Looking for cam bearing pics....
Thread Starter
10 Second Club
Joined: Aug 2010
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From: Harford Co. Maryland
Looking for cam bearing pics.... Looking for cam bearing pics of the outer shell.... I have a motor that lost oil pressure and found it to be a spun cam bearing...After looking a little closer, it looks like it might be just a wiped bearing and didn't spin.
I will still have a shop mic it to be sure.
Just wanted to compare before I lug this chunk of steel back and forth
I will still have a shop mic it to be sure.
Just wanted to compare before I lug this chunk of steel back and forth
Thread Starter
10 Second Club
Joined: Aug 2010
Posts: 4,470
Likes: 197
From: Harford Co. Maryland
Thanks 
Not the greatest pic but yes...thats what I was looking for.
Mine is GM and has what looks to be a witness mark from the block machining ? A very fine spiral line look that has no ridge (as if it spun) and can't be felt by a fingernail.
No discoloration of the block like it was heated...so maybe....just maybe...only the cam and bearing took the punishment ?
Machine shop will be the know-all, end-all....fingers crossed.
Not the greatest pic but yes...thats what I was looking for.
Mine is GM and has what looks to be a witness mark from the block machining ? A very fine spiral line look that has no ridge (as if it spun) and can't be felt by a fingernail.
No discoloration of the block like it was heated...so maybe....just maybe...only the cam and bearing took the punishment ?
Machine shop will be the know-all, end-all....fingers crossed.
Yeah, not the greatest picture. I was trying to get a picture of the protrusion in the oil hole.
In my experience, you may run into a situation where you simply don't have enough bearing clearance. I had to have my cam turned over .002" on some journals.
In my experience, you may run into a situation where you simply don't have enough bearing clearance. I had to have my cam turned over .002" on some journals.
Thread Starter
10 Second Club
Joined: Aug 2010
Posts: 4,470
Likes: 197
From: Harford Co. Maryland
Unknow miles on motor
Unknow oil type/weight used
Was all factory 04 Silverado P/up that lost oil pressure and I got for a re-build.
#3 bearing....
Unknow oil type/weight used
Was all factory 04 Silverado P/up that lost oil pressure and I got for a re-build.
#3 bearing....
Last edited by Doug G; Jan 28, 2012 at 09:41 AM.
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My motor had a cam bearing rotate and block off oil. My machinist miced the bores and all were within spec so he put new bearings in. Mine did not spin the bearing only rotated. Motor is together now and has been ran hard for a year. May blow up tomorrow but so far it has performed flawlessly.
