Isuzuperformance Cam Angle Sensor Seal Set for 4XE1 DOHC and 4XF1 Isuzu Engines.

For the following vehicles with 4XE1 and 4XF1 DOHC engines:

• Lotus Elan M100 - Turbo
• Isuzu Impulse RS AWD Turbo -ALL   
• Isuzu Gemini JT191S - ALL 

X-Ring Seals - Viton Fluoroelastomer

Description

This is a set of two x-ring seals.  One to seal the base of the Cam Angle Sensor at the aft or transmission end of the exhaust camshaft, and the a second to seal the block off plug at the aft or transmission end of the intake camshaft.  Set includes two x-rings made of Viton Fluoroelastomer.

This is the most common point of oil leak, which runs down the end of the cylinder head, puddling on the transmission bellhousing.  The oil will pick up dirt and road grit, making a filthy mess.  The leak is usually unnoticed because it is covered by water pipes and hoses, vacuum hoses, and sections of wiring harness.  Left to leak, oil will begin running down the front and back of the transmission bellhousing and engine block, dripping on the ground.  And this leak leaves a particular mess for anyone attempting to work on the engine.

The original o-rings are round shaped Buna made of Butadiene rubber.  Buna rubber is rated to 250 degrees Fahrenheit.  The engine cylinder head that they are installed into regularly exceeds that temperature rating.  The o-rings do not hold their round shape for very long at these high temperatures when used in the square groove of the distributor, cam angle sensor, and block off plug.  Within six months, the round o-ring becomes square or rectangular in shape and begins to leak, then turns hard and brittle, soon cracks, and within a short time, oil is running down the side of the cylinder head in a steady stream.  

Viton Fluoroelastomer is rated to 400+ degrees Fahrenheit, providing a significant improvement in temperature resistance and significantly increasing the life of the ring.  Viton is a fluoropolymer elastomer, made by Dupont Corporation, and should be recognizable to gear heads because it is also used to coat the top and bottom embossed layers of multi layer steel (MLS) cylinder head gaskets made by Cometic and other high quality high performance gasket manufacturers.  When compared to Buna, the Viton material provides much better resistance to oils, hydrocarbons, ozone, gasoline, and the various substances and chemicals that are common to the engine compartment of an automobile.

Taking this one step further, the shape of these rings has been optimized to match the groove they are to be installed into, and to provide superior sealing over a regular, round o-ring.  The cross section of these rings is a "X", hence the name "x-rings".  This shape provides two outer sealing surfaces, and two inner sealing surfaces, twice as many as a round o-ring.  In addition to this, the shape of the x-ring matches the square groove it is being installed into, reducing deformation and maintaining the a seal longer.  Let's face it, it never made much sense to cram a round o-ring into a square groove, bake it, and turn it into a rectangular, hard, brittle, leaking mess. 

Viton Fluoroelastomer rings are quite a bit more expensive than Buna o-rings, and x-rings are typically twice as expensive as o-rings, or more.  But we made a bulk quantity purchase of these x-rings, making it possible to offer them for a fraction of what they usually cost.  

 

Item Specifics 

Set of Two X-Rngs: