Good match for powerband on a 4BT?
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Maybe for the powerband, but not for the torque.
~John
The Toyota V8 diesel puts out more torque(317ft/pounds) than a stock 4BT(265ft/pounds)and its using the H151
The H151 has also seen service behind the 1HD FTE and its predecessors and seems to be holding up quite well.
I dont think I am going to tune the 4BT up much past factory specs.... going for fuel economy over getting to the next stop light before the guy next to me.
If you're driving conservatively you'll be fine, but once you play with that pump, you'll have a hard time stopping. It'll put a smile on your face!!! And like "Radd" said, i doubt it'll hold up.
The best thing i did to my '97 6BT was a fuel plate and made it a whole new truck, gov.spring, starwheel etc... They're amazing engines!!!
I have a 4BTA awaiting a solid 80 series transplant, post pics of your buildup, would love to see it.
Have fun!
Cheers!
So I am thinking of the 4BT with the H151 and its tcase in my 1994 FZJ80.
Seriously!?... Most 4BT's making their way to the public are 15+years old and closer to 290lb-ft. stock. With a fuel screw or plate pending on the type of pump you've got can get you an easy 500+lb-ft. of torque.--that's with 4 not 8cylinders like you mention at 317lb-ft.! Compare your new 8 cylinder to the new ISX-common rail(again still 4 cylinders!) you've got 160HP @ 460lb-ft. unmolested. No comparison!!!
But you are right, Toyota's engine certainly is smoother and more quiet!!! The ISX's are about half as loud as the old BT's and still loud!No one mentioned turnng up fuel screws in the original post nor did they mention which Cummins from which year.
I got the torque info from Proffits
Cummins Diesel Conversions
The 290lbs/ft is still less than the 317lbs/ft the V8 puts out.
LOL... don't get me wrong i love my diesel cruisers as much as most anyone on this site! There's a good selection of hp/tq. values for the 4bt and most get turned up pending on their application and use. Being on the mild end of values at 290, its not far away from 317... again, mild range.
Seeing as though you want to turn this into a Toyota vs cummins engine debate,the torque figures I mentioned are for the aussie spec V8 which are lower than the European and the ME version and they are also for the single turbo version.
The twin turbo aussie version has 480lbs/ft and is probably a much nicer drive than a potato crisp truck engine.
The Middle Eastern version of the engine has even more power and they can be rechipped and have the fuel turned up
Nah... i wouldn't even go there with the common rails, let alone mechanical 6BT's!!!
I dont know why the number of cylinders makes a difference. Torque is torque.
I say put the 4500 behind the 4BT, same bellhousing, lighter...Well today I found a guy that has a 6BT Cummins engine and a damaged NV4500 that goes with the engine. I hope to buy these as soon as I secure a deal with the guy. I wanted to stay with a 4BT to save on weight. From what I read at Cummins the 4BT dry was 950lbs and the 6BT dry was around 1150lbs. Only about 200 lb difference. Also I thought the 4 cylinder might gave me better fuel economy and would have more then enough power for what I need.
What do you guys think so far?
I dont know why the number of cylinders makes a difference. Torque is torque.
Is the 4BT 750lbs or 950lbs? net weight?
But you are right, Toyota's engine certainly is smoother and more quiet!!! The ISX's are about half as loud as the old BT's and still loud!
Is the 4BT 750lbs or 950lbs? net weight?