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Old March 13th 2008, 08:17
elev8_dude elev8_dude is offline
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Rockers?

This has been an ongoing problem. I set my valves and the engines hums. With about two weeks of driving (regular), the car goes back to sounding like a diesel truck. My mechanic says my rockers are worn out. It used to do this prior to getting new valves, which I have now. But even with the new valves within 2 weeks maybe 3 they start knocking and get progressively worse.

So here I am, looking for a second opinion before I have to spend $$ again.

Any thoughts.
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Old March 13th 2008, 11:57
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CLKWRK CLKWRK is offline
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I had that problem, turns out the lifters werent turning and got destroyed.
I discovered this by pulling the sump plate and peeking up in the case with a pen light, I could just barely see the lifters all chewed up in there and bits of them were collected around the strainer
Hope thats not you problem, thats a rebuild right there

good luck
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Old March 13th 2008, 20:33
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wrenchnride247 wrenchnride247 is offline
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What kind of push rods, and adjusters do you have?
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1970 T1 W/MassIVe 2913cc RAT/?EFI? w/direct fire (very soon) and 915 trans

1962 SC 1776cc SP 944NA brakes, 993 wheels

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Old March 14th 2008, 08:43
elev8_dude elev8_dude is offline
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I think:

Push Rod: Chrome alley
Adjusters: Swivel Foot

Sorry sort of an amateur
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Old March 14th 2008, 21:27
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wrenchnride247 wrenchnride247 is offline
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If you do have true cromoly push rods, then they should be set at "0" lash, not .006, or .004. Stock aluminum push rods expand, cromoly does not. (stock go to 0 lash when at operating temps.)

The swivel adjusters, if not "real 911" ones...could be causing issues also.
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1970 T1 W/MassIVe 2913cc RAT/?EFI? w/direct fire (very soon) and 915 trans

1962 SC 1776cc SP 944NA brakes, 993 wheels

VKG
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