When Changing Your Clutch Do You Need To Drain The Gear Box?

[jasont82]

hey guys

4th gear is crunching a lil so im gonna change the gear box oil but an hoping to get a clutch in the next few months. Does the gear box oil have anything to do with the clutch? should i wait to change the oil?

[rukus]

hey guys

4th gear is crunching a lil so im gonna change the gear box oil but an hoping to get a clutch in the next few months. Does the gear box oil have anything to do with the clutch? should i wait to change the oil?

hmm

not 100% on a gtst box, but i know in a 32 gtr box u dont have have to drain the oil when u change ur clutch

[Ryanrb25]

no clutch is seperate to box, box contains its own oil and is completely sealed except for a beather. The clutch can be change without oil change. but why not do it anyways while its out

[jvs007]

but i thought u had to pull the drive shaft outof the gearbox and then pull the gearbox out to get to the clutch??

wudnt dat mean the oil in the box wud leak out once u tilt it out ?

[saliya]

You don't _have_ to. If you keep the box shut and are careful of where the stick comes out, no.

The clutch section and the 'box' section are completely separate.

That being said; most boxes are full of crap. And I've never dropped a GTR box without dropping the

fluids first. Does not hurt to drop the oil and look at what's happening.

If you find bits of metal, be scared (replacement of stuff is often expensive).

If you have a problem with synchro you _can_ get a bit more life out of it with oil (apparently); but the ultimate

solution is to fix the problem (change the worn synchros).

Regards,

Saliya

[HRthirtyone]

dude, if you dont drop the oil out, when you drop the tailshaft you will get GEAR OIL everywhere, and that stuff smells BAD.

drain it. or you will drain half of it on the ground anyway.

cheers,

[RB30-POWER]

Unless you have a proper sealing cap or spare yoke to go into the box when you remove it your best to drop the oil first for reasons mentioned above already.

[jasont82]

thanks for the replys fellas

i changed it anyway. i wont be changing the clutch anyway it will be my mechanic but he can always drain it into a clean container and put it back in anyways. that stuff aint cheap

[RB30-POWER]

mechanic should have a universal gearbox cap to plug in the end of the box, so he will not lose any.

[nuganen]

If you have a problem with synchro you _can_ get a bit more life out of it with oil (apparently); but the ultimate

solution is to fix the problem (change the worn synchros).

Regards,

Saliya

How much would it cost to change the synchros and is it a hard job to do? or should take it to a professional to do this?