Knighty99

iTrader: (1)

AS above Just wanted to know if a UK gearbox will fit into a WRX import?????
Cheers

Damocell

iTrader: (1)

Yes but it will need the rear diff changing.

On a side note why are you changing the WRX box for the UK box?
What year WRX?

The Uk boxes generally have a longer ratio so it will slow the acceleration in a given gear.

Damo

Knighty99

iTrader: (1)

I'm changing to a Uk one because i've done three of the same WRX boxes each one with third gear going So i thought i'd try a UK box??

Dan

Damocell

iTrader: (1)

The general idea is that the UK box is weaker, and only good for approximately 320lbft,

What power are you running?
What year car is it for?

Damo

Knighty99

iTrader: (1)

Runnin 305bhp and about 260lbft the car is a MY 95

WRXshaneWRX

iTrader: (1)

you shouldnt be killing a jdm box with 260lbft torque should you?
im selling one very cheap if u want it?

Knighty99

iTrader: (1)

Ha Ha i was just lookin at your post mate
I've managed to break three and i'm lookin for my 4th they have all had third gear go, i know they ain't breakin because of the torque and i don't ragg the **** out of it every where
I've been offered a gearbox and a rear diff for a decent price from someone on scoobynet.

Dan

John Stevenson

Scoobynet Myth No. 327, weaker than what a Std JDM WRX box... rubbish.

---john---

Knighty99

iTrader: (1)

cheers for clearin that up

John Stevenson

Shorter ratios are not always best, Horses for Courses !!!

Damocell

iTrader: (1)

Thats funny a well respected tuner told me that the UK box was weaker....I suppose he must be wrong

But I think I'll believe what he says.

Damo

timchump

I have been advised by a subaru specalist that there is no difference between uk and jap gearboxes (strength wise) and i should leave my standard uk box alone. However, if it ever did let go i would definitely consider replacing it with a jap sti box as the general opinion does seem to be that they are stronger, and nobody thinks UK boxes are stronger that jap ones, if you get me
(my car my99 uk)

911

There are more factors to gearbox life that just torque.

If to ragg the box through the gear then it won't last; if you get the clutch biting while still changing into the gear it will go bang as it jumps back into neutral etc.

As with all mass produced parts, there are variable quality levels and metalurgic differences, and sometimes you happen on a 'good' box with all the posatives adding up to a great box that breaks the Myth John above talks wisely of.

I have an Sti v3 stock trans with simple Castrol oil from Halfords.

It has survived all the car's hard life, and in the last 3 years, a 370 lbft torque level, 120+ hillclimb/drag starts, and 8 K road miles.
It is still perfect and out of the car.(as a reliable spare)

The car now has a supposedly stronger V6 Type R box with plated diff and a dccd centre diff. I sure hope I have another 'good' box!

Mind you, several have said I drive like a wuss and tootle off the race start, but you judge:
DropShots Day
I don't want any comments from John either just because he is faster (I think)

Tim W

iTrader: (1)

There is no difference other than ratios between jdm and euro model gearboxes, they share the same cases and manufacturing processes. There is a subtle difference in case design between the phase one and phase 2 gearboxes with it is aledged is a stronger case (phase 2 came in with the introduction of the MY99 - identified by not having an inspection plate over the selector mechanism and 8 instead of 4 mounting bolts)

Sti gearboxes again share the same housings, however the gears are supposedly put through an additional hardening process. The later phase 2 Sti boxes certainly seem to be more capable of handling higher torque, and take a bit more abuse. But this is relative, if a UK box can handle up to 320lbft the Sti can take 350lbft...but there are always exceptions to the 'rule'