Just wondering how many of you are living on borrowed time, running 400bhp'ish and still on a STANDARD 5 speed box?

Looking to know actual power, which version your 5 speed originated, how long you've maintained that level on the same box and driving style/usage (track or drag etc)... Would also like to hear instances of what power levels 5 speed boxes have failed.

Thanks

 

380/380 EJ257 with 20g and forged pistons.

Earlier TY752 box. Type R close ratio.

Never tracked or launched but takes some abuse on the roads! Covered about 12k.

 

... And still going strong?

So the later TY754 boxes (as legend would have it) are the stronger boxes compared to the earlier TY752? Are we talking only the TY754 in the later STI's or are they the same boxes that are also in the later Turbo2000's etc?

I realise any box can give up on standard power, never mind 40-50% increases... Just trying to guage which is strongest on average

 

Yep no issues what so ever. Recently changed the oil and the dropped oil appeared clean enough.

I know its a bit of a gamble but for me its paid off.

I think its the casing that is stronger on the TY754. I dont think its that much stronger tho.

 

I was running 375 bhp by 390 torque on a ty752 box ending with CAA (short ratio one), car was driven hard, launched it 67 times on the drag strip over 2 years and around the same amount on road...never had any problems with it, even ran a 12.2 1/4 mile...

 

what year would these boxes be in im buyin 1997 type r just wondering if it the same box we speaking of?

 

That will be a TY752 box.

Same box as mine.

 

1997 Type R should have the TY752 short ratio box... Will tell you the exact number on the VIN plate under the bonnet

 

its not the bhp that kills the box its the torque ill soon be running 450bhp on mine so we.ll see how long that lasts lol

 

... I'd assume not long.

I realise its torque, but the difference in BHP to torque is never great and there will be a lot more people that know an estimate of their BHP than the torque.

What are you currently running?

 

Running 390bhp in a STI V3. The 752 box developed crunchy 4th and 5th after about 5K so have now swapped it for a 754 box out of a P1. So far so good.
Never launch my car but do drive it hard.

Will be pushing the limits in the next few weeks as I'm going for bigger injectors and 10% meth mix. Should see power above 410.

I've heard of P1 boxes at over 450 without any issues, just need to be a little sympathetic.

 

So what's the major differences between the TY754's in the P1, STI, Type R and Turbo 2000. Would've thought the JDM versions would be stronger over the UK variants... Soley for the reason its the same with the EJ20 engines (forged internals on the STI's etc)

... Please correct me if I'm wrong though

 

had 380-400 bhp on my P1 box...no issuse

 

[quote=M4RKG;10119383]... I'd assume not long.

I realise its torque, but the difference in BHP to torque is never great and there will be a lot more people that know an estimate of their BHP than the torque.

What are you currently running?

im running 360 on my 28 with 20% meth at the min just finishing off the shoping list with the turbo injectors ect then up to see bob for the new remap

 

450/400 on standard 5 speed v6 sti box

 

... whats the catch?

How long have you been running it at that power?

 

a bout a year ish now, give or take, but its been 380+ for longer than that.

i drive like a granny lol

 

i know a few that have and are running that on a v6 box so many people say never/no chance and im not realy sure where they get there info from

 

Ah! Still... fair play to you, mint figures

Seems like this 350bhp max on a 5 speed is just a myth...


... i've just went a jinxed it havent I?

 

I have just touched and licked everything wood around me

 

Self-fellating?!

 

Mine failed at 215bhp on December 17th 2007 @ 6.30am down Tesco's. 400bhp on a standard UK box? -

P.S. (mine had done 135,000 miles when it went).

 

always one... okay, so its 6-1

But loads of gearboxes will be on the way out after 135'000 miles of normal driving, never mind how people drive Impreza's

 

mines stripped 2nd gear on my 2000 turbo running 280 bhp with 70 odd thousand miles and i was pulling away from a speed bump lol so never say never it can happen at any power level lol.

 

Mine ate 2nd gear at 380/350 after 2weeks of fitting my 18g and supporting mods. I always looked after my box with regards to oil etc. Didn't make much diff. Now at 480/500 with millers 75/140nt oil in, I can use my power without the will it break thing always on my mind. Costly going to 6 speed but I'm sure I'd of gone through the same amount of value in 5 speed boxes by now so for me it was a no brainer going to 6 speed.
I thinkthe 5 speed isue is purely down to luck and driving style IMO.

Gaz

 

My comment was Tongue in cheek due to the mileage which had obviously affected this.

It's well known standard 5 speeds don't take much except for the odd occasion or mechanical sympathy. But what's he point in having the power if your not gonna use it? Bit stoopid?

The 6 people on here who have said what you want to hear are 6 people out of 1000s of Imprezas so I wouldn't say 'there's always one'. There's probably loads more than just me, regardless of miles.

 

450bhp/380ft lb, TY754, 14 thousand miles before swapped out for a 6 speed (for future proofing) but it was still going strong. No drag stuff, but track days etc.

 

Over 400 of each on the same box with a 2.1 a 20G and methanol, will soon see how it lasts with a 2.35

Ran about 380-400 on my old 2.0L with the 20G and methanol on my 752 box without it ever grenading as well.

But I'm always waiting for it to happen, which in it's self can be quite worrying if I'm far from home.

 

The moral of this story?............ "Pure luck" IMO

(And I hope that I'm one of the lucky ones too! )

 

More people on here "getting away with it" than I thought there would be tho.