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Regearing of VVT Push button transfer gearbox

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22 May 2017 13:05 #181415 by yakuza
Does anybody know if it is possible to put the low gears from a 4AT transfer box into a 5MT transfer box without interfering with the high range?
I have come across a transfer box from a automatic jimny and would like to take the 2.6 low gear from the auto transfer and put it inside my manual transfer if possible. Both are push button operated.

I want to keep the gears as is in the high range, but lower the low range only.
I have 235/75-15 wheels and M16 engine so i see no need to get higher revs on the road. It performs great as is.


Norway 2005 Jimny M16A VVT, 235 BFG MT, 2" Trailmaster, ARB rear lck, 17%/87% high/low gears.
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22 May 2017 13:48 - 22 May 2017 14:07 #181416 by yakuza
www.auszookers.com/forum/viewtopic.php?f=17&t=49478

Aha!
Does look like it is no point in it as the counter gears pos15 seems to be the same on manual and auto transfer boxes.
The difference is probably in the other gears of the chain link as the difference between high and low is the same on both cases..

Can anyone confirm?

Or does anyone know where to find the figures for the gears as to how many teeth on each wheel inside?

Bummer, seems to be a waste to buy this box if i don't go to 31" tires..

Norway 2005 Jimny M16A VVT, 235 BFG MT, 2" Trailmaster, ARB rear lck, 17%/87% high/low gears.
Last edit: 22 May 2017 14:07 by yakuza.

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22 May 2017 17:40 #181428 by Riccy
This is interesting.

It is possible to buy gearsets for the push-button box i think, but all will lower it in high range also.

with the M16 and 235's I find the same, that its fine in high box with that combination on the road, but needs to be lower in low-box.

I have the same diffs and t-box that S200KYS is using on his 'regearing a daily driver' post and will be fitting them, likley with slightly larger tyres than the 235/75r15 currently on eventually, this corrects the gearing nicely but is still slightly under the ideal in high box.

J999 MNY, ULYSSES M18 VVT with ITB's Dyno tested at 130hp

Pickup/tipper, R7me gearbox & 6.4 Rocklobster, 31" Toyo MT, 2x ARB air locker 3.9 diffs in braced axles, 6" total lift, Floating rear conversion, Raptor painted, CB, Recaro's, Caged, etc, etc...

www.youtube.com/user/riclemus

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23 May 2017 13:04 - 23 May 2017 13:09 #181453 by yakuza

Riccy wrote: This is interesting.

It is possible to buy gearsets for the push-button box i think, but all will lower it in high range also.
.

Not completely correct, the link above directs to instructions on how to change low gear set only.
Low gear only set can be bought at jimnybits. But it is expensive.

Riccy wrote: with the M16 and 235's I find the same, that its fine in high box with that combination on the road, but needs to be lower in low-box.

I have the same diffs and t-box that S200KYS is using on his 'regearing a daily driver' post and will be fitting them, likley with slightly larger tyres than the 235/75r15 currently on eventually, this corrects the gearing nicely but is still slightly under the ideal in high box.


For me, that operation is a bit more than i would like to do at this point. This is my daily driver.
And as you say, with the M16 the car performs very good with 235 and the original high range.
The point for me is that for offroading you may change diffs and all, but it will not matter until you get bigger difference between high and low range for a usable offroader to pass as your daily driver..

www.jimnybits.com/jimny/drivetrain/jimny...fer-box-gearset.html
3.7:1 low range. Should be very good. remeber to strenghten case and mounts when doing this as the torque will increase a lot.
700£ plus freight and 25% norwegian sales/import tax.. I could get the used auto transfer for ~300£
Guessing i will watch out how your GBP performs compared to our NOK with brexit and Euro and all...
Prices for foreign car parts vary a lot with currencies.

Norway 2005 Jimny M16A VVT, 235 BFG MT, 2" Trailmaster, ARB rear lck, 17%/87% high/low gears.
Last edit: 23 May 2017 13:09 by yakuza.

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23 May 2017 17:06 #181457 by Riccy
I have a rocklobster box in the shed which will probably end up in there eventually for the greater difference between low and high box. its 1.5 in high and 4.16 in low so should be ideal.

Once ive got the older stick jimny box in its pretty easy to swap between that and the rocklobster box if a big outing is planned off-road, around a 1hr job to swap them. The standard stick box is probably low enough for most stuff i do anyway.

The auto transfer would push you to larger tyres or different diff gearing unless you plan to take it apart and make a hybrid out of it and yours maybe?

J999 MNY, ULYSSES M18 VVT with ITB's Dyno tested at 130hp

Pickup/tipper, R7me gearbox & 6.4 Rocklobster, 31" Toyo MT, 2x ARB air locker 3.9 diffs in braced axles, 6" total lift, Floating rear conversion, Raptor painted, CB, Recaro's, Caged, etc, etc...

www.youtube.com/user/riclemus

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24 May 2017 05:40 - 24 May 2017 05:45 #181493 by yakuza

Riccy wrote: The auto transfer would push you to larger tyres or different diff gearing unless you plan to take it apart and make a hybrid out of it and yours maybe?


It is not possible to make a hybrid of these boxes as i suspect there is no difference in the parts in the low gear set.
Please see the second post in this thread.

The difference is in the high range in the belt drive only. (i think so, would like to have this confirmed)
You can see this from the similar offset between the high and low range in both transfer boxes.

I already told the guy selling the auto-transfer box that i'm not buying. He was understanding thankfully.

Norway 2005 Jimny M16A VVT, 235 BFG MT, 2" Trailmaster, ARB rear lck, 17%/87% high/low gears.
Last edit: 24 May 2017 05:45 by yakuza.

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