jmcpower Posted December 25, 2018 Report Share Posted December 25, 2018 Hi everyone , I would like to ask if a reluctance type sensor , two pin wiring plug will be good for my high rpm turbo 4 cylinder application. Max rpm will be 9800, I am using the Link Thunder ECU with full dequential staged modeled injection and coil per cylinder (AEM 30-2853 inductive smart coil). The motor is a Lancia Delta Integrale 4 cylinder 2.0l with the cam sensor fitted on the distributor which will be now used only as a cam reference case holding the cam sensor as shown on the pictures below. It has two reference points and i will grind off one of them so i can use the following tuning specs on Trigger 2 : cam Pulse 1X For Trigger 1 crank sensor i will be using a magnetic reluctor sensor with a 60-2 trigger wheel . Same as used in the past for Electromotive Tec3r ecu. I am aware of the synchronization of the two trigger sensors needed by Link thunder ecu and this is taken into account . My question is if this type of cam sensor will be good for a high rev application 4 cyl engine? Thanks in advance , Mike. Quote Link to comment Share on other sites More sharing options...
Adamw Posted December 25, 2018 Report Share Posted December 25, 2018 Yes that will be fine, the cam sensor is not very critical with a missing tooth crank wheel. Just make sure the cam tooth you keep passes the sensor well away from when the missing teeth on the crank pass the crank sensor. Quote Link to comment Share on other sites More sharing options...
jmcpower Posted December 25, 2018 Author Report Share Posted December 25, 2018 Thanks Adam , Do you by any chance have a duel table for the AEM 30-2853 inductive smart coil ? Thanks in advance , Mike. Quote Link to comment Share on other sites More sharing options...
Stevieturbo Posted December 25, 2018 Report Share Posted December 25, 2018 What's a duel table ? For dwell, it's entirely up to you, nominally they will say 2.5ms is enough time to give the quote spark energy they claim. Some will charge them for longer than this though. Whether you need more charge time is entirely up to you and your setup. It's been a while since I tested, but from memory I think they saturate around 5-6ms. Depending on engine rpm though, you may or may not have that sort of charge time available anyway. Quote Link to comment Share on other sites More sharing options...
jmcpower Posted December 26, 2018 Author Report Share Posted December 26, 2018 Hi Steve, Sorry I meant to write Dwell...(: Below are the specs for the Ignition coils that i will be using . I have filled up the Dwell table with a max 8.5ms and no more than 40% duty cycle at any rpm /voltage range with my Coil per plug set up. Between 1000 and 2000 rpm where the engine will spent more time (idle) I have reduced the Dwell time to 4 ms so to keep the coils slightly cooler and increase reliability. Will spark duration on Ignition Main correspond to Arc Duration: 2.9mS +/- 10% as seen below ? Also having the coils 1 inch close to the fuel injectors , could this cause any kind of interference ? Thanks in advance for all your help!! Mike. Output (no load): 40kV minimum Output (50pF load): 40kV +/- 10% Output Energy: 103 mJ +/- 7% Peak Secondary Current: 102 mA +/- 10% Arc Duration: 2.9mS +/- 10% Turns Ratio 71:1 Maximum Current: 19 Amps Maximum Battery Voltage: 17 Volts Base Dwell: 3.0 mS Max Continuous Dwell: 9 mS but don’t exceed 40% duty cycle Max Intermittent Dwell: 80% duty cycle, 5 seconds maximum Mating Connector: Packard/Delphi 12162825 “Pull to Seat” Mating Contacts: Packard/Delphi 12124075 “Pull to Seat” High Tension Wire Terminal: HEI “spark plug top” Styl Quote Link to comment Share on other sites More sharing options...
Adamw Posted December 27, 2018 Report Share Posted December 27, 2018 8 hours ago, jmcpower said: I have filled up the Dwell table with a max 8.5ms and no more than 40% duty cycle at any rpm /voltage range with my Coil per plug set up. You will not need anything like that. 2.0 ramping up to 3.0ms at peak cylinder pressure is about all you will need for most applications. Only give it more if you find a misfire at high cylinder pressures. Anything more and the coils are just going to run hotter and die faster. These coils were originally designed to replace CDI on a 2 stroke Mercury outboard so they are designed specifically to put out high energy with a short charge time. They will certainly put out more energy with higher dwells if needed but one of my customers has them on a 300HP/cyl 70psi methanol engine and only needs 4.5ms. They actually put out a fairly hefty spark even at 2.0ms. 8 hours ago, jmcpower said: Will spark duration on Ignition Main correspond to Arc Duration: 2.9mS +/- 10% as seen below ? This setting only really comes into play on a V8 with a distributor where there is a lack of cycle time to charge and discharge the coil 8 times per cycle. If the ECU knows the spark duration it can automatically shorten dwell time at high RPM if it is not going to fit into the available cycle time. Put 2.0ms in there and that will never come into play in your case anyway. 8 hours ago, jmcpower said: Also having the coils 1 inch close to the fuel injectors , could this cause any kind of interference ? Highly unlikely, I dont expect any issues here. Quote Link to comment Share on other sites More sharing options...
jmcpower Posted December 27, 2018 Author Report Share Posted December 27, 2018 Thanks Adam for all the help , Best regards, mike. Quote Link to comment Share on other sites More sharing options...
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