Author Topic: RM250B/C piston height  (Read 787 times)

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Offline JC

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RM250B/C piston height
« on: April 07, 2011, 08:12:30 AM »
Can anyone tell me the height of  77/78 RM/PE 250 B/C  piston (67 mm bore), from top of gudgeon to top edge of piston please?

(Or for N,T pistons as I think they're the same)

Offline shelpi

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Re: RM250B/C piston height
« Reply #1 on: April 13, 2011, 11:03:39 AM »
Hi from the top of the gudgen to the top of the piston (NOT THE CENTRE, crown) but onthe side of piston is 28.5mm, all pistons from 1977-81 are the same except, the N model is a single ring and watch for the two exhaust bridge lube holes.