will my diff fit?
 

will my diff from a my95 wrx fit a wrx ra gearbox?:wonder:

anyone?

No, you'll need the diff too, if it's a 95RA box. The RA has a 3.9 rear diff, the wrx a 4.1
See here for combinations:The SPDA - Transmission Chart

thanks for the reply mate.ive seen the chart but to be honest i havent a clue what im looking for:freak3: wheres the best place to find a diff if i already have a gearbox?:wonder:

Is it a 95 box? As looking at the chart, there are diferences on some years.

its an early classic ra i think.not sure if 94/95.the code is ty752vb3ea.

Looking at the chart, thats a 95RA box, so will need the 3.9 rear diff.

thanks mate:thumb: any idea where id get a decent diff from?

You could try Api? They've been good for me in the past, he'll be able to confirm what you need too.

great.ill try him in the morning:thumb:

Only the sti ra gearbox needs the 3.9 diff, afaik the wrx ra runs the same diff as a wrx with diff ratio 4.111.

Banny

My 95RA has the 3.9. Look at the chart above.

i guess its a tricky question.im even more puzzled now:wonder:

Looks like they gave them the same setup bar the dccd centre on the STi model, my chart also agrees ;)

Manual transmission ratio chart

Banny

Good thing is if and when i blow up the RA box, a jdm 6 speed can use my existing diff/shafts/hubs, which is ace!:luxhello:

so it looks like it will fit without another diff then:luxhello:

I thought we'd decided you needed another diff, a 3.9?!

banny said i didnt need one as the gearbox is from a wrx ra?:wonder: :wonder:

If you look on banni's and my chart, the TY752VB3EA box fitted to the 95 RA uses a 3.9 diff, yours is the 4.1.

Could be a time-wasting and expensive mistake if you fit the wrong rear diff. Your best bet,, as mentioned, is to speak to David at API. He'll defo give you the correct advice - all you'll prob need to do, is give him your 7-digit 'Applied Model' code (it's on the VIN plate, riveted to the passenger front suspension turret)...

Yep, he's very helpfull, theres not a lot he doesn't know about diffs/gearboxes!

already pmd him:thumb:

buy a rear diff from a sport, they are 3,9.
Personally I dont see any good reason to fit the wrx RA box, sorry.

i love my RA box, but it'r all down to personal taste.

why do you?
is it the really short ratios that mean you are changing gear constantly or is that you love cruising on the motorway at 5r rpms? ;)

I got rid of my RA box it was just so damned buzzy

Er... could it not be the blistering accleration WITH the noise? Gets the ol' adrenalin going, I'll wager? :)

the cars a toy really, not used on motorways much. I just love the way it pulls in any gear. I admit, it feels quicker than it is!

Out of about 20 calls to breakers, ONLY A grade had a 3.9 in stock, and asked over £550 for it..

API however did a rebuild on my old one for a bit less...

get in touch with david and he'll advise you in the right direction

Grade A 'crack me up' with their prices. :rolleyes: