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Jeep Wrangler YJ
YJ General Discussion
Limited parts
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<blockquote data-quote="Flyer58" data-source="post: 429215" data-attributes="member: 18629"><p>How many miles are on your engine? If it's not a worn or spun bearing then it may be piston slap. They both sound the similar and I don't have enough experience to tell the difference. I had a 2000 Chevy with piston slap when the engine was cold and then went away as it warmed up. The dealer said it's ok and I drove it for another 150,000 miles without any trouble. I don't know about the 258 in a YJ. It may need to be rebuilt in either case.</p><p></p><p>The previous owner ran mine out of oil which caused a bearing to spin, the sound started off quiet but got very loud when the oil warmed up which is the opposite from what I had in the Chevy.</p><p></p><p>I had a machine shop redo the head, +.030 in the cylinders, and .010/.010 on the crank journals. All work plus a master rebuild kit for me to reassemble cast $1000 but it was a 2.5L 4cyl.</p></blockquote><p></p>
[QUOTE="Flyer58, post: 429215, member: 18629"] How many miles are on your engine? If it's not a worn or spun bearing then it may be piston slap. They both sound the similar and I don't have enough experience to tell the difference. I had a 2000 Chevy with piston slap when the engine was cold and then went away as it warmed up. The dealer said it's ok and I drove it for another 150,000 miles without any trouble. I don't know about the 258 in a YJ. It may need to be rebuilt in either case. The previous owner ran mine out of oil which caused a bearing to spin, the sound started off quiet but got very loud when the oil warmed up which is the opposite from what I had in the Chevy. I had a machine shop redo the head, +.030 in the cylinders, and .010/.010 on the crank journals. All work plus a master rebuild kit for me to reassemble cast $1000 but it was a 2.5L 4cyl. [/QUOTE]
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Jeep Wrangler YJ
YJ General Discussion
Limited parts
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