[Dr_Snapid]

I have a 2003 jimny with auto

Rear diff seems to have been damaged after some water ingestion. Might need to replace the centre.

Is this the same as a SJ413? I can find alot of SJ413 stuff that says its compatible but i'm not sure.

Might do a locker while i'm at it

[Benz]

diff size is the same i think.
gear ratio might be different though

[alien]

you can get air lockers for jimny... do that =)

http://www.arb.com.au/products/arb-air- ... cessories/

[Benz]

getting a air locker be easier.
but might not be cheaper.
i know the diff ratio on a auto Jimny is different to a manual one

[Dr_Snapid]

i suppose i better figure out my ratio. there seems to be some disagreement re ratios, some say everyone is 4.09, manual or auto, others say they are different.

[Dr_Snapid]

also i think my issue is with the ring gear/crown gear. a hum/whine from the rear when under power/cruising. goes away when you lift off the throttle

so i'll need to replace these as the locker doesnt include these parts.

A local wrecker can sell me a jimny centre for $350 or whole diff for $700.00 never even asked about ratios but i assume the one they have is from a manual

my diff started playing up after i got bogged in deep water. when i drained it 5L of mush came out. so there is a chance the damage is more than just the centre so i'm thinking of replacing the diff (regrettably...)

[Dr_Snapid]

on a side note... if i buy both front and rear centres from a manual, i would increase final drive to 4.3 giving me a little more lowdown crawling torque. I do sometime do highway driving though so i wont commit to this yet.

the point of my OP is that i will pay more if i have to specifically shop for a jimny auto diff centre, as opposed to if i can buy any centres from other compatible cars as well. i realise if i change ratios i have to do front and rear so they match though. if i must replace my diff centre i might as well see if i can make any improvements like lockers or better ratios

hope that makes sense

[alien]

the arb site lists a difference between models too - as in, you need to sprecify the year of your jimny between 99-05 and 05-10... perhaps the difference is not between manual and auto, but between builds? (maybe the VVT engined jimny has different ratios)

[Dr_Snapid]

my 2003 jimny is the one without vvt.

sierra stuff seems readily available. just dunno if it fits lol

[joeblow]

Benz2369 wrote:

i know the diff ratio on a auto Jimny is different to a manual one

yet to see an auto one that has a different ratio than a manual. i've contacted suzuki about different ratios for that model and they do not exist. they are all 4.09 to 1.


if you are after another centre get one from a widetrack maruti, they are the same size and are 4.1 to 1 which will be fine.

[Benz]

joeblow wrote:

Benz2369 wrote:

i know the diff ratio on a auto Jimny is different to a manual one

yet to see an auto one that has a different ratio than a manual. i've contacted suzuki about different ratios for that model and they do not exist. they are all 4.09 to 1.


if you are after another centre get one from a widetrack maruti, they are the same size and are 4.1 to 1 which will be fine.

guess i'm wrong.
have just head lots of people say they were different

[joeblow]

if you read the sales brochures they state they are different, this is where we got confused many years ago, but pulling them apart and enquiring with suzuki they aonly list one ratio for aussie models.

[Dr_Snapid]

thankyou guys for your great help so far. at least i can safely get a wrecked diff centre from a manual jimny.

So does anyone know about the sj413 diff... is it the same? its just i heard the sj413 locker fits the jimny so im wondering if the diff centre is the same

[alien]

it may fit, but its a 3.7, not a 4.1 (or 4.09)

[Dr_Snapid]

hmm oh well. the wreckers have a jimny one.

i have to decide if its worth doing the bearings in the old one to see if it helps or just replace it

[jimnyzpwn]

The rear ARB Air Locker from my 02' T2 Jimny fitted straight into my 1992 wt sierra if that helps anyone. The rear carriers & centres are interchangeable as are the rear crown-wheel & pinion's.

[joeblow]

jimnyzpwn wrote:

The rear ARB Air Locker from my 02' T2 Jimny fitted straight into my 1992 wt sierra if that helps anyone. The rear carriers & centres are interchangeable as are the rear crown-wheel & pinion's.

same locker part number.......................

[zukmeista]

Do jimny diff gears fit sierras?

[BlueSuzy]

zukmeista wrote:

Do jimny diff gears fit sierras?

Rears only. Fronts are 1L size High pinion.

[zukmeista]

so the gears will fit sierra centres?

[Dr_Snapid]

Just to follow this up. i bought a wrecked jimny diff from a manual. Definately works fine. Very slight difference in shock mounts (needed longer bolt) but same ratio.

Now my front's shot too, but at least it isnt a problem most of the time. The front shaft can rattle a lot, thats all.