Hello.

Put this in General discussion but it should probably be here or in technical Q&A. (mods feel free to delete the postings in the wrong place).

1. Anybody know for sure if there is any difference between the MT75 4x4 boxes in 2 litre DOHC XR4x4s and 4x4 cossies (escort or sierra)? I've heard rumours of tweaks (oil flow, third gear synchro) but is this between different models, or rather, development over time accross all models?

I have both boxes sitting here (cossie and dohc 4be) and they look identical. Is there any way to tell them apart or are they just the same?


2. Is there any way to fit a hydraulic clutch to the 4x4 MT75? I know somebody who built a 4x4 V8 Dax Rush who said he used a mondeo concentric clutch slave and it 'bolted right in' as far as he could remember. But in both my boxes there is nowhere to bolt anything in the bellhousing. Perhaps his model had some holes tapped in the bit that screws in round the input shaft?? Or are all 4x4s up to latest scort cable clutch? Someone at Interford reckoned someone here has fitted a hydraulic to the MT75.


3. Also, i have front props from two V6 4x4s which are the solid shaft type. The DOHC front prop is fat and tubular. Any idea what sort of prop a 4x4 cossie would have had? Anybody know if the tubular is stronger/torsionally stiffer than the solid shaft, or vice versa??


4. Something I've wanted to put to rest for ages, and i bet you guys know. Granada and Sierra driveshafts - are they the same length?? I believe grandad track is quoted as a tiny bit wider than sierra, but is this just taken up in the float of the CVs? What about regarding 4x4 grannies and sierras?


5. Oh and finally - 4x4 MT75 gearchange... A friend of mine has a rather nice XR4x4 with the 24v lump. He takes an age to change gear and complains he really can't do it quicker without upseting his box. Is he a ponce taking mechanical sympathy to new extremes or is the box very slow to change. Is it perhaps a wear issue? My cossie box is brand new (never been used despite being about 15 years old) so perhaps i'll be OK?


Right, that'll do. Thanks for reading this and any help would be appreciated.

By the way...In case anybody is wondering, I'm building a 4x4 seven type car (inspired by the Dax Rush 4x4) but my own design. I'm at rolling chassis stage with the chassis, suspension and drivetrain install all done. Next on the list is to panel the chassis and get the engine running (honda V6 - sorry guys but it's ally =)).

Thanks

Liam

 

Good luck on building your own car, by your own design, quite an achievement

Interested in the answers to some of your questions, quietly waiting for answers from people who know...

 

Well i've found the hydraulic clutch conversion at Reylands. £875. Oh dear. Mondeo bits and some fabrication methinks. Anyone got a mondeo concentric clutch cylinder for sale?

Liam

 

What are the benefits of a hydraulic clutch?

 

Cable routing, release arm clearance and pedal box fabrication in my installation, which is tighter than a bikini on Pavarotti

Liam