ZipperheadXJ00
NAXJA Forum User
A buddy made mention to a 231/231 doubler.... Possible or not?
Thanks
Thanks
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Opinions?
- Thread starter ZipperheadXJ00
- Start date
clean4drxj
NAXJA Forum User
- Location
- CT.
I believe it is but I'm no expert in the doubler field.
chedisme
NAXJA Member
- Location
- middletown, NY
sure its possible. thats what the box for rocks kit (I think) was originally meant for. then people started doing 231 to 300s.
thats alot of power to be putting through the second 231. think of the second 231 like a 10mill bolt and castor adjustor on a radius arm 3 link. if your easy on it it will probably be fine, but if you romp on it you run the chance of it failing.
here you go:
http://www.pirate4x4.com/forum/general-4x4-discussion/517477-box4rocks-231-231-linkage.html
thats alot of power to be putting through the second 231. think of the second 231 like a 10mill bolt and castor adjustor on a radius arm 3 link. if your easy on it it will probably be fine, but if you romp on it you run the chance of it failing.
here you go:
http://www.pirate4x4.com/forum/general-4x4-discussion/517477-box4rocks-231-231-linkage.html
Last edited:
DavesOffroadSupply
NAXJA Forum User
- Location
- Nazareth, PA
I have seen this setup run with a 231/300 combo and he used to go throught the 231 crawl box portion of them pretty regularly. He was only running a 4.0, NP435 not ridiculous power.
chedisme
NAXJA Member
- Location
- middletown, NY
what part of the crawl box would fail? the case?
DavesOffroadSupply
NAXJA Forum User
- Location
- Nazareth, PA
Most of the time it was the case. Sometimes the planetary.
ZipperheadXJ00
NAXJA Forum User
I followed a trail of links to find out that Duffy, the guy who was making them, isn't on Pirate anymore... This is the link that the final page gave me:
http://motors.shop.ebay.com/merchant...Q_fromZQQ_ipgZ
But my work computer won't let me go to it.... Hopefully he's still making the 231/231 kits...
chedisme
NAXJA Member
- Location
- middletown, NY
the link goes to ebay and says 0 products found.
heres the link to the one he has up.
http://www.ebay.com/itm/doubler-cra...pt=Motors_Car_Truck_Parts_Accessories&vxp=mtr
it says it will work for a 231, 300 flipped or non fliped.
heres what the description says
np 231 crawl box "doubler kit"
This is a simple kit that takes a np231 tranfer case and makes a low cost crawl box out of it, It uses the front half of a np231 case that you provide and in about a hour or so of work you can have a crawl box that will lower your gearing 2.73 to 1 . Just take a 231 case with the right input shaft to fit your trans output and pull it apart , lay the big plate on the casting and mark it were to cut, then file or grind the block off plate to fit, tig weld the block off plate and thats it The kit is made in house on CNC equipment out of 6061-T6 alum and the mid shaft is 4340 cromo steel thats been through hardened. Well I make these in lots of spline counts I only offer 23 spline kits on ebay, so you can mount a Dana 300 flipped or non flipped as the T case or use a second np231 as the T case. there is a lot of info on line under my shops name D.D.Machine and under the product name box4rocks. Thanks D.D.Machine
heres the link to the one he has up.
http://www.ebay.com/itm/doubler-cra...pt=Motors_Car_Truck_Parts_Accessories&vxp=mtr
it says it will work for a 231, 300 flipped or non fliped.
heres what the description says
np 231 crawl box "doubler kit"
This is a simple kit that takes a np231 tranfer case and makes a low cost crawl box out of it, It uses the front half of a np231 case that you provide and in about a hour or so of work you can have a crawl box that will lower your gearing 2.73 to 1 . Just take a 231 case with the right input shaft to fit your trans output and pull it apart , lay the big plate on the casting and mark it were to cut, then file or grind the block off plate to fit, tig weld the block off plate and thats it The kit is made in house on CNC equipment out of 6061-T6 alum and the mid shaft is 4340 cromo steel thats been through hardened. Well I make these in lots of spline counts I only offer 23 spline kits on ebay, so you can mount a Dana 300 flipped or non flipped as the T case or use a second np231 as the T case. there is a lot of info on line under my shops name D.D.Machine and under the product name box4rocks. Thanks D.D.Machine
Last edited:
ZipperheadXJ00
NAXJA Forum User
Thanks! I'll have to check it out!
