I was thinking of installing a NACA style intake on the right side of my cowling to duct air through a short run of SCAT tubing to cool the gascolator. I'm going to enclose the gascolator, which is on the passenger side bottom corner of the firewall, on three sides with a one piece shield, with the fourth side being the firewall. There will be a 2" diameter inlet on the top to attach the SCAT tubing. Have any of you used a NACA type inlet to do this and for you engineers out there, will I incur more cooling drag inside the cowl since the air coming out would have to exit the cowl at the bottom cowling air outlet? Would this in any way reverse pressurize the cowl from inside and below the engine and inhibit the airflow down through the cylinders thereby causing increased cylinder temps? All of this, as opposed to simply attaching a 2" duct in the baffling to let pressurized air blow down through the duct work to cool the gascolator. Could I get some thoughts and feedback on this?
Also, looking at the front of my cowling which I am trying to complete the construction of (pictures at: sharkdri...@zoomshare.com), would a NACA type intake on the front underneath the prop inline with the carburetor serve well as a ram air intake as opposed to the round or square air intakes so common on the KR's? I've been looking at the NACA ducts and many of the ones used for cars have the outlet set at about 45 degrees to the face of the NACA duct intake. This would just about match up with the inline ram airflow coming straight at the front of the cowling. I checked with Aircraft Spruce and they no longer carry the NACA inlet assemblies or kits so I've been looking online at race and stock car suppliers. This is asking a lot of questions but I know that's what this forum is all about, right? So, for those of you with your thinking caps handy, I'm anxious for some logical and/or practical feedback on these ideas. Thanks for any replies either direct to my E-mail or on the KRnet. There may be others who would like to hear your thoughts so the KRnet would be a good reply method. I know I get a lot of useful information off of it from those who post to it regularly. Thanks, Neal Hornung lt1corve...@earthlink.net Phone: 567-204-2167
