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New Process NP 231

Email This Bookmark Print This Review      Find On: JCWhitney.com | eBay.com
Rating:

Product Information

MSRP: $749.00
Average Price: $10,661.13
Manufacturer: New Process
Recommended?
Yes: 104 / No: 7

AKA NP 231 J

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PackDude

Registered User
PackDude's Reviews
08-16-2009, 11:48 PM
Price: $1,025.00
Pros: Heavy duty chain and gears All new parts
Cons: No "2 low" mode
Recommended? Yes

Comments: I decided to get a SYE to correct the slight vibes in my drive shaft since doing a 2" OME lift. But since the SYE kits by themself are upwards of $300, I figured what the heck, spend another $600 and get a heavy duty NP231 to boot.

Researching the various options, it looked to me like the JB Conversions HD NP231 with their super short SYE was the way to go. It's got a wider chain, a planetary gear with 6 helical gears instead of 3, and all the parts are brand new, not refurbs.

The folks at JBC are very professional and had the unit built and delivered within a few weeks. The unit was packaged very well for the several thousand mile freight trek from Louisiana to Washington State.

So far, no leaks or anything. It bolted right in, and worked from the get go. It came from the factory with the studs attached in a ziploc bag. The studs are kind of hard to install, but I guess they didn't want them poking holes through the shipping crate or getting bent in transit.

I will give the transfer case a 5 star rating unless something happens to it! I am planning to install a Super 35 30-spline rear axle with Detroit locker, and an upgraded front differential, so my Jeep can actually handle what this transfer case can dish out.


iowaneedshills

Registered User
iowaneedshills's Reviews
08-05-2009, 11:43 PM
Price: $0.10
Pros: came with the jeep, hasn't broken yet
Cons: slip yoke, chain drive, 2.72:1 Low range, Gear driven speedometer signal
Recommended? Yes

Comments: This is the transfer case that comes in about every jeep. Works pretty well.


Oaktree
Registered User
Oaktree's Reviews
07-29-2009, 08:31 PM
Price: $300.00
Pros: pretty much a stock transfer case.
Cons: nothing is wrong with it
Recommended? Yes

Comments: its alright. the NP 231 is pretyt much the stock transfer case that a wrangler comes with.


dajeepman
Registered User
dajeepman's Reviews
07-26-2009, 12:33 PM
Price: $1.00
Pros: It came with the JEEP
Cons: Not low enough stock
Recommended? Yes

Comments: This is the Factory T case that comes with most XJ's


kurt13r
Registered User
kurt13r's Reviews
07-15-2009, 06:54 AM
Price: $700.00
Pros: Works like it should
Cons: ?
Recommended? Yes

Comments: Never had an issue putting it in 4x4. Works good.


skip-yj
Registered User
skip-yj's Reviews
07-01-2009, 09:11 PM
Price: $111.00
Pros: never failed me. and easy to take apart
Cons: ......
Recommended? Yes

Comments: very good. and veerryyy universal. never failed me.


compcrasher86

Registered User
compcrasher86's Reviews
05-18-2009, 11:07 PM
Price: $1.00
Pros: Its pretty sick and shifts really well, 4low sounds and feels great. Good to be able to switch into 2wd when you need it
Cons: No 4wd Fulltime so you absolutely can not use 4wd on dry paved surfaces, and unlike the QD in the new Jeep Grand Cherokees, it is hand shift and not electric shift... but hey, its a Jeep, make a sacrifice for many benefits
Recommended? Yes

Comments: I like it alot but I miss the 242 that I had in my ZJ because this one can only use 4wd as you need it and will not automatically kick in like the 4fulltime on the ZJ does. Oh well, its a Jeep


Dmax5er

Registered User
Dmax5er's Reviews
05-17-2009, 11:10 AM
Price: $3,000.00
Pros: Built heavier than stock.
Cons: none yet
Recommended? Yes

Comments: bought with my trans as a kit from mantrans, its is now a NP231JHD and working great .


ncsmokeeater
Registered User
ncsmokeeater's Reviews

03-09-2009, 03:53 PM
New Process NP 231
Recommended? Yes

Comments: Got issues that I'm not sure of. I like it but there are some kinks I'd like worked out. The stock chain and sprockets SUCK.


mj-jeeper
Registered User
mj-jeeper's Reviews

03-05-2009, 06:38 PM
New Process NP 231
Recommended? Yes

Comments: NP231 - "Command-Trac" part-time only - 2.72:1 ratio low range - shift pattern 2H - 4H - N - 4L


bignateb

Registered User
bignateb's Reviews

03-05-2009, 08:08 AM
New Process NP 231
Recommended? Yes

Comments: Great. only had some problems with oil leaking out of it due to some cracks but that was the way that I bought it so it will be fixed soon


ckhanna71
Registered User
ckhanna71's Reviews

03-04-2009, 10:48 AM
New Process NP 231
Price: $500.00
Recommended? Yes

Comments: REPLACED THE INPUT SHAFT TO MATE UP TO THE TH700R4 TRANSMISSION FROM ADVANCE ADAPTERS


abbottg
Junior Member
abbottg's Reviews

02-28-2009, 11:18 PM
New Process NP 231
Price: $200.00
Recommended? Yes

Comments: Made the upgrade with the AX15. Had to make some linkage, but otherwise good piece. Wish I had the SYE. Maybe for Christmas


laurxj

Registered User
laurxj's Reviews

02-22-2009, 12:25 AM
New Process NP 231
Recommended? Yes

Comments:


lostincanada
Registered User
lostincanada's Reviews

02-17-2009, 10:58 PM
New Process NP 231
Price: $1.00
Recommended? Yes

Comments: not bad... rather an atlas gear drive 4 to 1 ratio... but have 2 more spares before i think i will bauy another one..


cdsmith_2002
Registered User
cdsmith_2002's Reviews

02-14-2009, 08:22 PM
New Process NP 231
Recommended? Yes

Comments:


badlands1
Registered User
badlands1's Reviews

01-25-2009, 08:14 PM
New Process NP 231
Recommended? Yes

Comments: Tride and true t-case.Always been good to me with all my xj's...Nice to beable to put it in on the fly..


cademan04
Registered User
cademan04's Reviews

01-22-2009, 08:50 PM
New Process NP 231
Recommended? Yes

Comments: i was told i should get a jeep with the 231, so thats what i got. i like it so far. however, i have nothing to compare it to.


River Ryder

Registered User
River Ryder's Reviews

01-12-2009, 05:30 PM
New Process NP 231
Recommended? Yes

Comments: It never given me a problem pretty reliable. Easy to Service and upgrade. Parts are also readily available.


Ron Farrell
Registered User
Ron Farrell's Reviews

12-26-2008, 11:41 PM
New Process NP 231
Price: $600.00
Recommended? Yes

Comments: no problems with the NP 231. One tough, bullet proof transfercase for what we use them for. Trouble free and easy to work on on the trail or back at the parking lot.


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