5 speed gearbox + 400 bhp ??
25 October 2014, 09:43 PM
#33
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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
https://www.scoobynet.com/subaru-par...6-6-speed.html
Last edited by beliblisk; 25 October 2014 at 09:46 PM.
02 November 2014, 03:26 PM
#35
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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.
18 November 2014, 11:59 AM
#39
Scooby Regular
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?
18 November 2014, 12:18 PM
#40
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?
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?
18 November 2014, 12:23 PM
#41
Scooby Regular
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
18 November 2014, 01:08 PM
#42
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?
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?
18 November 2014, 01:32 PM
#43
If you drive it properly even a 6speed is not safe
18 November 2014, 01:33 PM
#44
18 November 2014, 01:36 PM
#45
Scooby Regular
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.
Last edited by RS_Matt; 18 November 2014 at 01:38 PM.
18 November 2014, 01:38 PM
#46
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?
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.
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.
18 November 2014, 02:02 PM
#48
Scooby Regular
I suppose running high psi and going to the strip on cooler days will be 5 speed friendly.
18 November 2014, 03:15 PM
#51
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18 November 2014, 03:42 PM
#52
Scooby Regular
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.
18 November 2014, 04:03 PM
#53
Not really - my car was dynoed at that and got/gets fully used . Maybe I can just change gear...
18 November 2014, 04:27 PM
#54
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.
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.
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
18 November 2014, 04:31 PM
#55
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
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
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.
