Do I need a Sye on my XJ?
No you don’t need an sye to lift an xj. You WILL need tools, jack stands, jack, and some beer to do it.
What did the NP231 come in?
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 do you know if you have a Sye?
Yours is a fixed yoke and shorter so theres your SYE aka slip yoke eliminator. The CV style drive shaft you can tell it is one by how it has the to joints right at the fixed yoke on the t-case and it also has that slip joint (where the blue is).
What does a slip yoke eliminator do XJ?
This sliding capability allows for changing length depending on the vehicle’s movements. A slip yoke eliminator, abbreviated SYE, does what the name suggests: It eliminates the slip yoke from the transfer case. Instead, it turns it into a fixed yoke that does not slide.
How strong is the NP231?
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.
What does a Sye look like?
A sty is a red, painful lump near the edge of your eyelid that may look like a boil or a pimple. Sties are often filled with pus. A sty usually forms on the outside of your eyelid, but sometimes it can form on the inner part of your eyelid. In most cases, a sty will begin to disappear on its own in a couple days.
Do I need a Sye?
A slip yoke eliminator is a cure for driveline vibrations caused by doing a suspension lift. If you don’t have driveline vibrations you don’t need a SYE. If you’re asking if you have a SYE, post a pic of the rear of your transfer case.
Can you twin stick a NP231?
While Dana 300 owners can use twin sticks available from several companies, NP231 owners must replace the range fork and sector with new ones from JB Conversions to alter the movement of the internal sleeves of the T-case.
Can Jeep vehicles still use the NP231 kit?
Jeep vehicles using the early NP231 can still use our kit, providing that the needle bearings are removed from the stock drive sprockets.
When did the New Process Gear NP231 come out?
Designed with the most current design shaft found in the New Process Gear NP231. This current design shaft was introduced in 1997. Jeep vehicles using the early NP231 can still use our kit, providing that the needle bearings are removed from the stock drive sprockets.
What is the best slip yoke eliminator for a jeep NP231?
Slip Yoke Eliminator for all Jeep NP231 transfer cases. Choose between Advance Adapters or Teraflex brands, both kits are essentially the same design. We consider these to be the all around best slip yoke eliminator kit for nearly any vehicle with a 231 transfer case. This is an especially common slip yoke eliminator for TJ and YJ Wranglers.
What is wrong with my NP231 output shaft?
The factory NP231 output shaft exhibits a very weak area just behind the oil pump splines. It is not uncommon to see these shafts shear at any one of three stress risers in the section that needs strength most. All kits include replacement output shaft, tailhousing, rear seal, bearing, 1310 CV style yoke, hardware, and instructions.