stevie1982

iTrader: (16)

ok we are aware that it is torque that kills a gerabox not bhp, but at what point have they let go.
i run a 99uk turbo and want o run more power but i do not want to kill the box so trying to find out a figure which they boxes seem to be happy at, so thought i would ask to try and gauge it,

so if anyone who has replaced a gearbox at some point due to it letting go or just decided to change to a 6 speed or PPG, can you also add in a post for how many miles did it hold out for

Tidgy

i blew mine (my00) after 80k, how long they last depends on a few things, how much power the car has, how the car is driven, how smoothly the gearchanges are done etc etc

6 speed changes the ratios, some folks dont mind that some hate it (mate had one and dispised it, always seemed to not have the ratio he wanted when driving).

i went down the stright cut ppg box, love the sound, but also had a uk 5th put in for moptorway driving

stevie1982

iTrader: (16)

tidgy how much power was yours runnign when it let go? and for how long?

Tidgy

about 260bhp and 280 ftlb. however i was giving it death round the isle of mann at the time. i think i prob missed a gearchange adn that was enough to see it off.

its not outright power that tends to kill thenm its shock loading

stevie1982

iTrader: (16)

really though tit would of been more due to power,

anyone got any common idea on figure that a uk box can hold

steve

Tidgy

350ftlb is suposedly the limit but once you get there its not gonna take much to mash it, 1 missed gear at the wrong time and your could kill it

dogpole

I was running 280/280 ish when i stripped all the teeth off 2nd.

Dropped down to 2nd to take a roundabout..... bang, crunch etc etc


Also killed reverse and the clutch trying to get it on the scoobyclinic flat bed truck.

dogpole

since then, about 3 years ago i've been running 300/300'ish on a recon box, semi race clutch and lightened flywheel no probs.

stevie1982

iTrader: (16)

thats about what i am running in min eat the minute 320/303 but want more!!!

so was looking to get a vf35 or similar fitted may be an 18g but not too sure if the box will hold out.

thing is if teh box goes i will go for a 6 speed or PPG so at that point might as well go for a bigger turbo too but would rather spend money fitting the vf35 and mapping as if teh box packs up it woul dof been a waste of time.

but dont want to spend taht kind of money on a gearbox but fancy a little more out of the car

hit ad miss option i think i may be lucky or may not

crossed fingers i think

steve

Tidgy

if you go for a vf35 then you'll be at the limit of the engine anyway, to go higher your gonna need a rebuild

stevie1982

iTrader: (16)

have a 2004 uk wrx engine been informed by a few people in the business thet the engine is good for 380bhp so was thining of a vf35 or at best a 18g to make the most of the engine

what tourqe with supporting mods does a vf35 and a tdo5-18g make?

steve