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Hagle347
 Post subject: NACA Inlet for cowling
PostPosted: Sun May 13, 2018 7:22 pm 
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I've been doing internet research on sizing for NACA inlets. Trying to figure the size I'll need for the IO-320. I have a figure of 250 Cu feet of air required for the engine displacement. Anybody else out there using a NACA inlet instead of a scoop on the bottom of the cowl. Most photos in the Gallery show scoops. The others I know of take air once it's in the pressure cowl area. It's time to cut and I'd rather do it right the first time....

Thanks, Terry


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1albee
PostPosted: Mon May 14, 2018 3:26 am 
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Terry,
I installed NACA inlets on my Twin Comanche that has IO 320 B1A's. I bought the kit from Knots 2 You about 15 years ago as a STC kit, and they have worked great. There unit housing includes a area for a bracket air filter element and a very easy disconnect / connection method of mounting. You may want to look at there web page for ideas. This mod has been approved by the FAA as a STC and has gone through all of the hoops associated with that approval, that may make cutting into the cowling a little less stressful.
Phil
118BC


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Hagle347
PostPosted: Wed May 16, 2018 6:55 pm 
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I found a Naca inlet with a 2 1/2 outlet that will feed air to the inlet for the fuel servo. It’ll get delivered next week and I’ll let you know how stuff progresses


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