Pelican Parts Forums - Which spark plugs to use.

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Brent Lineker

08-20-2007 01:28 PM

Which spark plugs to use.

I have a 1975 911S with the stock bosch cdi box,stock coil and rotor and cap.I have the 40IDA webers also,which plug should I be using,the plugs currently being used are Bosch W7DC Super RD.Thanks

Steve@Rennsport

08-20-2007 02:32 PM

Brent:

Use either Bosch W5DC, W5CC (silver) or NGK BP-6ES.

Bosch 7's are too hot for driving and best used to adjust the Webers when it must idle for periods of time,...:)

911s55

08-20-2007 02:41 PM

Ditto on Steve's recommendation, it's what I'm using, 74' 2.7, Weber 40 IDA's, gapped at .032"

Brent Lineker

08-20-2007 02:49 PM

Thanks Guys I appreciate the advice.

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