3/13/2024 0 Comments Advance timing light instructionsYes, you can do the same thing with a degree tape or a degreed damper, but you might need two people to be able to watch the tach and damper at the same time. Then you look to see how many degrees you have the light advanced. I just went to my desired rpm and clicked the advance/retard button until the timing mark flashed on ZERO degrees. It has two digital windows side-by-side, one reads rpm and other reads the advance you have it set at. Got to say it was REAL easy to determine when your advance is coming in. I used a friends Snap-On digital a couple of weeks ago. He said the others, (dial type),will be off by 4 or 5 degrees when you are at full advance. If I got this all wrong I appologize in "advance" !!!! HA! HA!Īccording to Ignitionman the only rollback lights that work with modern ignition systems are the high end digitals like Snap-On, or MAC. as I would like to own one of these useful tools myself! I am no help as far as what brand to buy, but I will watch other replies to your post and see what suggestions other guys may make. At the risk of teaching you to suck eggs Chris (and this is because I am rubbish with computers) type in Snap-on MT1241 timing light user instructions and you will find that the user instructions are on-line. Maybe someone else can clear this up for both of us. The only thing I am not sure of is if you need to add your initial timing to the timing found as explained earlier. URL of this page: HTML Link: Print this page. You would then read the amount of timing marked off in degrees around the outside of the knob and that is your total timing at this rpm. 3551a Automobile Accessories manuals and instructions online. They way I understand it, you can set your rpm anywhere you wish and "dial back" the timing mark to zero using the knob on the timing light (by "dial back", I mean watching the timing mark on balancer while your engine is running and adjusting the knob to bring back the timing mark to zero degrees). Although I don't own one and have never used one, these devices are very useful for discovering the amount of timing your engine has at any given rpm.
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