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Well back on the P11 renew upper end project.

My P11 has the JS Motorsports longer rods/shorter pistons......and it ran well for 3000 miles, but developed low compression. After removal, disassembly, measurements, .....it is apparent that the headgasket, 'tween the cylinders, was the issue.

This came apart early 2016, I bought a new tour bike, and this sat until now.

I used my surface block (12 x 18 x 3) to resurface the head and cylinder.

There were scratch flaws 'tween the cylinders on both.


[ATTACH=full]4531[/ATTACH]


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