hybrid12

iTrader: (5)

currently running 350bhp on a 2004 wrx, is the gearbox at its limit?

IainMilford

iTrader: (15)

have read about WRX gearboxes taking as much as 400bhp, if you dont rag it everywhere you will be ok but completely on the limit, STI gearboxes can 400 safer

SSCJAY

It's mainly torque that kills gearboxes, in particular 3rd gear is the weakest.

about 380 lb/ft is the most your box will reliably handle.

Henrik

iTrader: (5)

I've been running 350ish and then 390ish bhp (335, then 354 and then 392 lbft torque) for 9000 miles now, still fine, but my uprated clutch is starting to smell a bit

Most of my driving is motorways and country back roads, and I never ever launch it in first etc, although do "boot it" several times in second and third every day.

TonyBurns

iTrader: (3)

Rated at 450-500lb ft of torque

Tony

Henrik

iTrader: (5)

For the WRX? I'll be happy if it is

finchyboy

I have a 2005 WRX that i've recently converted to a 2.5. It minced the box in 2000 miles of sensible driving !!!

TonyBurns

iTrader: (3)

Doh i should read properly thats the STI 6 speed box
About 350 max for the 5 speed on a 2.5ltr

Tony

Stuart Page

iTrader: (4)

360bhp and 343lbft on my 01WRX 5spd was ok with normal driving.

Now going to PPG though.

Henrik

iTrader: (5)

Mind me asking how much you're paying for the PPG? I might be in the market for one at some point too

WRX_Rich

iTrader: (5)

mine lasted 10k miles running 320 lbs with 390 bhp, never broke it to be honest just swapped to ppg

not worth doing unless you understand that its a matter of when rather than if you need to replace

knowing the gearbox is only a few good launches away from death take the fun out of it IMHO

Stuart Page

iTrader: (4)

Picked mine up 2nd hand, can pm if you want. Would have had to save another 6 months if i'd bought new

Tidgy

about £3.5k roughly for built ppg straight cut box (5 speed) nearer £4.5k for a 6 speeder

stevie1982

iTrader: (16)

AN sti 6 SPEED can take this power?

what can the standard sti clutch and flywheel take then?

regards

Henrik

iTrader: (5)

Hmm, I need to save some more then .. I have about 1500 stashed away for the purpose of gearbox replacement which I'm hoping will get me a 6 speeder to fit myself once the current box goes, but a straight cut PPG just sounds *so* good

Henrik

iTrader: (5)

Btw, what are parts like for the PPG? I'm thinking that if I bought a 2nd hand one, would I be able to get spares easily if I then dropped a cog?

wolfie28

Approx high 300's of torque, driven with respect

Going 4 400bhp

iTrader: (2)

Spares are easy to get, the guy who had my car before me some how broke a cog and it was up and running again in no time.

When i took the car off him i had the box rebuilt again and it has been great.

Im trying to get rid of it at the mo though as im driving the car a lot and im fed up with the wine! 5 speed straight cut.