turbo upgrade and stock transmission

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Aug 27, 2003 | 08:54 AM

RSquared

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Posts: n/a

turbo upgrade and stock transmission

hey,

i am looking at a stage II or stage III turbo kit for my 2000 Impreza 2.5L RS that'll add approximately 60-80 HP. has anyone had issues with the stock transmission? can it handle this increase or do i need an aftermarket tranny?

Aug 27, 2003 | 01:06 PM

Defiantguy

Registered User

Joined: May 2003

Posts: 139

From: Florida

Car Info: 2004 Subaru WRX

all I've been advised is new clutch is required. The tranny SHOULD hold up if you treat it right.

Aug 27, 2003 | 03:30 PM

impreza7

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Don't powershift or dump the clutch, EVER!! It might get a year or two knocked off of its life, but should be ok if you don't race very often.

7

Aug 27, 2003 | 07:36 PM

Kevin M

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iTrader: (12)

Joined: Nov 2002

Posts: 18,369

From: Reno, NV

Car Info: 1993/2000/2001 GF4 mostly red

Download these and drive like he does, and you should have no problems with your (new aftermarket) clutch. The gears will hold roughly 300 lb./ft. of torque if you treat it right.

Aug 28, 2003 | 04:18 PM

boomer

Registered User

Joined: Jul 2003

Posts: 156

From: some in the wrc (washington)

Car Info: 99 2.5rs

I'd like to point out that their are people on this board who have broke first with stock power levels. But that was because they dumped the clutch at like 5500 rpm's. so as along as you slip the clutch you should be o.k.

Remember that the wrx has the same tranny as we do just different gear ratio. But we have the ability to make more torque at a lower gear killing rpm. Just be careful and you will be in good shape or you could just do a 6mt swap and proably never have to worry about killing a tranny again.

Hope this helped, later.

Aug 31, 2003 | 07:52 PM

sscguy

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Just curious, with that in mind is there any advantage to the WRX tranny as far as ratios go? Is it close-ratio or what?

Aug 31, 2003 | 08:09 PM

Kevin M

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iTrader: (12)

Joined: Nov 2002

Posts: 18,369

From: Reno, NV

Car Info: 1993/2000/2001 GF4 mostly red

It's very wide ratio, and the gears are taller. It's not really any stronger, but the taller gears result in somewhat less stress on things (gears are torque multipliers).