Join Date: Aug 2000
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Re: 84 or 85 SJ410 t-case
Hey Captn Crunch,
What i mean by the 24mm nut is, on the older transfer cases, there is the input shaft, and 2 output shafts OK?
On the ends of these shafts, there is a flange, that is splined in the center.. so it slides on then there is a "nut" holding it on.. What i mean by the 24 Part, is you can remve the nut with a 24mm socket or wrench and the samurais ones are bigger, like 27 or somthing.
So if you have a SJ 410t-case and want to know if you can use it to make a 4:1, i find one easy way is to check to see if the nut is 24mm or not. If it IS, then the gears cannot be used to make the 4.16 case.
I can tell if it is the 12% lower or not just by turning it, but if you havent played with newer and older cases before it may be harder.
Another easy way to tell if its the "right" SJ 410 t-case (to make the 4.16 case) is to first make sure it has the 12% reduction, then look on the side of the t-case pointing to the gas tank, around the center of this side of the case, there is either a little 1" rod sticking out, or a 'bubble' in the case, this is becuase the 'good' 84 cases use the same type of bearings as the newer samurai cases.
The cases with the 'bubble' in the housing is a different kind of bearing, used in the older t-cases. Just becuase its an 84 case doesnt mean it is the right one, ive seen a few 84's and there not the right one.
Also, if its an 85 it WILL have the t-case mounted e-brake, bigger nuts that hold on the flanges, a shaft poking out of the housing, and the 4wd switch thing..
Check your t-cases in the samurais that are dated in 84, just incase, altho i have NEVER heard of a samurai of any year coming stock with the 12% lower t-case.
As i said above, just becuase its an 84 does not mean it has the special t-case, and im quite sure your Samurais (the ones dated 84 and 85) do not have the 12% reduction.
You cannot use your 1983 t-case gears to make a 4.16 case, it must be possible but would require lots of custom work.
87 samurai, 33" mud tyres, rear locker, baby rock lobster, fast back bestop top, custom bumpers, gator guard 2 interior, expander shackles, rear springs up front, soon cj's in rear, lawn edging flares