[Healeys] Cam Timing

[Dave Schweninger]

David
Did you ever get squared away on your cam timing? Your procedure is  
different than what I normally do. Generally, after locating TDC, I  
put the indicator on the valve spring retainer. When it starts to  
rise  that degree number should match the "inlet opens" at X degrees  
BTDC. If you Zero the indicator when you start, you will see the max  
valve lift, (this could vary depending on the rocker ratio) and when  
it returns to zero you have the" inlet closes" number. It's pretty  
hard to the exact degree of max lift from the top of the cam lobe as  
there is an infinitesimal amount of valve movement in that period.  
Also cams tend to wear on the up ramp side.
All this assumes correct valve clearance.
It would be interesting to know how it came out.
Good luck,
Dave and Daisy.


On Aug 5, 2007, at 4:13 PM, David Masucci wrote:

> 6 or 7 years back I did an amateur rebuild of my BJ8 engine. As of  
> today the
> compression differential from cylinder to cylinder is under 5 %. It  
> sounds
> mechanically tight and I think it is.
>
> I've never been fully convinced that I have it running as well as I  
> think it
> should run. It runs good and pulls as I'd expect up to about 3000  
> RPM or so.
> After that power seems to fall off.