i am rebuilding my 3800 motor in my camaro that has 120k miles, should i replace the crank shaft? I didn't spin a bearing or anything and the crank isn't damaged.
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Re: rebiuld questions
Originally posted by Camaroman1221 View Posti am rebuilding my 3800 motor in my camaro that has 120k miles, should i replace the crank shaft? I didn't spin a bearing or anything and the crank isn't damaged.
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Re: rebiuld questions
I had mine rebuilt at 122,000 miles and the mechanic checked out everything and then used clev.77 bearings all around and it has been running great ever since with 168,000 miles on it and 7 years later.08' L76 6.0L 4X4 Chevy EXT.Cab LTZ Vortec MAX with Snug top cover, Dynomax exhaust,Hptuners& K&N intake
96' Camaro M5 to A4 conversion, alot of mods . GT35R Turbo full suspension. Built engine
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Re: rebiuld questions
Originally posted by Camaroman1221 View Postoh great, ok i am gonna have to look at the cap and see what i did to it cause i only think there is a nic on the top part of it from me wiggling it, the part were the cap touches the black and were the bearing sits are untouched
If the cap doesn't fit against the block tight the clearence will be off on the bearing to crank. If you burred it, you may be able to just remove the burr.sigpic
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Re: rebiuld questions
Originally posted by Camaroman1221 View Postok thats good to know because the parts that is messed up alil bit is not the sides or bottom where it contacts the block, is the part on that top so i should be ok
As long as it is not bad enough to effect the strength of the cap it should be fine.sigpic
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Re: rebiuld questions
Originally posted by Camaroman1221 View Postok thats good to know because the parts that is messed up alil bit is not the sides or bottom where it contacts the block, is the part on that top so i should be ok
im betting that it is fine and you can re-use it
a nick on the top of the main cap doesnt seem like a threatening problem on a 200hp engine
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Re: rebiuld questions
Originally posted by Camaroman1221 View Posti am rebuilding my 3800 motor in my camaro that has 120k miles, should i replace the crank shaft? I didn't spin a bearing or anything and the crank isn't damaged.
First thing to do with the crank is have it magnafluxed and checked for straightness. If it passes those two tests, then it's journals need to be inspected for wear and machined undersize if necessary. If there is no significant wear, simply have the journals micropolished.
As for bearings, I think that, right now, the best stuff comes from Mahle Clevite. If the crank didn't need undersizing, use either standard or -.001 bearings to get the desired main bearing clearance.
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