1996 Sierra XR4x4 V6 Doner Car

[Spikehaus]

I have aquired a 1996 Sierra XR4x4 V6 Doner Car with ABS for very few pound notes. Has any one had experience in using this as a Doner Car, and if so how much can be used, and what will I have to aquire from other sources? I am assuming that the rear axles, prop shaft etc can be used, but have concerns on the size on the engine block and gear output.

[racebreed]

i beleive the frontwards prop would foul on the passenger side footwell or the drivers cant remember

[AshG]

you can use all the bits other than the gearbox. a type 9 or mt 75 wont set you back too much

[AshG]

if you want to use the abs i can give instruction but you wont need it to be honest as it will only get on your nerves round a track

[Spikehaus]

Cheers, this is a good point, but being a typical engineer I like the challenge of making things work!, I may regret that statement! guess this can be disabled for track days.

[aerosam]

Originally Posted by AshG

if you want to use the abs i can give instruction but you wont need it to be honest as it will only get on your nerves round a track

No problems just pull the fuse when you go on a track.

I'm trying to build the BMW ABS from my doner as it adds safety for the road and I think it may be required under the new IVA test.

Can't the MTX75 box from the 4x4 be used without the front drive shafts? or will the drive on the side of the box fout the tunnel?

[AshG]

you can send it away and have it adapted to 2wd but it will cost more than a type 9/mt75 although it will be stronger. i did look into it once but decided against it due to cost and keeping things simple. i believe there is also an issue with the input shaft being too long/short that needs to be modified.

[Oscar]

I thought I ought to search before starting a new topic, and hey! it works!

I'm brand new on this forum (lazyness) and wanted to find out a few things.

I've just found an xr4x4 (friend of a friend) and couldn't resist. My main concern has been the issue with the gearbox. Have you managed to sort this out? Which route did you take?

My other worry was whether the front uprights would cause any issues?

Would love some reassurace on these points! Cheers in advance.

[Spikehaus]

Hi Oscar,

Having almost 2 years elaspsed since I raised this thread, I now consider myself an expect on the 4x4 mfi sierra and the best way to shoehorn it into a roadster! If you have a look at the two links below you will see every modification I had to make.

Main Changes:-

4x4 sump needs to be replaced with a standard 2WD pan as the front final drive unit and probs run through th sump.

Close Ratio Gearbox exchange - I used a Capri 280 box (But some models had a pulse speedo drive) Also considering a hydrolic clutch

Bosch K jet fuel lines need to be extended with new braided lines

Alternator will not fit so needs mounting on opposite side.

Front uprights - I think you can use them, just the steel dust plates behind will be required. I but the new Rally Design ones I purchased side by side and they looked identical

Apart from that you get a cheap rear LSD, Cosworth spec parts and calipers!





PS, if you decide agaist using the 4x4 let me know, I wish I kept the old Sierra, but it had no interior.....!

[twinturbo]

The Geometry on the front of the 4x4 is a little different. Not sure if the uprights are actualy much different in geometry though. The Bottom ball joint from teh maxi may not fit though as the 4x4 uses a stub and pinch bolt as opposed to the maxi's threded taper.

I am using a 89 XR4x4 2.9 EFi, no need for all the fule metering stuuff from teh 2.8 MFi

I have an XR4i type 9 gearbox.


What year is your car?

TT