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| RSWEPN |
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Hey
Just wondering if the ECU controls the dwell or the coils/built in ignitors control it on the xr6t. Cheers |
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| ebs_4l |
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my thoughts are that the ECU will do the dwell control... most COP type coils need external dwell control. id say around 2.5ms
_________________ EB 4L, 8.4:1, R154, GT4202r, 4in exhaust, Greenslade Engineering exhaust manifold, plenum chamber, 90mm throttle, Garrett W2A cooler, Surecam custom, autronic SM4, Bosch 120lb, Crane HI-6, LX-92, LM-1, Turbosmart Reg, 2x bosch 044, turbosmart 48 gate. 470kw+ @ 18PSI |
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| ebs_4l |
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i had a look at ba coils today, they have only two wires, which leads me to beleive the ecu has built in ignitor and does dwell control
_________________ EB 4L, 8.4:1, R154, GT4202r, 4in exhaust, Greenslade Engineering exhaust manifold, plenum chamber, 90mm throttle, Garrett W2A cooler, Surecam custom, autronic SM4, Bosch 120lb, Crane HI-6, LX-92, LM-1, Turbosmart Reg, 2x bosch 044, turbosmart 48 gate. 470kw+ @ 18PSI |
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| fnp |
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Age: 39 Posts: 4401 Joined: 25th Mar 2005 Ride: BA XT, BA XR6T, ED Ghia 5.0 Location: Perth |
Forgive my stupidity, but what's dwell control and what does it do?
_________________ What's the difference between a Holden and a sheep? It's less embarrasing getting out of the back of a sheep.. |
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| ebs_4l |
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dwell is the time that the primary coil windings are earthed to charge the coil, when the primary coil earth is disconnected the magnetic field collapses and forms a high voltage buildup in the secondary windings...
_________________ EB 4L, 8.4:1, R154, GT4202r, 4in exhaust, Greenslade Engineering exhaust manifold, plenum chamber, 90mm throttle, Garrett W2A cooler, Surecam custom, autronic SM4, Bosch 120lb, Crane HI-6, LX-92, LM-1, Turbosmart Reg, 2x bosch 044, turbosmart 48 gate. 470kw+ @ 18PSI |
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| RSWEPN |
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thanks ebs_4l, simon from nizpro replied on the nizpro forums and confirmed it aswell
now i dont need to buy the autronic CDI and can just run the sm4
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| Dansedgli |
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So does that mean the coils have built in ignitors?
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| ebs_4l |
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i dont beleive they do, i tink the ford ecu has the ignitors... otherwise they would be 3 wire coils. I could be wrong though
_________________ EB 4L, 8.4:1, R154, GT4202r, 4in exhaust, Greenslade Engineering exhaust manifold, plenum chamber, 90mm throttle, Garrett W2A cooler, Surecam custom, autronic SM4, Bosch 120lb, Crane HI-6, LX-92, LM-1, Turbosmart Reg, 2x bosch 044, turbosmart 48 gate. 470kw+ @ 18PSI |
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| Dansedgli |
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Do you know if there is any truth to this:
{USERNAME} wrote: How to determine if you have Coil On Plug or Coil On Plug with Internal Coil Igniter
Coil On Plug without an Internal Coil Igniter will have a resistance across two of the pins on the connector of between approximately 0.5 Ohms and 1.0 Ohm. Whereas Coil On Plug with Internal Coil Igniter will not have such a low resistance between any two pins on the coil connector. |
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| ebs_4l |
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that sounds right.. since you will not have a direct connection to the coil primary circuit from the coil pins. you will see about 1.2k ohms and the other reading will be anything above this, i think the ones on the honda outbaord engine i was playing with the other day were 1.2k and 5k
with no ignitor you will see primary coil resistance of just a few ohms, .5-3ohms also, most built in ignitor coils will have 3 wires, - + and trigger, whereas no ingitor will just have + and switching ground pulse
_________________ EB 4L, 8.4:1, R154, GT4202r, 4in exhaust, Greenslade Engineering exhaust manifold, plenum chamber, 90mm throttle, Garrett W2A cooler, Surecam custom, autronic SM4, Bosch 120lb, Crane HI-6, LX-92, LM-1, Turbosmart Reg, 2x bosch 044, turbosmart 48 gate. 470kw+ @ 18PSI |
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| Dansedgli |
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Thanks, Ill test them tonight if I remember.
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