SOHC.co.uk Forums > CB500/550
Cam re profile.
Bryanj:
I dont think the cams are hardened as the rockers are
mickwinf:
I bought a spare engine for Lazarus which included a 650 cam and modded head. The previous owner was a bike mechanic and smoothed and ported the head and inlet ports. The 650 cam may foul the head so some metal has been removed to clear. I have used the head but not the camshaft as I heard there is some problem with the tachometer drive being different?
SteveW:
Info here:
http://www.chinonthetank.com/2016/05/cb650-cam-in-a-cb550/
McCabe-Thiele (Ted):
I've used Piper cams in the past in Mini A series engines tbh in the early days they were not as good as BL Special Tuning parts but improved over the decades. Iirc the case hardening was an issue they sorted. The sporty ones used to cause issues with rocker shaft wear due to the extra load from the profiles.
Johnwebley:
--- Quote from: Nurse Julie on March 17, 2023, 09:30:47 PM ---John Webley has a Newman Cam in his CB500/4
--- End quote ---
I bought a SH cam to use as doner,,
asked Newmans for a "fast" road profile,something to increase the grunt above 6K.
it has been succesfull,
the bottom end is still sweet like a pussycat,but as the revs rise it feels better,during normal journeys it breaths better ,cruising between 5 and 6k on less throttle,good fuel economy,60+ to the gallon,
made over taking in 3rd much better,romps up to 9k,
cost about £160
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