Quote:
Originally Posted by Rabrooks
A grade
85.985 to 85.995 mm (3.38523 to 3.38562 in.)
B grade
85.975 to 85.985 mm (3.38484 to 3.38523 in.)
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My block is a BBBB so should be smaller pistons all over, talked to a buddy of mine and he is pretty sure that the R3/R4 is just a casting number, that tells what series the pistons are made in, so I think I just have to go on and order som new piston rings and hone it and call it a day unfortunately.