Reduction Gears

[Ben-e-boy]

I was not suggesting Diff gears would be comparable to transfer gears by any means though Bene. As per your maths there is a massive difference.

So the big question is How Much reduction does Kat really need. That's the point I am making I suppose. Winnie stated he can go down Billy goats with hardly any braking. The odd tap and that's enough, low first holds well. I bet he has 4.1 diff gears and it gets the job done.

If Kat has 3.9s and is chasing her brakes down the same hill then she may really only need a sublte change to achieve her aim. Going to 4.3s will give her what she is chasing. No it still won't be as low as the 60 but should crawl pretty well down Billy Goats. The bonus would be the extra torque in hi range for when towing.

If you can pick up a pair of 4.3s for $600 or so and Steve throws them in for the win I think your next trip up and down Billy Goats would be very different.

That took me over an hour to write that post so it wasnt really a repky for anything recent.. For reduction gears the 43% will be basically on par with a cruiser.

As for diff gears just get the equivelent of a stock final drive ratio with the bigger tyres. So 3.9 stock with 33s just take it up th 4.11

[MudRunnerTD]

That took me over an hour to write that post so it wasnt really a repky for anything recent.. For reduction gears the 43% will be basically on par with a cruiser.

As for diff gears just get the equivelent of a stock final drive ratio with the bigger tyres. So 3.9 stock with 33s just take it up th 4.11

Bhahahahahahahahah. I thought you talked like that all the time!!!

[Winnie]

Bhahahahahahahahah. I thought you talked like that all the time!!!

He just thinks you're a knob and you don't know what you're talking about =)

[katwoman]

Well Kat, it's settled. Swap out your diff ratios and get a set of reduction gears, win win =)

I've got no idea what diff ratios I have? Stock 93 TD42 manual gears whatever they are

Good-O..... I'll add it to the list then, shall I ?? There goes my new lawn mower.

[BigRAWesty]

Katwomen are you running a petrol?
If so then yea you will have less engine breaking compared to a diesel, but again the Toyota have a good gear ratio setup so if your compairing a gu petrol to a 80 series diesel you'll loose everytime when riding engine down hills.

Imo if your running larger tyres do the diff gears. It'll return the car setup back to close to stock ratios.
If your running stock tyres and want a bit more then look at your low range reduction gears.

But in saying that if you have to touch the break it's no big deal. Just plan when, don't ride them and be gentle.

So now that we've confused the shoit out of you. What's your thoughts lol

[Winnie]

Katwomen are you running a petrol? If so then yea you will have less engine breaking compared to a diesel, but again the Toyota have a good gear ratio setup so if your compairing a gu petrol to a 80 series diesel you'll loose everytime when riding engine down hills. Imo if your running larger tyres do the diff gears. It'll return the car setup back to close to stock ratios. If your running stock tyres and want a bit more then look at your low range reduction gears. But in saying that if you have to touch the break it's no big deal. Just plan when, don't ride them and be gentle. So now that we've confused the shoit out of you. What's your thoughts lol

she has an almighty TD42 Patrol and is comparing to a 60 series diesel...

[katwoman]

Katwomen are you running a petrol?
If so then yea you will have less engine breaking compared to a diesel, but again the Toyota have a good gear ratio setup so if your compairing a gu petrol to a 80 series diesel you'll loose everytime when riding engine down hills.

Imo if your running larger tyres do the diff gears. It'll return the car setup back to close to stock ratios.
If your running stock tyres and want a bit more then look at your low range reduction gears.

But in saying that if you have to touch the break it's no big deal. Just plan when, don't ride them and be gentle.

So now that we've confused the shoit out of you. What's your thoughts lol

Thanks for that. I kinda know the basics as I had a petrol auto 4.5 before I bought the 'queen' of patrols. So, I just really wanted to know the info for my TD42, as Winnie so kindly stated.
I still have some people I need to speak to and check out what diff ratios I have, so I'll mull over it until the new year. Funds this time of year wouldnt let me make a decision any way.

[jay see]

After the Tallarook drive I've discovered how sh!t the low range is (4.5 auto). Having owned a diesel Toyota again auto, the low range is much better. It would have to be 1/2 the speed of the patrol, so the 43% reducing gears are probably the closest to it.
Dame another thing to add to the list.

Has anyone changed theirs. Is it just a straight swap one out one in or is there more to it.

The patrol is too fast and dangerous going down hills, at lest with the Toyota you can click 2nd gear if its not fast enough.

Marks have them for $1350 will have to wait and see how good the tax man will be next year.

[Drewboyaus]

After the Tallarook drive I've discovered how sh!t the low range is (4.5 auto). Having owned a diesel Toyota again auto, the low range is much better. It would have to be 1/2 the speed of the patrol, so the 43% reducing gears are probably the closest to it. Dame another thing to add to the list. Has anyone changed theirs. Is it just a straight swap one out one in or is there more to it. The patrol is too fast and dangerous going down hills, at lest with the Toyota you can click 2nd gear if its not fast enough. Marks have them for $1350 will have to wait and see how good the tax man will be next year.

There is a technique for "driving through the brakes" that all auto drivers should learn if you don't already know it. Can descend almost anything without drama. I would also consider a torque converter lockout (in an auto) before reduction gears otherwise you still won't get the direct drive you need to take advantage of the reduction gears.

Sent from my iPhone using Forum Runner

[Agronaught]

After the Tallarook drive I've discovered how sh!t the low range is (4.5 auto). Having owned a diesel Toyota again auto, the low range is much better. It would have to be 1/2 the speed of the patrol, so the 43% reducing gears are probably the closest to it.
Dame another thing to add to the list.

Has anyone changed theirs. Is it just a straight swap one out one in or is there more to it.

The patrol is too fast and dangerous going down hills, at lest with the Toyota you can click 2nd gear if its not fast enough.

Marks have them for $1350 will have to wait and see how good the tax man will be next year.

Looks like there is a little case modification needed for the reduction gears, but I'll probably head down this path as well as the low range isn't really low enough IMHO. Its getting a little stiff on the small lever anyway so probably time for a transfer case rebuild.