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Is a Type R gearbox good for upto 400bhp?

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Old 20 January 2004, 10:40 AM
  #1  
Triple X
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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?
Old 20 January 2004, 11:08 AM
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john banks
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sg72 is and does quite a high mileage IIRC.

Bob and Harvey are running the 4 door STi gearboxes with success.
Old 20 January 2004, 12:59 PM
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Triple X
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Which is the sg72 John?

Cheers, John
Old 20 January 2004, 01:13 PM
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john banks
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A user on here running 405 BHP on his STi Type R with a 20G.
Old 20 January 2004, 01:27 PM
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Andy McCord
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sg72 is his snet username john, not a gearbox!!
Old 20 January 2004, 02:19 PM
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Triple X
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LOL, had me thinking sg72 was a gearbox or gear set that was upto the job!
I'll get me coat.
Old 20 January 2004, 03:37 PM
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TopBanana
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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?
Old 20 January 2004, 04:16 PM
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David_Wallis
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Location: Leeds - It was 562.4bhp@28psi on Optimax, How much closer to 600 with race fuel and a bigger turbo?
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they changed the casing on the 99 not the 98.

David
Old 20 January 2004, 04:40 PM
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TopBanana
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But can you mount it up to a pre-99 effectively?
Old 20 January 2004, 05:23 PM
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Mine is a 99 so a bit of good news.
Old 20 January 2004, 05:30 PM
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dowser
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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
Old 20 January 2004, 05:48 PM
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TopBanana
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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.
Old 20 January 2004, 06:10 PM
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David_Wallis
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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
Old 20 January 2004, 09:33 PM
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sg72
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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.
Old 20 January 2004, 09:52 PM
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Tone Loc
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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.
Old 20 January 2004, 10:07 PM
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Andy.F
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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
Old 20 January 2004, 10:10 PM
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AndrewC
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I think it's all down to luck.

Andy is lucky with turbo's, unlucky with gearboxes
Old 20 January 2004, 10:17 PM
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Tone Loc
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LOL. So what gearset should i buy? Only joking.... don't even want to start that again .

Tony.
Old 20 January 2004, 10:23 PM
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sg72
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Don't think Andy's "Lucky with Turbos ".

They are proven. Good.

Steve.
Old 20 January 2004, 10:34 PM
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beryllium
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i think Andy needs a hollinger dog box
Old 20 January 2004, 11:13 PM
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Triple X
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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
Old 20 January 2004, 11:17 PM
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Hollinger Mmmmmm - top dog but I have other plans
Old 20 January 2004, 11:20 PM
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sg72
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Yeh! Variomatic, Andy. LOL!

See you soon?

Steve.
Old 20 January 2004, 11:33 PM
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carlos_hiraoka
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what about the QUAIFE gearsets ?????

Carlos H.
Old 20 January 2004, 11:41 PM
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sg72
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Think I read somewhere about 5th on Type Rs only having one syncro ring.
Whereas others have Two?

Anyone confirm ?
Old 21 January 2004, 08:00 AM
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dowser
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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
Old 23 January 2004, 05:54 PM
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911
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Cool

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.
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