SOHC.co.uk Forums > CB500/550
Cam re profile.
Laverdaroo:
Cheers John, that sounds just the thing, did you do any porting work or just the cam install after the re grind?
I’d like a bit more poke but don’t we all, (leave it Phil!!) and really thinking I’ll do this before I put the top end back in. It’s only the duration that changes or are you modifying the timing to suit? Don’t want to open a can of worms and all that…….
Sent from my iPhone using Tapatalk
Johnwebley:
--- Quote from: Laverdaroo on March 18, 2023, 10:57:24 AM ---Cheers John, that sounds just the thing, did you do any porting work or just the cam install after the re grind?
I’d like a bit more poke but don’t we all, (leave it Phil!!) and really thinking I’ll do this before I put the top end back in. It’s only the duration that changes or are you modifying the timing to suit? Don’t want to open a can of worms and all that…….
Sent from my iPhone using Tapatalk
--- End quote ---
just fitted the cam,
I think they must grind about 1mm of the base of the cams,
its how Yoshimura started in Japan
Laverdaroo:
Yeah except he probably did it with bamboo, underwater whilst practicing his ninja skills or something bonkers. He was a true alchemist wasn’t he
Cheers John, top info, I sent them an exploratory email last week so I’ll hang on and see what they come back with as a starting point for making a decision.
Much obliged
Sent from my iPhone using Tapatalk
Oddjob:
I was quoted £100-120 for a cam re-profile Roo, this was on Feb 9 2022.
I wanted 5 degree more overlap and 10 degree more duration as it's supposed to wake up the engine mid range. I don't want a cammy engine, just one that's tractable throughout it's range.
I also intend to match the inlet ports and enlarge the roof of the port a little.
Phil did you trim the vac gauge screws so they don't protrude into the inlet tract?
Laverdaroo:
Cheers Ken, building a mental justification for the whole affair as money is running a bit short for the build now I’m towards the end. I’ve still paint and seat to fork out for. Bryan has offered a donor cam so I’m not without if I do send it away so it’s not like it’ll be dormant whilst aesy. I had a quick chat with newmans today as somebody was in the office and gave me a call, they quoted similar costs and about a week turn around depending on severity of wear, etc.
On a plus side, my badges came today so they’re off down to Matt’s when I get two mins to be made smaller and a bit more suited to the bike. For aftermarket, they’re pretty good for the 40 odd quid I paid for them. Heavy though
Sent from my iPhone using Tapatalk
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version