help with diff ratio

[cortinasgoneforaburton]

Hi guys and gals ive got a post on here about changing an axle on a mk5tina but i am being told to check diff ratio now i know how to do it but what i am gonna do first on tuesday when i start is to jack the rear wheels off floor, mark a tyre and prop and see how many times prop goes round for one full revolution of wheel i suppose the less turns the better if anyone could also do this if they know there diff ratio so i have got somthing to compare

[Guest cortinamad-gonetoo]

isnt there just a tag on your diff?

[Guest cortinamad-gonetoo]

i dont know how you do it by jacking car up and turning wheel

 

but you count the teeth on crown wheel and count the teet on pinion then divide crown divided by pinion

 

you maybe have the 4.11 some 1.6 saloons did

[bortaf]

WHS /\

just check the diff tag, if it aint there do the old count the prop V's wheel bit, some tippex and a jack and your away