Bonzo's progress

[big_wasa]

Westfield used to sell a plenum that would fit the Tb and clear the bonnet. It was thought to be a peugeot part.

[Bonzo]

You are spot on there Big Wasa

My 1.8 Zetec engine was indeed a 115ps one from a 1992 Mk5 Escort Ghia .

Yes I am hoping to get it up & running in it's standard form, complete with the original EEC 1V management

I have both Megasqirt & megajolt here but at the moment I just want to get the Roadster running as easily as possible.

My Vauxhall Red top engine is still calling to me .... I will save all the upgrading for a later date

Been scouring the breakers for ages for the 130ps set up .... You never know one may turn up at some point

[twinturbo]

Ask on the XROC forum, somone may have the bits..

TT

[Bonzo]

Thanks for that Rob

I'll fire the engine up as standard & have a little tinker

Have read on some forum's, that fitting a 2 litre throttle body & cams, will get the 115ps engine running at 130ps !!??

Don't know if there is any truth in that .... I guess the 115ps ECU may object to those changes

Hope to be starting on the engine wiring in the next week or so, sure i'll be bending your ear about the few wires from the ECU, that do not go directly to the engine harness

[twinturbo]

If your running closed loop lambda control then th ECU should manage to keep the fueling in trim.

TT

[big_wasa]

I wouldnt worry to much about the 130 manifold. The ports are bigger but the casting is rough.

Once running on the standard ecu you wont want to bother with the Ms.

[alga]

Originally Posted by twinturbo

If your running closed loop lambda control then th ECU should manage to keep the fueling in trim.

That should take care of idle and cruising speeds, but AFAIK the ECUs break out of closed loop mode once the throttle is more than halfway open.

[Bonzo]

Originally Posted by twinturbo

If your running closed loop lambda control then th ECU should manage to keep the fueling in trim.

TT

I was with you right up to the bit where you said the " Closed loop lambda control " bit

Guessing that this is a standard function to the OEM's lambda sensor & ecu ??

Albert

That part of the engine management is still a mystery to me at the moment !!

When I get to the engine running side of things, i'll get my " Going back to school " head on

__________________________________________________ _____________

Had a good trip to the breakers yesterday.

Managed to find the correct 1.8/2.0 litre, plastic inlet manifold, as was said, a fair bit of size difference to the inlets.
Also collected 1.8 & 2.0 litre throttle bodys + a 2.0 litre injector rail, complete with injectors.

Junior went arround & collected me a good assortment of steering knuckles for my steering shaft mod.

Ohhh & a replacement drivers seat for my eldest's Escort van .

The final tally was £20 for the whole lot, well pleased with that as £10 of that was for the seat

MOT for my Jeep tomorrow, I guess that will curtail my build progress for a few days

[alga]

It's really simple, Ronnie. You're right, it's a function of a stock ECU with a lambda sensor. Most aftermarket ECUs do this as well. Closed Loop is when the ECU adjusts fuelling in a feedback loop: too much unburnt oxygen in the exhaust -- increase fuel, too little -- decrease fuel. This way the engine operates very close to the ideal stoichiometric air/fuel ratio by constantly oscillating around it.