Camshaft Timing

Camshaft Timing

Joined: March 30th, 2010, 9:02 am

June 23rd, 2012, 10:39 am #1

Hi,
Looking for some feedback from anyone who has played around with advancing camshaft timing & retarded ignition timing on a Clevo.

I wanted to try advancing the cam timing to bring the cam on a litle earlier in a run.
2 deg advanced brings the cam timing to exactly what the Crane cam card spec is, the cam is a 528821.
I have tried zero,2,&8 deg advanced, I can go as far a 8 and still have .085 inlet valve to piston clearance.
The engine seemed to get lazy about 400ft with 8deg advanced, so I moved it back to 2adv.

I also wondered if I should try advancing the cam to get the half track times down, then pull timing out with the MSD in the top end.
Thanks
Rod
Quote
Like
Share

Joined: May 20th, 2005, 4:48 pm

June 23rd, 2012, 12:08 pm #2

If its only purpose is for racing, take into consideration how well it hooks and then how well it traps. Advanced cam timing could net you a better hole shot, or it could blow the tires off...



Brent Lykins
B2 Motorsports, LLC






Quote
Like
Share

Joined: March 30th, 2010, 9:02 am

June 24th, 2012, 10:10 am #3

Brent,
Yes, 1600lb altered.
I was interested to know if advancing the cam for down low power and retarding ignition timing for top end power was do-able, or just a waste of time.
Thanks
Rod
Quote
Like
Share

Joined: May 20th, 2005, 4:48 pm

June 24th, 2012, 11:54 am #4

...that's how you learn different combinations. I would try them both.

Brent Lykins
B2 Motorsports, LLC






Quote
Like
Share