Britbike forum Forums British Motorcycle specific Brands Triumph bulletin board Exhaust Valve Adjustment

The Triumph that I just bought may have hotter cams, the seller said that it may have hotter cams but did not know for certain. Would someone here know of someone with a lot of Triumph engine building experience that would know if the valve adjustment would be different with cams that are not stock?

Thank you in advance

What is the Triumph you have bought? Most of the aftermarket performance cams are non-quietening ramps, so 2 thou inlet 4 thou exhaust, but the T140 and the Triumh production race cams have quietening ramps, so bigger clearances, typically 8 thou inlet and 10 thou exhaust. The T140 exhaust is the exception, having a different ramp and 6 thou gap, but no-one would describe that as a performance cam.

The Triumph that I just bought is a T120V in a pre-OIF frame.

If you do not know what camshaft you have, you would try the lobe center method to find more

measuring the cam will tell you what it is.

the easiest way to find out something useful is to just measure lift with a dial indicator. dont even have to take it apart. knowing the lift will rule out a lot of possibilities.

measure the difference between base circle and as high as it goes, divide by 1.1 and thats it.