Mike----The ring gaps for the +.020 AE pistons I received had top ring
gaps of .010 and second ring gaps of .008. I didn't have to do filing.
Smaller gaps usually help prevent crankcase blowby, so these smaller
gaps were OK for me. All were within 4 grams of each other in weight,
so that was nice, too.
Dick
From: mblunsfordsr@yahoo.com(michael lunsford)
I have reached the point where I need to prepare the piston rings for
the .020 overbore for my block and new pistons. If I recall correctly
the rule of thumb is .004 to .005 per inch or roughly .012 to .015 for
the nearly 3 inch bore in my block (the motor not my head). Before I do
anything I will be sorry about are these figures correct? I'm just
looking for a "fast street" (whatever that is) rebuild so this is not
going to be used for race applications though I may use it for an
occassional autocross.
I am having the little ends of the rods resized for
the new bushings and wrist pins and the big ends of the rods
checked/resized for the .010 I had removed from the rod and main
journals on the crank. I am also having the big and little ends of the
rods balanced after I ground off a bunch of extra metal. I am using
those triple plated King engine bearings I got from Kai for the
bearings. Am I missing anything here? TIA.
Mike Lunsford, 1970 TR6 TBI with bad #1 rod bearing/crank
throw.
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