banaro Posted December 18, 2017 Report Share Posted December 18, 2017 HI, Suit Thunder, Trying to determine the the trigger settings for a GEN1 SBC that has a hall sensor added to the distributor that provides a single pulse per full cycle of the engine, and a reluctor crank trigger for the ignition i/p, the hall reference sensor currently fires between the first and second cylinders in the firing order. ECU fires an MSD single coil ignition. Thanks Quote Link to comment Share on other sites More sharing options...
Adamw Posted December 18, 2017 Report Share Posted December 18, 2017 Can you confirm the number of teeth on the crank trigger? Is it one of those “flying magnet” types with 4 magnets? Quote Link to comment Share on other sites More sharing options...
banaro Posted December 18, 2017 Author Report Share Posted December 18, 2017 Correct, msd flying magnet, with 4 magnets. Hope you can help Converting from and old autronic smc i installed 15 years ago Quote Link to comment Share on other sites More sharing options...
Simon Posted December 18, 2017 Report Share Posted December 18, 2017 You can start with the following the timing will need to be checked and set. Quote Link to comment Share on other sites More sharing options...
banaro Posted December 18, 2017 Author Report Share Posted December 18, 2017 Thanks Simon As i use individual cylinder trims, I need to be sure of cyl 1 position, is cyl 1's crank trigger input just prior to the reference trigger, or just after?, still not sure after looking at the help topics. Quote Link to comment Share on other sites More sharing options...
Simon Posted December 19, 2017 Report Share Posted December 19, 2017 It will be the one after the reference. But to confirm you can set the ECU to direct spark so the coil only fires once in a cycle to then check with the timing light. Quote Link to comment Share on other sites More sharing options...
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