knock and scrape
Thread Starter
Teching In
Joined: Oct 2007
Posts: 23
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From: NWI
knock and scrape Hello all. Longtime gen 1 guy here, years on IrocZone and TGO, first time dealing with an LSx...
Anyway, my buddy picked up a 1998 T/A awhile back and we've been toying with it for some time now. Recently it just got really really cold out. Last night we were cruising as usual, everythings fine. I guess this morning on his way to school, he starts to hear a knock and scrape. He called and I thought it would just be the typical LS1 piston slap since it is cold out, but he said the engine was fully warmed.
He says it doesnt happen all the time though and it does kind of drop oil pressure and vary in RPM's. The engine does has about 112k on it, we ofcourse dont want to think about rod knock or oil pump failure, but what do you guys suggest?
Anyway, my buddy picked up a 1998 T/A awhile back and we've been toying with it for some time now. Recently it just got really really cold out. Last night we were cruising as usual, everythings fine. I guess this morning on his way to school, he starts to hear a knock and scrape. He called and I thought it would just be the typical LS1 piston slap since it is cold out, but he said the engine was fully warmed.
He says it doesnt happen all the time though and it does kind of drop oil pressure and vary in RPM's. The engine does has about 112k on it, we ofcourse dont want to think about rod knock or oil pump failure, but what do you guys suggest?
Thread Starter
Teching In
Joined: Oct 2007
Posts: 23
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From: NWI
So, if it hasnt chwed up the crank and such already, it is possible to just replace the bearings and have no machine work done? or is it a must to also have the crank turned down and oversized bearings put in place? For the rod bolts, those will need to be pressed in/out correct?
thanks for the quick replies guys
thanks for the quick replies guys
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TECH Regular
Joined: Sep 2007
Posts: 443
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From: Kansas City, MO
Typically a valvetrain noise is at half the speed of the engine and a piston/rod problem is 2x faster than a valvetrain noise. If it's a slow tick it's valvetrain. If it's fast, bottom end.
Thread Starter
Teching In
Joined: Oct 2007
Posts: 23
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From: NWI
Anybody have a complete bottom end rebuild list?
better yet, any of the sponsers sell shortblocks? Links?
looks like this is golden.. ..
http://www.sdparts.com/product/SDLS6...kAssembly.aspx
Now, anybody sell a complete gasket kit?
better yet, any of the sponsers sell shortblocks? Links?
looks like this is golden.. ..
http://www.sdparts.com/product/SDLS6...kAssembly.aspx
Now, anybody sell a complete gasket kit?
Last edited by CTC B4Z; Oct 11, 2007 at 10:40 AM.