I have a european model xj 2000 sport with the 2.5 td rhd(im in Ireland) and want to know what gears i have...is there some sort of stamp on the diffs or some sort of identifacation mark that will let my know?

D30/d35 is what I have..


Thanks in advance
Dwighet

 

i'm not sure what came in those stock. maybe 4.10's.
there should be a tag on the front and possibly rear diff covers held by two of the cover bolts that should tell you what gears are in there.

if you're missing those, you could always pull the cover and check the end of the ring gear for the series of numbers. there is a set of numbers that tell you the ring gear teeth and the pinion gear teeth. you would divide those numbers and that will tell you the ratio.

 

Thanks for that...The cover will be coming off this weekend as Im throwing in a new HD axle kit so will take a look then..
Cheers

 

You can also scotch the tires and lift one of the rears, put it in neutral, spin the tire one complete turn and count how many times the yoke spins. 3 1/2 would be 3.55, little over 4 would be 4.10 and so on.

 

Very good..... why didnt I think of that...

 

If you take the diff cover off you can look on the ring gear and there will be a list of numbers take the last 4 numbers and divide the first 2 by the second 2 and will give you your ratio. A 3.73 ratio will read 41 11 as the last 2 sets of numbers (41\11=3.727272) hope this helps.

 

Thank you Sir....

 

Didn't see this part of the thread, oops.

So yeah x2

 

Not to worry....
The pic you posted Made it even more easier for me
Thanks again

 

If you only lift ONE rear tire and have an open diff you have to double (I believe) what the pinion turns because of the effect of the spider gears. If you have a limited slip you'll need to lift both tires, then the count is whatever the pinion turns.

 

you are correct double the amount of turns with one wheel off ground