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CMcAllister · 07-01-2014, 03:36 PM

IIRC, the dial back type lights will work OK if you leave it set on "zero" and rely on the marks on the damper. I believe the issue is that if you rev the engine up to check total, the electronics can't quite keep up and they end up a few degrees behind. The higher the RPM, the farther off they are. I believe MSD prefers a non-adjustable light be used.

07-01-2014, 03:36 PM	#10
CMcAllister Senior Member Join Date: Sep 2006 Location: Fulton County, PA Posts: 603 Likes: 15 Liked 890 Times in 248 Posts	Re: It's Timing Light time! IIRC, the dial back type lights will work OK if you leave it set on "zero" and rely on the marks on the damper. I believe the issue is that if you rev the engine up to check total, the electronics can't quite keep up and they end up a few degrees behind. The higher the RPM, the farther off they are. I believe MSD prefers a non-adjustable light be used.