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GQ gearbox anyone ever broke one

Posted: Fri Feb 26, 2010 1:24 pm
by brendo4b
Has anone ever broke a gearbox behind a td42 i have one that ive had in a petrol patrol for the last 322000 it was originally my grandfathers and only ever towed w caravan no real hard work i have given it abit of shit since ive had it a few small burnouts and some minor 4x4 i am doing a trip around oz next year and tossing up whether the give her a rebuild or not what are your thoughts are they a good tough box cheers

Posted: Fri Feb 26, 2010 1:49 pm
by stool
Should be fine as they are a very strong box

I have one behind my 7.4L chev with a brass button clutch
and 35" tyres and it still lives after plenty of testing so to speak

Posted: Sat Feb 27, 2010 12:32 am
by gq351
stool wrote:Should be fine as they are a very strong box

I have one behind my 7.4L chev with a brass button clutch
and 35" tyres and it still lives after plenty of testing so to speak
haha yeah they are prety tough i have a 454 too & havent managed to break it yet!!! just diff centres & cv's ... should be ok mate,

Posted: Sat Feb 27, 2010 7:34 am
by RIZZO
will be fine mate, give it some new blood before you go,

toughest box ever, more stronger than Gus

Posted: Sat Feb 27, 2010 8:27 am
by SuperiorEngineering
Seen Many Break, Big HP deisels but.
Robbie Marshall had a colletion of broken gearboxs.
The average TD42 aint going to break one but they are not unbreakable.

here are a couple of vids of the truck


http://www.youtube.com/watch?v=b8PTvZNB ... r_embedded#


http://www.youtube.com/watch?v=X9wDEnrS ... r_embedded

Posted: Sat Feb 27, 2010 9:10 am
by hokey
rebuilding the gearbox won't make it any less likely to break due to power. the stress from being behind a powerful motor adds up over time so that it's likely to break when put under heaps of stress.

we are talkin manual here right?

Posted: Sat Feb 27, 2010 11:34 am
by Josh_GQ
Ive seen more than one shit 5th gear from towing in top gear. My mates ended up been able to only get 3rd, but was just all the bits fromk 5th jamming everythin up

Posted: Sun Feb 28, 2010 2:18 am
by mq_camo
my first gear has shit its self i can only take off in second unless i jam it into first while rolling, got a quote to get it fixed and the stooges want approx 2 grand, i run 35's and 20psi in my gq ute and i dont even really give it a hard time.

Posted: Sun Feb 28, 2010 2:55 pm
by RIZZO
mq_camo wrote:my first gear has shit its self i can only take off in second unless i jam it into first while rolling, got a quote to get it fixed and the stooges want approx 2 grand, i run 35's and 20psi in my gq ute and i dont even really give it a hard time.
crazy rebuildin them mate, go to wreckers get one with decent ks thats been bench tested can get them around 600 mark ready to go , swap over with old one, best way

Posted: Sun Feb 28, 2010 5:38 pm
by 351ciofgrunt
Stripped the synchros off third gear with a 351c and a mate has done the same with a chev.

Besides that they're very strong boxes

Posted: Mon Mar 01, 2010 12:56 am
by sudso
I didnt break mine but would of if I left in much longer. All gears except 4th sounded like a grinder and would pop out of 3rd on decel as well. I have a TD42 with a turbo and 35's so no they're not indestructable. I put a GU box in it about two and a half years ago and it's been fine.