Used CPU heat sink from an old pc. Perfect size to bolt 2 coils to.
  A little dielectric grease under the coils, tap 2 holes for the coil
  hold down bolts and 2 to mount it with and presto it works.
  I did both sets the same way.

  Kevin Alderman.

  Did you sand them flt on the bottom?


  Paul Lamar


  As much as I dared to sand- I expect there is a slight bit of
  concave left. I actually put them on twice to see how much of the
  dielectric was pushed out and how much stayed. There was a film of
  dielectric about the same thickness as was on the CPU they came from.
  With the apparent issues with heat and these coils, you would think
  Mazda would have made them flat and mounted on a heat sink themselves.
  Kevin Alderman


  With a fixed dwell time of 4 ms average current increases with RPM.
  Cars never run
  at 6000 RPM continuously. That is well over 100 MPH in sixth gear.


  Paul Lamar


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