hi, im doing the xr3i to efi turbo conversion using the fiesta ofab ecu and loom, however the turbo engine was mfi and doesnt have a hole for crankshaft position sensor.
has anyone got any ideas on what to do?
thanks

 

think you can use a 1800 cvh bottom pully (off the sierra) which as got a triger wheel on it then make i braket to hold the sensor on

 

do i have to use the sierra sensor or xr3i?
and can i just get a 36-1 TRIGGER WHEEL

 

also do you have to have a set distance between sensor and trigger wheel?

 

You need to use a trigger pattern the same as that on the engine from which the ecu came, it also has to be in the correct place as well, ie the missing tooth must be exactly where it needs to be not just somewhere near, though if having mapped this can be overcome.
The actual sensor does not matter(where it comes from) so long as correct type and fits ok, they can be wildly out distance wise but aim for around 30 thou, or 0.75mm, will be fine.
tabetha

 

ok thanks.