/4 Crankshaft postioning wheel(crankfire ignition), Anyone try this type setup/location??? Options

[Mueller]

I figured someone has tried to locate the wheel on the end of the crank sitting out in front of the fan instead of behind it.

Yea? Nea?

Ideally, it would have to be balanced perfectly (along with the rest of the rotating assembly) and have to be made as light as possible.

This way the sensor could be mounted on a bracket on the outside of the fan housing.

The alt. belt could be a hassle to replace, but if the bracket is designed correctly, it can be removed and replaced without messing up the alignment with the crank wheel sensor.

[DNHunt]

Mike

If you want to run the trigger off the dizzy, make a 70-2 trigger wheel and and use a VR sensor with the EDIS4 module. I toyed with this idea but decided on crankfire. The timing resolution is cut in half with the dizzy wheel and I wasn't sure if the EDIS sensor would work with the tiny teeth. For a one off trigger wheel it was too much money to gamble, but if you were doing a bunch it wouldn't be so bad.

I think the VR sensor, trigger wheel and EDIS modules all work together, so I don't think it would trigger with any other sensor input. You can mess with the size of the wheel but not the 35/1 ratio. I'm not sure of how small the teeth can be but I know one guy did a wheel for the distributor.

This I 'am sure about. The modules and sensors are tough. The cars I got my stuff out of were really trashed and the engine compartments had been open to the weather for a while. I've tested 3 different units off of 3 different totals and all of them work.

My issues are where to try to head. I've pretty well decided that I can't get rid of the wasted spark aspect of the system. I've tried to switch the hot lead to the primary side of the coil and that didn't work, and I'm convinced if I try to switch the ground side I will lose dwell control since the EDIS module uses the flyback from the primary to control dwell. So, I think we're stuck with wasted spark. Originally, I thought I would do COP but I can't find units I know will work and at $100 a pop I don't want to gamble so it's either as design with 2 cylinders per coil or twin plug with 1 coil per.

Dave