timing a extreme energy comp cam

[red cuda]

what is the timing I need to set this? is it at 22 degrees before TDC? that's whats on the card, just want to make sure. 256 xe

 

[txstang84]

Are you trying to ask where to set your intake opening event? Most of the time when people talk about setting their cam timing it's about the intake centerline, which for a COMP XE cam ought to be 106*, as ground (COMP usually grinds their cams 4* advanced), unless you want to advance or retard the timing.

 

[67Dart273]

what is the timing I need to set this? is it at 22 degrees before TDC? that's whats on the card, just want to make sure. 256 xe

When you post this kind of thing, it is a BIG help if you go look up the source website for the part, part number, etc, and post what it is that you are referring to. Saves the rest of us searching it up.

 

[OldmanRick]

Wrong company.....same principle.

http://www.lunatipower.com/Tech/Cams/HowToDegreeACam.aspx

 

[red cuda]

I guess what I mean is when I put the timing light on it. not really understanding what it shows as far as how many degrees before TDC.

 

[fishy68]

I've never seen a cam card that says what to time the ignition timing at and I've seen a lot of cam cards. I think your confusing cam timing with ignition timing. If you time the ignition timing to 22 BTDC without knowing how much centrifugal advance is in the distributor your total timing may be 50 degrees and destroy the engine. You need to verify how much centrifugal advance is in the distributor. Most stock distributors have quite a bit of centrifugal timing advance in them.

 

[67Dart273]

I guess what I mean is when I put the timing light on it. not really understanding what it shows as far as how many degrees before TDC.

Cam timing (the rotational relationship between crankshaft, no1 piston TDC, and the cam) and ignition timing are two different things.

Basically, INITIAL or IDLE timing is what you set (on a stock car) at slow idle with vacuum advance unhooked.

MECHANICAL advance is the spring loaded, centrifugal advance, both rate and amount ( RPM on the springs, and mechanical limits of degrees change), and MECHANICAL added to INITIAL is "what" the engine sees with all the advance 'in' at high RPM/

VACUUM (if used) only works at part/ light throttle mostly for "cruise" and drops out as you give it more and more throttle, dropping back to initial + mechanical above

There has been many many threads written on this:

http://www.forabodiesonly.com/mopar/showthread.php?t=158842

 

[Abodybomber]

What timing light,are you using? Let's start there. One step at a time.