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Bruce Allert's Avatar
 
Join Date: Jun 2002
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Question Valve adjustment

I have adjusted my valves twice within the last month. I have a 1.7. I set them according to the Pelican Parts tech listing but they get noisey faster than I think they should. When I checked them the first time (before adjustment) most of them seemed to be adjusted too tight but they never made as much noise as I'm hearing now. Are the nuts supposed to be torqued to a specific poundage to insure that they don't come loose? Can they be overtightened? Everytime I've set them I go back through them and check that they've remained set. Can the adjustment screw be so worn that it's allowing them to come out of adjustment? Help! What am I missing?
bruce
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Old 08-23-2002, 04:48 PM
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There is no official torque spec for the jam nuts. And I think it would be pretty difficult to get a torque wrench on them anyway...

The adjusters can be worn. Take one out and look at it. Unevenness or pitting is not good. Also check the valve tips that the adjusters hit--they should be flat.

Another possibility--particularly if this is your first valve adjustment--is that you're setting them a little too loose. The first time I adjusted my valves (actually in a non-Porsche) I set them waaaaay too loose. I was able to talk an experienced buddy into coming over and checking my work, and he did one cylinder's worth for me. That was enough to give me the "feel".

--DD
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Old 08-23-2002, 05:10 PM
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