Forged Piston Id Question

[rasored]

R32 RB26DETT
wondered if anyone recognises what make of piston this is and so what compression rate etc .
i have measured the bore and it is 86.66/86.88 average callipers used !!

any help gratefully accepted , thanks

this is my daily so need it sorted as have to calculate what gasket to use ...

[Duncan]

That's a standard piston mate, the O5U is the giveaway it is the GTR part number. The number on the piston is the grade (1, 2 or 3).

In any case, use a standard head gasket.

[SiR_RB]

that is correct, standard pistons