Cam identification

[Steve.Smith]

Hi all. I have a 1938 VG engine in my bike that has been fitted with a single lobe cam. Is there any way to tell if it has been ground with the quieting ramp? Should I stick with the 0.002" clearance?
Steve

[will_curry]

Steve,

You could do worse than look at the following thread:

viewtopic.php?t=13444

I'd stick with the 0.002" clearance with an unmarked cam but I'm not
sure what I ought to do with an 'A' cam.

[paul.jameson]

If the pushrods are alloy, go to 6 and 8 thou. If they are steel, 2 thou will be ok provided that you set each tappet when the foot of the cam follower for that tappet is at 180 degrees to maximum lift of the cam.

[Steve.Smith]

Thanks for the replies. I know that the pushrods are steel so will stick with the 2 thou setting. I did try it with the 6 & 8 thou setting but it seemed very noisy. No doubt at the end of the year I will be looking for a bit more speed!
Many thanks, Steve