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Platinum plugs still have a copper core. The only platinum is on the very tip of the center electrode. Its all about the small diameter fine wire electrode design, which requires platinum to reduce the wear...otherwise the small wire electrode would only last a very short time.
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Brian
93L - 5SP, FMS springs, 323 alloys, 1st gen B6, ported head & intake, FMS cam, ported exhaust manifold w/2-1/4" head pipe.
04 Mustang GT, 5SP, CAI, TFS plenum, 70mm TB, catted X, Pypes 304SS cat-back, Hurst Billet+ shifter, SCT/Bama tuned....4.10's & cams coming soon
62 Galaxie 2D sedan project- 428, 3x2V, 4SP, 3.89TLOC
1 wife, 2 kids, 9 dogs, 4 cats......
Not enough time or money for any of them
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