My Jeep ate its engine ! - need advice on engine swap... -
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Unread 04-28-2009, 06:39 PM   #1
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1994 YJ Wrangler 
Join Date: Apr 2009
Location: marlton, NJ
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My Jeep ate its engine ! - need advice on engine swap...

I got my 1994 YJ about a month ago knowing that it had a slight engine knock but the price was right. Well last night while pulling itself out of a mud hole it decided that it was time for a new engine and thru the rod out the side of the engine block. Jeep people are great though... another Jeep saw it happen, laughed his *** off, then pulled me out . I need advice on how to go about upgrading the drivetrain enough to have some weekend fun without sinking a ton of money into it. Right now it is a stock 4 cylinder with auto trans and 231 transfer case. I was told that changing it out with a Jeep 6 is more trouble than it is worth. I was wondering which trans with bolt up to the existing transfer case and if a Chevy V-6 or V-8 is a better overall fit for an everday driver to do a little mudding on the weekends with. Or if it is better in the long run to just buy one already with the mods done...Any help is greatly appreciated... Thanks !!

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Unread 04-28-2009, 07:16 PM   #2
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1995 YJ Wrangler 
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My jeep did the same thing about a month ago. I just put in a new motor from atk. It would be best to just find a solid low miles junkyard 2.5 rather than buying a new one. I spent about a week trying to find all of the little parts that i needed. If you get a junkyard motor it should come with everything.
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Unread 04-28-2009, 07:17 PM   #3
from here it gets rough
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1993 YJ Wrangler 
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Others will be able to advise you on SBC swaps, but it is a big job with many details. Many others find the 4 screaming squirrels to be adequate. Supporting the latter group there are many folks who may have access to a used 4 cyl they took out when they did some type serious upgrade, or they could be available in the junkyards to be rebuilt, put in as-is, or you can source them thru engine rebuilders online.
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Unread 04-28-2009, 08:11 PM   #4
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1991 YJ Wrangler 
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i just threw in another 4cyl i found from a younger YJ, with a TJ trans an t-case

overall cost for everything came to about 500$
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Unread 04-28-2009, 08:24 PM   #5
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1990 YJ Wrangler 
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I have a 4cyl long block you can come pick it up in MD.
'90 YJ Wrangler - 4.3L Chevy
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Unread 05-03-2011, 03:31 PM   #6
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1992 YJ Wrangler 
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seems like an appropriate place for these photos then. This happened on Saturday.

my rig looks like this

it did this:

hole in oil pan

hole in block

broken rod

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