teh doubler

[87manche]

OK, so I've made my decision to put a doubler in the MJ, so I can keep my 3.73 geared axles, since I've got to drive this thing for hours on end to get to wheeling spots, and it's the camping vehicle. 10 hour trips are the norm for the MJ, and I like my 31's and 3.73's on the highway.

 

so. A few thoghts:

I can get 231C cases for $40. Possible to use a 231 behind another 231 as the doubler, or is a 231 just not strong enough. If it's not I'll go the tried and true D300, but I was trying to avoid the cost of flipping it.

 

The D300, man what a T-case. If it ends up being that I need to go gear driven this is the preferred case for me.

Whos got some info on flipping and twin sticking one? I'm trying to keep this little experiment on a budget. Otherwise i'd just go buy a stak.

[JOMJ87]

Kinda speaking out of my field of knowledge on the Chain driven cases but can't you put a lower Low in it and be better of and possibly cheaper. Plus less wieght and hassle???? I was just thinking since you drive it on the street so much that it could be a better option. If you can't thats good info but if you can I might try it. Good luck

 

Cole

[DirtyComanche]

A lot of guys go 231/231. I probably wouldn't. Or if I did, I'd use a 231C for the second case as it has a wider chain and 6-pinion planetaries...

 

 

 

 

I think you can get away with it if you neither drive totally crazy nor weigh an absurd amount.

[87manche]

well, I figure that with the wore out 4.0 I'd be morelikely to pop a u-joint than a case.

I had planned on using a 231c for the rear half, keeping the front half of the 231j, but upgrading it's planetaries with guts from another 231C.

 

In regards to just putting a 4:1 in it.

I figure that a doubled t-case will come in at $600, and I was going to upgrade the driveshafts anyway, so I'm not factoring in that cost.

a 4:1 kit is almost $1000.

Plus, I can run the trails and mud in the first low, which is perfect for my 3.73's and 34's, and when I hit rcks, I can do double low. then put the 31's back on and hit the highway.

[pingpong]

D300 flip kits are expensive, I know there is a write up somewhere on pirate on how to do it yourself for cheap. Then the weakness becomes the outputs.... Upgrading to 32 spline is almost a must especially if you plan on rock crawling.

 

 

Do a search on pirate, and it will reveal all you need to know about doing the doubler

[carnuck]

Want to do an upgrade? Get a NV241 OR Rok Lok case from an '03 up Rubicon. FACTORY 4:1 low range, 23 spline (bolts up to AX-15 or '91 up AW4 and even FSJ 727!) Find a used one or get brand new from http://jbconversions.com

 

Forgot to mention that it's built with diesel tcase parts and comes with a fixed yoke new!

[87manche]

Want to do an upgrade? Get a NV241 OR Rok Lok case from an '03 up Rubicon. FACTORY 4:1 low range, 23 spline (bolts up to AX-15 or '91 up AW4 and even FSJ 727!) Find a used one or get brand new from http://jbconversions.com

 

Forgot to mention that it's built with diesel tcase parts and comes with a fixed yoke new!

I'd love to, but then I'm creeping on 1K bucks again.

[87manche]

D300 flip kits are expensive, I know there is a write up somewhere on pirate on how to do it yourself for cheap. Then the weakness becomes the outputs.... Upgrading to 32 spline is almost a must especially if you plan on rock crawling.

 

 

Do a search on pirate, and it will reveal all you need to know about doing the doubler

 

I've been searching on pirate.

looks like the box 4 rocks can be setup 231J to 231C. He said it should last fine behind a stock 4.0, he just prefered the 300 for the twin sticks.

Twin sticks aren't so important to me, as I'd just end up destroying the D30 with front digs :D