I personally like the quality and design of the Advance Adapters SYE over all others.
The JB Super Short is high quality and well designed but I think it is overly-complex for most applications.
There's the issue with the speedometer being electronically driven instead of mechanically driven.
All this really affects though is your ability to calibrate you speedometer due to inaccuracies created by changing tire diameter and/or gear ratios. With a mechanically driven speedometer it is as easy as changing a little plastic gear. With the electronically driven speedometer it makes it a whole thing. However, this only matters if your speedometer is off because your tire and gear ratios don't match up well to the stock tire size to gear ratio ratio, like if you've put big tires on without re-gearing your axles or if you've re-geared real low without big tires. This whole discussion though is mostly a thought experiment, many
people don't seem to worry about re-calibrating their speedometer anyway so it's kind of a moot discussion.
The other issue that sometimes creates a problem is that the output yoke on a JB or Teraflex super short sye
is not a standard yoke. It is custom made to be shorter and have a few other dimensions that are unique to those kits. That means if you ever need to replace the yoke or ever want to upgrade it from 1310 series to 1350 series you are going to have a harder time finding what you need.
Where I recommend the super short sye is in a TJ when someone has more than 4 inches of total drivetrain lift. This is usually in the form of a
4 inch lift and a tummy tuck (raised transfer case). Otherwise I think the drive shaft operating angles with a normal SYE kit are fine. The extra short SYE kits shorten the transfer case and increase the drive shaft length by 3 inches. Using
this rise over run calculator you can compare the angles between a 16" long drive shaft with a standard SYE and a 19" long drive shaft with an SS SYE. Technically the drive shaft length is the hypotenuse and not the run but it's close enough for rough comparisons. Also, the rise is not going to be equivalent to the lift height, my educated guess in a TJ with a 2.5" lift and proper rear pinion adjustment is a rise/drop of about 6 inches. That would mean that the angle reduction achieved by the super short SYE is usually only a couple degrees, nothing life changing on most jeeps with a modest lift.
The super short SYE
is always a good option and in my opinion well worth the extra expense or other possible drawbacks if you
have more than 4" of drivetrain lift.
I'm doing something new by using bold italics to make the key bits of info stand out. What do y'all think, is that helpful Or Is It AnOyInG?
