doing the conversion, you gain a much longer drive shaft and
a better driveline angle. You also gain a C/V joint. These
two features help alleviate those nasty drive line vibes.
for your new drive shaft must be done carefully. Here, Cole
is measuring his stock shaft for comparison-sake. Once you
have the conversion done, you will need to get measurements
to order your new drive shaft. Tom Wood can tell you exactly
how to measure properly for a perfect fit.
is the main cavity of the transfer case. This whole assembly
would fall out on you if you tried to do this with the case
still installed in the Jeep. This is much easier to do on
a bench where you can see how the parts are assembled as you
take them out (they only go in one way).
is possible that you will need a bearing press. You may need
help from a shop for this but it shouldn't be a big deal.
a Drive Shaft right?
is like calling the Mona Lisa just a painting when you are talking
to Tom Wood of Tom Wood's Custom Drive Shafts. I never realized
that there is so much involved in making the perfect drive shaft.
If you want to know more, just visit Tom's website www.4x4Shaft.com.
Last year in
Moab at the Easter Jeep Safari, Tom had a booth set up where he
was making and repairing drive shafts for people. There was almost
always a crowd around his booth. At first, I thought that lots of
people must have needed stuff worked on. But after watching for
a while, it was kind of entertaining. It was like watching an artist
paint. Tom's knowledge and ability to create, in my opinion, the
perfect drive shaft left no questions in my mind about where to
turn. He likened the difference between a custom shaft and a pre-made
shaft to the difference between an off-the-rack suit and a custom-tailored
a drive shaft, you must first install the SYE kit in order to have
proper measurements. I called Tom to order my drive shaft he had
me measure the distance from the rear of my transfer case to the
center of the u-joint on the rear axle side. He used this measurement
to perfectly fit the drive shaft to my Jeep. Since the shaft
is longer than the factory shaft by several inches, we had the ability
to use a C/V joint at one end of the shaft. By basically using 2
u-joints working together, the C/V joint helps even more with the
shafts overall angle, and therefore its ability to reduce vibrations.
The shaft also incorporated an expandable section in the middle
to allow for the travel of the suspension.
When my shaft
arrived two days later I was very impressed with the craftsmanship
and overall quality. The polishing and clear coat also made it very
pretty. So if my Jeep ever falls over I can take it out and use
it to signal for help! (Ok, so that may never happen, but it does
add a very nice custom look!) Editor's
Note: Be sure to plan accordingly before doing the installation
and keep in mind the wait for the drive shaft to be built. Tom typically
turns a shaft around within a day or two and will ship overnite
if you need it in a hurry. He also offers extended replacement warranties
on his shafts.
and Bears OH MY!
are many things in this world to be afraid of and installing a SYE
kit should not be one of them. Many people I have talked to seem
to be afraid to take their transfer cases apart to do the install.
The truth of the matter is that the transfer case is one of the
simplest pieces of machinery in your Jeep.
Last year I
went to Arizona to meet up with Don Bernier and the Geckos for the
Goodyear Extreme Rock Crawling Championships (which they won, by
the way). On the way down there I blew up an NP231 transfer case
in my 1987 Wrangler. The case that had 280,000 miles on it finally
wore out the range shift fork. I found myself stranded at a hotel
in Phoenix, AZ. With some advice from then JP Magazine Editor, Rick
Pewe' I was able to find the parts at a local shop. I was able to
rebuild the transfer case in the parking lot of the hotel with a
socket set, a few wrenches and a flat blade screwdriver. Although
it can be pretty simple stuff, if you don't feel comfortable with
it, you can always take it to your local shop and have them do it.
We did our
install of the JB conversions kit with the Tom Wood Drive shaft
in a very tight residential garage. It is actually possible to do
the install without taking the transfer case out of the Jeep, however,
we have just found it easier to dive in with both feet, take the
skid plate off and remove the case. You can check out the pictures
to see the steps involved and check out Tom Wood's website for some
took us about four hours to do. The last two hours we worked with
the light of an oil lamp and one candle. As luck would have it,
the power in our neighborhood went out just before we were ready
to re-install the case. Since it was 10:00 PM this made for a VERY
dark garage. I have now added a candle to my trail tool kit. The
one small candle on top of the transmission gave us enough light
to finish the install.
The only part
of the installation that you might not be able to do is press in
the two bearings that were required for the TJ transfer case. Some
cases do not need these pressed in. Just find a local mechanic that
will be willing to press these in for you when you are ready to
do the install. Other than that, it is so simple that you can do
it in the dark!
easy you can almost do it in the dark!
lost power during our installation and had to finish up that
an oil lamp and candles, we finished up the project in the dark.
Read the Installation Notes --->>>