Knocking only in 4wd

[T0mmyM]

Ive litterally just put the diff back in this weekend with a new casing! Doh
I can get a second hand diff for £80 but like you say could be money wasted although if its not diff i would have a spare.
Am i right in thinking the diff ratios should be 5:12 front and back? Do they have part numbera on the casing or is it a case of taking it apart and counting teeth?

Thanks for your help much appreshiated

[T0mmyM]

Took anus for a proper drive last night with hubs locked but in 2wd and a mile down the road started to hear a grinding noise, different to the knocking but something defo not right

[dan_2k_uk]

Remove the front prop and try again. If it continues then take the diff back out and check again.

[T0mmyM]

Morning i am still yet to remove front diff as i have had other more important things to get fixed(brakes) but just doing a little more research on diff ratios. Is it possible i could have a 5:12 upfront but a 4:87 rear.. Causing the fronts to skip?
I have recently had a noisey wheel bearing replaced too but can still have a light droning from the rear which mechanic said is coming from the rear diff, if im reading right i can replace with a 5:12 to get better gearing as at the minute 5th is basically redundent?!
Thanks for the help