PW3 camshaft
- Thread starter pierodn
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johnm
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If you go with the PW3 do not torque the cam nut to more than 25 ft/lb plus low strength locite or the shaft may snap at the thread root. These cams are made from cast iron which is fine but cannot take the torque recorded in the workshop manual.
Again the choice does depend on riding style the PW3 is reasonably sporty. I use PW3 on my race bike and standard on my street bike.
Again the choice does depend on riding style the PW3 is reasonably sporty. I use PW3 on my race bike and standard on my street bike.
I use PW3 camshaft on my race bike, to fit it into 850 MK3 crankcase, i had to machining the camshaft place because the cam touch de crankcase. Whit the 750 or 850 before MK3 i don't know if there is the same problem.
With standard ou 2S i think, there is no problem, betewen standard and PW3 the cam are about 2mm higher on PW3. The timing side crankcase is machining on the photo.
Gilles
With standard ou 2S i think, there is no problem, betewen standard and PW3 the cam are about 2mm higher on PW3. The timing side crankcase is machining on the photo.
Gilles
I have a PW3 which i am fitting into a mk2a 850 engine i have also had to open the cam tunnel to allow the cam to revolve. As i understand it this is quite common and is mentioned in Mick Hemmings engine rebuild dvd and also in fitting instructions for cam.
I have removed excess alloy with a die grinder and rotary sanding drum by hand a little at a time where needed. I am however not sure how much clearance to give to allow for expansion when the engine is hot. I want to keep the tunnel as close as possible to the cam to help with oil bath effect on start up can anyone advise on the clearance required??
I have removed excess alloy with a die grinder and rotary sanding drum by hand a little at a time where needed. I am however not sure how much clearance to give to allow for expansion when the engine is hot. I want to keep the tunnel as close as possible to the cam to help with oil bath effect on start up can anyone advise on the clearance required??
toppy said:
It's what i want to say with my little english.
You must look the tappet tunnel too :
http://www.normanwhite.co.uk/p_w.htm
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