Checking deck height
I had time to measure
I had some time to check at the center of the piston at the edge of the quench pad.
Would you say it is safe to call it .020 out of the hole and order Cometic gaskets to give a .040 quench? Which would be .060 gaskets?
Thanks
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I’m confused by your numbers. How far is the quench pad out of the hole. The rest of the piston doesn’t matter at this point.
From what I see, the even side is put further than the odd side. You have to make those two equal. What’s happening in the center of the piston is really of little consequence.
BTW, I forgot to mention about piston “rock” and how easy it is to get out in the weeds in this stuff.
The only way to eliminate rock is to find some thin tape and tape off the skirts so there is near zero clearance and then measure the piston deck clearance.
If the piston is junk, and many are, or the piston is wrong for the application then you can have rock issues. You can see it on the piston above the rings.
If the piston isn’t junk or wrong, at operating temperatures the piston has very Little Rock, if my unless someone living in 1975 did the hone.
So getting ate up by piston rock is really picking the pepper out of the fly poop.