Thanks Lynn
Steve

> On 18 May 2020, at 8:40 am, lehanover lehanover@aol.com <flyrotary@lancaironline.net> wrote:
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> The most common plug used in racing is the NGK R6725-11.5 heat range. Expensive to buy but Mazda gifted those to racers so my guess is that Mazda thought them to be the ones to use.
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> Before Mazda we used Champion N-57-G (gold palladium) fine wire center electrode. That is an old number so you have to check with Champion to get a current number.
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> Champion gave those away to racers as well. Never a problem. I gave those to piston powered racers who had trouble with running street plugs in race cars.
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> My ignition system was two MSD 6ALs  with plugs gaped at .010" to .012". Both plugs fired at the same time. MSD Blaster coils. 1984 Mazda electronic distributor with
> no vacuum advance and advance weights brazed solid. Start and run on full advance. (9,700 RPM rev limiter chips). Never a problem. This causes more than 50,000 volts to the plug.
> One day I was adjusting the idle oil pressure on the dry sump pump while warming the engine for the first session of the day. I got my left hand too close to the front leading plug boot. The last thing I remember was that a bright blue lightning bolt extended from the silicone plug boot to my Twistoflex. I took a short nap. The crew guy shut the engine off at 190 degrees as usual.
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> If you have a pacemaker, do not screw with an MSD or a Mallory HiFire.
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> Any Question-Any time.
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> Lynn E. Hanover  
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> In a message dated 5/16/2020 7:23:08 PM Eastern Standard Time, flyrotary@lancaironline.net writes:
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> Lynn,
>
>               As usual great advice.  I note the advice for “cold” plugs.  Care to recommend which ones??     Thanks Neil.
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>  
> From: Rotary motors in aircraft <flyrotary@lancaironline.net>
> Sent: Saturday, May 16, 2020 10:53 PM
> To: Rotary motors in aircraft <flyrotary@lancaironline.net>
> Subject: [FlyRotary] Re: Water Pump
>
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