CJ2A repower? - Pirate4x4.Com : 4x4 and Off-Road Forum

Scot · 05-30-2006, 08:47 AM

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.

GoldToyBox · 05-30-2006, 11:30 AM

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

Mattsyj7 · 05-30-2006, 04:54 PM

Im in the middle of building a CJ-2A. I used the 4 banger,trans, and t-case out of a 2000 TJ.

Scot · 05-30-2006, 06:08 PM

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.

Rat_ranger · 05-30-2006, 06:39 PM

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.

MDDimmick · 05-30-2006, 07:00 PM

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.

Rat_ranger · 05-30-2006, 07:10 PM

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.

guidolyons · 05-30-2006, 07:53 PM

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.

05-30-2006, 08:47 AM	#1 (permalink)
Scot Registered User Join Date: Jan 2003 Member # 16408 Location: about 15 miles west of Venus TX Posts: 70	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. __________________ '78 Ford F250 4x4 SC D70/60, 6bta Cummins (not quite stock!), Southbend CON-O, BHAF, NV4500, NP205. Force to fit. File to hide. Paint to cover.

05-30-2006, 04:54 PM	#3 (permalink)
Mattsyj7 Registered User Join Date: Dec 2002 Member # 15499 Location: South St.Paul, MN Posts: 200	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.

05-30-2006, 06:08 PM	#4 (permalink)
Scot Registered User Join Date: Jan 2003 Member # 16408 Location: about 15 miles west of Venus TX Posts: 70	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. __________________ '78 Ford F250 4x4 SC D70/60, 6bta Cummins (not quite stock!), Southbend CON-O, BHAF, NV4500, NP205. Force to fit. File to hide. Paint to cover.

05-30-2006, 07:00 PM	#6 (permalink)
MDDimmick Registered User Join Date: Jan 2004 Member # 26465 Location: Bay Area Posts: 206	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. __________________ 46 CJ2A, 5.0, C4, D300

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05-30-2006, 11:30 AM	#2 (permalink)
GoldToyBox Registered User Join Date: Jun 2004 Member # 32187 Location: Selma, in the middle of the vineyards, Central California Posts: 314	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

05-30-2006, 06:39 PM	#5 (permalink)
Rat_ranger Registered User Join Date: Jan 2006 Member # 64893 Location: oklahoma Posts: 131	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.

05-30-2006, 07:10 PM	#7 (permalink)
Rat_ranger Registered User Join Date: Jan 2006 Member # 64893 Location: oklahoma Posts: 131	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.