Diesel Engine Swap - Page 2 - JeepForum.com
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post #16 of 20 Old 09-21-2010, 11:20 AM
devildog6133
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so phil, whould you think a 4bt cummins would be too heavy? i have a 6.5 in skyjacker suspension lift on my wj with 35 bfg's how easy is it to tune them and can i take my hyper tech chip out of my 4.0 and put it in the 4bt?

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post #17 of 20 Old 09-21-2010, 11:32 AM
Fooly
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Quote:
Originally Posted by devildog6133 View Post
so phil, whould you think a 4bt cummins would be too heavy? i have a 6.5 in skyjacker suspension lift on my wj with 35 bfg's how easy is it to tune them and can i take my hyper tech chip out of my 4.0 and put it in the 4bt?

Yes, more information on the 4bt swap please.

EDIT: Actually, after some searching, I'm not sure I would put something that heavy into a unibody, and you would have to fabricate a lot to fit in the NV4500, maybe a lighter turbo-diesel though?

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post #18 of 20 Old 09-21-2010, 11:59 AM
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Thats why I said a 6.5 its not as tunable but still would give you good power to weight and its lighter.

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post #19 of 20 Old 09-21-2010, 01:16 PM
Timo_90xj
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Naaahh, skip the heavy pigs like V8 GM diesels or Cummins 4bt, and put in an old Merc diesel (OM603/606, or even a 617). XJ is light vehicle, so you can easily use passenger car engines. The old merc diesels are all pretty durable and tunable engines. Stock turbo internals of a 603 or 606 should handle up to about 300hp. Stock engines aren't that powerful, but rather spectacular when built right

Don't know about their street-legality in the USA though.


YouTube - world's fastest diesel mercedes w123 300d


This one is with a slightly newer merc diesel IIRC:

YouTube - Mercedes W124 300TD Diesel 500+HP

YouTube - MB 300 turbodiesel

1998 Grand Cherokee 5.9 LX daily driver, 1.75" BB, 32" KM2s, HPD30 Eaton e-locker/D44a stock LSD, 4.56 gears, custom- fabbed tube bumpers and tube fenders,...

http://www.jeepforum.com/forum/f13/d...s-etc-1222317/


1990 XJ Limited (4-door), 4.0 I6, AW4, NP242, ***rolled and totalled @ 165k miles***

***Under construction***
1990 XJ (4-door), 4.0 I6, AW4, NP242, PBR 42" tires, Unimog 404 portal axles, 110" WB, full cage + uniframe completely rebuilt, front 3-link + panhard / double triangulated 4-link rear,... ***SOLD***
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post #20 of 20 Old 09-21-2010, 02:07 PM
Phil12
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[QUOTE=Timo_90xj;10161573]Naaahh, skip the heavy pigs like V8 GM diesels or Cummins 4bt, and put in an old Merc diesel (OM603/606, or even a 617). XJ is light vehicle, so you can easily use passenger car engines. The old merc diesels are all pretty durable and tunable engines. Stock turbo internals of a 603 or 606 should handle up to about 300hp. Stock engines aren't that powerful, but rather spectacular when built right

Don't know about their street-legality in the USA though.
As I said in my previous comment, my other car is an 83 Mercedes with the 5 cylinder turbo diesel. It's not a light engine but I don't know how close it is to the Jeep engine in weight. If you want to look into tuning one check on PeachParts - Mercedes Parts & Tech Info
The first car in your videos has an amazing engine in it. I will look around, I have seen pic. of the engine and the build up of the car.
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