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   AUTOMOTIVE      Anything to do with cars      2,177 messages   

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   Message 494 of 2,177   
   TOM WALKER to ROY WITT   
   Value tap / cam noise   
   29 Oct 11 09:59:00   
   
   RW>If your Dodge had the Hemi V8 engine, it would have a dual coil over with   
   RW>dual wires, one to a plug in the cylinder under it, the other to a plug in   
   RW>the opposite bank. Yes, they have two plugs per cylinder. One coil fires   
   RW>when the cylinder is near tdc, while an opposite coil will fire the 2nd   
   RW>plug when that cylinder is on an exhaust stroke. All in the name of   
   RW>emissions control. Someone told me a hundred years ago that the Chrysler   
   RW>hemispherical combustion chamber was inefficient and I guess this proves   
   RW>it.   
      
   Think that could be a reason for the Performance advantage??   
   ---   
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