Daggi wrote: ↑
Sun Mar 17, 2019 7:23 pm
Hi, Thanks for the reply.
It is a 24 tooth engine speed with 1 vr sensor. And 1 tooth with 2 vr sensors.
Running on the cam.
OK, so your 24/2 is different from others in this thread, though still common. In your situation, you have two general options; the simplest (in function) being to only
use the 24T wheel and grind one tooth off, making it a 24-1 wheel at cam speed
. Using Missing Tooth (Cam) decoder, this supports all of the modes from batch fuel/waste-spark to full sequential fuel and spark. The /2 sensors would be grounded.
The other option is to remove or otherwise disable one of the two TDC pickups (G1 or G2) for the 1-tooth wheel. Common methods are grounding one of the two sensor signal wires to G1 or engine ground, grounding through a large resistor, or I've seen one case of destroying one of the two sensors by grinding it down. Disabling one of the pickups would result in a single pulse per-cycle, and would run as a Dual Wheel 12/1 (12T wheel none missing per crank
rev and 1 cycle pulse, per-cycle) at crankshaft speed
. Usually this method is tried first even though signal interference can sometimes be a problem, as the first method (24-1 cam) is always a second option.
There are other modes it could be run in, but they are limiting or do not offer any advantages, e.g., 12-1 or 12-1/1.