![]() If you want the ultimate set-up go get an adjustable timing pointer like Tavia makes, set it to true TDC with a piston stop or use a dial indicator and a degree wheel with the head off to set it and lock it in place, and then use an engraved balancer. How accurate can that really be?Īs long as you are just using that style dial-back increment as a reference point though, it really isn't that bad I guess. ![]() On the cheaper ones, your going by a knob with a pointer on it using either molded-in increments in the timing light housing or a decal on the back. I always thought they were a waste of money. This is especially prevalent on engines with a chrome or stock timing chain cover that is actually bowing forward allowing the cam to "walk". On Chevrolet engines, if the timing is retarding 10 - 20 degrees inspect for cam-walk. The correct polarity is whichever connection gives the most retarded timing. Reverse the connectors and check the timing again. It is best to route it along a ground plain such as the firewall, frame or engine block to form a shield around it.Ĭheck the polarity of the magnetic pickup wires of the distributor. It should be routed clear of the coil primary wires and plug wires. Inspect the routing of the Magnetic Pickup Harness. ![]() Make sure you are not using Solid Core wires. Try another non-adjustable light and check the timing again. Dial back timing lights are not recommended. What kind of timing light are you using? Many lights have trouble reading the MSD's capacitive discharge multiple sparks. If your timing seems to be jumping all over the place, check the following items: Here is something from MSD's site, I think they might know best: I bought a Flaming River self-powered cheapie and it works great, but I have a fully degreed damper. I that case, temporarily use a smaller diameter wire and you'll be fine.Īs I've stated here before, even MSD will tell you some dial-back lights won't work with MSD ignitions-my 25 year old Craftsman will not work properly with my ignition. On edit: There may be some inductive pickups that will not read through some of the thicker plug wires. I'll take you up on a beer when I show up! There are plenty on NON-DIGITAL lights that will work just fine with multi and long duration spark ingition systems. My initial and my centrifugal advance added up equals the total that the Craftsman reads, and at the correct RPM that MSD says it will be at with the various springs. From initial to full advance, if I change the springs, the curve changes with the RPM's that MSD states in their documentation. I also have a complete MSD ignition system from the box and coil to the Pro-Billet distributor as well as the 9mm MSD wires. The Craftsman, it's not a digital one like the Snapon's or 20 other DIGITAL type timing lights. I have the timing light jut like the one I posted with the link above. But to make a blanket statement as you did is incorrect. They have a hard time with the multi spark or long spark duration such as MSD and other brands. Click to expand.Now if you would have stated that DIGITAL/Computerized timing lights can be inaccurate that is one thing.
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