Ok, now i know there are A type and B type Type-S pistons. I have in my hand a Type-S piston that has no A or B stamped on it. Is my piston an A (cause thats what i need)? Also does anyone have the part numbers for both the A and B type pistons?

 

Ok so no one on this board has bought Type-S pistons and made sure they were the right ones. Come on guys.

 

I wasn't aware that there were two different types of Type-S pistons... Maybe I'm just slow on the uptake, could someone tell me the difference?

 

Ok, I am even slower than the other guys...what is the difference between an Type S prelude and a type SH ?

 

A = no stamp. the Bs have a letter stamped on the top of the piston

i mihgt be able to get u the part #s when i get home tonight if i can find the boxes i did them several months back, the part# was somethin like p47-j00 if that helps any


[Modified by DarkJedi, 3:47 PM 11/24/2002]

 

A type are standard drop ins. the B type are for .25mm overbore, aka rebuild pistons.

 

There are two different bore sizes in the production block. Your block is stamped on the deck to let you know what bore size you have. No letters are "A" pistons. Bore size is 86.993mm-87.006mm. "B" pistons are marked. Bore size is 86.983mm-86.996mm. "B" pistons are 13020-P5P-J00 I believe.