[Fot] Kastner A7 in 1147 Spitfire Questions

[Larry Young]

Isn't the 0.013 supposed to be cam lift, not valve lift?  I find it is 
much more accurate to set the cam by lobe center. At 0.013 you can get a 
lot of error because the lift changes so slowly.  If the lobe is 
symmetric the center is at 108 for the 42-76 numbers.  I would suggest 
you thoroughly degree the cam, i.e. measure the entire profile for #1 
inlet and outlet.  You can then determine what you've got regarding 
duration, lobe separation, profile symmetry, etc.  I explain how on my 
website and provide a sample spreadsheet 
(http://tildentechnologies.com/Cams/Tips_Takes.html).  Let me know if 
you need some help.
Larry Young

On 10/4/2013 Isn't2:05 PM, Joe Guinan wrote:
>
> I know I have TDC on the crank set correctly. I'm seeing 42 degrees on the
> degree wheel when the dial indicator on the top of the pushrod shows the
> valve has opened .013 inch.
Ex