SOHC.co.uk Forums > CB500/550

Cam re profile.

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Laverdaroo:
Evening peeps,
As most of you know the bike's in bits again and whilst the lids off I thought it might be a good wheeze to get the cam reprofiled to allow a bit more duration both in and out to improve what midrange there is and basically be a faster bike than Phil's just so I have the mental edge, yer know ;D

Anyway, has anybody had this done and if so where at and at what bonkers cost was it? AND, was it any good post op?

I've sent a message to Newman's but whilst chatting to a few on here a discussion was mentioned with reccomendations and I can remember the thread but cant find it Any avice chap's and chapess's'sss?

SteveW:
I’m about to put in a CB650 cam in my 550, supposed to be a nice performance upgrade.

Nurse Julie:
John Webley has a Newman Cam in his CB500/4

Sesman:
“Faster than Phil’s”….my arse.  Go for the CB650 profile…£100 quid or so regrind…. Best contribution is the inlets Roo. Port matching and raising the inlet roof and casting removal will achieve the best results. Frankly though, don’t bother.

Laverdaroo:
Cheers all. Yer reckon Phil, or are you scared I'll smoke yer ;D ;D ;D? Yeah, right 8)

 I'm interested to see how Steve gets on after his 650  cam install mind? Steve, have you done al the porting required as well or just gone for the cam etc.?I have nothing tho guage against as I've never ridden one but my cam is deffo showing its age and a freshen up wouldnt hurt tbh. If its gonna get a refurb, if poss, I might as well try to get a bot more out of it if material has to be put on, ground off, whatever.

Just a thought ......

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