Outer Limits 4x4 Board

Hi there, I have looked through both the sierra and vitara bible for info, but cant seem to find what I want, so I thought that I would ask you guys:
I took my Holden Drover (G13A, 5 speed) to a transmission specialist today to get an opinion on the state of my gearbox- it's making a loud grinding noise (that get's faster as you build up speed) in every gear except 4th. I am familiar with gearbox problems (I drive a Pajero ) but just wanted to get a second opinion. The guy said that it needed a "full rebuild plus more!" He explained that no only did it need bearings and gear clusters, but also new shafts as well and quoted me from $1200 to $1500, drive in drive out (which seems a tad expensive) and another place offered me a changeover recon gearbox (no transfer) for $695. If possible, I would like to get a taller 5th gear ratio for the box so instead of sitting around 3000rpm at 90kmh, I could maybe sit on 2700-2800rpm. Is this possible? What is the 5th gear ratio in this box? Does the Vitara box have a taller 5th gear or is it the same box in both models? Would it fit? Can anybody recommend a good value-for-money place in Melbourne or near melb that can rebuild my gearbox? I would really apprieciate any info possible. Thanks, Sam

Mate theyre bending you over a table at those prices. If you are mechanically inclined, they are reasonably easy to rebuild yourself, just buy a rebuild kit and go from there. Another option, is to put an ad in the wanted section for a 2nd hand box, or go to a wreckers and get one. Every zook owner i know has a spare one lying around.

Its easy to rebuild just take pictures, and it will take you a day.You can get your rebuild kit from locktup 4x4 .com.au. If i can rebuild one anyone can.

as for taller gears the NT i think has a taller 5th then the WT but i think its only about 500rpm differance or something ... not a whole lot

if you want big changes you will have to get custom gears cut ... and i havnt heard of anyone doing this for a sierra

ofr57 wrote:as for taller gears the NT i think has a taller 5th then the WT but i think its only about 500rpm differance or something ... not a whole lot

if you want big changes you will have to get custom gears cut ... and i havnt heard of anyone doing this for a sierra

How do I know if the gearbox is NT or WT? All I know about my car is that it is a 1985 Holden Drover! In relation to NT and WT gearboxes, what is the difference? Are the transmissions the same in size and appearance?

Lets just say that my gerarbox is WT, can I fit NT gears to the WT box?

Thanks for your advice, I will definitely look up the website mentioned and may even place a wanted ad on this forum.

Sammyboy wrote:
How do I know if the gearbox is NT or WT? All I know about my car is that it is a 1985 Holden Drover!

Your car should have an NT box in it already.

Although I am at a loss as to why on earth you would want to rev under 3000rpm at 100kph as you would struggle to hold 100kph in a stock zook motor at those revs. If you really want less revs the easiest way would be fit bigger tyres...

also if it is a narrow track you could change your C & P to 3.7