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MS rookie question (81 CAS and coil on plug?)


Kennysgreen280zt

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Wouldn't an 83 CAS dizzy work if you covered one hole so you would have a 6-1 wheel? I'm not familiar with the 81 cas internals to know if you could do the same thing. Just cover the slot that would line up with #1 TDC, or the one prior to #1. It would be easy to put a small piece of copper tape over the slot. Should hold up great.

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Wouldn't an 83 CAS dizzy work if you covered one hole so you would have a 6-1 wheel? I'm not familiar with the 81 cas internals to know if you could do the same thing. Just cover the slot that would line up with #1 TDC, or the one prior to #1. It would be easy to put a small piece of copper tape over the slot. Should hold up great.

 

someone, maybe it was rontyler, posted on how to do that by drilling one on the z31 trigger wheel.

Mario

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Wouldn't an 83 CAS dizzy work if you covered one hole so you would have a 6-1 wheel? I'm not familiar with the 81 cas internals to know if you could do the same thing. Just cover the slot that would line up with #1 TDC, or the one prior to #1. It would be easy to put a small piece of copper tape over the slot. Should hold up great.

 

A 6-1 crank wheel would work. But with a wheel that spins at cam speed, you need a tooth to trigger each cylinder. The minimum number of teeth you could use would be a 12-1 wheel. I suppose punching a hole in between each tooth could work (except one) but you would need to be careful with the alignment.

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The few number of teeth, the more interpolation the ECU needs to do between trigger pulses. The CAS is a three magnet wheel, correct? I'm fairly certain that the MS cannot use a three oulse per revolution wheel.

 

Another problem with the CAS crank pully is that the magnet tend to fly off when they get old. Save yourself a lot of trouble and use a 36-1 wheel. Yes, there is some fabrication involved, but one you go MS, there is no going back to stock (easily anyway). DIYAutotune has the trigger wheels and sensors.

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A 6-1 crank wheel would work. But with a wheel that spins at cam speed, you need a tooth to trigger each cylinder. The minimum number of teeth you could use would be a 12-1 wheel. I suppose punching a hole in between each tooth could work (except one) but you would need to be careful with the alignment.

 

Yeah, your right.

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The few number of teeth, the more interpolation the ECU needs to do between trigger pulses. The CAS is a three magnet wheel, correct? I'm fairly certain that the MS cannot use a three oulse per revolution wheel.

 

Another problem with the CAS crank pully is that the magnet tend to fly off when they get old. Save yourself a lot of trouble and use a 36-1 wheel. Yes, there is some fabrication involved, but one you go MS, there is no going back to stock (easily anyway). DIYAutotune has the trigger wheels and sensors.

 

 

I just wanted to correct something here. We don't actually have the crank sensors just yet, we are working on something that is easy to mount and set up. Our trigger wheels have worked with pretty much every sensor we have tested so far though.

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"someone, maybe it was rontyler, posted on how to do that by drilling one on the z31 trigger wheel."

 

That works for Wolf and not MS. Wolf looks for a sync pulse to identify #1.

 

Wolf uses a 4 tooth wheel for 6 cylinder applications. Three placed 120 deg appart, with the last tooth placed next to the TDC tooth so the ECU knows where TDC is.

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I just wanted to correct something here. We don't actually have the crank sensors just yet, we are working on something that is easy to mount and set up. Our trigger wheels have worked with pretty much every sensor we have tested so far though.

 

The Ford VR sensor used in EDIS systems has worked well for me in the past.

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Wolf uses a 4 tooth wheel for 6 cylinder applications. Three placed 120 deg appart, with the last tooth placed next to the TDC tooth so the ECU knows where TDC is.

 

Hmmm, according to my Wolf V500 configuration file, it is setup for 6 teeth and looks for a pulse (the "7th" tooth) to determine TDC.

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Hmmm, according to my Wolf V500 configuration file, it is setup for 6 teeth and looks for a pulse (the "7th" tooth) to determine TDC.

 

I haven't installed a v500 yet, but 3.0, and 4.0 Wolf units use a 3+1 type wheel for 6 cylinders.

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