OzVMX Forum

Clubroom => Tech Talk => Topic started by: JC on April 07, 2011, 08:12:30 am

Title: RM250B/C piston height
Post by: JC 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)

Title: Re: RM250B/C piston height
Post by: shelpi 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.