AstoN_B

iTrader: (1)

Just a quick one really since i've read different things.

I've got an engine issue with the 3i, in that it's eaten a valve in an epic fashion.

It's an EFi so it's got all the original EFi loom etc and i was considering zetec conversion since the EFi engines arent that easy to find these days tbh. A mk5 escort uses EEC-IV too but with a different ECU plugged into it, does this mean that the plug for ECU on the loom will be the same?

Basically i want to bolt the engine in, plug the zetec ECU into the car where it lives under the stereo and change a few pins round at the plug which connects the car to the 'engine loom' inside the bay. Is this not the easiest way?

This guide looks like they swap entire front end looms, but mine is part of the full car loom and i dont want to start cutting it out to put another one in if it's basically the same. Unless this is easy to do without removing the dash etc?

It all seems very similar; xr3i EFi is same engine and basic loom as 2i 8v, and that should be pretty similar to the 2i 16v which should be almost identical to the early escort 16v's. I just didnt want to have to touch the original loom since i can cut up and change the engine bit of the new loom.

It should be easier since it's already EFi but it's looking like it'd be easier to do an MFi at this moment in time, since i could just drop a full loom in and put the right power to the ecu.

Help

AstoN_B

iTrader: (1)

Anyone shed any light?

AstoN_B

iTrader: (1)

Sunday bump. Wont know if my engine is saveable for about a week yet.

AstoN_B

iTrader: (1)

Good job no one answered, at all. If my next cvh breaks i'll be re bumping this thread. I may put the word cosworth here n there to keep people keen.

combivan

hi you can just run the zetec on original loom and ecu. just swap the sensors from the cvh to the zetec.my van is running like this on a 1.8 for a few years now.

AstoN_B

iTrader: (1)

Doesn't it fuel wrong or anything? I would have thought so since the map on the EFi escort is for a 1.6 8v? Not a 1.8 16v?

Obviously it'd be ideal to swap then get it chipped to sort that, but for the money the newer ecu would do a far better job IMO.

Any pics of your setup?

combivan

the 3i ecu has nothing to tell it how much fuel it needs sensor wise. that's why they have adjustable fuel reg and co pot.

AstoN_B

iTrader: (1)

except for the map sensor, throttle position sensor and air temp sensor.

My understanding is that the pressure reg and CO pot are for fine tuning since the car doesnt have the ability to measure the burnt mixture like the more modern ecu's.

Having had an engine failure on something which was fueling correctly, i wouldnt like to take any chances on a fresh engine.

combivan

[QUOTE=AstoN_B;5600547]except for the map sensor, throttle position sensor and air temp sensor.

they tell the edis module when and how much to change the timing.
tps also gives length of time to open injectors.

it works for me and several other people i know. your choice end of the day.

AstoN_B

iTrader: (1)

I wasnt saying it wouldnt work. It makes sense that the map sensor and TPS would detect greater intake at less load and inject accordingly. If i went the route of using standard ECU and wiring i'd need to at least get it on a rolling road to get fuelling double checked through the rev and load range.

It's just with the two engines being quite different they will no doubt burn their mixture slightly different.

It'd be interesting to know if the xr2i 8v and 16v looms are the same or not, i assume the 16v has added lambda wiring, and probably CPS. they wouldnt be longer than an hour or so to add into an EFi escort loom to run a 16v fiesta ECU...