Honda-SOHC

Other Stuff => Interchangeability => Topic started by: oldboy on September 23, 2020, 03:56:11 PM

Title: 500 to 550
Post by: oldboy on September 23, 2020, 03:56:11 PM

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

Title: Re: 500 to 550
Post by: Bryanj on September 23, 2020, 04:39:50 PM

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

Title: Re: 500 to 550
Post by: oldboy on September 24, 2020, 04:02:57 PM

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

Title: Re: 500 to 550
Post by: Bryanj on September 24, 2020, 04:34:03 PM

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

Title: Re: 500 to 550
Post by: Bryanj on September 24, 2020, 11:26:32 PM

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

Title: Re: 500 to 550
Post by: oldboy on September 25, 2020, 11:01:11 AM

Question answered, Won't bother!!!!!!!