T56 rebuild

[stevieturbo]

Until it's apart, no sense buying any parts.

It could need none, or lots. The problem could even be clutch related, or as simple as a bad oil choice for the box.

Although crunching into 6th is more unusual.

[SuperVM]

stevieturbo said:

Until it's apart, no sense buying any parts.

It could need none, or lots. The problem could even be clutch related, or as simple as a bad oil choice for the box.

Although crunching into 6th is more unusual.

I thought it may, though not definitely, decrease any waiting time for parts. It doesn't crunch into sixth, it is just difficult to shift into sixth, there is no noise as such.

Wouldn't a bad clutch or bad oil tend to affect all gears, rather than just reverse and sixth?

[stevieturbo]

SuperVM said:

I thought it may, though not definitely, decrease any waiting time for parts. It doesn't crunch into sixth, it is just difficult to shift into sixth, there is no noise as such.

Wouldn't a bad clutch or bad oil tend to affect all gears, rather than just reverse and sixth?

It should be pretty easy to go 5-6 without using the clutch given gear speeds etc.

But yes a clutch issue would be more likely to affect all gears. But 6th and reverse are totally separate too...although in the same section of the box.


Difficult shifting to only 6th could maybe be pads or worn/damaged forks, or perhaps syncro related issue. Reverse is prob just baulk rings...but long term damage there can damage the gear and slider too ( slider can just be flipped around though )

[Phillphill]

sorry to hear your having issues!

The ac worked fine, and had loads replaced by the last owner, new condenser iirc and was gassed the month before you buying it

Never had much of an issue with the reverse, if I rushed it would crunch so always made sure i was stationary.
I remember test driving it and I couldnt get it to crunch into reverse, I found when you put it into reverse as you brought the clutch up (holding the shifter) you would feel it almost move a little further and engage reverse

6th from 5th would take technique, i never liked the shifter and planned to remove it. Taking the shifter out and cleaning it made a big differance as it was covered in so much st before

[Phillphill]

Also chat to BK transmissions in Basingstoke
They are really good, just completely rebuilt a Renault 8 gearbox for me which was surprisingly cheap

[SuperVM]

Phillphill said:

sorry to hear your having issues!

The ac worked fine, and had loads replaced by the last owner, new condenser iirc and was gassed the month before you buying it

Never had much of an issue with the reverse, if I rushed it would crunch so always made sure i was stationary.
I remember test driving it and I couldnt get it to crunch into reverse, I found when you put it into reverse as you brought the clutch up (holding the shifter) you would feel it almost move a little further and engage reverse

6th from 5th would take technique, i never liked the shifter and planned to remove it. Taking the shifter out and cleaning it made a big differance as it was covered in so much st before

Hey Phil, no problem at all mate. If I'd been upset about it, I wouldn't have texted you asking for your cam recommendations, etc. If it has come across that way on this thread, I apologise, tough week with impending house sale is my excuse.

I remember you saying you never liked the shifter and felt it could be causing the issues. I've since heard it is unlikely to be the case, but it is probably worth giving it a try anyway when I have a moment, especially as cleaning it made such a difference for you. Your description of reverse is about what I've found, it took me ages to find the technique, including going into 4th first, but literally the last time I drove the car I tried going very slowly into reverse while lifting the clutch and it was as you described, i.e. there was a tiny little bit of extra movement just as the clutch came up.

The air conditioning is most definitely dead and has never worked in the time I've had the car. The compressor sounds like a bag of marbles in a washing machine, but I consider it pretty much par for the course on the cars I buy these days and am usually surprised when it does work first time! As an example, I've yet to buy a BMW M-car (2 x E36 M3 Evo and 2 x E39 M5) in which the air conditioning worked before I replaced bits. Actually, that's not true, my first E39 M5 smoked from the cooling fan when I tested the air conditioning, so we knocked off the price of a new fan. One day about six months later, before I'd gotten around to fitting the new fan I'd already purchased, I gave the air conditioning a try and everything was fine including the fan, which worked for the rest of the time I had the car.

Just so you don't think I'm a grouch, I am very impressed with how the car drives bar the gearshift issues, you did some very good work with the suspension! I haven't had anything that feels so tight straight away in a while, I'm used to having to replace all sorts of arms and bushes when I get a new car.

[stevieturbo]

Nice article/collection of pics showing the magnum process to an old T56 fitment. Prices are cheaper now though as per the DD link earlier.

http://www.superchevy.com/how-to/ghtp-1207-t56-tra...

[SuperVM]

So, the car is with Monkfish at the moment. Some other issues have come up and I don't feel it is probably going to be worth repairing. I'm having a think of it over this weekend, but if anyone is interested in it, feel free to send me a message.

[MyM8V8]

SuperVM said:

So, the car is with Monkfish at the moment. Some other issues have come up and I don't feel it is probably going to be worth repairing. I'm having a think of it over this weekend, but if anyone is interested in it, feel free to send me a message.

Your account does not have a messaging facility?

[SuperVM]

MyM8V8 said:

SuperVM said:

So, the car is with Monkfish at the moment. Some other issues have come up and I don't feel it is probably going to be worth repairing. I'm having a think of it over this weekend, but if anyone is interested in it, feel free to send me a message.

Your account does not have a messaging facility?

You can click "email me", no?

[rich24v]

rich24v said:

http://www.partsworldperformance.com/t56-transmiss...

I don't know about actual suitability.

They do a good delivery turn around though, I ordered a tr6060 and was delivered
within 24hours.....(have yet to confirm its suitability in my vxr8 !!)

I'd better update.....

The gearbox does not fit.....well it does... kind of, pita to get it onto the block because of
the integral bell housing, the show stopper was that it's overall length is about +25mm,
so everything rearward of the bell mount face is moved back, did'nt realise this until
I tried to connect the prop......(assumption being the mother of fkups!)
Perhaps it might have fitted if I forced it, at worse case you could shorten the prop, gear selector
arm, gear change link bracket, the gearbox rubber mount bracket/ cross member....all possible.

Partsworldperformance are still advertising the box they sold me as suitable for vxr8, but they
are looking into the problem, I'm not expecting much back though.
So, to confirm part numbers:-
My original box id TUET8381A (bolt on bell housing)
Partsworld advertised box TUET10310 (bolt on bell housing)
Delivered partsworld box TUET10860 (Integral bell housing, also has internal oil pump
for cooler which you have to loop connections (not just block off)....or fix up a cooler rad.

For now I fitted a second hand TUET10310 as a temp "buy me time" fix (and a different issue with that one.... )