[zukenutter]

squibby wrote:

So if I put a MkII transfer into my MkIII, does the reduction only come into play when in low range, or is it always effective?

30% comes into play in both high and low range.

[gjb977]

So what is the best/easiest way to get 15% reduction? That would be pretty ideal for vvt jimny with 235 Tyres?

[zukenutter]

gjb977 wrote:

So what is the best/easiest way to get 15% reduction? That would be pretty ideal for vvt jimny with 235 Tyres?

If you can find 15% lower diff ratios it would be the easiest way. Option B Non VVT gearbox and Sierra transfer. Don't think any of the VVT transfer kits give a 15% reduction.

[bearlives]

great thread thanks

[gjb977]

zukenutter wrote:

gjb977 wrote:

So what is the best/easiest way to get 15% reduction? That would be pretty ideal for vvt jimny with 235 Tyres?

If you can find 15% lower diff ratios it would be the easiest way. Option B Non VVT gearbox and Sierra transfer. Don't think any of the VVT transfer kits give a 15% reduction.

I wonder what Twisted4x4 are going to do (and when)

[monley]

monkey wrote:

Quote:

If yours is a manual VVT it will have a transfer box ratio of 1:1 in high and 2.002:1 in low. The auto VVT uses a different transfer box that is 1.32:1 in high and 2.643:1 in low, so could be an easy swap and still giving you a good reduction.
The manual car has 4.3:1 diffs and I think they are the same for the auto.

I think using a AUTO t-case from a VVT jimny sounds like a easy path for me now just trying to figure out what sort of reduction it;s going to offer...

I can now confirm this swap works.... 22% reduction in high and 32% in low(from what Brett form suzuki shop told me)...

Also what reduction would i end up with if i had MKIII gearbox and MKI diffs(4.11?), with a sierra transfer? 35% sound about right?

[zukenutter]

monley wrote:

monkey wrote:

Quote:

If yours is a manual VVT it will have a transfer box ratio of 1:1 in high and 2.002:1 in low. The auto VVT uses a different transfer box that is 1.32:1 in high and 2.643:1 in low, so could be an easy swap and still giving you a good reduction.
The manual car has 4.3:1 diffs and I think they are the same for the auto.

I think using a AUTO t-case from a VVT jimny sounds like a easy path for me now just trying to figure out what sort of reduction it;s going to offer...

I can now confirm this swap works.... 22% reduction in high and 32% in low(from what Brett form suzuki shop told me)...

Also what reduction would i end up with if i had MKIII gearbox and MKI diffs(4.11?), with a sierra transfer? 35% sound about right?

Yep, about that I think.

[monley]

zukenutter wrote:

monley wrote:

monkey wrote:

Quote:

If yours is a manual VVT it will have a transfer box ratio of 1:1 in high and 2.002:1 in low. The auto VVT uses a different transfer box that is 1.32:1 in high and 2.643:1 in low, so could be an easy swap and still giving you a good reduction.
The manual car has 4.3:1 diffs and I think they are the same for the auto.

I think using a AUTO t-case from a VVT jimny sounds like a easy path for me now just trying to figure out what sort of reduction it;s going to offer...

I can now confirm this swap works.... 22% reduction in high and 32% in low(from what Brett form suzuki shop told me)...

Also what reduction would i end up with if i had MKIII gearbox and MKI diffs(4.11?), with a sierra transfer? 35% sound about right?

Yep, about that I think.

mhh....might have to go bigger tyre's then

[BertZook]

[monley]

Mr nutter,

How much reduction will i end up with if i out a mark II gear box in with the mark III transfer?

And what jack shaft would i need? Mark III jack shaft or mark II?

[zukenutter]

monkey wrote:

Mr nutter,

How much reduction will i end up with if i out a mark II gear box in with the mark III transfer?

And what jack shaft would i need? Mark III jack shaft or mark II?

It would go the other way, you need to re-read the beginning of this thread for the answers. The other way around is probably the better choice; Mark II gearbox with Mark II Transfer for a 30% reduction. Only thing you'd need is a lengthened Mark II jack shaft and a transfer lever boot from any earlier Jimny.

[Bugsta]

monkey wrote:

monkey wrote:

Quote:

If yours is a manual VVT it will have a transfer box ratio of 1:1 in high and 2.002:1 in low. The auto VVT uses a different transfer box that is 1.32:1 in high and 2.643:1 in low, so could be an easy swap and still giving you a good reduction.
The manual car has 4.3:1 diffs and I think they are the same for the auto.

I think using a AUTO t-case from a VVT jimny sounds like a easy path for me now just trying to figure out what sort of reduction it;s going to offer...

I can now confirm this swap works.... 22% reduction in high and 32% in low(from what Brett form suzuki shop told me)...

Also what reduction would i end up with if i had MKIII gearbox and MKI diffs(4.11?), with a sierra transfer? 35% sound about right?

That doesn't sound right. Those ratios are both 32%. If it wass 22/32, I would have already done it.

[zukenutter]

Bugsta wrote:

monkey wrote:

monkey wrote:

Quote:

If yours is a manual VVT it will have a transfer box ratio of 1:1 in high and 2.002:1 in low. The auto VVT uses a different transfer box that is 1.32:1 in high and 2.643:1 in low, so could be an easy swap and still giving you a good reduction.
The manual car has 4.3:1 diffs and I think they are the same for the auto.

I think using a AUTO t-case from a VVT jimny sounds like a easy path for me now just trying to figure out what sort of reduction it;s going to offer...

I can now confirm this swap works.... 22% reduction in high and 32% in low(from what Brett form suzuki shop told me)...

Also what reduction would i end up with if i had MKIII gearbox and MKI diffs(4.11?), with a sierra transfer? 35% sound about right?

That doesn't sound right. Those ratios are both 32%. If it wass 22/32, I would have already done it.

Well spotted

[Bugsta]

I recall pointing out the same thing in another thread somewhere

[Dylan92]

whats the best way to get gearing back to standard with 30s in a push button t/case in a jimny

[Bugsta]

Dylan92 wrote:

whats the best way to get gearing back to standard with 30s in a push button t/case in a jimny

Dylan, I am contemplating the same thing when I put on 31's. The closest and simplest option I have come up with is a AT VVT case. being 32%/32%. Your revs will be a bit higher in high but I think its manageable.

[bearlives]

Bugsta wrote:

Dylan92 wrote:

whats the best way to get gearing back to standard with 30s in a push button t/case in a jimny

Dylan, I am contemplating the same thing when I put on 31's. The closest and simplest option I have come up with is a AT VVT case. being 32%/32%. Your revs will be a bit higher in high but I think its manageable.

I also want to run 30's with a vvt push button and this seems to much to me. I think the 20% reduction gears would be better..........There must be a better option, all i want is a slight drop in high and crawler gears in low but all options seem to be to expensive. Its freaking ridiculous.

[zukenutter]

Bugsta wrote:

Dylan92 wrote:

whats the best way to get gearing back to standard with 30s in a push button t/case in a jimny

Dylan, I am contemplating the same thing when I put on 31's. The closest and simplest option I have come up with is a AT VVT case. being 32%/32%. Your revs will be a bit higher in high but I think its manageable.

If you never want to drive on the highway again at a reasonable speed. 30s would only need a 15% reduction to achieve "back to standard" gearing.

@ Dylan -- When you say 30s are you talking about 30x9.5 or 235/75

bearlives wrote:

I also want to run 30's with a vvt push button and this seems to much to me. I think the 20% reduction gears would be better..........There must be a better option, all i want is a slight drop in high and crawler gears in low but all options seem to be too expensive. Its freaking ridiculous.

30s with my set-up would still have a small reduction in high but theres no way to gear low down while retaining the high. You could go for a WT Sierra transfer with 416 gears and taller diff ratios and Mark II gearbox. Sadly you're up for bucks no matter which way you go. Easiest option would be 31s with 20% reduction main drive in your existing transfer and then the APIO low reduction.

[bcgal0004]

mark II jimny with mark III diff gears 6% reduction? would be alright with 235/75r15? what your thoughts?

[monley]

bcgal0004 wrote:

mark II jimny with mark III diff gears 6% reduction? would be alright with 235/75r15? what your thoughts?

Not worth it IMO.....

[zukenutter]

monkey wrote:

bcgal0004 wrote:

mark II jimny with mark III diff gears 6% reduction? would be alright with 235/75r15? what your thoughts?

Not worth it IMO.....

x2

215/75R15 yes

[Blakey]

iv got a calculator iv made for speed and rpm for gearing sets including gearbox (but you need to know the actual ratio) to put in it. does metric and imperial tyres and does high and low transfer (if you know the ratio) if anyone wants it. it doesn't have percent change but it can be added easy enough.

[303zuke]

zukenutter wrote:

30s with my set-up would still have a small reduction in high but theres no way to gear low down while retaining the high. You could go for a WT Sierra transfer with 416 gears and taller diff ratios and Mark II gearbox.

What are the options for taller diff ratios for a Mk1 Jimny (4.09 diffs, right?) Will the SJ80 Coily (3.7 ratio) front diff fit the Jimny?

[zooky08]

coilys are 3.9 ratio?

[zukenutter]

I don't know whether the front diff of a coily would fit, hopefully someone who actually knows will chime in.

3.9 would be perfect for me with 4.16 gears.

[shep]

Are trial jimny gears well made? Or would I be better off sourcing auto transfer gears from suzuki?

[zukenutter]

Haven't heard of anyone breaking them

[Bugsta]

Since this thread has been brought to the top again, I might correct some numbers we now know and have been stated in other threads.

The Auto VVT Jimny is actually 27% lower than the Manual case, in Hi and Lo. It is not 32% as suggested in the sales brochure (At least the Aus models anyway). The chain is also 5mm narrower and a few cm longer. Meaning that it is not as strong as the manual.

I still believe a chain tensioner with an external adjustment would be possible.

[zukenutter]

When are you going to sort your gears Bugsta, you've been talking about it for ever. Jimny running at the moment?
Considering you only drive it as a weekend toy you should just throw a Sierra case in behind your current gearbox, you'll have a huge reduction. Just put up with 80km/h highway.

[Bugsta]

Stock box - huge reduction in High yes. Not so much in low.

The plan is for trialjimny gears, but this is pointless with a slipping chain.

I still use it for about town and weekend get aways. Just no low range or towing.