Valve geometry hell |
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Valve geometry hell |
malcolm2 |
Jun 25 2020, 09:19 PM
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#1
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Advanced Member Group: Members Posts: 2,738 Joined: 31-May 11 From: Nashville Member No.: 13,139 Region Association: South East States |
Help me out here. Working on the subject and can’t figure it out.
9590 cam. 0.426 lift on the card. Adjustable pushrod tool. I get to 0.426 lift. But the geometry between the swivel foot and the valve is wack. That is shortening the PR. Stretch out the PR and i get 0.430 lift and almost straight valve to adjuster. The foot is too tight to the 1.7 rocker boss. Bought some shims to lift the rocker stand and try that. Question is: why am I so far off the card lift? Does it matter? |
malcolm2 |
Jun 26 2020, 09:49 AM
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#2
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Advanced Member Group: Members Posts: 2,738 Joined: 31-May 11 From: Nashville Member No.: 13,139 Region Association: South East States |
The counter sink is a nice touch. great picture. Tells the whole story. Not sure I can do that. Might have to take them somewhere.
I measured the boss (isn't that what the threaded part of the arm is called?). I got 0.492 on two, 0.502 on one and 0.496 on the last. I figured to take the 0.060 from the 0.492 and get 0.432. Then shoot for that on all 4. So at this point all my lift attempts with the adjustable push rod tool have yielded a lift with in +/- 5% of the card. So I should not worry about the final lift result? |
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