Ahh, ok.
On mine, I'm trying to decide if I should/could arrange something with a "flapper" valve of some sort so I can adjust the heat "on the fly". You know, have the air come straight off the exhaust manifold until it warms up to a certain temperature, and then adjust the flapper so it doesn't get too hot? Maybe a bit like the cowl flaps on an airplane? Dunno - I might be over-complicating it. - - - I have a tendency to do that sometimes.
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