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Jeep Wrangler YJ
YJ General Discussion
What do I need for a 4-cylinder to 6-cylinder engine swap?
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<blockquote data-quote="machoheadgames" data-source="post: 428489" data-attributes="member: 18789"><p>You can pretty much convert to either but you will need a lot of parts to do it. The 4.2 would probably be a mess due to the old emissions parts and lack of them. And you may not need the emissions compliance, probably don't, but it may be difficult to figure out a hodge podge of parts for the 4.2 that work.</p><p></p><p>I believe most of the tub holes and such are the same on early and late YJs. I believe they built the harnesses to still use the same holes even on early models and later fuel injected models. so I think if you buy basically everything (all wiring, etc) you can probably make a 4.0 swap work relatively plug and play. </p><p></p><p>You will absolutely need a new transmission, AX15 would be my choice if I were in your shoes.</p></blockquote><p></p>
[QUOTE="machoheadgames, post: 428489, member: 18789"] You can pretty much convert to either but you will need a lot of parts to do it. The 4.2 would probably be a mess due to the old emissions parts and lack of them. And you may not need the emissions compliance, probably don't, but it may be difficult to figure out a hodge podge of parts for the 4.2 that work. I believe most of the tub holes and such are the same on early and late YJs. I believe they built the harnesses to still use the same holes even on early models and later fuel injected models. so I think if you buy basically everything (all wiring, etc) you can probably make a 4.0 swap work relatively plug and play. You will absolutely need a new transmission, AX15 would be my choice if I were in your shoes. [/QUOTE]
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Jeep Wrangler YJ
YJ General Discussion
What do I need for a 4-cylinder to 6-cylinder engine swap?
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