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Old 08-04-2003, 12:18 AM
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Rick Parker Rick Parker is offline
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Join Date: May 2001
Location: California, Ca
Cobra Make, Engine: NAF 289 Slabside Early Comp Car with 289 Webers and all the goodies. Cancelling the efforts of several Priuses
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J P:
For the record: The Champion "C" Series is a 14mm .750 reach with a 5/8" hex. The C57C is a regular gap ie: non-extended tip electrode. There are 6 heat range options in this design & size.
C53C (cold), C55C, C57C, C59C, C61C to C63C (hot). It appears to be a relatively cold plug. This design by nature lends itself to disapating heat quickly because the tip is not exposed like an extended tip plug. There are trade offs in the various designs. You can call Champion Motor Sports Hotline @ 1-900-786-RACE to assist with choosing the correct plugs. It says $2.00 minute (ouch!). Champion publishes a small pocket sized racing heat range book that is hard to find, but contains a wealth of information. Champions are available from Summit Racing.

Good luck..........

Rick
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