factory ignition timing
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Evolved Member
Joined: May 2003
Posts: 2,815
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From: Davidson, NC
factory ignition timing
Does anyone know what the factory ignition timing should be @ 4000 rpm? The dealership here doesn't even know and any help would be beneficial. My best guess would be around 32 degrees btdc. sound right?
Under what load? Just cruising (neutral throttle) you may see timing that high, but under full throttle timing would likely be around 10-12 degrees.
Example, when staging at the track I see 40 degrees of timing at 3988 rpms - no load. The lowest rpm I see during the run is 5210 which is right after I launch and I see 22 degrees of timing. After each shift, rpms drop to ~5600 rpms and timing drops to 10-12 degrees and climbs to 22 at redline. HTH.
Example, when staging at the track I see 40 degrees of timing at 3988 rpms - no load. The lowest rpm I see during the run is 5210 which is right after I launch and I see 22 degrees of timing. After each shift, rpms drop to ~5600 rpms and timing drops to 10-12 degrees and climbs to 22 at redline. HTH.