Jacky Fung Posted March 24, 2020 Report Share Posted March 24, 2020 Dear all, I do have experience in tuning B-Series Civic and COP. Now I have a project on a Cosworth Escort RS. I have a trigger problem of it. I'm using stock distributor and crank sensor as Trig 1 and Trig 2. And I'm messed up with the setting. Do I still need adjust trigger offset and timing gun to adjust offset even have a crank sensor? I can start engine on around 110 degree, but it seems not the correct offset. Would you give me some hints? and I cannot find any video on timing w/ a cosworth. Thanks for your kindly help! Jacky Quote Link to comment Share on other sites More sharing options...
bsh Posted March 24, 2020 Report Share Posted March 24, 2020 If it is the Weber-Marelli trigger with the 4 tooth on crank, you use the "RS500"-trigger in software. Timing should be pretty spot on. Quote Link to comment Share on other sites More sharing options...
Richard Hill Posted March 24, 2020 Report Share Posted March 24, 2020 As bsh mentioned above, the RS500 trigger pattern will work fine with stock distributor/crank sensor setup. The important thing is to make sure the TDC mark on the dizzy lines up (roughly) with the rotor arm at #1 TDC on the firing stroke, as there are 2 teeth on the distributor trigger and the ECU will have problems with the phase otherwise. If the distributor has never been removed then the phase sensor connector should be closeish to the cam belt (Stock position). standard offset should work but always worth checking with a strobe light. What ECU are you using? If you have triggerscope, then post the llg file here. If your are COP then the rotor/HT angles won't matter (but the phase position kind of does), if you are using original ignition then more care will need to be taken over the firing order and relative positions of the rotor > HT leads. HTH, RIchard. Quote Link to comment Share on other sites More sharing options...
Jacky Fung Posted March 25, 2020 Author Report Share Posted March 25, 2020 Thanks for you guys information. I'm using Storm Attached w/ some setting and scope diagram for your reference. I cannot start at 0 degree, I can start at 200 but seems miss 1 of the cylider. Jacky Sorry the pic order was messed.... Quote Link to comment Share on other sites More sharing options...
Adamw Posted March 25, 2020 Report Share Posted March 25, 2020 The distributor sensor is wired incorrect polarity, you need to swap the +/- wires. Im not sure if that would be enough to cause your offset to be wrong but start by fixing that first. Quote Link to comment Share on other sites More sharing options...
Jacky Fung Posted March 25, 2020 Author Report Share Posted March 25, 2020 Oh. thx for your information. I will check tmr and get back to you. Quote Link to comment Share on other sites More sharing options...
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