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Your Price $151.95
You save: $8.00
This Item has a $25.00 core charge.
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Vibration Dampener It might surprise you to know that the A-Series engine has a vibration problem! But the factory has known it for years and designed a "dampener" to help absorb or counter balance this problem. The nature of the engine results in vibration that can result in crank bearing being knocked out! The uncomfortable feeling of the engine vibration is a problem, but losing the bearing can be a disaster. The most common dampener is a "one-piece" affair that is actually a pulley with a outer metal ring connected to it with a special vulcanized rubber. Great, simple design. But this same design has an inherent problem- as the rubber dries-up and/or is exposed to oil, dirt, etc. it cracks and stops "dampening". In severe cases this one piece affair has actually separated at the rubber resulting in all kinds of destruction! Check the back side of your dampener the next time you are in the engine bay- it could scare you! Core charge will apply.
Thickness from front to back of pulley is 1.2"
Mini Harmonic Damper
Are you familiar with the term ‘torsional vibration’? Well, torsional vibration is simply a periodic vibration which would result from the twisting of an object around its axis. In your Mini engine, this vibration would be expected to originate from the crankshaft as the engine tries to turn it. Excessive torsional vibration, however, is unwanted because it may cause various damages not only to the crankshaft but to the engine itself. Simply put, each time that the air/fuel mixture is ignited within the engine’s cylinders, the combustion causes an extreme amount of cylinder pressure. This cylinder pressure is applied to the pistons and then to the connecting rods and is transferred to the crankshaft. This downward force makes the crankshaft turn. Because this pressure is so great, it produces a torsion vibration from the pistons and incorporated with the crankshaft vibrations causes the crankshaft to twist and deflect causing an action referred to as "tortional harmonic vibration."
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