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Spark plug options

Posted: Fri Mar 01, 2019 5:53 pm
by HMBAtrail
For a 350 with a dual plug setup, what plug options are you fellers going with? Yeah, I know it’s very bike specific but a baseline (primarily for the second plug) would be appreciated.

For what it matters, Omega hi Comp Piston, Lacey 277 cam, coil springs, 7mm 40/36 valves, Electrexworld crank mounted ignition, custom exhaust with Cone Engineering silencer.

Re: Spark plug options

Posted: Wed Mar 06, 2019 6:21 am
by double diamond
C7HSA for the secondary plug. B6HS for the primary.

Matt

Re: Spark plug options

Posted: Wed Mar 06, 2019 10:19 pm
by LaceyDucati
For race use NGK grade 9's both plugs.

Nigel