Quote:
Originally Posted by Bet Winner
I rebuilt my RAIII engine in 1980 with 30 over TRW "Power Forged" stock appearing pistons--probably the same piston. If I remember correctly, TRW did not call for as much clearance as the factory RAIV used--due to the nature of these pistons.
I have a number in my head, but I'm a little hesitant to throw it out since this was 1980. But I do know that if this is the same piston, you can build the engine a little tighter than the RAIV factory specs because these pistons did not have the same expansion rate.
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You said you have a number in your head. I won't lock you into this since it's from memory, but so far, I have half of my (non-forum) references giving me clearances of .002 to .0025 and the other half telling me it's in the .005 to .007 range. What do you remember using for your rebuild? My pistons are likely similar to yours. Thanks OJ
