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JB Conversions NP231J Super Short SYE |
Since 1994, our company (JB Conversions) has sold the “HD Slip Yoke Eliminator” kit for all models of the NP231 transfer case. With many thousands of HD kits on the trail, we have had 100% success with not one failure. The target market of our original HD SYE kit was the Jeep YJ and TJ. The typical Jeep suspension lift in past years was 3.5” to 4”. Suspension companies have now moved into the next level of design often call “long-arm” kits. These new suspensions yield high travel and high lift. The HD SYE kit that was once more than adequate is now coming up a bit short. For suspensions in excess of 4 inches, we have designed a new HD SYE kit that shortens the overall length of the NP231 by another 2-1/2” over the standard HD SYE.
2.25” SHORTER THAN OTHER HD SYE KITS ON THE MARKET
OVERALL LENGTH EQUAL TO ATLAS II
PROVEN 32 SPLINE OUTPUT SHAFT
ALLOWS FOR MAXIMUM LENGTH IN THE REAR DRIVELINE
MULTIPLE END YOKE APPLICATIONS
ELECTRONIC SPEEDOMETER FEATURE FOR ACCURATE SPEEDOMETER ADJUSTMENT
Our new shorty SYE kit features the time proven, 32 spline output design. The mechanical speedometer has been replaced by a typical hall effect speed sensor and custom tone wheel. The electrical pulse generated by the speed sensor is recognized by the Jeep speedometer instrument as stock therefore operation is smooth and reliable.
An added benefit of the new electrical design is in the flexibility of speedometer calibration. Signal converters from Dakota Digital, Inc. and Superlift Suspensions can be easily connected into the Jeep wiring loom (only 3 wires) for easy adjustability. The Dakota Digital converter will be offered through JB Conversions, Inc. at a heavily reduced price. In the near future, our company will provide a different signal converter that will be a ?plug in and go? package.
Jeep Wranglers from 1987 to 1991 utilize a cable driven speedometer. For these applications we recommend the VDO electronic speedometer as a replacement. The VDO unit has its own adjustment features eliminating the need for the signal converter mentioned above. The VDO unit is the same size as the stock speedometer and can be installed in the factory location behind the plastic dash panel. The illumination is a bit better than stock and the face matches stock very well. Installation is a snap with no wiring headaches.
Our new shorty SYE comes with a 1310 CV yoke (reference Spicer Part No. 2-4-5341) however 1 ton yoke sizes are compatible.
