mk4 4motion engine into vr6?????

[johnODB2vr 1]

just wonderng, wot the pros and cons are with putting a mk4 4motion engine int a vr6? like could you just bolt it in or not?

does anyone kno?

[mattp1983 0]

You have to change over the rear engine mount bracket with yours, you can bolt your gearbox straight up, using your clutch and flywheel.

The wiring would be a mission, and there isnt too much power advantage, would probably say it was worth it if you were putting R32 lump in there, same conversion principles, just more power out of the box.

Think you swap over your coolant housing flange as well so you can keep your sensors.

[johnODB2vr 1]

so whats so different with the wireing?

[UnitedMotorsport 55]

The managment is completely different. Its ME7 based, so you need to add a 'fly by wire' pedal. The loom from the MK4 based car doesnt plug straight into that of the MK3 so cutting and joining is required. Also there is other things to overcome, like if you use a standard ECU, you NEED to fit the cats and the post cat lambda sensors, the Secondary air pump and all the stuff that goes with it, and then we have the immobilizer which requires the clock cluster and key from the same car the ECU came from. ALL of this can be sorted with a flashload into the ECU.

[johnODB2vr 1]

can you not use the cable set-up from the vr throtle bodie?

[UnitedMotorsport 55]

Its not as simple as 'just use a cable throttle body' Its a whole different type of management.

If your thinking of using the VR6 management on the 24v, this CAN work, but the work needed to make it work, out weighs the effort in changing the loom to make the correct ECU work.

[johnODB2vr 1]

so its simply not worth going thru all the effort to do, concidering all that money, by the tim u spend it on the vr lump its prob got mre power?

would you deffinatley need the key and egnition barrel for an engine chang,

as the engine does have the loom?

[UnitedMotorsport 55]

Its worth doing as the engine will yield more power than a 12v. Youll have to spend £1000's to get the power from a 12v that a 24v will produce in standard form.

As I said above, all the stuff you dont need, ie IMMOBILIZER, secondary air injection, and post cat lambda probes can all be removed from the ECU by means of a flashload.

[johnODB2vr 1]

what kinda money you looking at to do the 24v swap?

coz a m8 has offerd me the engine, just the engine, loom and throtle boddie, minus the intake manifold.........

[UnitedMotorsport 55]

The ECU modifications we can do. the physical fitting of the engine, you'll have to contact a specialist that does engine conversions.

[johnODB2vr 1]

rite ok, just found out it dosent hav a key, and i supose the engine mount, that needs moving place is a simpleish job, or will it foul any other compnent?

also what about the air-con? as i still hav it.

cheers j

[Phat VR6 3]

Can't you use a stand alone ECU and then get rid of key ect? Make new loom and throttle body?

[UnitedMotorsport 55]

Sure, but itll cost alot more, half of the controls and sensors that make the engine run so well cant be used by standalone, but it is absolutely an option.