piston ring end gap

[mick094m]

Anyone help with the end gap for a GP200, oversize piston 67.6

[chris2470]

I like to use 0.10mm per inch of bore.
Thus 2.66 inches x the above is 0.26mm or 11 thou.

Hope this helps

[156 D]

..........ring gap should be between 7 to 12 thou......depending how you want to treat it straight afterwards???.....

[RinB]

This is what I use

Std type kits upto ST4
Bore........ Gap thou of Inch
70mm..............11..
66mm..............10..

Tuned/race type kits
Bore........ Gap thou of Inch
70mm..............13..
66mm..............12..

[mick094m]

thanks for the help