Outer Limits 4x4 Board

does anyone do after market gears for the rodeo or mu (larger diff) i have made a few phone calls and asked about dana 50 gears and regearing the rodeo but no one knows for sure what will fit what.

my understanding is that 4.55 is as high as you can get, although i have to have a look and see what the 4jx1t jackaroo has (pretty sure they are 4.3)

I was hoping to get something up around the 5+ ratio before fitting my rear locker.



NICK

There is a 5.38:1 set put out by Tera products.

http://www.independent4x.com/item.html?UCIDs=839915%7C1287603&PRID=1159955


Aussie supplier is USA-4x4 in Melbourne.
http://www.usa4x4.com.au/terraflex.html

I emailed them about supplying the Tera products a while ago but am yet to get a response so not sure how willing they are to look at us... Try giving them a call.

Noel

5.38 should be a good step to drive 33's. i think i will contact the company in the states and bring them in myself.

have you had, know of the quality of the gears?


NICK

It should have the Isuzu 12 bolt diff in it if it's the same as MU diff and here is the 5.38's for it
Independent4x

Edit: dam I'm a slow typer......

Looks like USA-4x4's website is no longer up. Have to look em up the old fashion way I guess?

I see how it gets a little confusing but 4wd-USA is a totally separate company based in Perth. USA-4x4 are in Melbourne.

Noel

what year mu am i looking for as i have checked about 20 diffs and all are 4.3 and 4.5


NICK

NICK wrote:what year mu am i looking for as i have checked about 20 diffs and all are 4.3 and 4.5


NICK

No they didn't come standard with 5.38 only aftermarket

Westoztroopa wrote:I see how it gets a little confusing but 4wd-USA is a totally separate company based in Perth. USA-4x4 are in Melbourne.

Noel

Oh ok, I thought they may have been the same but I was wrong

i got on to a set of 4.7 today, i ordered these and will run with them for awhile to see how they go.


NICK

Nick, out of interest where did you get hold of the 4.77s?

a motorsport shop on the sunshine coast that builds race cars. apparantly peter brock has a gen3 powered R9 and is fitting a complete NM pajero IRS to it. About 3 months ago i sold them the rear suspension and thought that i would give them a call to see if they could be any help.

They had a set of 4.77 from a race car they had just done a conversion on


NICK

As i am new to this group could you please help with a couple of questions? looking to run 33's on a 98td jackaroo. I have been lead to believe the front diff is a 10 bolt and the rear a 12. standard ratios are 4.53 will the 4.77 (off a wide track) be a sufficent change to notice the tyre size? the car does get used for towing (2.5 to 3 ton) regularly and dont want to lose the towing ability. thanks for you help.

Firstly welcome to the forum Toby.

Have a look at this site:

http://www.off-road.com/tools/geartable.html

According to this table a setup with 33s and 4.56:1 diff ratio would be pretty good for towing. Yarno has this combination on his MU. How do you find the MU on highways and for towing Yarn?

Noel

Yeah it's ok with 33 on but I do notice the power loss, but I only have the 2.8 TD. I'd be trying to get more power outa my engine before I'd tow 2-3 ton.
If I still had standard diffs and was going to change the ratio I would go for the 5.38 as this will leave room later on if you go bigger...

But if thats as big as you want to go, just try it and do the diff later if ya think its to bad, wether its 4.77 to come back to standard or 5.38 if you plan on doing some rock hopping or go even larger...

Yarn.

looked into this alittle more today, the 6VD1 and auto also has 4.7777 ratio.


NICK

Where did you get that info Nick?

I was sure that all 2nd gen Jackaroos (92+) have 4.3:1 for the petrol manual trans and 4.56:1 for petrol auto and all diesels. This is confirmed by my owners manual anyway...
I had heard that the only Isuzus to come out with the 4.77s was one of the later versions of the 1st gen Jackaroo. They are supposed to be pretty rare. I hadnt heard of the widetrack Jackaroo having the 4.77s either but am going to look into it.

Noel

sorry, i meant rodeo. R9



NICK

Forgive my ignorance, but what years/models are the R9 Rodeo?

Noel

thanks for the ideas and info on the ratios. i checked with a wrecker and he was pretty sure widetracks came with 4.77s but to be sure hes going to pull apart a 03 model today to check for me. in the meantime i think ill run my 265 75s during the week and for towing and my 285s on the weekend. thanks again for your help. as a matter of interest how kms are people getting out of the 3.0 diesel?

Westoztroopa wrote:Forgive my ignorance, but what years/models are the R9 Rodeo?

Noel

2002 on wards.