Barry_GTi

Need a bit of advice on a Scooby box, if anyone has seen one the driveshafts for the front wheels come direct out of the casing, then there is a diff in the box before coming out the output shaft at the rear of the box to go to the rear diff etc......

My question is this........ to convert to 2 wheel drive could I simply not connect the rear output shaft and it will just drive the 2 front shafts direct out the box, like a transaxle? Or do you need some pressure on the rear output shaft? I just don't understand gearboxes and diffs well enough......

Thanks guys

NUTS RuS

iTrader: (35)

Had to lock the centre diff on the scooby last weekend as it broke a rear driveshaft and it had 2 stages to do like that before service.

It made it to service in 2wd mode and we changed the rear shaft okay, but the resulting stress' killed the Quaife dog gearbox on the next stage.

Didn't work too well, and I guess on a standard box it wouldnt survive for too long either.

extra14

Theres a conversion that is done on the vauxhall f28 box to make it 2wd, diference being the diff system.

I recon it will work but (as mentioned above) the load to the front only will kill the bearings, plus the front was not designed to take 100% of the power.



Darren

gearboxman

Drive to front and rear diffs is shared out via a centre diff that is built into the back of your transmission.
This diff has a viscous unit to limit slip, and if you simply didn't connect to the rear output, you would fry the viscous coupling and not get any drive to the front.
As Tony says, you would have to lock the centre diff up.

You could always use a 2WD Subaru box though....

Barry_GTi

If you hadn't guessed this isn't to go in a Subaru, but rather to use a Scooby lump to make a light(600kg) mid engined hatch. My thoughts were the Scooby engine being flat 4 would keep weight nice and low and the layout of the box meaning it would be proper mid engine as apposed to the conversions that use engine/transverse gearbox packages from FWD cars.

Bernie thanks for that I take it you mean that 2wd Subaru boxes use the same layout? And do you happen to know if they will handle 300ish bhp in a lightweight shell???