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P to V Clay results

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Old Feb 2, 2006 | 02:22 PM
  #1  
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Default P to V Clay results

Well, my Cometic .051" gaskets came in yesterday. I clayed the pistons and came up with these results:




The squish (red arrows) is now about .040" (.038-.042 depending on how hard I squeeze the calipers ).

The PtoV clearance belongs to which set of colored arrows (Green or Blue)?

For the Green I measured .166" (int) and 0.142" (exh)

I noticed that the side of the valve to the inside of the valve relief (blue arrows) is tighter. That measured .077 (int) and .090" (exh) but I think I squeezed a little too much with the sharp part of the calipers.

So it all looks good. I think I am going to clay every cylinder just to make sure there are no problems and everything repeats.
Attached Thumbnails P to V Clay results-both.jpg   P to V Clay results-exhaust.jpg   P to V Clay results-exhaust2.jpg   P to V Clay results-intake.jpg   P to V Clay results-intake2.jpg  


Last edited by ROCNDAV; Jul 22, 2008 at 06:34 PM.
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Old Feb 2, 2006 | 10:04 PM
  #2  
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From: longview, tx
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Put clay at the top and bottom of the squish areas and average them out. Clay on only the top half of the piston will cause it rock in the bore and give you funky numbers.
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Old Feb 2, 2006 | 11:30 PM
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THanks I will try that. Not too much area at the 3, 6 or 9 O'Clock positions, but I'll try it.
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Old Feb 2, 2006 | 11:36 PM
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From: Justin, TX
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good to see picture results for something like this. It should clear up some newb questions!
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