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Mozam
Joined: 24 Nov 2006
Posts: 85
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 Posted: Thu May 30, 2013 3:29 pm Post subject: Which auto plugs? |
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As I recently posted, I installed Dennis Savarese's auto plug conversion and am very happy with it.
I was wondering what exact plug you guys have found to work best?
Thanks,
Steve Dalton
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tedwaltman
Joined: 09 Apr 2010
Posts: 15
Location: Denver, CO
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| Posted: Thu May 30, 2013 3:56 pm Post subject: Re: Which auto plugs? |
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NGK BR7HS
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dsavarese0812(at)bellsout
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| Posted: Thu May 30, 2013 4:08 pm Post subject: Which auto plugs? |
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Whatever you do, if you decide to change to a different NGK plug, do not
go up numerically. ie: BR7HS vs. the BR6HS that comes in the kit. The
higher the number, the colder the plug. Keep the gaps to around .020.
You'll find the engine will start and run better by doing so.
BTW, Terry Slawinski installed the "7's" first and found the engine
would run rough, especially at low RPM. I recommended he change to the
"6's" and he's been running them ever since. I believe at least 3
years now. But he does change the plugs every annual. I mention this
because both of you have the PF engines and TW's. FWIW.
Dennis
A. Dennis Savarese
334-285-6263
334-546-8182 (mobile)
www.yak-52.com
Skype - Yakguy1
On 5/30/2013 6:29 PM, Mozam wrote:
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Dale
Joined: 30 May 2007
Posts: 178
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| Posted: Thu May 30, 2013 4:56 pm Post subject: Re: Which auto plugs? |
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I run the NGK BR6 iridium in my PF . Do not gap them as they have machine ground gaps set at the factory and will not foul easily because of the wider angled gap, NGK states that on their web site. The iridium plug has less resistance and can jump a wider spark. The 7 was too cold in my straight M-14 and carbon fouled at times after long ground runs or long taxi's, the 6 never did and runs tan in color where the 7 had the black soot, for kicks we ran some 8,s and it fouled them every time no mater what we did. NGK holds the patent on connecting iridium to a plug. I believe DENSO uses the same technique under the NGK patent.
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