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Old 05-27-2012, 06:10 PM   #9
Low Budget
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Joined: May 2011
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Not sure how this will tie into your design theorys, but, sometimes builders use thermal retention pipe wrap on expansion chambers to increase the working temperature of the pipe itself.

You see this on two stroke snowmobile race engines sometimes. No idea the adverse effects if run in a application where it would make the pipe run too hot.

Most also run EGT sensors a specific distance from the piston skirts in the headpipe of the expansion chamber to keep a close eye on how hot things are running, and to help judge if their air / fuel mixture ratio is right at different throttle positions.
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