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GSF1200 Pistons (Pre 2001 vs. Post 2001) ?


nightrider

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Posted

So what the heck is the difference between the Pre-2001 and the Post-2001 pistons in the Blandit motors?

The pistons and cylinders have different pt#'s but everything else is the same (crank, rods, pins, cylinder head).

Most of the aftermarket head gaskets and piston rings stop at 2000.

Everything i see on the interweb has all Blandits at the same claimed capacity (1157cc)

What gives?

Higher compression pistons?

Posted

     in 2000/2001 when the mark 2 came out they had modified pistons to improve  the oil cooling. in some bikes the consumption was deemed excesive, so there was a mod to the pistons, the later  ones after vin 22102179, were fited with differant pistons, the older ones ars no longer available :tu

Posted

Yup, oil return holes had too larger over lap with the ring recesses and oil got burned!!  I have a set of the "bad" pistons.  I'd like to have a set of the newer pistons to measure the difference in the oil return hole diameter.

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