Upgrade diesel CJ7 - JeepForum.com

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post #1 of 17 Old 01-31-2011, 02:45 PM Thread Starter
calvykins
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Upgrade diesel CJ7

Hi Everyone
I live in France and I own a CJ7 with a Renault diesel engine. It is particularly gutless.
Is there a more powerful diesel engine which would fit the CJ7? A Renault 2.4TD for example

Were the Renault engines on the CJ7 turbocharged?

Thanks

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post #2 of 17 Old 01-31-2011, 06:07 PM
papa355
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http://www.4btswaps.com/forum/showth...mmins-6BT-Swap

5.9 cummins, that's the way I'd go , brother. " have torch and welder...anything will fit"
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post #3 of 17 Old 01-31-2011, 07:52 PM
Pathkiller
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Forget the Cummins suggestion. If you could even find one in France it would be expensive and hard to find spare parts for, not to mention being way too heavy to be a practical Jeep engine. The 5.9L Cummins engine literally weighs as much as a bare Jeep frame and body, which would be an incredibly dumb swap.

Is your Renault the 2.1L? It was also used in Jeep XJ Cherokees between 1984-86 in the US and was turbocharged, but only rated at 85hp. The VM Motori diesel used in later export Cherokees was a 2.5L turbodiesel and had almost twice the HP and torque of the little Renault.

I don't know what Renault engine would swap for your existing engine, but I would assume the Renaults would have the same bellhousing pattern and bolt to the existing transmission.
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post #4 of 17 Old 01-31-2011, 07:54 PM
benullman
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Quote:
Originally Posted by Pathkiller View Post
Forget the Cummins suggestion. If you could even find one in France it would be expensive and hard to find spare parts for, not to mention being way too heavy to be a practical Jeep engine. The 5.9L Cummins engine literally weighs as much as a bare Jeep frame and body, which would be an incredibly dumb swap.

Is your Renault the 2.1L? It was also used in Jeep XJ Cherokees between 1984-86 in the US and was turbocharged, but only rated at 85hp. The VM Motori diesel used in later export Cherokees was a 2.5L turbodiesel and had almost twice the HP and torque of the little Renault.

I don't know what Renault engine would swap for your existing engine, but I would assume the Renaults would have the same bellhousing pattern and bolt to the existing transmission.

Wouldnt it be possible just to rebuild the diesel with a little more power? It seems like the power could be there if you gave it a little more top end power.

Ben

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Great minds think alike, but so do serial killers......Thanks.
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post #5 of 17 Old 01-31-2011, 07:59 PM
jpywell52
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isuzu made a lot of small displacement diesels as well. Common in troopers.
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post #6 of 17 Old 02-01-2011, 06:51 AM
BioTex
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SD-33T They were used in the CJ10-A tugs, so should bolt right in nicely.

Not a whole lot more power, but some.

'85 CJ7, BDS 4" lift, 1" Body lift, 33x12.5, Shrockworks Sliders, 304 V8 with RV cam., T-176, D300, Dana 30, AMC 20.
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post #7 of 17 Old 02-01-2011, 01:55 PM
Pathkiller
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Quote:
Originally Posted by BioTex View Post
SD-33T They were used in the CJ10-A tugs, so should bolt right in nicely.

Not a whole lot more power, but some.
And how many of them are in France? I suspect very few, if any.
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post #8 of 17 Old 02-01-2011, 03:42 PM
h2ojeep
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Quote:
Originally Posted by Pathkiller View Post
And how many of them are in France? I suspect very few, if any.
Nissan sd33 was also used in (Nissan) forklifts, so there be more in France than one would think .

What about some of the Mercedes-Benz diesels. Someone chime in that knows something about them. Would there be a lot in Europe? Would there be some that would have a good power curve?
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post #9 of 17 Old 02-01-2011, 04:12 PM
Pathkiller
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Yes, but the point is that Renault is French. So there are no doubt a lot more of Renault than any other brand. He already has a Renault diesel, so the simplest and easiest swap would be to another, more powerful, Renault.
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post #10 of 17 Old 02-02-2011, 02:54 AM Thread Starter
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Is it difficult to retrofit a turbocharger to a non turbo diesel engine?
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post #11 of 17 Old 02-02-2011, 03:27 AM
stgil
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Quote:
Originally Posted by calvykins View Post
Were the Renault engines on the CJ7 turbocharged?
Hello!

From factory ...the answer is NO...

but... lot of French's people swap the regular J8S Renault 2.1L (60HP) to a turbo charged J8S Renault 2.1L (~90HP with the right setup )

But be careful:

1- There is only some turbo charged J8S which fit with the clutch (bellhousing)...
2- French's law forbid engine swapping ... in fact you can but... it's very risky:
you need to qualifiate again the car : crashtest and so on... !! (you need to build 2 cars)

There is a very little amount of CJ7 diesel turbo charged (with engine swapping) authorized by the French's administration (DRIRE) but now it is impossible...

You don't know how lucky you are American people...

Here some vintage pics of the administration granted turbo charged 2.1L Diesel J8S Renault:









To the question :

Quote:
Originally Posted by calvykins View Post
Is it difficult to retrofit a turbocharger to a non turbo diesel engine?
The answer is NO: or you must change the pistons, the injectors, oil pump and so on... It's easier to change the whole engine...



Regards

FULL DANA 30 REBUILD->http://www.jeepforum.com/forum/f8/cj7-dana-30-full-rebuilt-setup-part-i-1121189
'82 CJ7 LAREDO REBUILD->http://www.jeepforum.com/forum/f8/82-cj7-laredo-diesel-restoration-1179198/

Last edited by stgil; 02-03-2011 at 03:16 AM.
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post #12 of 17 Old 02-19-2011, 10:27 AM
papa355
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Quote:
Originally Posted by Pathkiller View Post
Forget the Cummins suggestion. If you could even find one in France it would be expensive and hard to find spare parts for, not to mention being way too heavy to be a practical Jeep engine. The 5.9L Cummins engine literally weighs as much as a bare Jeep frame and body, which would be an incredibly dumb swap.

Is your Renault the 2.1L? It was also used in Jeep XJ Cherokees between 1984-86 in the US and was turbocharged, but only rated at 85hp. The VM Motori diesel used in later export Cherokees was a 2.5L turbodiesel and had almost twice the HP and torque of the little Renault.

I don't know what Renault engine would swap for your existing engine, but I would assume the Renaults would have the same bellhousing pattern and bolt to the existing transmission.


5.9 cummins will fit in anything you make it fit into. A jeep is just a square box sittings top of 4 tires. It's not a dumb swap, just may not be for him.

http://www.dieselpowermag.com/featur..._jk/index.html

The 4bt is a good jeep swap.

http://www.jeepforum.com/forum/f37/c...-diesel-52794/


duramax

http://www.jeepforum.com/forum/f8/duramax-swap-61446/

http://www.jk-forum.com/showthread.p...diesel-in-a-JK

http://www.4btswaps.com/forum/showth...-8-duramax-6.6

my point is, you can do anything you want to, whether you have the cash or not???? ( that may be an issue......) NO swap is a dumb swap, it's all about being creative. Doing something somebody told you was dumb or couldn't be done.......greatest feeling ever.

Last edited by papa355; 02-19-2011 at 11:04 AM.
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post #13 of 17 Old 03-11-2011, 06:49 PM
6.0cj7
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Go find a nice powerstroke they fit good in the engine bay.
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post #14 of 17 Old 03-11-2011, 07:19 PM
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Well, from stgil's post, it sounds like any Cummins, P/stroke, or Duramax swap is impossible, especially if you are not even allowed to put in an upgraded version of the same engine!

Wow, I guess those in Kalifornia shouldn't complain so much anymore...

Rick

1978 CJ5 5.0HO/T177/D300, '86 D30/D44 WT axles, 'glass body, 31x10.5 BFG A/T, TDK galv'd frame - DD and weekend toy

http://www.jeepforum.com/forum/f8/ri...8-cj5-1223197/
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post #15 of 17 Old 03-02-2012, 06:40 AM
Dipstick
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https://www.youtube.com/watch?v=Avtg...e_gdata_player I have an 80 cj7 with the peugoet diesel in it from the factory. It's only around 60 hp. It's a lot of fun but I wish it was a turbo.

Last edited by Dipstick; 03-02-2012 at 07:16 AM. Reason: wrong year
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