Mailing List flyrotary@lancaironline.net Message #37761
From: Ed Anderson <eanderson@carolina.rr.com>
Subject: Re: [FlyRotary] Re: Spark Plug Cleaning
Date: Fri, 8 Jun 2007 21:07:03 -0400
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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Here is somebody who pretty much sums up what my research has turned up on Lead solvents - the only one I found was nitric acid - which I will pass on {:>)
.
 
There really is no lead solvent. Any chemical that will desolve lead will likely disolve YOU. Years ago, before people knew better, shooters used mercury. This amalgamated with the lead, and the material could be brushed out. The only problem: mercurey will make you crazy, then dead!!

A good non dangerous to you, and non damaging to the bore cleaner is the Lewis or Hopies lead remover kit. You can also buy a "lead remover cloth" at most gun shops. Cut this into patches and run them down the bore.
 
 
Ed
 
----- Original Message -----
From: Jeff Owen
Sent: Friday, June 08, 2007 8:47 PM
Subject: [FlyRotary] Re: Spark Plug Cleaning

Ed,
 
There is an electro-chemical process shooters use to remove lead from a gun barrel which might work if this is an elemental lead deposit.  Take a look at: http://www.outers-guncare.com/products/chemicals/foul_out_system.aspx 
 
Jeff Owen
-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Ed Anderson
Sent: Friday, June 08, 2007 1:11 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Spark Plug Cleaning

Getting around to see what can be done about the lead fouling sparkplugs  causing the infamous "SAG".  1st experiment was to place the used spark plugs in a 30% solution of Hydrogen Peroxide.  I did that and place the plugs and solution in an ultrasonic cleaner, turned it on and left it on for 1 hour.
 
It appeared to clean everything off the plug - but, the lead.  So far the only chemical my research has indicated would dissolved metallic lead is Nitric Acid.  Nope, not going to try that, I'll stick with buying new plugs.
 
But, thought I would let folks know of the results.  I was really hoping the ultrasonic vibration would shake the lead crystals off the ceramic cone of the plug - but either the idea is flawed or the small jewelry cleaning size ultrasonic generator is simply not powerful enough.
 
Ed
 
 
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