Chimp Differential type ?

[Andy JB]

Is there a defined way of determining which differential you have fitted?

Mine is a 95/96 Chim 500 (year of changeover). The differential itself has larger cooling fins at the base and an awkward filler position. I think its teh GKN variant, however, i need to be sure on teh basis the oil used is different between types.

[jonnyb]

It sounds like the GKN diff, I have the same. The only way to conclusivly prove it is to take it to a specailist and ask them to have a look or phone the factory.

[pupp]

BTR diffs are finless. Smooth as a baby's bum indeed.

[that daddy]

and the finned one,s require what oil,last part of the trans to service,many thanks.4.0 HC 1995.

[mongoose]

Could it be a Salisbury diff?I had one of these on my 96 Griff,and it was a pain to get to the filler plug.The filler was directly above the drain at the rear,but there are chassis members in the way a bit.Square key to the plug if memory serves
The 'large fins' does sound like the GKN though.....

Edited by mongoose on Thursday 13th July 19:53

[that daddy]

YEP FILLER PLUG SWINE TO GET 1/2 DRIVE FILLER PLUG.FINNED REAR COVER IS THIS ANY HELP I DUNNO.

[jonnyb]

that daddy said:

and the finned one,s require what oil,last part of the trans to service,many thanks.4.0 HC 1995.

SAE 85w90. It states mobilube HD90 but you carnt get this any more.

[jonnyb]

Andy JB said:

Is there a defined way of determining which differential you have fitted?

Mine is a 95/96 Chim 500 (year of changeover). The differential itself has larger cooling fins at the base and an awkward filler position. I think its teh GKN variant, however, i need to be sure on teh basis the oil used is different between types.

There is a piccy of the GKN diff on page 230 of the bible.

[Andy JB]

Thanks - The bible image does look very similar so i will take it as a GKN. Whats oils are used on teh basis teh recommended oil is now discontinued?

[jonnyb]

Andy JB said:

Thanks - The bible image does look very similar so i will take it as a GKN. Whats oils are used on teh basis teh recommended oil is now discontinued?

Any SAE 85w90 will do the job, but for a recommendation ask Opieoilman on the thread in General TVR gossip

[mongoose]

Andy JB said:

Thanks - The bible image does look very similar so i will take it as a GKN. Whats oils are used on teh basis teh recommended oil is now discontinued?

If you can afford it,put Redline super heavy,or just the plain heavy 'shockproof' in it.This oil is suitable for all three diff types apparently.

[That Daddy]

thanks johnny B just thought i would ask i know that HD90 is old just wondered if a LSD oil had replaced it.THANKS AGAIN.