Spark plug options

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HMBAtrail
Posts: 93
Joined: Wed Aug 16, 2017 4:07 am
Location: Indpls, IN

Spark plug options

Postby HMBAtrail » Fri Mar 01, 2019 5:53 pm

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.
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double diamond
Posts: 557
Joined: Thu Apr 28, 2011 1:20 am

Re: Spark plug options

Postby double diamond » Wed Mar 06, 2019 6:21 am

C7HSA for the secondary plug. B6HS for the primary.

Matt
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LaceyDucati
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Re: Spark plug options

Postby LaceyDucati » Wed Mar 06, 2019 10:19 pm

For race use NGK grade 9's both plugs.

Nigel
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