30-Minute U-Joint Upgrade!
If you have ever replaced your u-joints on your Jeep then I’m sure you’ve noticed the little straps holding the u-joint to the yoke. I have always had problems with those straps not fitting right or the bolts breaking off and they seem to wear out rather quickly. I have heard that those straps can be replaced with u-bolts and the u-bolts are stronger. So after a little searching for info I found what I was looking for. I did the conversion and it was real easy and cheap to do and the u-bolts are holding up without any problems. This is all you will need to do the conversion
Build your own drive shaft
Don't be afraid! It's only metal. Shortening, lengthening and re-tubing your own drive shaft is not very hard, but you won't be able to balance the shaft at home. The methods shown in this article are geared towards trail Jeeps that rarely see pavement or trail repairs on any vehicle.
A drive shaft is just a piece of tubing with a yoke at each end to accept a U-joint or a CV joint. The yokes have a shoulder that is a press fit in the tubing to make assembly and alignment easier. The yokes also have a larger shoulder to act as a stop to prevent the tubing from being pressed on too far.
For the best performance and highest level of strength the shaft needs to be straight with the yokes properly aligned. The shaft should also be "in phase." When a shaft is in phase, the yokes at each end line up with each other. When the shaft is "out of phase," one of the yokes is twisted in relation to the other. To make a good drive shaft you need to build a shaft that is straight
Converting 2wd to 4wd in a ZJ
I bought my '98 ZJ 2wd a couple of years ago. After a rearend collision, I decided to convert it to 4wd. The details on the conversion and the parts used are included on my web page.
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by a guest on 12/17/03
Driveline Basics
There are many subtle things about a drive shaft and the conditions it operates in that will greatly affect how well the drive shaft performs. These subtle variables may have a profound impact upon the life of the drive shaft components, the amount of vibration the driveshaft produces, and whether or not the drive shaft is even capable of meeting your vehicle's specific requirements. In this article we'll explain some of these subtle but extremely important variables, teach you about the different types of drive shafts that exist, and help you understand how to adjust the operating angles to ideal for the type of drive shaft that you have.
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Submitted by Code3TJ on 07/27/04
Driveshaft 401
From definitions to operating principles, geometry to maintenance, this is a MASSIVELY detailed look at all you need to know about driveshaft tech. Includes product review of the 4x4 world's finest driveshaft - the famous High Angle Driveline 1350 CV shaft.
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Submitted by Code3TJ on 06/11/04
Guide to Driveshaft Angles
One of the greatest challenges of most swaps is that of drive shaft length and the resulting joint angles. Short wheelbase Jeeps are immensely agile because of their short length. However, the length of engine, gears, pinions and adapters must be considered. Most us would like a six-speed gear box with a 7:1 low and 0.7:1 high, along with a three-range transfer case. More gears means more length. Such a combination is not in the cards for short Jeeps with any sort of lift on them. However, with decent planning and good components, you can put together a Jeep gear train that may amaze you.
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Submitted by Code3TJ on 08/02/04
How to change a u-joint
If you wheel your Jeep often, chances are that sooner or later you're going to break a u-joint, either in the front axle or in one of your driveshafts. That or they will eventually simply wear out with old age and need to be replaced anyway. Changing a u-joint can sound like a daunting task at first, but it's really not that hard and doesn't take very long to do. Here's the steps to change a u-joint in your driveshaft. The process is pretty much the same to change an axle shaft u-joint, only you'll have to do it all twice to get the joint out of both shafts.
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Submitted by Code3TJ on 07/16/04
Slip Yoke Eliminator Kit
It seems that every time that Cole gets something new for Project Cross Trainer, I get conned into helping with the installation. While this is usually for my light-holding or tool-fetching abilities, his latest upgrade actually called upon my specialty; transmissions and transfer cases. After having worked in a transmission shop for 10 years, I have learned my way around gearboxes fairly well. Fortunately for the do it yourselfer, the JB kit does not require an intricate knowledge of the internals of your drivetrain, but just a basic understanding. The only special tools required to dive into this project are snap ring pliers (external), and a torque wrench. The average set of tools should be all that is needed beyond that.
The one thing that will make this project much easier is removing the transfer case from the vehicle. It can be done in the vehicle and the JB instructions will tell you this, but I discourage you from doing it this way. The chance of something falling out of place or not sealing properly greatly increase by doing it this way. Saving an hour by leaving the unit in the vehicle could be lost later in removing it to fix a leak that could have been prevented.
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Submitted by kizer on 12/28/03
SYE in a YJ
After installing a Rubicon Express 4" standard lift on my '88 YJ I came across a common problem which is vibration due to extreme driveline angles, as well as the driveshaft being pulled out of the slip yoke.
Sye Install
These are instructions for replacing the output shaft on a np231 transfer case and installing a Slip Yoke Eliminator. This is intended as a guide line only. During the installs we used two different kits an Advanced Adapters and Bayou Geep kit. The two kits are similar but, the minor differences are important to each kit. So make sure your read the instructions that came with your kit to insure that the work is done correctly.
You need Adjustable rear control arms to adjust the pinion angle after you are done. We got enough adjustment out of the lower arms to set the angle, some Jeeps may need adjustable upper arms as well. Also, you may need rear shock re-locator brackets. Another option to the re-locator brackets is flipping the shocks so the canister in up, you will need to check with your shock manufacture to see if this may be an option for you. One other thing that can be done regarding this is, to cut away part of the rear lower spring perch allowing the shocks full travel without hitting. This is your call, what ever works in your situation.
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