Patch Loom?

Small port dizzy has 2 internal VR sensors.

One VR sensor is a 24th wheel which gives the cam position in 15degree incrememnts, which given that the crank spins twice as fast i believe that gives the crank position at 7.5degree increments. because there are no missing teeth (ie the engine doesnt know where the 24th wheel is in relation to the engine) this is not enough to do anything with.

The other internal VR sensor is a single pulse which is a "Reset", you'll have to check but i believe this is setup to pulse at TDC cylinder 1 (or close to). this second input tells the ecu when the engine is at TDC of cylinder 1, then it knows exactly where the crank is and what cylinder is firing next.

Both these sensors combined is enough to run your engine in full sequential mode (you mentioned you have individual coils and ignitors)

but with the smallport dizzy if you went this way you would not be using the distributor part of the dizzy (ie the cap and rotor). the ECU would drive the ignitors directly which in turn fires the coils. So you can either leave the dizzy cap on, or some people make up a blanking plate.

Edited October 12, 20169 yr by ke70dave