I have a 1" hose that goes to what I think is the regulator/rectifier. It's been so long since I've done any engine work I don't even remember what the components are now!

Anyway, I wanted to route this to a NACA scoop on the side of the cowl, but I can not find where to buy a plastic or fiberglass NACA scoop for a one inch hose. All of them are for a 2" hose.

What did you all do? Where are you getting cooling air from? My cowl is ready to paint with the exception of maybe adding a nana scoop, so I'd like to figure this out ASAP.

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You sure you need cooling air to the regulator?

The UL Power install kit comes with all the plumbing for it so I'm guessing that's a 'yes'!

Mark, most installs I've seen pics of (including mine) take air for that blast tube to the R/R from the rear of the left cylinder bank.  Use a one inch flange for ducting https://www.aircraftspruce.com/pages/ha/flanged/ductflanges.php cut a hole, rivet flange, clamp hose, done.

David is right - it was the way UL instructions said to install the cooling hose.  I did mine on

the right, but it doesn’t matter which side.


Dave does your side nacho scoop go to your cabin heat?



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