KSira

I'd like to use my brand new Spec Stage three for the turbo motor, on my soon to be S2 Turbo motor. Is this possible?

931guru

S2 clutch is different diameter.

KSira

Is it possible to remove the complete 951 flywheel, clutch and PP, and use on the S2 engine?

Voith

Should be imo.

Duke

Yes, along with the 951 bell housing.

coilbox

If S2 crank´s are used on turbo engines with turbo clutches......yes its compatible, but the whole assembly.

Voith

Bell housings are not necessarily different. My 85/2 NA had the exact same bellhousing as 952 S I parted.

Probably starter engage gear was bigger in diameter.

North Coast Cab

The clutch itself should be fine. The 951 has a slightly different fork and bellhousing.
The S2 has 1/2 the flywheel teeth of the NA, not sure about the 951, so check that as well.

kghaas

S2 Turbo engine in Norway? You have to give us some more info on this

JustinL

Think about electronics too. The S2 uses a different sensor setup for the flywheel. 60-2 toothed wheel on the S2 flywheel and the turbo counts the starter ring teeth and has the reference sensor.

Crackership

I'm under the impression that, if you want to use a 951 DME and KLR, you have to use the 951 bellhousing and clutch assembly in order to accommodate the speed and reference sensors.

67King

THis. Not sure why everyone is overlooking this. It may be possible to drill and tap 60 holes in the turbo flywheel and install some set screws, but it is most definately note a bolt on. And as stated, the diameters are different, so the flywheel, cluth, and pressure plate are all a set.

KSira

No worries guys, I'll be using a Vipec V44 stand alone EMS

Fredrik H

Yes. Thats what I have, and 951 bellhousing, on the 3.1L.