I swap the engine in my 2010 F150 4x4 lariat, with a diesel engine, just looking for more towing power/ torque and better mpg
If you have to ask, hell no.
Be a bit cheaper just to buy a diesel truck .
@@josephfoster3819 True :)
What ball bearing turbo did you guys put on it?
Garrett GT2860rs
I'm not very knowledgeable in the 4BTs but could a HX35 turbo on it? And is there a better pump to put on these little engines?
gears! add gear! peek torque is 1200 rpm ish, peek horse is 2400 rpm ish. happy medium 1650-2000 rpm. add a 8 speed transmission will do some magic with such a low end torque engine and you will find tons of fuel economy! adding more boost just makes its life expectancy shorter.
Nice video guys you did well 👍
But for my opinion there a 2 cylinders missing 😆
I put a 1st gen 6BT in my '78 Bronco. Turned up, of course. At only 5150 lbs, it gets 25 mpg highway, and has.... plenty of power. lol Video on my channel. 0-60 in less than 5 secs.
It’s just a little heavy the 4bt fits perfectly in the f150
@@thomashunt7717 the 6bt fit in the Bronco like it was made for it although the engine does weigh 1500 lbs wet.. it's been running in there for 10 years no problems I'm really happy with the setup
AmericanThunder Are you running larger tires or iron bumpers at that 5150 (Van Halen) weight? My dream is to build a mud/ overland rig with a 6bt but I believe my ‘94 already weighs 4500lbs with the 5.8W so a 4bt with more rattle might be better.
@@AmericanThunder did you run the c6 to it?
What is it about the Cummings that everyone swaps it?
it fits easily in many applications and can make good power for a lower cost
Versatility my friend, and it is a Cummins, not a CumminGs
FYI The 6.2 v8 makes................ 460ftlb torque!!!!!!!!!!!!!!!
A 4 cyl with HALF its DISPLACEMENT made nearly the SAME power.
It has no where near the same power. Unless you mean torque when you say power.
Anything with boost will make impressive torque, a turbo charged diesel with nearly 1L per cylinder, that sounds about right.
@@danh8302The last year of the 6.2 made 160hp and 285 torque.
So you are right the 4 banger blew the v8 out of the water.
@@lonsmithwesson1661 Oh i read that as the “6.2” as the new gas motor not the Detroit diesel. My fault.
Which is 420 hp and 460 lb ft, hence my power comment
@@lonsmithwesson1661 it is amazing how little power that 6.2 made in civilian trim. A 4-71 Detroit peak numbers are 152hp 400tq and the 4-71t is 190 hp 525 lb ft.
Perfect world what do you think the ceiling is on a streetable 4BT?
@@pddofficial and no smoke?
1000k+ likes, 25 dislikes. Obviously everyone loves a 4bt 🖖
I’m dying for some numbers on fuel economy.
I'm interested in that also
Why? Just why would you put a small 4cyl. in that truck?
Because it makes good power and it fits easily. And doesn't require modification of the suspension. 6bt is tight in the 90's fords and weighs over 1k lbs. A 350 w/heavy springs could take it, but a 150 with the TTB axle and such would be really straining under that load.
Wow 4 cyl 😱... I just thought I was counting wrong
What did you set the timing at?
Ve pumps LOVE more timing. These pumps actually have dynamic timing,unlike a p-pump.
@powerdrivendiesel I put a timing spacer on mine. Probably the single best modification I've made. The guys after power are advancing the pump, one tooth, and retarding the pump timing, in addition to the spacer,as a starting point, then tuning the fuel knock out. On something light, like that, or the scout, its would make for a fun truck to drive.
The aftermarket lift pump, and fuel pin made a noticeable difference, as well. A stock truck, with a turned up pump, will bring the fuel delivery pressure to zero, with the stock lift pump.
I laughed when it fired up, Skytrak forklifts at work have the same rattle. It's just the engine
Is the same industrial intake on our fleet of Gradalls
The truck weighs 5000-5200 lbs. If you're running 30+ psi of boost, make SURE you replace the factory head bolts with ARP studs. I learned this on my Bronco, the 6BT runs 32 psi, and it actually ripped one of the center head bolts in half. I've never seen that happen before, especially on a bolt that thick. lol
As for limited, the 4BT can be built up to 300-400 hp without a ton of money. The same way a 6BT can be built up to 500-600 hp. If you want to spend the money, a 4BT could do 500+ hp, it, like it's bigger brother, are incredible engines, with nearly unlimited aftermarket support and power potential.
What tubo and part number thks
This is a less common Garrett turbo, if you're interested call in and speak with Griff, he can fill you in on the smaller Garrett turbos.
Suggestion: Lav mic. I have this one and run it into my phone and it sounds really good. It'll help a ton when you're in the truck and the engine running.
www.amazon.com/gp/product/B00EO4A7L0/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1
Better suited in a Ranger I believe.
Way way to heavy for a little truck like that
@@teeg3275 - Tell that to the countless people that did it, search 4BT Ford Ranger. It's only 220 lbs. heavier than a 302. Yes the 4BT is heavier than what the truck was designed for but also true for the F150.
It’s not too heavy for a small pickup, I have one in my dakota. With v8 coil springs and upgraded shocks it rides nice and also gets 33mpg.
@@Itsa_Mea we put one of them In ram 1500 and it was terrible even with 3/4 ton suspension so idk maybe it's the truck or the dodges
Way too heavy for a Ranger. Unless you are talking about the old full size Rangers. The engine is right at 780 pounds. That's heavier than an all iron big block
That dash should be junk in no time with that paint shaker under the hood.
Paintshaker
But the alternative to these trucks are there original power plant the 5.0,5.8 In the F150 models none of which these motors made over 250hp in the truck version exception to the ford lightning of these year model trucks
I made 173/336 on our dynojet with a bone stock other than fuel screw turned up 140hp non intercooled 4bt with a nv4500. Your dyno must be really stingy or that pump is weak or something.
Our dyno is extreamly stingy.
How much would it cost (ballpark) to do this on a 2019 f250?
Why the hell would you want a 4bt in a f250???
Cammed LS What’s it to you?
shylildude I’m asking you, it Sounds retarted. Yes they had 4bt f250s in Brazil but, why tf would you want it when you can get a 6bt or better get a 6.7???
Cammed LS Obviously it’s lighter, cheaper, and more fuel efficient.
shylildude While some of that is true a 4bt is really not gonna be what’s best for that Application. Go right now on marketplace, Craigslist, eBay or anywhere you can find a used 4bt. I’ll just go ahead and save you the time but a 6bt will be ( majority of the time) cheaper than a 4bt, there’s just more of them. As far as weight goes why would it matter? A new ford 6.7 weighs in a 1,100lbs, that’s the exact same weight of a 6bt give or take a few. As for fuel economy it would be relatively close to a 4bt and not working near as hard, also obviously yields more power.
If i had the money I’d swap a built one into my honda pilot
That motor should have been offered in a 1/2 ton from factory.
We agree with that
It was down in South America
Great engine for a skid steer, way to shaky for a pickup. Should of built & turbo'd a IDI..
Paul Harper
Man, an IDI is not a good power maker. Aftermarket support is very limited and with the 7.3idi, you run the risk of cracking a cylinder is high because of it being a punched out 6.9idi.
Those engines are a poor choice to build.
Babylon falling
Hahaha..dude, calm down you have missed the point all together!
Look, im not saying it's not a good engine in stock form, but it's very limited. The IDI, once a turbo was introduced around 93 to 94 started to have a lot of issue's.
The DI 7.3s were a much better design all together. My 01 7.3Di was built to be able to handle loads and still be reliable. 400whp/700tq to the wheels and a built trans to hold it, did a fantastic job, and mine sure wasn't a trailer queen or a pavement queen. I could pull heavy loads while keeping my EGTs down and still getting awesome fuel milage. Empty, i was getting 24mpg on hwy and about 15 in town, and about 18 mpg pulling. This was a 4wd on 33s at that. So no, modding or building doesn't just mean power. If you know what you are doing and build it right, you'll have no issues, an IDI cant do that, im sorry dude the evidence is there that supports what im saying.
Just out if curiosity, how many diesels have you owned, or how many year's have you been a tech?
Babylon falling
That was my whole point about the IDI. While on paper, i don't have 30+ yrs as a tech, I do however have 14yrs, Still not as much as you.
To me, the 6.9 was a fair engine, and it could still handle boost at lower levels safely. With the punched out 7.3 version, with the cylinder walls being so thin, even the non turbo motor had issue's with it cracking. The higher cylinder pressure just put the engine in it's death bed for sure.
To me, yes, the 6.9 IDI was a reliable engine in stock form, much like the Detroit 6.2 in the K blazers, were great engines for the most part especially in regards to reliability, but, they still lacked pulling power to an extent. The old IDI engine's ( pick any manufacturer) had it's fair share of issue's.
Jump forward to today's engines, and the power to work with is unbelievable high. The new 6.6 duramax will come from the factory with 900tq to the wheels, that's massive! Now, if GM tries the AWD/AWS again, it could be a disaster. My point on this is, each engine, each manufacturer has it's pros and con's. Surely you can agree with that statement.
Aa for the EMP statement, im going to leave that one alone..lol
Well that was disappointing. I guess the P-pump is the only way to go. This modified 800lb engine made less power than a 600lb big block. It looks like the only reason to do this is for fuel economy. If that's the case then you're better off with a VW TDI. The cost of the swap, the work involved and the suspension upgrades required to make 160hp is way more than the amount a fuel you could ever save.
wvXvxvXvw its the cool factor haha
That thing sounds like a kubota
turn that thing off, we can't hear a word you're saying. I've owned 3 of the 5.9 dodges. great medium duty engines. was putting over 500 ft /lbs to the ground . pulled good.
That truck definitely needs a 6 cylinder...the 4bt belongs in something like a Ranger or S10.
bruh who the hells choses ve over p pump
Ppump are hard pump to acquire for the 4bt but we agree the ppump is much better
Lol my dad use to have a f1shitty like tht
Should have just done a stock 7.3l.
Yea I was thinking the stock 275hp stock. I want to do one of these in a ranger.
No lie I read that comment and sneeze and immediately said I'm allergic bulshit Cummins for life
.2nd
Teamviewer though?? Do you know anything?
Not bad for a four banger!. But a boosted ls with proper gearing can achieve 20+ hwy mpg with twice the tq/hp and ability to butt hurt diesel posers.
Why, WHY would anyone do this?
@The94GTC Because the engine is ridiculously heavy, makes no power, probably wont last long because 4BTs don't like to have their power hugely increased, all while polluting like a locomotive.
@The94GTC For as much as this conversion costs (along with the engine modifications), he could have swapped in a gasoline engine that makes around twice as much power, makes just as much torque (even though torque doesn't do anything for performance) and weighs a little more than half as much. There's no way that this engine is getting 30 mpg in this truck... maybe when it had 80 hp.
@The94GTC Torque doesn't do anything for performance... unless you want to argue against the laws of physics. Diesel is more expensive than gasoline, so you're paying as much as someone who gets 18 mpg with a gasser, which isn't that uncommon.
@@PistonAvatarGuy I just finished my conversion the engine is 130HP its no Performance monster but I can say this fully dressed comparison is only about 180lbs more all i needed was a ball joint adjustment because it is a twin i beam 4wd. it dose have a lot of low end torq so I still can get up to speed in decent time, but on the interstate Im not passing vary often. and My first run got 29MPG with the old 302 sitting in the bed, twice as much as the old engine that was getting only 14 mpg when I went to pick up the 4bt. the emissions test came in at half of what was required for this year of vehicle and only slightly more oxides then the gas engine that was in it. pulling my trailer and car with a weight of 6000lbs It was a lot nicer than the gas engines i've done this with in a f150 as the low torq kept me from having to hunt gears all the time, and I still got over 20mpg unlike the 302 that sucked gas at less than 10mpg with the same load and premium fuel that costs just as much. I also have the option of going WVO/bio with this truck now and that cuts my fuel costs down to $1/gal if I am willing to spend the time to make it. I also end up with a rebuilt motor that is well known for getting close to 1M miles before it needs a rebuild, has next to no electronics and can go 5 times as far before needing an oil change, and a range of over 1000 miles between fill ups. I understand what you are saying but this is a pickup and having 100HP and full torq at 1300RPM where the gas has to get up to 3500 before it matches can make a world a difference. HP is little more than a comparison of time vs. torque and as Diesels do not have the revs of a gas engine they often have less HP than a gas engine but this is why you have gears. as for upgrades that they are doing there will be a decrease in MPG but the diver can off set that with the way he drives, some people just like to know the power is there but rarely use it. you have to remember this is a lean burning motor that only meters fuel, unlike gas that meters both to keep a needed fuel ratio. for old tired 1/2t trucks and off road this conversion is perfect (even more so if your old truck has a SB ford as most 4bt's bolt right up.) if you don't want to by a new $50,000 dollar truck and have an inclination to turn a few wrenches yourself. Im in about $10000 the whole drive train is new or rebuilt and although It is more of a gamble than buying new If it pays off should last me a few hundred thousand miles. Im vary happy with my 4bt build.
@@natlkjh8677 Yeah, I guess if you're replacing a 1970s gasoline engine with a 4BT, it might make sense, but nothing competes with modern gasoline engines, not even modern diesels.
"...and premium fuel that costs just as much."
Why would you run premium fuel in an 302?
"HP is little more than a comparison of time vs. torque"
No, it tells you how much work you can perform over time, like the work of moving a vehicle. More power means more work can be performed in a given period of time, which can also be worded by saying that more power means more wheel torque at any given vehicle speed.
$10,000 buys a pretty nice gasoline engine, and you only need to get about 23-25 mpg (16 mpg while towing) to equal the fuel costs of your 4BT. Hell, it would probably be a ridiculous amount of work, but installing a 2 liter, turbocharged Honda Accord engine would give you 273 lb-ft @ 1500 rpm and 120 more hp, while probably managing 20 mpg while towing. Obviously the 4BT wins for practicality there, but modern gasoline engines are just better.
The 4BT is too small for basically any vehicle
ford ranger? dodge dakota?
The 4BT is such a terrible engine for these conversions. Anybody that suggests the 4BT for a conversion doesn’t know shit about these things.
It’s not the 6BT.
The 4BT rattles, shakes and vibrates like nothing you’ve ever experienced. They shake themselves apart. The newer common rail models vibrate so hard the wire harnesses fall apart.
There are plenty of other, far better candidates for engine swaps.
Driven 4BT forklifts for the better part of the last 20 years and yet to have one shake it's self apart. Guess weak gas chassis would find any weakness though.
I have a p pumped 4b in one of my excavators and it is smooth as silk, but I will say it has a pretty high idle. I am sure that helps. Its around 875 or so. Seen a few in marine apps too with good results. These are a great fuel miser swap if you don't need a ton of hp. Everybody was after the Frito Lays chip trucks for this engine.
If your 4BT is vibrating that badly, you've got one or more serious issues unrelated to the design of the engine. Tune the engine to spec; if the vibration doesn't go away, you may need to tear it down and check for shoddy assembly. Make sure when you go back together with it, that everything is properly balanced and in-time; if your idle is a bit too low, there can be a noticeable shake, but as soon as you're on the throttle, it'll smooth-out and purr like a kitten!