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Old 05-30-2006, 08:47 AM   #1 (permalink)
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CJ2A repower?

Got a CJ2A on the deer lease with a blown engine. Parts and machine work is going to run $1400.

So, what is the cheapest and easiest repower? Don't need big power as the rest of the driveline is stock.
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Old 05-30-2006, 11:30 AM   #2 (permalink)
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not really hard core and not really enough info, 4 banger? T-15 ? and T-18 T/C?
You doing the work your self? Blown engine how? blown head gasket? sucked valve? tossed rod? Spun crank?
For $1400 probably find a running rust bucket.
The Buick 231 V-6 from a wreaker is a popular replacement.

Cheapest? Probably find someone up grading to V-6 or V-8 to give you their running engine.
More help try other sites and ask:
/forum/67-jeep-non-hardcore/
http://jeepsunlimited.com/forums/for...?s=&forumid=36
http://bbs.off-road.com/ubbthreads/p...froadjeepshort
http://www.jeepaholics.com/tech/cog/
http://myweb.cableone.net/wdohrn/
http://www.rebuilt-jeep-engines.com/
http://www.earlycj5.com/forums/

Good luck
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Old 05-30-2006, 04:54 PM   #3 (permalink)
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Im in the middle of building a CJ-2A. I used the 4 banger,trans, and t-case out of a 2000 TJ.

Last edited by Mattsyj7; 05-30-2006 at 04:54 PM.
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Old 05-30-2006, 06:08 PM   #4 (permalink)
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When I found about it, it had overheated and had water in the crank case.
They tried to fix it without sucess by doing a headgasket. When I hauled it home, it blew great clouds of blue smoke.

I tore it down, and found it had already been bored 0.030 and the shaft cut 30/30. There was 0.017" gap between the upper ring and groove. (should be ~0.001) There are scratches in the walls you can hang a fingernail on where the rings broke into multiple pieces. You can catch a fingernail on the grooves on the crank from the diluted oil.

I assume the tranny is a T90 BW.

I put a 6bta Cummins in a '78 F250 so I reckon I can do this simple repower.
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Old 05-30-2006, 06:39 PM   #5 (permalink)
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For simple, swap in a carbed 2.3 lima ford engine. they almost bolt right up. stay with the t90 and d18. It would only take minor mods to make a 2.3 ford fit. and its got more power to boot.
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Old 05-30-2006, 07:00 PM   #6 (permalink)
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You've got lot's of options, newer 4 bangers such as the wrangler and ford as mentioned above. For 6's the easiest would be either the buick 231 or a 4.3 chevy. You could probably find a 231 buick with a nice jeep trans for cheap, would likely be my first choice.
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Old 05-30-2006, 07:10 PM   #7 (permalink)
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4.3 to t18 to d20, nice short with decent gearing. lots of choices, just depends on how much wiring you want to do and what all in the fuel system you have to mod. I mentioned the 2.3 cause you can get them carbed, lots of hop up parts, close to fitting, and cheap and easy to find.
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Old 05-30-2006, 07:53 PM   #8 (permalink)
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Same thing happened to my 48 CJ2A...#3 cracked cylinder wall. I ended up selling it rather than fixing it...stupid..stupid...stupid....well, I was only 16 at the time and didn't have the time or $$ to fix it.
X2 on the buick V6 from an early CJ5. The Buick V6 was used for a number of years with the T-90, or the old 151 Iron Duke 4cyl from a CJ.
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