how many people have had their gearboxes rebuilt ?

and was it auto or manual ?

 

if used car guides are warning people about shredded manual gearboxes, how common is it ?

 

i only know 1 person that has had a manual gearbox rebuild, compared to a heck of a lot of autos....

 

granted, that some of them would be imported ones with smaller oil coolers, so specify that as well

 

manual rebuilt ? (uk and import ?)

uk auto rebuilt ?

import auto rebuilt ?

 

curious...

This could get interesting Also how many people have converted from auto to manual???

 

CheerZ,

 

Andy

import auto rebuilt

 

Happened not that long after I bought the car and before I'd learnt a great deal about it. Symptoms were no drive, so it was probably either an oil pump problem or a blocked filter. I had the fast road rebuild (uprated line pressures) and it made quite a difference to the smoothnes and driveability of the car. Also had a 'proper' oil-cooler installed at the same time. Car had done about 33K miles at the time. It was also about 2 weeks after I had the boost upgrade done.

 

[This message has been edited by AndyP (edited 29-10-2001).]

Craig,

 

I have a manual with 95k miles 92 J'.

 

Not had a rebuild, but getting noise selecting lower gears, mainly 1st to 2nd.

 

Maybe worn selectors/syncros?

 

I'm going to try a cheap option first,

ie changing the gearbox oil.

 

I think its on the way out as after motorway

criusing at 80/90 all the gears feel pretty stiff.

 

Glenn.

Had my auto import rebuilt. This was at 350ish bhp and after fitting an HKS ALC.

 

Dave

I must be doing well.

60K miles, 450bhp with a HKS ALC on a Jap Auto.

Maybe I shouldn't tempt fate and just keep my mouth shut!

I now understand that something inside the box breaks up (down?) due to the excessive heat and consquently blocks the oil filter and therefore no drive. So, get a damn great oil cooler for the autobox and give up on that poxy thing that is attached to the main rad and probably keeps it hot rather than aids cooling. We checked mine after a gentle 20 drive and even with the big cooler the oil was over 77 deg C. On a hot day with no cooler and a bit of a thrashing it would be over 100 dec C

My first Manual Zed had UK135000 miles on it and it had the crunchy 4th gear problem, but I think that MT-90 would have sorted that out. But it was the original box.

My current Manual Zed has UK/JAP80000 miles on it and its perfect *except* at 7000rpm into fourth and there is a slight crunch, MT-90 going in v.soon.

So no rebuild but slight problems. I think both these fourth gear synchro problems are quite common but the boxes other than that are/were fine

No experience of Autos but reading through Ray Huttons book 300zx Enthusiasts companion seems there is ALOT of complicated stuff going on in them there autos.

 

------------------

 

Glen

:)

Jap, auto, 45k, no rebuild.. needs a flush, and you can 'feel' that the box isn't quite a smooth as it probably once was.. it'll need doing, long term.. (another 20k maybe)

The forth gear crunch is quite common i believe, although if you change gears abit slower it wont do that.

The gearbox noise you get may be little bearing (cheap to fix) or noise could be the rubber boot come of and as you put in iether 2nd or 4th gear it opens up and you hear gearbox.

 

UK spec Manual, 127,000 miles no problem.

Mines a UK 92 auto. 119k Just had a feel at me oil coolers (as you do) after a fast (well 90ish, well slow really) run up M6. Engine oil cooler stone cold. Autobox oil cooler just warm. So seems to say needs cooling even in normal running whereas engine oil cooler only ever got warm with enthusiastic driving in mid summer!

Willie

At last, something I can join in with on the Tech. front!

 

I agree with me chummly warner on this one...Mr. P! My transmission tunnel...ohhh errrrrr Mrs...used to get well toastie!

 

Not good!

 

So I will defo be going down the super cooler road aswell!

 

Oh, and by the way! Has anyone worked out how much extra you manual guys pay over the life of your cars in clutches etc.??? Nuff said!

WilleO,

Have you got a separate oil cooler for the gearbox ? I have and mine gets bloody hot !

 

If you have the standard setup then as far as I can tell all that does is use the water temp to keep the gearbox oil hot. There's bugger all cooling going on there !

 

According to my Techtom the water temp is typcally 82-84 deg C, which is quite reasonable I think.

Andy I have an SE oil cooler on my autobox and it stays cool.

 

------------------

Auto rebuild about 18 months ago. It still plays up now and then though, slips out of O/D now and then and I get the occassional snappy change and low speed.

 

 

Had my auto rebuilt.

Have an additional oil cooler intalled (behind the radiator) but it's not enough

for tough track driving.

I will install another cooler in front of all the radiators.

 

Maciej

Iain,

I have an SE cooler too and it gets hot. Pete measured the temp with his clever infared probe and after a 20mile dawdle through Chelmsford etc. it was over 80 dec C (can't remember the exact figure)