What is the difference between NP231 and np242?
The addition of a center differential is the main difference between the NP 242 and the NP 231 or Command Trac transfer case. Without a differential, the 231 transfer case offers only part time four wheel drive mode.
How strong is a NP231?
The 231 is decently strong (and very light), but you could definitely break it with a decent V8 if you’re too rough. Input torque rating is somewhere around 1800 ft. lbs.
Is the NP231 a good transfer case?
The New Process 231 transfer case is one of the most common and durable transfer cases ever produced. Found under Jeep Wranglers, Jeep Cherokees, Dodge Rams, and Chevy S-10 Blazers and pickups, the NP231 has proved itself reliable under some of the most hardcore rigs.
What does NP231 mean?
It means you should only use the 4wd on surfaces where it can get wheel slipage.
Are all 231 transfer cases the same?
The Jeep NP 231 transfer case was introduced in the 1988 model year. This transfer case was later to be called the NVG (New Venture Gear) 231J. Despite the different nomenclature, they are essentially the same transfer case, with the bulk of their parts interchanging.
What vehicles use a NP231 transfer case?
Since 1988, the NP231 has been the “Command Trac” transfer case used in the XJ Cherokee, MJ Comanche, and YJ Wrangler. It has been the “Command Trac” transfer case in the ZJ Grand Cherokee since its introduction.
How much torque can a NP231 handle?
According to New Venture Gear, the torque rating of the 231’s three-pinion gearset is 600 lb-ft, and the 241’s six-pinion set can handle up to 1,400 lb-ft.
How many spline is a NP231?
21 spline
The 231 comes in 21 spline and 23 spline versions with long, medium (rare) and short variations. The long shafts protrude 2.1″ from the front mounting face of the transfer case.
What vehicles have a NP 231 transfer case?
What vehicles have a 231 transfer case?
Usage. Since 1988, the NP231 has been the “Command Trac” transfer case used in the XJ Cherokee, MJ Comanche, and YJ Wrangler. It has been the “Command Trac” transfer case in the ZJ Grand Cherokee since its introduction.
What fluid does a NP231 transfer case take?
Re: MOTOR OIL recommended for NP231 T-case….. Both New Process 231 and 242 transfer cases can safely use 5w30 synthetic engine oil.
When did the NP231 rebuild kits come out?
We offer quality professional rebuilt NP231 transfer cases and parts including rebuild parts kits that are designed to be top of the line overhaul kits. The New Process 231 series transfer case started to be installed in Jeep, Dodge, and Chevrolet applications in 1987.
How much does it cost to rebuild a jeep NP231?
NP231 Master Rebuild Kit: – Neither of my cases is leaking, but good idea while the 23 spline unit is apart to do the rebuild. $88-$225, depending on which version I go with. I’m not seeing a whole lot of difference here, to be honest.
Is the Jeep NP231 transfer case good for?
The NP231 is surprisingly strong in nearly all areas, but occasionally, the output portion of the Jeep 26 spline to break under shock loading or other high-torque conditions. These factory mainshafts are good used units pulled from transfer cases that have come across our benches for slip-yoke-elimininator kits.
Where is serial number on NP231 transfer case?
These New Process cases have a circular tag on the rear of the case, near the center close to where the rear drive shaft exits. Identification information for the NP231 transfer case is on this tag typically includes model number, assembly number, and serial number and ratio data.