SJ Transfer Boxes

ok, ive seen a few people mentioning swapping the standard Transfer box for an SJ one to get a reduction in gearing instead of goign the rock lobster route..

Can anyone in the know shed some light on this ?
what work is involved ?
what box is required ?
Adapter plates or modified propshafts needed ?

check out the how do section

you will need to make new mounting arms for starters

use a sammy or 413 front frop for the rear of the jimny

sammy or 413 gearbox to trans box prop

if you want a working speedo you will need to get a gear made that fits behind the rear output flange & a bracket to attach the speedo sensor cus sj has mechanical speedo drive & jimny has electronic speedo

bend the shift lever about a bit

There are many kits available, Martin has used one of our very early kits on his Jimny and I'm pretty sure he'll tell you he's happy with it.

We have restructured our price list recently, making many of our Jimny products much more accesable to budget builders.

Our fitting kit is now only £195 + vat... and that includes your brackets, bushes and speed'o adaptor.


There are also many other kits available... D&G Tuning, Rhino Ray... and a few "shed builders" are also offering parts...

(Sorry Martin if this looks like an ad,I just thought someone should point out that there were actually kits available to buy off the shelf)

Rob Butler
ORA

Rob, no problem, all are welcome.

To further answer Jasons original question. There is not a lot to be gained from just fitting an SJ box. Clearly it is a step on the path to a full Rocklobster conversion ie. you have one SJ box and you have gone through the process of fitting it. However, in terms of ratio reduction its not a big step.

Standard Jimny T-box:

High: 1.32
Low: 2.145

SJ410 box

High: 1.58
Low: 2.51 - 14% reduction more than Jimny Low Ratio

SJ413 box

High: 1.41
Low: 2.27 - 5% reduction more than Jimny Low Ratio

Rocklobster

Low: 4.16 - 49% reduction more than Jimny Low Ratio

vitara_mad wrote: you will need to make new mounting arms for starters

use a sammy or 413 front frop for the rear of the jimny

sammy or 413 gearbox to trans box prop

if you want a working speedo you will need to get a gear made that fits behind the rear output flange & a bracket to attach the speedo sensor cus sj has mechanical speedo drive & jimny has electronic speedo

bend the shift lever about a bit

does this mean the front propshaft is still the standard jimny?

darthloachie wrote: does this mean the front propshaft is still the standard jimny?

yes still uses the standard jimny front prop you just have to make sure you have a large flange fitted on the front output of the transfer box

Yes - std Jimny prop on front but make sure the transfer box is the large flange type otherwise the prop won't bolt up. Otherwise you have to change the joint on the end for a Samurai one but be ware there are 2 different sizes of UJ. The Jimny uses 25mm uj's as do Japanese built Samurais, but Spanish built Samurais use 23mm uj's!

Added
Sorry our answers overlapped!!

Shed builders???

Jamie wrote: Shed builders???

i think that meens people who build them in there garden shed/workshop

nothing wrong with that in my opinion if the job is done to a good standard & its done by a pro that knows what there doing

there is only one that i know of that does it like that

I spent some time already looking at this and it seems that there is a lot of money to spend in this route ... I think that to achieve a proper reduction you will need 2 transfer cases, one from a 413 and one from a 410 and then get then to a specialist to make one 1 of the 2.... from my calculations from what I can remember the 413 transfer case was 250 and the 410 was around 400 + plus the "magic work"

So after thinking a lot I think I will go for the XXXXX (Product name removed at the request of the manufacturer)
There website is (LINK removed at the request of the Manufacturer)
Still one month to decide and then something will happen :evil:

MigCooper wrote: I spent some time already looking at this and it seems that there is a lot of money to spend in this route ... I think that to achieve a proper reduction you will need 2 transfer cases, one from a 413 and one from a 410 and then get then to a specialist to make one 1 of the 2.... from my calculations from what I can remember the 413 transfer case was 250 and the 410 was around 400 + plus the "magic work"

So after thinking a lot I think I will go for the (Product name removed at the request of the manufacturer). you can check them (Link removed at the request of the manufacturer).

Still one month to decide and then something will happen :evil:

you dont need to buy new transfer box's to get them made into a lobster box just get used ones it cost me £50 for both the 410 & 413 box & then £400 to get them made into a lobster box & the fitting kit only other thing i had to get was the prop shafts so all in it was about £500

or you could just buy everything already done inc the fitting kit & the lobster box from o.r.a or d&g tuning or they might even be more supplyers around