Lucky No. 7!!! (spun bearings)
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Lucky No. 7!!! (spun bearings)
What in the hell is the deal with the #7 Cylinder on these engines?? I had a bad knocking noise that came out of nowhere that was also making a loud "metal on metal" screeching sound that I had never heard anything like it before. Oil pressure was still 50-60lbs at idle so I wasn't sure that it was a bad bearing. I cut the oil filter in half for a look and found a good bit of metal in it so I decided to pull my oil pan tonight and of course found some spun bearings... The bearings had jumped each other and had over lapped one other.. The crank seems to be "ok" and hopefully will be fine with just a good polish. I really don't like the idea of turning a basically brand new $1600 dollar Callies crank.. I think the rod will be ok also or at least I hope so.. Don't really like the idea of having to buy another Lunati Billet rod either.. This motor has about 10-12 passes on it and maybe 50 street miles. Hasn't been turned over 6800rpms yet and has only seen a 100 shot of nitrous. I noticed that there was some fuel in the oil the last time I changed the oil and I'm guessing that the gas could have washed the bearings clean causing the spun bearing. But, who knows.
Anyways, 3-4 months after installing all of this **** I get to pull it out AGAIN and go back through the whole thing once again. Isn't that awesome?????? I guess it could have been alot worse, but damn its disheartening.. Anyone wanna donate some new main & rod bearings?? Clevite preferably?? Just thought I would share the good news an vent a little.. Thanks for reading!
Anyways, 3-4 months after installing all of this **** I get to pull it out AGAIN and go back through the whole thing once again. Isn't that awesome?????? I guess it could have been alot worse, but damn its disheartening.. Anyone wanna donate some new main & rod bearings?? Clevite preferably?? Just thought I would share the good news an vent a little.. Thanks for reading!
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Yeah its just part of it.. Just kinda pisses me off cause I haven't even leaned on it yet. I was one weekend away from getting a solid dyno tune and turning up the heat, but now I'm gonna be kinda gun shy when I get it back going again..
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Originally Posted by 1QuickT-A
Yeah its just part of it.. Just kinda pisses me off cause I haven't even leaned on it yet. I was one weekend away from getting a solid dyno tune and turning up the heat, but now I'm gonna be kinda gun shy when I get it back going again..
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Originally Posted by 1QuickT-A
Yeah its just part of it.. Just kinda pisses me off cause I haven't even leaned on it yet. I was one weekend away from getting a solid dyno tune and turning up the heat, but now I'm gonna be kinda gun shy when I get it back going again..
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that is bad news bro,sorry to hear that.i finally got mine running after setting all of last year with a spun bearing and have a 408 in mine now and i am hoping like hell this one lasts quite awhile.i think i may have starved mine for oil since i was 1 1/2 quarts low but who knows,i only know what the outcome was.
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Mine did that same thing as yours, squeeking sound and had a tick. I tore it down and had a saddled bearing. But my top ring was gaulded to the piston as well from going extremely lean. We think from it going lean got the piston red hot and the heat transfered down the rod to the bearing. It was #7 as well... Mine had 196 miles on it and 3 passes down the track.
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Hey guys, I got a question, I have an 02 SS with I believe an LS-1 in it, I dont know if the guy before me did anything to it, I know nothing about computerized motors, heads look big, and it has a mild Idle to it, ran 11.9 at the track on D.O.T. slicks, question is, what would cause my #7 cylinder to lose compression and if so, is it possible that it isnt the piston rings?
#12
Like those above, you are not alone and many feel your pain. Had a Buddy that did everything right with 383 stroker, forged crank, pistons, etc. Lowered the compression for a turbo. Lots of money invested.... made one trip down the track. Week later spun a bearing driving normal on the street. Hang in there. Hope you have a more understanding wife/girlfriend than he did.
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Originally Posted by 98Camarod
Was the motor broken in or did you take it straight to the track? Its a sad thing to hear...
Btw, I don't think this has anything to do with the normal problems that people are having with the #7 cylinder going lean because I'm not running the stock style intakes. I'm running the GMPP carb style intake so every cylinder should be about the same.