uprated gearboxes and diffs
#1
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uprated gearboxes and diffs
what power are the general boxes rated too and what are the prices of uprated ones, ive got a history of doing boxes down to my embarresing ham-fisted gearchanges
just wondering on options and what power there rated too aswell as the obvious price involved
cheers again, im sorry i keep askign questions but im serious about getting a scoobie and wanna get a good idea of what i need to make it similer power to my old t34 stage cossie holding 27psi
cheers
just wondering on options and what power there rated too aswell as the obvious price involved
cheers again, im sorry i keep askign questions but im serious about getting a scoobie and wanna get a good idea of what i need to make it similer power to my old t34 stage cossie holding 27psi
cheers
#3
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I smashed 2 WRX gearboxs running prob 250/250 but others have been running 400 on them, depends on the driver
But agree with the above any gearbox queries API is the place to go
But agree with the above any gearbox queries API is the place to go
#4
David at API is the master but as a guidline found during my searches (I ended up at API too)
UK/WRX classic boxes tolerate about 300/330 lbft torque
Sti Ra/Sti classics tolerate about 350 to 370 lbft in V3 /V4 V5 V6 specs
To reliably tolerate 380 lbft +
1
Fit a 6 speed box/prop/rear diff for £2000 ish + fitting
2
Fit a ppg gearset and some fresh synchro's for about £3000 + fitting
The 6 speeder is bullet proof and much heavier than a 5 speeder and you have one more gear to change = lost speed
The 5 speed ppg is an ace piece of kit and available as a straight cut or helical cut synchro or dog engagement spec.
David on Welcome to the API website
UK/WRX classic boxes tolerate about 300/330 lbft torque
Sti Ra/Sti classics tolerate about 350 to 370 lbft in V3 /V4 V5 V6 specs
To reliably tolerate 380 lbft +
1
Fit a 6 speed box/prop/rear diff for £2000 ish + fitting
2
Fit a ppg gearset and some fresh synchro's for about £3000 + fitting
The 6 speeder is bullet proof and much heavier than a 5 speeder and you have one more gear to change = lost speed
The 5 speed ppg is an ace piece of kit and available as a straight cut or helical cut synchro or dog engagement spec.
David on Welcome to the API website
#6
The Sti's, esp V5 on had additional heat treatment to toughen them up, that is why I went to the Type R for mine.
Remember my stock Sti V3 has run 380 x 370 for 3 years in hill climbing with ZERO problems.
Remember my stock Sti V3 has run 380 x 370 for 3 years in hill climbing with ZERO problems.
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