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Home » Public Forums » GMCnet » [GMCnet] Engine Storage - Desiccant Spark Plugs
[GMCnet] Engine Storage - Desiccant Spark Plugs [message #148075] Fri, 28 October 2011 19:35 Go to next message
USAussie is currently offline  USAussie   United States
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
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Senior Member
G'day,

Aircraft engines are stored with desiccant spark plugs to protect the cylinders / rings from rusting. I had been looking for some
for automotive engines for yonks (Aussie for a long time) but never could find them. I just did a Google search for "Car spark plug
desiccant" and up popped:

http://www.mossmotors.com/Shop/ViewProducts.aspx?PlateIndexID=96581

At $120 for eight they ain't cheap!

Regards,
Rob M.

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Regards, Rob M. (USAussie) The Pedantic Mechanic Sydney, Australia '75 Avion - AUS - The Blue Streak TZE365V100428 '75 Avion - USA - Double Trouble TZE365V100426
Re: [GMCnet] Engine Storage - Desiccant Spark Plugs [message #148082 is a reply to message #148075] Fri, 28 October 2011 20:25 Go to previous message
Ken Burton is currently offline  Ken Burton   United States
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
Senior Member
That is a great find. I have also looked for these in an automotive threaded plug and could not find them.

I have thought about making some of these out of spark plug bottoms and clear plastic hose filled with desiccant. The amount of desiccant available would only be limited by the length of clear hose used.

Two years ago I almost bought an airplane engine out of a wrecked Velocity that have been sitting for 8 months in Florida. When I checked it over prior to purchase I could crank the engine by hand but not a complete revolution. The rings on one cylinder were hitting a ridge of rust in one cylinder.

The point is this happened after only 8 months of sitting inside a hanger in Florida. I passed on the engine.

I have found that I can dry desiccant in a microwave much quicker that baking it in an oven. The key is doing it at lower power rates and checking it every 30 seconds or so for to make sure it does not get too hot. I also have a vacuum cabinet so I heat the desiccant to about 275 degrees and then throw it in the vacuum cabinet to finish removing the final amount of moisture. The whole process take less then 15 minutes. The final vacuuming is not necessarily required.


Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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