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 Re: Engine swap question.
[Re: gem_miner25]
#804393
04/20/07 02:56 PM
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Joined: Oct 2003
Posts: 7,768
Web Wheeler
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Yep! Everything is different. The 91 is a fuelie and the 90 is carbed. There IS a way to install the short bolck from the 90 into the 91 and use everything else from the 91.. But it is rather involved.. If all you need is an engine you will need a 91 up to directly swap. Big JIm <img src="/forums/images/graemlins/pfft.gif" alt="" />
professional bovine relocation specialist
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 Re: Engine swap question.
[Re: BigJim]
#804394
04/20/07 10:42 PM
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Joined: Jun 2004
Posts: 1,063
Body Damage is Cool
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no bj the 90 is a fuelie( if an xj) i have a 89 and it is fuel injected. but he is right in 91 they did change alot. from the brake rotors to head design and so on.
out of all the jeeps in this town the d**n gremlin had to invade mine
I've done so much,with so little for so long i can practicly do anything with nothing
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Re: Engine swap question.
[Re: cuervo25]
#804395
04/21/07 05:24 AM
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Joined: Apr 2007
Posts: 2
Need a Spot
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I am trying to go from the '91 to the '90. I was thinking about using just the block and head from the '91 and leaving the intake from the '90 there. Will this pose a problem? What exactly, besides the computer, makes the high output different from the regular 4.0 ?
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