Hey paul
Just reading about the hi temp epoxy issues. Now I'm not doing a p-port on my engine so forgive me if this doesn't make any sense. Is there any way to use a roll pin or spring pin to hold the intake tube into the side of the housing if you could pin it you would only need the epoxy to back fill any gaps better yet would be a press fit with a pin. You wouldn't need much say 1/16 or 1/8 in pin drilled through the side of the housing through the port tube, bang the pin in. When you reassemble the engine the pin is sandwiched like everything else. There would be no way for it to come out. I can only guess as to the amount of turbulence the pin may cause but being so small it may be negligible. I'm sure the hi tech epoxy's are wonderful stuff but reading what you guys want to do with it. You may be asking it to do more than it is designed for. A better solution might be finding a way to keep that tube in there with a real piece of metal maybe a tube with a collar on it or some sort of L bracket there has to be a better way to secure that into the engine. here are some autocad drawings not to scale.

Tony

There have been dozens if not hundreds of p-port engines built like
this in the last 30 years and they give no trouble. Some p-port
3rotaries are making 1200 HP with bonded in tubes. Epoxy is good for
about 3,000 pounds per square inch shear load.

Paul Lamar


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