Well as in the one post where I tried to figure out what was wrong with my combination... I tried to give as much info as I could. I even took pics of the wear pattern on the valve stems to check valve train geometry.
It was suggested by a custom cam grinder (Jay Allen) and others that I needed longer push rods to correct my geometry. Jay also suggested this is why my cranking compression is “miles too low” (145psi). I have some adjustable pushrods on order to determine the correct lengther....
Well I checked my car too see what the balancer said compared to TDC.
When the piston just reached TDC it was at 12-13* on the balancer, the piston did not continue downward until well after 10* ATDC so I'm not sure if my balancer is correct or off.
Thinking that 12* was TDC (forgot about piston dwell) I surmised that the 15*’s I was running before was really only 3 degree’s. So I did the math & figured 30* would really be 18*. I’ve been driving around with 36* over the past two days there is still no detonation pinging or anything & it still starts & runs easy… top end feels better but not 100%....still feels lazy.
So here’s the question…. why can I run all this damned timing? is it b/c peak cyl pressure is so low? I'm lost!
Thanks
Mike
It was suggested by a custom cam grinder (Jay Allen) and others that I needed longer push rods to correct my geometry. Jay also suggested this is why my cranking compression is “miles too low” (145psi). I have some adjustable pushrods on order to determine the correct lengther....
Well I checked my car too see what the balancer said compared to TDC.
When the piston just reached TDC it was at 12-13* on the balancer, the piston did not continue downward until well after 10* ATDC so I'm not sure if my balancer is correct or off.
Thinking that 12* was TDC (forgot about piston dwell) I surmised that the 15*’s I was running before was really only 3 degree’s. So I did the math & figured 30* would really be 18*. I’ve been driving around with 36* over the past two days there is still no detonation pinging or anything & it still starts & runs easy… top end feels better but not 100%....still feels lazy.
So here’s the question…. why can I run all this damned timing? is it b/c peak cyl pressure is so low? I'm lost!
Thanks
Mike