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Jeep Wrangler YJ
YJ General Discussion
Engine Identification
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<blockquote data-quote="machoheadgames" data-source="post: 432602" data-attributes="member: 18789"><p>What are you needing to determine? you have the 4.0 straight 6, there is only one version of that engine. Buy parts based on year and you'll be fine. </p><p></p><p>All 4.0's from 91-95 are the same except for the 91 manual trans used a crankshaft that needs a smaller pilot bearing, and some of the late 95s used the newly refined TJ engine which was mostly the same except for some tuning differences, a newer style valve cover and gasket, and a different belt and accessory layout.</p><p></p><p>What parts are you trying to buy?</p></blockquote><p></p>
[QUOTE="machoheadgames, post: 432602, member: 18789"] What are you needing to determine? you have the 4.0 straight 6, there is only one version of that engine. Buy parts based on year and you'll be fine. All 4.0's from 91-95 are the same except for the 91 manual trans used a crankshaft that needs a smaller pilot bearing, and some of the late 95s used the newly refined TJ engine which was mostly the same except for some tuning differences, a newer style valve cover and gasket, and a different belt and accessory layout. What parts are you trying to buy? [/QUOTE]
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Jeep Wrangler YJ
YJ General Discussion
Engine Identification
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