Other Stuff > Interchangeability

500 to 550

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oldboy:
Question that's probably been asked 1000's of times before. Will a 550 top end fit on 500 crankcases??

Bryanj:
Yes and no, the early 500 had a smaller hole in the crankcase so the 550 liners dont fit, but you can bore 500 cylinders to take up to 550 +0.5 pistons

oldboy:
Thanks Bryanj, Are the heads the same and interchangeable? Does the 550 have bigger valves??

Bryanj:
The only differences on 550 are
Barrels/pistons
Gearbox
Clutch
Crankcase and clutch cover
Sprocket cover

Bryanj:
True, but but only K3 and F and it still fits and

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