This should make for some discussion...
10-26-2006, 02:32 PM
#1
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This should make for some discussion... This is a picture of a 100% stock 2006 Corvette LS2. The front cam bearing is showing a lot of copper and the second one back is far worse...
Car has 3400 miles, nothing at all done to it. Not even an air filter.
http://i10.photobucket.com/albums/a1...8/DSCF0406.jpg
Car has 3400 miles, nothing at all done to it. Not even an air filter.
http://i10.photobucket.com/albums/a1...8/DSCF0406.jpg
10-26-2006, 04:04 PM
#4
I thought all LSx based motors were like this? I have done 3 different cam swaps (into LS1 cars) and all of them showed what looked just like that. My 2002 Z28 looked like that at ~1000 miles, another car had 19k on it and the bearings showed more copper than that (still felt smooth, no grooves just discoloration). It was put back together like that and is still running ~2 years and god knows how many miles later (car has since been sold twice).
Shawn
Shawn
10-26-2006, 05:42 PM
#6
Originally Posted by SPANKY LS1
I thought all LSx based motors were like this? I have done 3 different cam swaps (into LS1 cars) and all of them showed what looked just like that. My 2002 Z28 looked like that at ~1000 miles, another car had 19k on it and the bearings showed more copper than that (still felt smooth, no grooves just discoloration). It was put back together like that and is still running ~2 years and god knows how many miles later (car has since been sold twice).
Shawn
Shawn
10-26-2006, 05:53 PM
#7
Originally Posted by SPANKY LS1
I thought all LSx based motors were like this? I have done 3 different cam swaps (into LS1 cars) and all of them showed what looked just like that. My 2002 Z28 looked like that at ~1000 miles, another car had 19k on it and the bearings showed more copper than that (still felt smooth, no grooves just discoloration). It was put back together like that and is still running ~2 years and god knows how many miles later (car has since been sold twice).
Shawn
Shawn
Bill
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10-26-2006, 06:29 PM
#8
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I think a remember some discussions on newish cars having discolored cam bearings.
I have almost 120K miles on my motor and I don't even want to know what my cam bearings look like
I have almost 120K miles on my motor and I don't even want to know what my cam bearings look like
10-26-2006, 10:06 PM
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While its hard to really see in the pic, it is standard GM procedure to actually Aline hone the cam bearings after they are installed. This is why they look the way they do, some worse than others based on true position and ID of bearing.
Dave
Dave
10-27-2006, 11:23 AM
#10
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Originally Posted by 99Fbody99
While its hard to really see in the pic, it is standard GM procedure to actually Aline hone the cam bearings after they are installed. This is why they look the way they do, some worse than others based on true position and ID of bearing.
Dave
Dave
My machine shop thought that was "Not True" so they went ahead and installed a new bearing. In less than 500 miles I spun the #3 bearing.
Dont fluck with it.Its PERFECTLY fine.
