Originally Posted by DanMay
How did the 336 work out in your 500cc race motor ? I am interested in your experience, and curious if the smaller displacement and valve size will benefit from the 336 profile. I am currently racing a R50/5 with the stock camshaft.
Its still on the bench at the moment, the rules here allow you to run parts that " look the same"....
So its really going to be an R45 motor with R65 heads, 336 cam and a light valve train.
I have not heard of anyone doing this....probably good reason.
Cylinder wall needs a smidgen taken out but shrouding could be an issue....as might the 36mm inlet ports.....its suck it and see territory.
For a r50/5 the 308 cam would probably work better .....once again pure supposition.