Swapping a 258 for a 91 4 cyl. - JeepForum.com
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Unread 05-11-2002, 06:37 PM   #1
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Join Date: May 2002
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Swapping a 258 for a 91 4 cyl.

I have a 258 out of a 78 CJ5 with only 84K on it. I looking to buy a 91, 4cyl. with 199K. Can I put the 258 in without major reconstruction?

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Unread 05-12-2002, 10:40 AM   #2
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My advise, take it as you see it, is to keep the injected 4 cyl. My experience has been that they run just as well if not better than a carbed 4.2. They are geared for the motor so power is not a big issue. Another thing to consider is emission laws. The big thing about swaps is to go newer, not older. Just my 2 cents, Hamy.
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Unread 05-13-2002, 12:45 PM   #3
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However, if you live in a state like mine, where anything 25 years and older is emission-exempt, go older and simpler with your swap, as long as your vehicle is 25 or more (see my '77 CJ-7, 25 years old this year, with the '72 360 in it, no emissions <img border="0" title="" alt="[Wink]" src="wink.gif" /> ).
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