Is a slip yoke eliminator necessary?

Is a slip yoke eliminator necessary?

The installation of a slip yoke eliminator is not necessary on any vehicle that retains its stock ride height. This is due to the fact that a standard slip yoke is designed to provide ideal driveline geometry for the vehicle on which it is installed.

What does a slip yolk Eliminator do?

Slip Yoke and Slip Yoke Eliminator

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 do I know if my slip yoke is eliminator?

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).

How do you install a slip yoke eliminator XJ?

So you have to have a drive shaft that has a double carded joint in it now. Just for the time being you can actually use a stock. Front drive shaft for your Jeep Cherokee to use in the rear.

What is meant by U joint phasing?

Phasing is the process of aligning the universal joint yokes on both ends of the drive shaft (or double u-joint) in a parallel fashion. If the joints are not properly phased, they will operate at varying speeds throughout each revolution which can cause second-order vibrations.

What is a double cardan driveshaft?

Double cardan shafts utilize multiple u-joints with a center ball to solve the vibrations caused by an increase in drive line angle. Driveline vibration can occur for multiple reasons. When a vehicle is lifted the angles of the drive shafts become greater.

Is the NP231 a good transfer case?

The New Process 231 transfer case is one of the most common and durable transfer cases ever produced. Found under Jeep Wranglers, Jeep Cherokees, Dodge Rams, and Chevy S-10 Blazers and pickups, the NP231 has proved itself reliable under some of the most hardcore rigs.

How much travel does a slip yoke need?

DD: The slip yoke should be able to go into the tailshaft of the transmission so the barrel is fully inside the seal. Then, pull out the yoke 1 inch. This is the correct amount of spline contact for the slip yoke.

How far does drive shaft yoke go into transmission?

3/4″ is recommended by most driveshaft builders, car sitting in its ride height.

What is the best driveline angle?


Most driveline companies recommend operating angles of 3° or less for maximum u-joint life. There should be a minimum of ½° to allow the needles to rotate. The higher the operating angle, the more likely your vehicle will develop a vibration at high driveshaft speeds.

What happens when a driveshaft is out of phase?

If the driveline is left out of phase even the small unfelt oscillations and unbalances will wear on the driveline components and eventually lead to failure. U-joints, transmission output seals, and differential seals will all be placed under the stress of the driveshaft moving up and down.

What is the advantage of a double cardan joint?

The real benefit to a C. V. (double cardan) drive shaft is smoother operation at higher operating angles and longer life. The C.V. assembly works by intersecting the joint angles at the center pivot point and delivering a smooth rotational power flow or surface velocity through the drive line.

How much driveline angle is too much?

Ideally, both driveshaft-operating angles will be 1 to 3 degrees. Anything over 3 degrees at the rear axle will shorten your universal joint’s life and could create vibration. If your angle is larger than 3 degrees, you must make sure not to exceed max driveshaft RPM as shown on this Spicer table.

Which transfer case is better 231 or 242?

Down and dirty the 231 is slightly stronger, has more aftermarket upgrades available and is probably more suited to the hard-core Jeeper types. The 242 has everything the 231 has PLUS Full-time, on the road, All Wheel Drive.

How much power can a NP231 handle?

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.

How far should yoke go into transmission?

How far out can a slip yoke be?

How much play should a slip yoke have?

For safe and stable operation, the slip yoke and spline should maintain at least 2 inches of engagement at all times.

How much travel should a slip yoke have?

For safe and stable operation, the slip yoke and spline should maintain at least 2 inches of engagement at all times. That means that however long your spline is, you can subtract two inches from that to get your usable range of travel.

How much pinion angle is too much?

According to Currie, the average car crafter should strive for between 1 and 3 degrees between the tailshaft of the transmission and driveshaft, and 1 to 3 degrees between the driveshaft and pinion. Furthermore, the two angles should be nearly equal (between 1 and 3 degrees), but always opposite (see crude diagram).

What are the 3 most common things that can cause vibration in a drive shaft?

Some of the most common causes of vibrations in the driveline are slip splines or U-joints being worn, components that are out of balance, misaligned angles or out of phase yokes, getting close to the critical speed range, or yoke ears that are not coordinated with the splines.

How much drive shaft angle is too much?

Most driveline companies recommend operating angles of 3° or less for maximum u-joint life. There should be a minimum of ½° to allow the needles to rotate. The higher the operating angle, the more likely your vehicle will develop a vibration at high driveshaft speeds.

Which Jeep transfer case is best?

Top Jeep Transfer Case Swaps

  1. NP205.
  2. NP241OR.
  3. Advanced Adapters Atlas II.
  4. JB Conversions Lo-Max 205.
  5. Dana 300.
  6. Stak 4×4 Monster Box.
  7. Hi Impact.
  8. NP242.

How far should slip yoke go into transmission?

CC: How much should the front yoke of a driveshaft engage the output shaft of the transmission? DD: The slip yoke should be able to go into the tailshaft of the transmission so the barrel is fully inside the seal. Then, pull out the yoke 1 inch. This is the correct amount of spline contact for the slip yoke.

What is the best pinion angle?

between 1 and 3 degrees
According to Currie, the average car crafter should strive for between 1 and 3 degrees between the tailshaft of the transmission and driveshaft, and 1 to 3 degrees between the driveshaft and pinion. Furthermore, the two angles should be nearly equal (between 1 and 3 degrees), but always opposite (see crude diagram).

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