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Antique Gas Engine Discussion

McCormick Deering / IHC old iron

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Old 02-04-2019, 12:49:30 AM
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Junkologist Junkologist is offline
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Default Re: McCormick Deering / IHC old iron

Lots of guys run white has or naphtha in their engines since it wonít cause problems from sitting, but you can run regular pump gas too with no problems, but donít leave the engine sit with gas in the tank. Youíll have problems if thereís ethanol in the gas. You mentioned being involved with aircraft repair. If you have access to avgas, thatís also a good option for fuel that wonít cause problems from sitting, which you are probably already aware of.

Hereís a video of my gasoline only IHC M. Yours should be the same.


Check out my engine videos at
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Old 02-04-2019, 03:42:17 PM
Andrew Mackey Andrew Mackey is offline
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Default Re: McCormick Deering / IHC old iron

I would use high test fuel, if available. It has less alky then regular. E-10 id hygroscopic. That means it draws water out of the air (humidity). This in turn causes rusting in the tank, and phase separation which will ruin your fuel pump. If you plan to let the engine rest more than a week, I would drain all gas from the tank, and run the engine dry - out of fuel. Dead gas can cause all kinds of problems.
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