Mizka

Hi I'm newby here so be gently. I have a rally spec Fiesta mk3 1,6 cvh with RST Escort gearbox @ the moment.

Is it possible to mount MTX-75 gearbox to CVH engine and what I need to change along with it? Bellhousing seems to be bolt-on, but how about drive shafts, clutch/flywheel and such?

Reason for this is simple, i've been offered a fairly priced MTX-75 dog box from Esc RS2k rally car, which would be so much better for my use.

mozwang

hi there mate i got mk 5 escort that i have put the fiesta rs turbo engine in the efi one i have got the mtx75 box out of 130bhp xr3i zetec. i got that all on the engine but it seems to over fuleing and i dont know if this is down to the crank sensor as you have to use the zetec fly wheel and the bolt holes for the fly wheel are bigger than the cvh ones so you got a little more movement so you have to set it up with were you old one sits.

vonwoodster

Hi Mozwang

I have just converted my CVH powered Westfield SE from Carburettor to EFI, due to strict German environmental laws. Basically I have taken the complete engine, loom and control system from a donor XR2i car. Everything is now installed into position and the engine is running, however it is also running very rich (CO2 = 2.3%) with all sensors connected. The only sensor/component that is is not from the donor car is the fly wheel as the westfield is RWD. Incidentally i had to fettle the sensor in order to reduce the clearance between the fly wheel and sensor to approx 1 mm.
Do you beleive an incorrecty mated / Gapped flywheel and sensor would make the engine run rich?
Any advice would be welcomed
Cheers
Paul

mozwang

no i dont think it would be the fly wheel sensor mate as it would probley not run if it starts its probley ok the loom you took out the xr2i are you useing the ecu IE an ofab ecu or the ofac ecu as i found out the loom is matched to the ecu its easy to make the ofac ecu loom run the ofab ecu you have to change a few pins on the ecu end and lose 1 wire out of the ignition amplifier witch runs the injectiors thats what i had to do to mine because it was runing really rich and smokeing bad.

vonwoodster

Mozwang, thanks for the input. Ive used the original loom and EEC so I'm not expecting it to be a wiring configuration issue. Ive got the car booked with the local ford specialist who still has the old Star Tester. I'll keep you posted on the results.

Cheers
Paul