As above I am looking into a larger diff for my 3dr.I don't want anything noisy clonky diffs like Grippa,don't want a Quaife either.
What are my options on a larger diff,where can I get one from and what sort of money please?I know Kevin Sharp had a 9" diff on his escos converted to rwd.
Will the driveshafts have to be modified or the beam itself?Any help would be greatly appreciated.
Many thanks.Lee.

 

i got a quaife atb in my 3 door and its spot on mate

 

The 9" fits in the std 2wd beam, you have to drill 1 hole in the floorpan further over to bolt the diff mount to the car as they use a different mount, and iirc you can use a pair of the longer 2wd driveshafts.

 

Supra mk.II firs with adapters that are cheap.

 

9'' is an rs 500 diff i think. Rod use,s a daimler limo diff think thats a 10.5'' but u would have to pm him about beam / flange and sharft mods thats the cheap option!. If u go ford 9'' there mega money so u may as well go gripper or quaife with a uprated cwp good for 500lb ft un less u drive like a twat all the time

 

Is the 9" diff like an RS500 ITEM THEN,i THOUGHT THE DIFF ON A 500 WAS THE SAME AS ANY 2WD DIFF?
Where could I get a 9" diff from and what sort of prices am I looking at please?
MANY THANKS.Lee.

 

standard RS500 diff is a 7.5". 9" was developed for the RS500 touring cars ( i think ) you will pay about £2500 - £3000 for a 9".

 

Yeah something like that a read somewear about it being something to do with the rs500

 

From what I've read the 9" rear end was homologated originally for the RS200 to cope with 650bhp+ and then adapted for use in the Gp A Sierras.
They were originally plate type ZF ones at first then viscous coupling on the Mk2 design.
Think you can get 4:27, 4.09, 3.82, 3.64, 3.42, 3.25 and 3.08 ratios. Andy G uses a VC in his Focus - the advantanges of the bigger VC is that it resists the build up of heat for longer without a cooler (although you could plumb one in ) and the diff can be rated much 'tighter' than a 7.5" with nickel plates - see the big thread on rear diffs for more info from the people who know like ian sibbert, markk, Tony Ryan etc.
The diff internals are much stronger obviously on the 9" as well.
As said though, they're not cheap.
Have you thought about the Titan plated diff ( supposed to be quieter than a Gripper ) that Mike R can get hold of in a 7.5" fitment? I don't know how much power/torque you run and how you drive though

 

9" diff,how bloody much.Well that's out the window then.I'm looking for something to cope with 500bhp probably 450lbs/ft torque at least.I was contemplating just getting my standard diff rebuilt as the car won't be tracked,launched or driven that hard on the road.The planet gears shouldn't break if it's not launched should it?
So u think I should contact MIKE R then to see wht he has for a 7.5" diff?Like I say I don't wasnt it noisy and clonkey like a grippa diff.What size are the Quaife diffs and Grippa diffs anyway are they still standard 7.5" size?

Thanks.Lee.

 

bit less BHP than your lookin for but this may be some help

https://passionford.com/forum/genera...-cosworth.html

 

There 7.5 inch or 7 if u wont. Mines a gripper and its not that clonkey lol its fine to live with its the torque that kills them and the week bit with a 7.5 is the crown wheel and pinion i ripped all the teeth off mine in 2nd comeing off a roundabout hard so u need to up rate that aswell if u say 7.5 but u will always be on the limits of a diff that size with big torque

 

Thanks some good info there guys,just read the diff thread,just contacted Mike R for info on the Titan diff.
CheeRS.Lee.

 

Good move Lee - I am on my third diff remember pal - so will be watching your moves carefully

 

3k for a 9" Diff??? KIN-HELL.............

Lee, Quaife on my saff was superb m8....but you don't want one anyway
You're spending some pennies on that car m8.............

 

Pete,u have a pm m8.
CheeRS.Lee.

 

Its more like £4k+ for a 9" now if you can find one!

 

I am having the same problem in my Cosse 2wd.
Does anyone have further info on this 9" diff? What cars are using it?

Has anyone consider the Ford 8.8 diff from Thunderbird?
Or a BMW diff?

Regarding the Supra MkII solution, can you please give some more details? I.e. where to buy etc?

 

Someone that was once selling one may know a bit about them

http://fordpower.org.uk/forum/index....&mode=threaded

 

With regards the 8.8, i looked into this but you are still looking at £1000 for the diff (all be it brand new everything) and then you have to do a lot of modding to the beam to make it fit.

Contact Lincoln off here if you want more info as he has gone this route.

With regards the 9inch, the last time i spoke to Bara im sure they were like £3000-3500+vat

 

Yes they are 3.5k+vat at BARA,u do have to modify the beam and the group A diff mount is no good,there is a specificalkly designed mount for a 9" diff,I think u have to drill a hole in the body aswell to fit this diff mount.Kevin Sharp,breaking his escos in the parts section,he had the diff,now sold,he knows quite a lot about it.
CheeRS.Lee.

 

here mate,the first one with jaguar diff,the second with BMW M5

 

You dont have to modify the beam as long as you use a 2wd one the 9" diff fits staight in with no mods.

 

Ok Paul,good knowledge there.Sorry I was getting confussed as Kevin has an escos converted to rwd,different beam of course.
Thanks.Lee.

 

Very interesting!!
Are you saying I could replace my 7,5" diff in my 2wd 3doors Sierra Cosworth with a 9" Ford diff without any mods, beam, cardan etc.?
I like it!
Have you any name of the car types I could buy the 9" diff from?

 

Here is ony guy, ho may have a 9" diff
http://www.escortrscosworth.com/foru...ad.php?t=12190

 

Hi Mate,

Got any more info on what diffs these are and what models they came out of?

Also, where can you get the adapters cheap?

what sort of power/torque can they take?

Cheers in advance

Ran

 

doh - thought i had pm'd him

 

you could buy my 9" diff for 3.5k all if you want - unrun since rebuild !