 Valve adjustments |
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| neyen14 |
 Aug 22 2010, 10:15 AM
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#1
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Member  Group: Members Posts: 67 Joined: 2-December 07 From: New Mexico Member No.: 8,408 Region Association: Southwest Region  |
I have a '72 with a 1.7L that has 96mm pistons in it. I get this engine rattle at 2600rpm and it goes away around 3200rpm. I have gotten some info, among other types of info, that it might be the valves. I have them at .006 currently and wondering if I should have the exhaust valves at .008? Thanks for your help.
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| Cupomeat |
Aug 22 2010, 01:47 PM
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missing my NY 914 in VA Group: Members Posts: 1,336 Joined: 26-November 07 From: Oakton VA Member No.: 8,376 Region Association: MidAtlantic Region |
Hmmm, well, if the heads are rebuilt with the sodium filled 2.0l exhaust valves, You can go to 0.008, but otherwise look elsewhere for the rattle in my opinion.
What pistons are in it? Some pistons (96mm) are now built without a piston pin offset, which increases piston slap, which might be what you are hearing. I hope that helps. |
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| neyen14 |
Aug 22 2010, 08:56 PM
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#3
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Member Group: Members Posts: 67 Joined: 2-December 07 From: New Mexico Member No.: 8,408 Region Association: Southwest Region |
Thanks! I re-did the valves and the noise is no longer... apparently 2 and 4 were a lil tight
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