Running an M54 3.0 on M52 2.8 loom, ecu etc (with a re-map)

[jaistanley]

Would this be possible?

It would in effect allow the 3.0 litres to be installed using a mechanical throttle and compatible with the E30 wiring.

Obviously the ecu would need to be mapped to suit and you cant expect things like VANOS timing to be spot on.

I guess the crank, knock, cam and vanos sensors would have to be very similar to the M52.

Just wondering really...

Jai

[stuartgallafant]

to be honest, i dont think its possible. the design of the intake manifold is based around not having a throttle linkage, therefore, everything is quite hidden. and VANOS timing is out, then whats the point of having it?

you'd be better off involving either S50 engines

[DanThe]

If it was me I would just build the crank into an iron blocked M50.

Im going to have to keep an eye out for one of these

[ste]

As am I...

[jaistanley]

I've solved (well someone has) one of the problems (for what it's worth)..

http://www.turnermotorsport.com/html/de ... TEN9990850

My reasoning behind the idea was BMW's propensity for keeping control strategies and sensors very similar from engine to engine, evolution rather than revolution.

Soon enough these engines are going to become cheap and hundreds of people are going to be asking 'how do I fit an M54B30, I have a draper toolkit and my mate used to work for kwikfit'.

Just thought I'd get the jump on 'em

Jai

[ste]

It's still a non-starter in my book. You need the proper M54 ECU and all the horrible drive by wire that goes with it to get the best out of the engine. If you look at the TIS entry for the M54 it's actually quite an evolution over the M52. As a very basic starting point, the M52 loom certainly isn't going to control the dual vanos.

The Turner M50 onto M54 throttle plate is for a race car that will be running standalone management and locked (i.e. no) vanos.

As Danthe says - you're better off stroking the M52 with the M54b30 crank if you're desperate for a 3.0 single throttle engine.

[stuartgallafant]

fly-by-wire is one of them god-sent inventions... as long as it working, its an absolutely beautiful piece of briliiance

[jaistanley]

Except in Citroen C2's and middle aged Golf 1.8t's, (the car's that aren't BMW and had fbw that i've driven). Those old ones have such slow servos on the throttle that the f*cker keeps accelerating mid bend when you lift off, then slows when you're panicking. Only a tiny lag but when you're driving it's noticeable because your inner ear feeds back data so fast.

I agree though, FBW is fantastic from a controls perspective. You can throttle the engine for traction control based on load and wheel slip, but still vary the throttle regardless of the pedal input. Trés cool. You can also always match the throttle opening to the drivers throttle position in relation to engine speed, IE always have the throttle plate in the right position for max torque/lowest throttling losses dependant on how hard the driver wants to accelerate. I'm not desribing it very well but I agree.

Trouble is it's a pain in the bread loaves to install in an old car like ours....

Jai