Hi all , I understand that 1986 build NA carby pistons are supposed to be 8.7:1 compression ratio . Can anyone tell me how to tell the various EA82 NA pistons apart CR wise ? Part numbers would be handy as well if anyone has them .

 

Cheers and thanks , A .

Carbureted pistons differ in looks from SPFI only by the fact that SPFI pistons are directional. That is, they both have the half moon indentations, but SPFI will have an R or L and an arrow pointing to the front of the block. Carb pistons do not have that.

 

Turbo pistons dished.

 

MPFI uses SPFI pistons in a turbo block.

 

Emily

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