I see you're new too.

__________________
Air is for pussies.

You will find its possibly out side of there dyno operators skill set

You would be quite silly going for a 5 speed replacment

6 speed for the win

Maybe straight cut 1st-4th gears as part of a rebuilt 5sp = hybrid?

__________________
[I]trolololol[/I]

@ Nauli, yes I understand even the Power FC will cost me $650 odd but at least it's a fix price and the vibe I am getting from speaking to those workshops about Autronics is fairly negative and one of them can't remember which one said that it is not very reliable and will open up doors to new problem like cold start etc.

@nick.... Hmmm I'm not too sure exactly in terms of technical spec, but this is an exact copy paste of an enquiry I made from All Drive Subaru

The ADS Hybrid SpecII gearbox:



The Hybrid is an improved and strengthened five-speed box designed for enthusiasts who want to increase the supported power rating of their transmission and retain gearbox drivability and reliability.

The hybrid 5-speed uses a combination of brand new gears sourced from Australian, Japanese and European Subaru gearboxes. After over 6 years of extensive in-house testing, researching and development, we have developed the ultimate combination of internal components guaranteed to give greater strength and improved usability.

Benefits include improved low-speed gear selection, improved baulking resistance due to modified sliding sleeves and hubs, and better fifth gear selection with improved synchro cones and ball bearing shifters.



The Hybrid 5-speed gearbox carries a supported power rating of 230 kw at the wheels and comes with 24 months unlimited km warranty.



Due to the amount of R&D invested into this design, we don’t disclose exact components, however it does include:



Ø Brand new tested OEM gearset (Strongest in the entire Subaru 5 speed range)

Ø Brand new revised hubs and sliders

Ø Brand new gearbox bearing kit

Ø Inspected viscous coupling (optional upgrade to new revised 4 kg coupling)

Ø Brand new revised synchronisers

Ø Brand new centre differential bearing kit

Ø Hi advanced bead blasted gearbox case

Ø New OEM gasket and seal kit

Ø Complete serviced fork and rod kit

Ø Serviced front differential

Ø Set and adjusted to strict ADS specifications



The Hybrid SpecII gearbox costs: $3250 + GST


@ Seagull yes I would love a 6 Speed but it cost double that and with my current situation it's just unlikely going to ever happen, the bummer thing about this is I have the money and can comfortably spend it but by Missus won't let me LOL... she's one of those type of person who spends 20% and save 80%....

So you guys think 5 Speed Hybrid like mentioned above isn't a good idea? I know it's not going to be as strong as the 6 Speed but I figure it's gotta be a lot better than the standard one I have at the moment right?

Thanks again guys

Also guys,

Would anyone be interested in helping me fit the Walbro Fuel Pump on GC8 WRX? I'm happy to pay a fair amount and more importantly I wanted to see and learn how it's done so that I can do it myself next time. I looked at a few DiY threads and video but not overly confident in myself the first time LOL

The reason I'm asking and not going to workshops is that I won't be able to see it in workshops okus I've got some sensitive cables running the back seat and prefer if I'm there when the install is done

I'm in SOR but happy to travel your way whichever is more convenient.

Pls PM me or text me 0409817417 if anyone's keen.

Cheers guys, much appreciated

Not quite the same as mine is all Version 6 STI underneath, but...


- Standard 440cc injectors
- Walbro 255 lph fuel pump, otherwise standard fuel system
- Standard VF28 turbo
- Hyperflow Top Mount Intercooler
- 3" Stainless Turboback Exhaust
- Kinugawa Unequal Length Headers
- Standard air intake with resonator delete
- Standard STI 2.0L engine

177 kw / 236 hp at the wheels on Maximum Motorsport dyno, 13.0 @ 173 km/h on the quarter mile with STI 5 speed.

If there's nothing wrong with your 5sp leave it alone and spend the money on other stuff. By the sounds of the way you drive and use the car a strengthened gearbox will be a waste of money.

__________________
Bye bye betty blue. Hello F6.

Seriously it's not hard and if you're clean and methodical it'll be done in no time at all 😉

__________________
1980 MK2 Ford Escort RS2000
1979 MK2 Ford Escort RS1800 GRP4 spec historic rally car.
1998 GC8 WRX Tarmac rally car

While it's my first day, I have to agree with Nick. I ran a 4.11 5 speed box behind my built motor for five or so years before eventually upgrading to a six speed.

__________________
Air is for pussies.

Look on YouTube for your fuel pump swap. Seriously dude. I installed my coilovers, swaybars, linkages, strut tops, rotors, pads etc etc..... from videos that I found there. There are loads of tutorials which can be cross referenced from other forums.

Have a go yourself. What could possibly go wrong?

__________________
Bye bye betty blue. Hello F6.