We don't really *need* dual plugs in such low volume firing chambers. Dual plugs are an adequate solution for jugs with massive volumes. For smaller engines, they just give another place for the head to crack and serve no useful purpose. Engines are so reliable these days, when was the last time you heard of a plug breaking down in a normally maintained engine? So if you have the choice, one plug per cylinder in normal sized jugs is just fine.
On 12/09/2015 07:44 AM, Roger Bulla via KRnet wrote: > > > -----Original Message----- From: Donald Laverick via KRnet > Sent: Tuesday, December 8, 2015 11:38 PM > To: KRnet > Cc: Donald Laverick > Subject: Re: KR> GPASC dual-plug 10mm plugs? > > > > Sent from my iPad > > Don't forget my spark plug question. Plug wire info would be good too. > > > Mark > > I was using NGK C7HSA spark plugs for the secondary. I didn't have > any trouble and the always looked good when inspecting them. For the > wires I was using 7mm resistance wire I got from NAPA. I just used > bulk wire and the need hardware. > > Right now I am using heads with a single plug and using the NGK > equivalent to Bosch W7CC , again with 7MM resistance wire. No problems. > > Roger Bulla > rbulla2 at wic.net > > > > > > Thanks, >