I know there is no definate answer to this as it depends on its age, condition etc but is anyone doing this on a standard Type R box?

 

sg72 is and does quite a high mileage IIRC.

Bob and Harvey are running the 4 door STi gearboxes with success.

 

Which is the sg72 John?

Cheers, John

 

A user on here running 405 BHP on his STi Type R with a 20G.

 

sg72 is his snet username john, not a gearbox!!

 

LOL, had me thinking sg72 was a gearbox or gear set that was upto the job!
I'll get me coat.

 

They apparently changed the mounting in 98 I think, which leads to less casing flex. Question is... can a newer box be fitted to an older car reaping the benefits if there are fewer bolt holes?

 

they changed the casing on the 99 not the 98.

David

 

But can you mount it up to a pre-99 effectively?

 

Mine is a 99 so a bit of good news.

 

Casing is different between phase 1 & 2, and you can fit either to anything. Only issue is that pahse one use 4 bolts, and phase 2 7 or 8...can't remember

I've now run a Legacy turbo (circa '97) box for upwards of 20k kms without issue at around 310-320 ps. But I've taken it easy

Richard

 

So it follows that if you can only use 4 bolts, even if you have a MY99+ gearbox, you won't get any of the benefits.

 

no, I dont think the bolts provide the extra strength, but they may help.. my six speed is held by four..

Phase 1 - 2 / engine /box's are interchangable as richard says
just pay attention to diff ratio's

 

Hi John.

As it happens.My cars gearbox has just been taken out today.
To fix a syncro problem in 5th.
Think this is more of an age/mileage related thing.
Gears themselves appear to hold up well at this sort of power.
And hopefully slightly beyond.(Fingers crossed).

Steve.

 

What box does Andy F have... is it the standard short ratio RA?

Seems i have the shorter ratio box in my WRX too.... do these have the same sort of problems with 3rd/4th as the UK boxes?

Tony.

 

Ah ha ha ha ha

I've broken 2x RA 2nd gears, 1x 99UK 3rd gear and 1x 99UK 5th gear and my current RA box has just developed a 5th gear fault today Grrrr

Andy

 

I think it's all down to luck.

Andy is lucky with turbo's, unlucky with gearboxes

 

LOL. So what gearset should i buy? Only joking.... don't even want to start that again .

Tony.

 

Don't think Andy's "Lucky with Turbos ".

They are proven. Good.

Steve.

 

i think Andy needs a hollinger dog box

 

Cheers for the input fella's.
sg72, i too have a sycrho prob with fifth, it would seem this is something common to a lot of impreza gear boxes independant of power, so all in all i think im going to try my luck.

Cheers, John

 

Hollinger Mmmmmm - top dog but I have other plans

 

Yeh! Variomatic, Andy. LOL!

See you soon?

Steve.

 

what about the QUAIFE gearsets ?????

Carlos H.

 

Think I read somewhere about 5th on Type Rs only having one syncro ring.
Whereas others have Two?

Anyone confirm ?

 

I should have kept quiet...just lunched 2nd in my poor Legacy box after upping the power a bit.... (finally fixed my det issue - operator error )

Bugger, but could have been worse - 6MT linkage en-route and prop being dropped off for shortening tonight.

Richard

 

From what I can gather in recent threads, just get a 6 speed with all the trans bits and the job is done to 350/400 bhp? Need to carry a bit more weight (25Kg) but a cheap alternative to Lateral kit/Quaife etc? You get to fit a bigger clutch if you want too!
Sounds just the ticket to me.

Oh, and buy a trans jack too, mines a Draper floor jack, realy good and just £80.....

Does anyone yet have a handle on which Impreza has what diff ratio/gear ratios so to compare, say, an early RA/4,11 trans and a v7 scooby trans???

Graham.