Jeep Wrangler Forum banner
  • Hey everyone! Enter your ride HERE to be a part of September's Ride of the Month Challenge!
1 - 8 of 8 Posts

·
Registered
Joined
·
3,531 Posts
Discussion Starter · #1 ·
Has Anyone heard or seen a double transfercase on a jeep? I did this on my Toyota hilux but every jeeper I meet they think I have been drinking the funny coolade.
 

·
Premium Member
Joined
·
2,866 Posts
Has Anyone heard or seen a double transfercase on a jeep? I did this on my Toyota hilux but every jeeper I meet they think I have been drinking the funny coolade.
It is pretty difficult to add a second t-case to a normal wheelbase TJ that has the inline 6 in it.

You can toss a box for rocks in there with the 4 banger and just slide the engine forward enough to keep the driveshafts the same length.

I think it is roughly 8" or so front to back, so a regular swap into a normal TJ means that much has to come out of the rear driveshaft. Not really that viable.
 

·
zombie & ninja slayer
Joined
·
2,276 Posts
^ what he said. You would be better off getting a klune v, a rubi crawler (i think its called) , or a lower t case
 

·
Registered
Joined
·
1,180 Posts
I have a buddy who mated a 231 and a D300 in his YJ; 4.0L in stock location.
The combo works extremely well.

He did extend his wheelbase by 2" front and 2" rear to allow for the extra length, and is running Wagoneer ( center pin offset) springs.
 

·
Registered
Joined
·
3,531 Posts
Discussion Starter · #5 ·
lynn said:
I have a buddy who mated a 231 and a D300 in his YJ; 4.0L in stock location.
The combo works extremely well.

He did extend his wheelbase by 2" front and 2" rear to allow for the extra length, and is running Wagoneer ( center pin offset) springs.
Thanks for the input. I was planning on changing the wheelbase anyway. I just didn't know what combo worked. Did you know what was his final gearing.
 

·
Registered
Joined
·
1,180 Posts
Final gearing will depend on the low gear of the tranny and the axle gears.
I don't recall his tranny or axle ratios.

To determine the compound low range ratio of this set up with the tranny and axle gears of your choice:
Tranny low gear ratio X NP231 low range ratio X D300 low range ratio X axle gear ratio = compound low final drive ratio

There are instructions out on the web for flipping a D300 and mating it to an NP231. It's not too difficult, not too expensive if you can obtain good working tcases cheaply.
 

·
Registered
Joined
·
3,531 Posts
Discussion Starter · #7 ·
lynn said:
Final gearing will depend on the low gear of the tranny and the axle gears.
I don't recall his tranny or axle ratios.

To determine the compound low range ratio of this set up with the tranny and axle gears of your choice:
Tranny low gear ratio X NP231 low range ratio X D300 low range ratio X axle gear ratio = compound low final drive ratio

There are instructions out on the web for flipping a D300 and mating it to an NP231. It's not too difficult, not too expensive if you can obtain good working tcases cheaply.
Ok. I knew how to calculate gear ratio. It was a trick question just to see if you actually know what you wear talking about. It seams you do. Thanks for the info I will be shopping for a transfercase.
 

·
Registered
Joined
·
3,531 Posts
Discussion Starter · #8 ·
lynn said:
Final gearing will depend on the low gear of the tranny and the axle gears.
I don't recall his tranny or axle ratios.

To determine the compound low range ratio of this set up with the tranny and axle gears of your choice:
Tranny low gear ratio X NP231 low range ratio X D300 low range ratio X axle gear ratio = compound low final drive ratio

There are instructions out on the web for flipping a D300 and mating it to an NP231. It's not too difficult, not too expensive if you can obtain good working tcases cheaply.
Thanks by the way it is showing up now that I googled the two transfercases together
 
1 - 8 of 8 Posts
Top