Christoph wrote:
First find out what ratio diff is in the box by counting the number of teeth on the crownwheel and dividing it by the number of teeth on the pinion. If it isnt 3.44 you can simply buy a new crownwheel and pinion with the 3.44 ratio. The crownwheel is bolted onto the diff cage with 6 bolts so its easy enough to replace. Remember to change the pinion in the gearbox aswell as they are a matched set.
Whilst ideal to get a "matched set" I thought you could probably get away with interchanging pinions as they are both straight cut gears. With a helical diff ala holden and ford, lapping in would be required, but, in this case, often where beggars can't be choosers, could you get away with meshing gears from different boxes so long as they were both in good condition?
T
hey probably have "standard" pinions (same teeth number across all gearboxes?) and just vary the crown wheel teeth number to give different ratios????