dai burnsy

how can i tell what gearbox it is by looking at it out of the car is there any diference betwwen a 2.0 xr4x4 a 2.8/2.9 xr4x4 or a cosworth ?from looking at them ,part numbers possibly?

dai burnsy

anyone tell me anything about the differance the boxes please

Graceland

2.9 bell housing is taller at the front

2.0 and cosworth are the same case


internals on the cosworth are different in so much that 5th gear layshaft has an oil flicker/spinner in a cosworth box.

I've used both gearboxes in my cosworth with no problems.

dai burnsy

well the one in my car seems to be lower ratio in 5th it will only pull 130 odd at 7000rpm in 5th been told the 2.0 one is lower ratio had a box i was keeping as spare and its the same i have changed the rear diff anyone heard of front diff problems?

dai burnsy

anyone know about ant gear ratio difference between them ?
and will a xr4x4 2.8/2.9 box fit my cosworth?

dojj

iTrader: (3)

the dohc one bolts directly to the cossie enigne
ratios are the same inside, it's the diffs that are differnt front and rear on the dohc, they are 3.92:1 rather than 3.62:1 like in everything else

the V6 box has a longer input shaft than the dohc one and the bolt holes in the top are different
otherwise it's all good

dai burnsy

so i still none the wiser to my problem does any one think it could be the front diff as i have changed the rear for a car i drove so i know that right bought the gearbox and seen the cosworth it came out of cant see me having two short ratio boxes and neither have a seperate bell housing.

xr4x4rs

iTrader: (5)

another easier way to tell

2.8 and 2.9 boxes the cltuch arm is on the drivers side

on dohc and cosworth its on the passenger side

easiset way o tell the boxes apart

the ratios are the same in all the boxes i was told

id go with dojj sounds like you have teh dohc diffs in there but still they pull up over 150

best thing to do is change both diffs again for cosworth 3.6 items, 2.9 are the same

dojj

iTrader: (3)

if you've changed the rear diff you've fooked the viscous coupling in the transfer box mate if you've used the wrong ratios
you need to have matched diffs front and rear

PAUL S

iTrader: (8)

The 2 litre version is not a direct swap - the case physically fits but you need to change the pivot pin that holds the clutch release arm inside the bell housing- its longer on the cosworth version - easy to do and only a couple of quid from Ford - just tap out the old one and tap in the new one otherwise the clutch arm does not sit properly against the clutch

You need to use the cosworth release arm as the 2 litre one is to shallow -£20 from Ford new

Also the centre shaft where the clutch release bearing sits is 10mm longer on the cosworth version - it will work but the bearing will be very close to the end of the shaft when the clutch is fully in