Author Topic: Step in the exhaust port  (Read 555 times)

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Offline SquareFile

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Re: Step in the exhaust port
« Reply #30 on: November 20, 2018, 09:10:25 am »
Older thread but the topic interested me studying cylinders. I feel the step down is more of a "shelf" for ring support on a downward angled port. Remove it and I'm sure bad things are going to happen. JMO, it's not for performance, tho it could aid. I have no proof it does or does not.
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