OzVMX Forum
Marque Remarks => Spaniards (Bultaco, Ossa, Montesa etc) => Topic started by: MauriceR on February 21, 2013, 02:43:50 pm
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Are they the same head and can you use the 1977 mk10 on the 1976 mk9
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I will check on the weekend Maurice ,but I dont think so. The Mk9 was the last of the old style cylinders and I am pretty sure that from the Mk 10 onwards(till the end) used a different sealing system and locating pins etc.
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Maurice,I checked the heads today and the Mk9 & Mk10 heads appear to be the same(on the 370's I have).The heads/cylinders changed on the Mk 11 models.
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Thanks Moto... I am going to have to wait untill I receive the bike in about 1 1/2 weeks as I still don't understand why he said the 250 had 2 plugs in it