How can you tell if you have flat cam lobes?, Strange lash issue |
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How can you tell if you have flat cam lobes?, Strange lash issue |
tornik550 |
Jun 15 2012, 02:27 PM
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#1
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Senior Member Group: Members Posts: 1,248 Joined: 29-January 07 From: Ohio Member No.: 7,486 Region Association: None |
I am paranoid of developing flat can lobes on my recent engine rebuild. I am paranoid cause I have heard so much crap about the cam that I used- scat c45. I am asking this more for curiosity sake. I had a strange issue but I am certain it's unrelated. I set my valves on cyl 1 to 0 lash (chromoly pushrods). I did that at tdc for that cyl. Te intake and exhaust valves. Seem to lift normally. The issue is that at a different point in the cycle (other than tdc or full lift) the valves are very loose. The valves go back to zero lash at TDC. The compression is actually about 5 points better on that cylander. I think it's possible that the rocker shaft bolts may have loosened a bit, however I've already removed them. It doesn't sound like a flat lobe to me.
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yeahmag |
Jun 15 2012, 02:30 PM
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#2
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Advanced Member Group: Members Posts: 2,422 Joined: 18-April 05 From: Pasadena, CA Member No.: 3,946 Region Association: Southern California |
Sounds like you are setting it backwards. It sounds like you are setting the lash when you are on the nose of the cam (max lift) vs. the foot of the cam (no lift).
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tornik550 |
Jun 15 2012, 02:50 PM
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#3
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Senior Member Group: Members Posts: 1,248 Joined: 29-January 07 From: Ohio Member No.: 7,486 Region Association: None |
Sounds like you are setting it backwards. It sounds like you are setting the lash when you are on the nose of the cam (max lift) vs. the foot of the cam (no lift). Me...do something backwards? Haha If its backwards why would it run so well? The intake and exhaust valves are not loose at the same time. |
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