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| Jimny reduction gears https://auszookers.com/forum/viewtopic.php?f=5&t=39874 |
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| Author: | macguyverjimny [ Tue Mar 26, 2013 11:46 pm ] |
| Post subject: | Jimny reduction gears |
Hi guys. Do you think it will be possible to only install the lowrange set of gears and leave the high range as it is? Here are some drawings. The guyas from trailjimny said that you need to adjust both high and low range by the same amount. Can someone shed a little light on if this is possible? Also will gearing the front and rear diffs differently be a must more costing process in relations with a 27 % reduction @650 euros? My jimny is a 2009 vvt 1.3 manual.   
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| Author: | Gwagensteve [ Wed Mar 27, 2013 5:55 am ] |
| Post subject: | Re: Jimny reduction gears |
APIO in Japan sell replacement planetaries which only lower low range. Steve |
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| Author: | macguyverjimny [ Wed Mar 27, 2013 7:20 am ] |
| Post subject: | Re: Jimny reduction gears |
any idea what the pricing is relative to the reduction sets from trail jimny ? |
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| Author: | macguyverjimny [ Wed Mar 27, 2013 7:58 am ] |
| Post subject: | Re: Jimny reduction gears |
steve  can you send me a link to apio's website where i can find that planataries?
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| Author: | Gwagensteve [ Wed Mar 27, 2013 8:53 am ] |
| Post subject: | Re: Jimny reduction gears |
Don't have it, sorry. Google? |
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| Author: | 303zuke [ Wed Mar 27, 2013 9:42 am ] |
| Post subject: | Re: Jimny reduction gears |
The reason that the Trial Jimny gears affect High and Low equally by the same percentage is that they replace part No1 and part No12 in your first diagram. As far as finding APIO, why not read the threads on AUszookers about Jimny Reduction, hey?: In THIS THREAD I posted the link to the APIO site and the price is still 192,000 yen. Back then, the exchange rate made that AU$2400, but today the conversion is only AU$1950. The APIO set replaces the whole Planetary gear set, so only reduces Low range by 58%. You have to send them your old planetary gears, and they fit new gears to them and send them back to you, so also allow for postage in both directions on top of that price. |
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| Author: | macguyverjimny [ Wed Mar 27, 2013 5:42 pm ] |
| Post subject: | Re: Jimny reduction gears |
i have done quite a bit of research on the gearing, finding a sj 410 or a sj 430 transferbox is also going to cost me , and then i need some flances and propshafts, and then i will have a really high revs on 120 km/h with the higer high range ratio, i was looking at trail jimny's 27% gearset, but then i must rather try to get Something done with my front and rear diff ratios, i am looking for the cheapest option to my gearing problem , but i doubt its ever going to be cheap. |
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| Author: | sideways [ Wed Mar 27, 2013 5:55 pm ] |
| Post subject: | Re: Jimny reduction gears |
Custom transfer gears will cost more than all your other gearing options combined. |
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| Author: | macguyverjimny [ Wed Mar 27, 2013 6:52 pm ] |
| Post subject: | Re: Jimny reduction gears |
will it be wize to put the old jimnys diffs into a vvt 's jimny? like say a 2001 models diff gears into a vvt? what would the reduction be? the vvt diff ratio is 1:4.30 and the old jimny's diff ratio will be 1:4.090 my low range is at 1:2002 and my high range is at 1:1001 |
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| Author: | atari4x4 [ Wed Mar 27, 2013 7:02 pm ] |
| Post subject: | Re: Jimny reduction gears |
that would make it worse |
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| Author: | zukenutter [ Wed Mar 27, 2013 8:44 pm ] |
| Post subject: | Re: Jimny reduction gears |
The cheapest way to lower a Vvt Jimny, high and low, by 25% is to swap your electric transfer for an earlier model stick shift transfer. 1x transfer = $200 1x transfer boot = $30 1x shortened Vvt intermediate shaft = $300 Swapping to earlier HIGHER ratio diffs combined with the above will give you a drop around 21% but will add a fair bit more cost, although there'd probable be plenty of guys willing to swap to achieve a 4% drop on their early Jimny. |
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| Author: | macguyverjimny [ Wed Mar 27, 2013 9:23 pm ] |
| Post subject: | Re: Jimny reduction gears |
thank you How much will the stick shift transfer case reduce my high and low range? Thank you , and sorry for all the ignorance, |
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| Author: | zukenutter [ Wed Mar 27, 2013 9:43 pm ] |
| Post subject: | Re: Jimny reduction gears |
Roughly 25%, more or less, in high and low. I don't know of anyone who's done this yet so only basing it on my own search for a gear fix. |
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| Author: | BertZook [ Wed Mar 27, 2013 10:53 pm ] |
| Post subject: | Re: Jimny reduction gears |
better question is how big are your tyres? or planing to run? |
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| Author: | Bugsta [ Thu Mar 28, 2013 8:55 pm ] |
| Post subject: | Re: Jimny reduction gears |
According to the data I have, and every Jimny spec sheet I have found on the net, the older Jimny transfer cases were all H=1:1.32 and L=1:2.145... Giving a 32% reduction in high and 7% reduction in low. So on 29's, your highway revs are huge and only a quarter that difference for offroad. Whereas, an auto VVT box is 27% higher ratio in both. Only problem is, the auto case chain is 5mm narrower than the manual case. |
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| Author: | 303zuke [ Thu Mar 28, 2013 9:17 pm ] |
| Post subject: | Re: Jimny reduction gears |
Bugsta wrote: According to the data I have, and every Jimny spec sheet I have found on the net, the older Jimny transfer cases were all H=1:1.32 and L=1:2.145... Giving a 32% reduction in high and 7% reduction in low. So on 29's, your highway revs are huge and only a quarter that difference for offroad. Whereas, an auto VVT box is 27% LOWER ratio in both. Only problem is, the auto case chain is 5mm narrower than the manual case. Fixed. 27% reduction. |
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| Author: | zukenutter [ Thu Mar 28, 2013 9:44 pm ] |
| Post subject: | Re: Jimny reduction gears |
I may be wrong but those reductions seem a bit out. |
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| Author: | zukenutter [ Fri Mar 29, 2013 6:20 am ] |
| Post subject: | Re: Jimny reduction gears |
Yep, If you did the swap the other way around, e.g. put a VVT transfer into a NON VVT Jimny it would be 32% higher... argh! When you swap a NON VVT transfer into a VVT Jimny you achieve a 24.25% reduction. The low range is a 7% reduction as stated by Bugsta. |
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| Author: | macguyverjimny [ Fri Mar 29, 2013 7:33 am ] |
| Post subject: | Re: Jimny reduction gears |
Mine is a vvt, if i put a vvt auto transfercase in a vvt manual? will the reduction still be 27% ? i am running 215 75 r15, max tire size for future will be 235 75 R15 thank you
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| Author: | Bugsta [ Fri Mar 29, 2013 9:53 am ] |
| Post subject: | Re: Jimny reduction gears |
Correct. REVS will be around 4,000 or so at highway speeds. |
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