Gearbox problems any views welcome

[trd-drifting]

Gearbox problems once again… and suprafest is in 2 weeks :’(

I am running a w58 behind my 1jz. Have a 4 puck clutch etc… and is stock but 255rwkw apparently w58s can hold a lot more power than that stock. I have done the bearings on the lay shaft etc… at start of the year suspected bent lay shaft as replaced bearings and the bearings failed again… brought another w58 of an importer and it seems that the bearings have gone towards the back of the gearbox I haven’t pulled apart or off car yet so cannot say what bearings are stuffed. About a week before (not sure of the proper name) but the nut in the centre of the 2 piece driveshaft came loose and came off which holds on the hanger bearing through the spline. I have not touched that nut for over 2 and half years... I limped it home slowly about 15kms as it did not seem too bad. Pulled off, did back up etc... Replaced stuffed driveshaft bolts then about 200kms later as I was being a bit stupid in it I started to hear a knocking noise in the gearbox.

Just wanting people’s opinions would this have been a result of the pressure the drive shaft would have put on it when nut came off?
I am using Castrol VMX gearbox oil should I change to something better and what?
Would have bent something inside but not big enough to see it is bent and if I replace bearings again will they fail or who could I get to check out in Hamilton once apart…?

Any opinions would be appreciated I will upgrade to an r154 before end of the year.

Josh

[matt dunn]

Is it a factory bellhousing?

And is it a solid centre or sprung clutch?

[gepsk8]

something sounds bent or not alinged up propably

[blackmk3]

Ive killed multiple bearings in my w series gearboxes, people "say" they take lots of power, but im running 180rwkw and it died, in reality there 20year old gearboxes made for cars with less power and stock clutches

For a clunking rattling noise i would put my money on another bearing going

I run VMX seems ok

Bummer about suprafest im going , hopefully you can sort it..

[barryogen]

The W5x series was behind the 3sge originally wasn't it?

Any reason why people don't use the 6spd from an Altezza?

Not as strong? or too costly?

[Mr.Phreak]

The W5x series was behind the 3sge originally wasn't it?

Any reason why people don't use the 6spd from an Altezza?

Not as strong? or too costly?

You might want to have a quick read of http://en.wikipedia.org/wiki/Toyota_W_transmission

[strx7]

The W5x series was behind the 3sge originally wasn't it?

Any reason why people don't use the 6spd from an Altezza?

Not as strong? or too costly?

bellhousing is all part of the front casing unlike W style boxes.


A lot of what kills boxes is to do with HOW people change gears in them

[trd-drifting]

Is it a factory bellhousing?

And is it a solid centre or sprung clutch?

Yes it is a factory 2jzge bell housing to w series gearbox as for clutch it is a 4 puk spring clutch, (not a solid centre) with a 2600 lbd pressure plate.
for things not to be lined up correctly the gearbox that has just done a bearing is a import and appears never to been opened in this country..
I have had it sugested to me that it could be my drive shaft out of ballance but you would notice that just driving down the road wouldnt you...?

I guess the box does get a bit of a hiding would it deffintly be worth the upgrade to a r154, or what else can i do to prevent this from happening again... what do other people do.. besides be nice to it.

Does everyone recommend Castrol vmx I have heard a lot about redline oils what are they like where can I buy from in Hamilton or nationally...

[blackmk3]

[quote="trd-drifting"][
I have had it sugested to me that it could be my drive shaft out of ballance but you would notice that just driving down the road wouldnt you...?quote]

If you drive shaft was out of balance you wouldnt hear a rattling in the gearbox it would shake and shudder under the car

When you replaced the bearings how did you put them on? i made the mistake of using a punch on mine, they wernt very tight and only took a few carefull knocks and they were in place

However the bearing lasted about 50kms before eating itself, spoke to a engineer and he was saying to never use a punch on a roller bearing. so ive got it all in bits now getting a new bearing fitted, we are going to "heat" it on this time, my guess would be pulling the box out and inspecting see if yours has done the same

If you need a hand or something before suprafest give us a shout 027 405 9662

[trd-drifting]

When you replaced the bearings how did you put them on? i made the mistake of using a punch on mine, they wernt very tight and only took a few carefull knocks and they were in place

I didnt put them on but that gearbox is sitting in the corner of the garage i havnt had the chance to open it again... but i had a friends dad who has been a mechanic who put them on. The gearbox that has just done them is fresh of a importer so i have 2 w58s that have done bearings at the moment, but depending what i find tomorrow when i open it and if it is just bearings i will take to work monday and put on there as we replace bearings all the time on motors and pumps etc... so i cant go wrong i hope.. at this stage i doubt i will be going to supra fest but are you taking your supra up or are you saying your gbox is in bits to..

[postfach]

I ran redline MT-90 in my W58, seems to have looked after the box quite well as I've never had any trouble from it and I've put it through a fair bit of abuse. In saying that, I was also only running a factory clutch plate with a slightly uprated cover.

Last time I changed the oil in it I used VMX because I was low on cash and I wanted fresh oil in for a track day, when I drained it on friday there seemed to be more brass from the synchros around the drain plug than when I had used the redline. Whether or not that relates to the oil, or a change in my driving style that I haven't noticed, I don't know.

[mjrstar]

I'm just trying to picture this in my head, but does the input shaft of the gerarbox solt in to a hole in the crank? if so maybe this isn't running true which would put a side loading on the input shaft bearing.

I run a w series box behind my 245kw 1g in the starlet and it seems to be holding up fine. but i don't have the need to do clutch kicks etc.. so i am pretty nice to the gearbox, even at the track...

[MRDRFT]

i use the VMX oil in my supra,i have a w57 in my drift car,havent had any problems with it yet,i have blowen up a w57 once when i first got the car but not since i used the vmx oil,seems to be fine in my gearbox and thats behind a 1jz with 210kw atw.and gets a fair bit of abuse.i do have a w58 sitting in the garage incase i do pop one tho haha

[blackmk3]

so i cant go wrong i hope.. at this stage i doubt i will be going to supra fest but are you taking your supra up or are you saying your gbox is in bits to..

Yeah mines all going, replaced the faulty bearing and put the box back in, ill be going if i get a WOF tommorow

Goodluck with the bearing replacement today!