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Jeep Wrangler YJ
YJ General Discussion
Advice on Compression Test Results
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<blockquote data-quote="Gilaguy23" data-source="post: 429935" data-attributes="member: 19498"><p>Dont let anybody convince you a "in frame" rebuild will be worth while. This leaves the block and crank in the frame. No bore job, no new crank/cam bearings Its a half A'ed way to do a half A'ed rebuild. If they pull the head and drop the pan and determine cylinders are scored, a ring(s) or piston skirt is broke, the only way to do it correctly is to remove the engine and do a full rebuild or install a long block or low mileage used. Not sure about dropping in a later 4.0, as in 99+. If so be aware of the 0331 head castings.</p></blockquote><p></p>
[QUOTE="Gilaguy23, post: 429935, member: 19498"] Dont let anybody convince you a "in frame" rebuild will be worth while. This leaves the block and crank in the frame. No bore job, no new crank/cam bearings Its a half A'ed way to do a half A'ed rebuild. If they pull the head and drop the pan and determine cylinders are scored, a ring(s) or piston skirt is broke, the only way to do it correctly is to remove the engine and do a full rebuild or install a long block or low mileage used. Not sure about dropping in a later 4.0, as in 99+. If so be aware of the 0331 head castings. [/QUOTE]
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Jeep Wrangler YJ
YJ General Discussion
Advice on Compression Test Results
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