Author Topic: Step in the exhaust port  (Read 2097 times)

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Offline KilliansRedLeo

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Re: Step in the exhaust port
« Reply #10 on: May 28, 2014, 05:32:49 pm »
Adam, that is the way it appears to me. Perhaps as Randy mention in another post somewhere, he was experimenting with getting more performance while keeping the noise down. Another dynamic might be that the additional drop in pressure has an effect on mufflers that are particularly restrictive. Just a WAG, but something to think about, if you look at the saw models that Farmboy mentioned in his post.

OBTW, had a shot cylinder that I tried to grind the step into, across the bottom is not too bad but up the sides and across the top is a huge **** especially if you are trying to keep all sides square to each other as well as to the exhaust exhaust nozzle. In the 4-stroke motorcycle world the face of the step had to be at 90° to the flow. Had no plan in mind just trying to see how hard it is to do......I won't be trying it again.
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