Kawi2strokes.com Forum

Hi Guys,

I am in the process of collecting parts to build a late 70's RD 250 (G model according to the frame build 09/79). I have been offered a pair of cylinder heads but not sure if the hole spacings will fit the late model barrels or not. I have been advised that the holes centres of the heads are 70 x 62.5mm. Can the RD experts out there advise if these will suit the mid 70 to late 70 models?

Many Thanks in anticipation

Gordo

am not a RD 250 specialist but that I've learned with 350 400 air cooled was Yamaha made great changes over the years on bikes which seem similar

From DS7-R5/RD250-350 all the way to 1980 the TZ 250/350 top end will interchange freely as well as TZ700/750, the simple way to check what you may be considering to buy is test the fitment of a base gasket for the top end in question, the TX base gasket is one piece.