SAS gearing

OVRLNDR

Test Drive
Location
Fall River, NS
Hi, I'm in the process of collecting the parts to leaf spring DIY SAS my 02 Xterra.
Parts here are super hard to find - I've got the option of a complete Toyota axle (unknown year/model) with IFS hubs, and a 3rd member with 4.56 gears.

Do you think 4.56's will work ok with my 4.636 rear ?

Difference of 0.076


Percentage difference
between V[SUB]1[/SUB] = 4.56 and V[SUB]2[/SUB] = 4.636

( | V[SUB]1[/SUB] - V[SUB]2[/SUB] | / ((V[SUB]1[/SUB] + V[SUB]2[/SUB])/2) ) * 100

= ( | 4.56 - 4.636 | / ((4.56 + 4.636)/2) ) * 100
= ( | -0.076000000000001 | / (9.196/2) ) * 100
= ( 0.076000000000001 / 4.598 ) * 100
= 0.016529 * 100

= 1.6529% difference



Thanks
 

OVRLNDR

Test Drive
Location
Fall River, NS
Thanks, I believe the Toyota axle with the IFS mod brings the hubs out to 59 inches. I'd have to measure the front, but I think the rear is 63 inches - so 2 x 2 inch spacers might bring them out enough.

Correction - I just measured rotor to rotor and it's ~59 inches :)
 
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Jbat

First Fill-Up (of many)
Location
Utah
Look for a Dana 44 out of late 70s ford or any other pickup with drivers side drop diff. They will be slightly wider than the x rear but work good
 

Jbat

First Fill-Up (of many)
Location
Utah
thanks, what about gearing with my 4.6 gears?

Either regear to match whatever gears you put in the front or find a pair of matching axles (those trucks came with Dana 60 rears) and swap them both. Chances are you'll need to regear anyway and the 44 and 60 gears are cheaper
 

Prime

Shut up Baby, I know it!
Admin
Location
Denver Adjacent
If you're SASing, I gather that you're going to run at least 33s if not 35s. You're going to want at LEAST the 4.90s. If you only swap the front axle, you can get 5.13s for the h233b and matching gears for a D44.
 

mtnzuk

Bought an X
interesting read. I am most likely going to look to an SAS conversion once I find my Xterra (hopefully) I read online where they sell some transfercase gear sets. Not cheap but does anyone use these or mostly just go with SAS and 5 ratio gearing with stock T-case?

Pete
 

OVRLNDR

Test Drive
Location
Fall River, NS
Thanks for all the comments!
My NOOB SAS approach will have to be reasonably inexpensive or not at all - and the reason for the question is because donor parts here are very scarce which makes them super expensive. There are no 1st Gen Xterra's around here, not even in bone yards.

So...the plan is to keep my existing 265/75/16's currently on Toyota rims, use leaf springs, and this '79-'85 Toyota axle which comes with the IFS hub mod and a 4.56 3rd. I need to flip the axle too as it's passenger side drive. The good thing about that axle is it's a well documented axle setup for SAS's.

The X isn't a DD, so having a 1.5% front to rear difference might be ok - we're mostly mud/woods here.
 
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Grandpa X

First Fill-Up (of many)
Location
Luverne Mn
You can't just flip the axle... the tires will turn the wrong way. You have to cut the housing flip the long and short sides. If I remember correctly this is hard to do with a toy housing. Thus why Tacoma folks also use Waggy 44's.
 

Grandpa X

First Fill-Up (of many)
Location
Luverne Mn
Better check on the ability to do that.... does someone local have the ability to align the housing correctly when welded back together. I wheel/know a lot of Toyota folks... they either buy an aftermarket housing (Diamond/Trail Gear) or run a waggy in order to go driver drop. Most of these guys are hacks... so if they could they would.
 

OVRLNDR

Test Drive
Location
Fall River, NS
I appreciate and respect the input. I don't have the axle BTW.....It's just an option right now.

If it's not a good idea, then I'll be wheeling with my Lokka until I can find something more suitable. Thanks
 
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xterror04

Site sponsor
Founding Member
Location
Carlisle, Iowa
Where are you located? Maybe we can help find an axle... I have the wagoneer Dana 44 up front with leaf springs and I love it... Definitely an inexpensive approach
 

drbandkgb

Titan Swapped / SAS'd
Founding Member
Thanks for all the comments!
My NOOB SAS approach will have to be reasonably inexpensive or not at all - and the reason for the question is because donor parts here are very scarce which makes them super expensive. There are no 1st Gen Xterra's around here, not even in bone yards.

So...the plan is to keep my existing 265/75/16's currently on Toyota rims, use leaf springs, and this '79-'85 Toyota axle which comes with the IFS hub mod and a 4.56 3rd. I need to flip the axle too as it's passenger side drive. The good thing about that axle is it's a well documented axle setup for SAS's.

The X isn't a DD, so having a 1.5% front to rear difference might be ok - we're mostly mud/woods here.

Sadly there is nothing cheap about doing this..
I'm finishing up mine now..
 

Prime

Shut up Baby, I know it!
Admin
Location
Denver Adjacent
Thanks. I'm in Nova Scotia, Canada.
From what I've read, that seems to be the way to go. How did you match the gearing up with the D44/H233b?
The matching set is 5.13s. They are readily available for the D44, and Rugged Rocks sells the matching gears for the H233b.
 
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