gearbox
Turbo Mini Forums

hello every body(in a comedy dr nick from the simpsons style voice) ive got a freshly rebuilt 1340 turbo engine (i think its that) with a -31 actuator, big frontera intercooler, ported n polished head, about a mm skimmed from the piston tops, running about 15psi, is the gearbox goin to go boom i know its in good condition, wot on the cheap can i do to stop it from going tits up
thanks ben.

In order of importance-

Rebuilt diff at very least, preferably a cross-pin item

Straight cut drops are the way to go, although making sure your drop gears are PROPERLY shimmed will help a bit.

Are you 100% sure it is in good condition? Do you know for certain or is it just something you have been told? You need to MAKE SURE, just remember how much damage can result from a gearbox failure.

Drive it gently?

Seriously - don't blast/crash through the gears, remember that the stresses in the gearbox reduce as you go up the gears (4th is a direct-drive, so very strong) and listen for problems before they happen.

Quality oils will help of course.

Have you got a mini on the road ben?

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

hiya will, at the moment my mini is in the garage, spraying it and putting the engine in etc. why do u ask? ive got 3 gearboxes to choose from. according to my machinicking mate 1 is in very good condition. i dont really no wot to look for to be honest. also i have a mate whos selling straight cut drop gears. how much are they worth. and will that give it the annoying whining noise?

It is good condition from looking over it, or good condition as it has been stripped, measured, checked, and then reassembled?

If you are planning to run 15+psi through a turbo motor, the standard gearbox really does need to be in top order.

Straight cut drop gears are in the region of £200 new, so base your second hand price on that. Yes they will whine, but most of us love the noise that they make!

thanks for the advice guys ill get on to him bout selling me the straight cuts, that whineing noise is good. but we followed. a mini down to mini in the park with them, n the guy was offering people to drive his car for him, ha ha

I only asked as I keep seeing minis in Congleton, just wondered if any were you. Obviously not.

Where is Halfords BTW, I'll come and find you one day.

Wil

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

ill give the gearbox 6 months max before something brakes.

but the drops will help no end though.

good diff pin genuine are best if you can get one but a must is to replace the diff pin roll pin this is one of the week points in the diff ass.

always looking for them bigger bunches of bannanas

hiya. my mini has been off the road for about 6 months now will, halfords is just off the mcdonalds roundabout as if ur going up2 tesco carry on past tesco and ull c it. im always there its as if i never get away from the place. just look for a blue nova on the car park and ill be there if it is. it wud be nice to have a chat 1day but im off for a week now go bk on the 14th. be nice to speek to u, ben