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Jeep Wrangler YJ
YJ General Discussion
Crankshaft end play
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<blockquote data-quote="matthewcamp1978" data-source="post: 437324" data-attributes="member: 20814"><p>Ok, here is the question.. replace the crank only with bearing and thrust washer, rebuild the whole thing or Ls swap.. here is the problem. Few months ago my yj with blue print and balanced motor with a mild hot cam with the three speed automatic transmission. The transmission burned up on me. So a bought a AX15 and decided to swap to a manual. Told it was a working transmission, but after installing I found it had no reverse and hard going into 5th. So I rebuilt it. Went to install it and while mating it to the motor. I noticed the flywheel moved and I mean a lot. Put my dial indicator on it and I had almost 3/8 of an inch…. Ouch. So I dropped the pan and pulled the number 3 bearing cap to check the thrust bearing. Of courses it’s shot, but not as bad as the crank. The crank is worn bad enough to not be repaired. So… everything else seems ok, but the timing chain. It has ton of slack in it. Engine was running fine, but this isn’t good. So what would you jeepers do? Crank was only worn on one side, looks to me that it was being pushed against. Any ideas what caused it also. I got about 23k in this set up. Thanks everyone, Matt</p></blockquote><p></p>
[QUOTE="matthewcamp1978, post: 437324, member: 20814"] Ok, here is the question.. replace the crank only with bearing and thrust washer, rebuild the whole thing or Ls swap.. here is the problem. Few months ago my yj with blue print and balanced motor with a mild hot cam with the three speed automatic transmission. The transmission burned up on me. So a bought a AX15 and decided to swap to a manual. Told it was a working transmission, but after installing I found it had no reverse and hard going into 5th. So I rebuilt it. Went to install it and while mating it to the motor. I noticed the flywheel moved and I mean a lot. Put my dial indicator on it and I had almost 3/8 of an inch…. Ouch. So I dropped the pan and pulled the number 3 bearing cap to check the thrust bearing. Of courses it’s shot, but not as bad as the crank. The crank is worn bad enough to not be repaired. So… everything else seems ok, but the timing chain. It has ton of slack in it. Engine was running fine, but this isn’t good. So what would you jeepers do? Crank was only worn on one side, looks to me that it was being pushed against. Any ideas what caused it also. I got about 23k in this set up. Thanks everyone, Matt [/QUOTE]
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Jeep Wrangler YJ
YJ General Discussion
Crankshaft end play
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