Lovely sunbeam

Lovely sunbeam
Lovely Sunbeam (and Annierose) 88-99-PF

Tuesday, 19 April 2016

What cam is it!



I don't know what the camshaft is, I suspect a fast road cam.

It has a "P" and number 401 and 112.
I hope it means Piper cam
0.401" lift & 112 degrees inlet full lift.
But probably wrong.

I started by measuring the camshaft with the dial guage on the cam followers.

I got a 60 degree overlap and 173 degree duration.

I set the camshaft to be in the middle of the overlap at TDC






Then checked the timing again against the crank.
Measurements then didn't seem quite so obvious.

I began to worry I had a full race cam.
Thought best to install the cylinder head and measure on the rockers.

Tomorrow... maybe.



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