231/231 doubler

Lol I'd hope so. I was being serious though, I've had one in my rig for awhile now...it likes to leak. Use the Right Stuff and make sure its clean when you seal it. Also, you will want to loctite the bolt on shifter rail in place, mine backed out and ruined my weekend.
 
thanks for the advise what adapter did u use i got an old friend with a machine shop and was going to gett him to build my adapters and shaft acnt find a adapter around that i like
 
The 231/300 doubler i had was a box4rocks one from duffy. It was a sweet setup, but i sold it soon after I got it and went with a 4:1 D300 instead. If you are running it in a yj/tj with a stock wheelbase, i want to warn you about the super short length of the rear driveshaft.

Theres several guys on here that run a box4rocks, as well as several homebrew doublers. So it can be done w/o getting a kit. The last one i remember seeing on here was a homebrew 208 doubler, and he had pretty good pictures as well as a writeup.
 
i was going 231/231 got 2 freebies from work. i looked at the box4rocks but there a little mush for me right now but i may have to go with them if all else fails lol.
 
the only issue I see is having the shaft machined, is cut splines & no hardening... It might work ok, but it might break 1st time out... the rest should be fairly simple, measure 5x, cut once...
 
scotty015 said:
got a guy that cuts rearends and resplines them i was going to get him to make the staft thank it will still work
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As i like to say, you can make anything work. Will it work right and be dependable, that's another thing. I have put two 231s together before and also worked on a "kit" of my own design/making. Then again I like to do that kind of thing and like to try things when people say "you can't do that" or "that won't work". I have also put together several of Duffy's kits and my experience has been that his kits make things MUCH simpler/easier and probably save you money in the long run. Of course you don't have the satisfaction of doing it yourself, so......... If you want to try it, go for it! It's NOT an easy task but it can be done.
 
thats what i was wanting to know i have looked at both options i was just wondering b4 i made up my mind on what way i went with
 
I had one iteration where instead of having a shaft made I cut a main shaft and welded it together. That part held.......for awhile :lol:
 
Actually, the weld didn't break. The iteration I am talking about actually mated 2 complete 231s together with an adapter I made. The adapter spud shaft was made from a main shaft and a slip yoke drive shaft to produce a 3" spud shaft. I just never could get that version to seal. After a few miles it started leaking and after a while leaked like a sieve :) I'm sure the strength of the metal or the hardening is compromised somewhat by welding though.
 
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