6 speeds cost around 1500£ + 250 for rear brakes.
5 speeds can fetch 400£.

If you have funds its only logical step:)

Find me a 6 speed with everything needed for the conversion for that money! Flywheel, clutch, gear linkage and prop

I paid that amount for full kit including cradle,dif,prop etc (got lucky and found one from early newage with front suretrack dif)......i know one from hawk sti,dccd etc. for 2k delivered if any one is interested:)



https://www.scoobynet.com/subaru-par...6-6-speed.html

standard wrx has the best of everything according to scabbynet, sti is a pointless model

You only need uk 6 speed box and linkage ..
prop from a bug sti or wrx auto...
rubber gearbox mount not cradle..
R160 3.54 diff from a uk classic and your sorted. Keep your 5 speed starter ..clutch and flywheel and rear brakes.

Stripped my 5 speed with just 340bhp.

Get a uprated gear set built into your 5 speed or fit a 6 speed.

Didn't strip my 5 speed with 450bhp for 18k miles - it's not always so clear cut. If its a fast road car/ track car without standing start drag/ hard launches it'll be fine.

Brave words lol

Think Tweaks once told me he ran a 5 speed on two of his cars running around 500bhp with no issues.

There's no way on earth I'd want shorter 1st & 2nd ratio's going over 350bhp in a car weighing less than 1300kg. Sure it'd be great on a track where you don't see sub 30mph speeds but I like to launch from traffic/drag lights.

In regards to possible long term plans of going past 350bhp I'd be very interested in options to preserve my current 5 speed or a reasonably cost effective alternative to the 6 speed. Is it reasonable to just have a cheap back up 5 speed, how much money are they to fit?

Is there a definitive thread?

Free to fit. I had a spare five speed that I recently sold, it paid for my six speed and most of the bits for the conversion

missing gears is a common way to kill a box. I ran 410ftlb on a hawk 5 speed for 14 months no issues. As above there is alot to be said for mechanical sympthay

Mechanical sympathy. Hmmm
So drag racing is a no no for the five speed.
What is safe is track days and road use with no harsh gear changes, no power sliding, no launches and easy on the box in the lower gears?

Thus defeating the object of having 400+ hp in the first place. I'm sure half these people either drive like ****ing grannies or just want to brag about having 400hp....

If you drive it properly even a 6speed is not safe ;)

You see my point then

I've owned my WRX over 6 years and have done 50-60 heavy launches at power levels ranging from 240-333 BHP. Still no issues and original clutch still going good. I do slip the clutch though until I'm at a speed it won't bog down at so maybe that technique limits torque going through the box? In 1st anyway.

At 350bhp you're as quick on the strip as most 450bhp STI's, so no matter which car and box you use improving times from these levels will cost big time.

Obviously not a paddle clutch then? I get 30 launches out a clutch before it's worn out. What's your 60ft time? I find the organics don't bite and just smell a lot!

100%!

Its just willy waving pub talk cos it can't be been driven properly if a 5sp is in one piece at 400+ :D

1.88 quickest but wheel spin probably stopped the clutch and box taking too much abuse, I average around 2.0 normally.

I suppose running high psi and going to the strip on cooler days will be 5 speed friendly.

The best thing for your five speed is an extra gear

just to point out matt you wrx isnt as fast as a 450 bhp sti, well apart from in your mind that is ;)

I know, I don't have 350bhp.

i suspect you have the precision of the titanic when it comes to driving then,,,,,, lol

all pish taking aside, hawkeye 5 speeds do seem to be surviving better than classic 5 speeds. but as said no gearbox is faultless when track and drag are involved. Even rally cars used to break gearbox's untill they went semi auto sequential.

Not really - my car was dynoed at that and got/gets fully used . Maybe I can just change gear...

Exactly, there is no point taking any of these things seriously as even a sequential cryo'd dog box can break...

At the end of the day the odds are a 5sp will break, and a 6sp will last longer. (I'm not saying it won't break, but it should be a little bit stronger) its a fairly proven and accepted route to go if you are going to use your car hard and have big power.

Some peoples driving styles are more forgiving than others, some people aren't as competitive than others. I know people who would rather baby the car and get a slightly slower time. I am of the "go hard or go home" school of though and will drive the car to the very limit to get the best time.

I might break stuff more but its ****ing good fun :D

:thumb:

spot on, if you're after good times no point launching at 2.5k and slipping the clutch like a poofter scared your inferior car will break.

Resident cyber bully now homophobe. Thought drag racing bored you? though making a point of only racing women in less powerful cars will get tedious.

but she had the all conquering 5 speed wrx, i merely had an sti:lol1:

plus i thought the 5 speed was equivalent to 100 bhp or have you forgotten the b0llocks you keep spouting now??

She lost on pupose for an easy life.

no she lost because she has a wrx:thumb:

I'm breaking rear driveshafts on a launch now. Hmmm