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Posted by Chris Case [75.36.33.26] on Tuesday, August 09, 2011 at 20:49:31 :
In Reply to: Possible Head Problems posted by Robert Kosusnik [216.67.23.185] on Tuesday, August 09, 2011 at 02:13:49 :
Permissible warp is umm .006" on a 6 cyl.
Looking under a straight edge, it can lookl ike you could drive a truck through the gap, but it may be OK.
Cheapest straight edge is a piece of the precision ground drill rod from a steel supply house. You can test the rod by rolling it back and forth to see if the light in the gap changes. No change = straight rod, bent head. Now try the feeler gauge to see how much.
Run a tap down the bolt holes to make sure they are as clean as possible. Also a die over the bolts too. And Fel-Pro says to lube the bolts, or sealer. Plus lube the underside of the bolt heads.
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