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post #1 of (permalink) Old 05-18-2001, 09:42 PM
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Need help with engine ? Fast please!.

I am wondering if a 93 2.5L will swap right into a 90 that also had a 2.5L. My 90 has TBI and I do not know what fuel delivery the 93 has. One of my concerns is that the internals might be slightly different (piston height,chamber size, shape & vol) and the 93 might not be as efficient as it could be with the TBI. I know that the 89 and 90 engines are the same but do not know about the 91 and up.

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post #2 of (permalink) Old 05-18-2001, 10:22 PM
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Re: Need help with engine ? Fast please!.

the 93 will be multi port injection. as far as i know the engines internals are identical. if you are planning on swapping in the mutiport, complete, you'll have to change fuel pumps and lines, computer, and some wiring stuff, at least. if you're happy with the TBI, you could use the 93 engine, with your intake and throttle body.that would be easiest, quickest, and least expensive.

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post #3 of (permalink) Old 05-19-2001, 03:32 AM
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Re: Need help with engine ? Fast please!.

yeap they are exactly the same thing, i've just swaped over the head from a 92 to a 89 wrangler and even the valve cover from the 92 to the 89 and it worked out great , same exact stuff but if your gonna swap over to the MPI your gonna need the computer don't forget.. since your using 4 injectors instead of just 1 have a good one

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1995 Wrangler 2.5L w/ 5spd / 31"BFG AT's
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