Can Cam Timing Effect Normal Ignition Timing?
#1
Can Cam Timing Effect Normal Ignition Timing?
The cams installed (SC330) called to be set at 2.2mm - 2.4 mm on the cam card. Then after the cams was installed I was told they really should have been set between 1.8mm - 2.0mm. The cams went in a 2.2 on the money which = (Advanced Cam Timing).
Now the question, We know what the normal ignition timing setting is (26-28 @ 4000), could these advanced cams cause me to use another Ignition setteing?
I am grasping for straws.
I can't figure out why these new B&B headers are glowing red.
Now the question, We know what the normal ignition timing setting is (26-28 @ 4000), could these advanced cams cause me to use another Ignition setteing?
I am grasping for straws.
I can't figure out why these new B&B headers are glowing red.
#2
The ignition timing is spark versus posiion of the piston, the cam timing is piston to valve timing. An ignition timing change won't compensate for an error in cam timing, retarding the timing for example makes detonation an issue regardless of the cam timing. I don't have numbers on the sc330 cams but 2.2 seems large to me compared to 1.16 to 1.36 for 964's and 1.4 to 1.7 for the SC's. Worth looking into for sure.
#3
I don't think your cam timing is the problem.
Also, who is stating that your cams are not timed correctly, when you have the instructions with the timing range? The mfg of the cam is who you should always listen to. The SC330 is a good CIS cam - I had them on my CIS turbo that produced +400rwhp. You can really have a quick CIS motor with proper cams, proper cam timing, and a good valve adjustment.
Also, who is stating that your cams are not timed correctly, when you have the instructions with the timing range? The mfg of the cam is who you should always listen to. The SC330 is a good CIS cam - I had them on my CIS turbo that produced +400rwhp. You can really have a quick CIS motor with proper cams, proper cam timing, and a good valve adjustment.