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Old 05-19-2017, 08:43 AM
DRK DRK is offline
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Default Square or round exhaust port?

Which cylinder is best for performance on a stock 66cc CG motor and why? Trying to learn.

Last edited by DRK; 05-19-2017 at 08:55 AM.
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Old 05-19-2017, 08:54 AM
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Dan Dan is offline
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Default Re: Square or round exhaust port?

If I am understanding your question correctly, DRK. I don't personally think one has an advantage over the other, other than the more fin, surface area, the better cooling capabilities.

Other than that, I don't think aside from aesthetics, one is any better or worse.

I'm looking forward to seeing what other folks think, though.
Just my 27 cents. (inflation)
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Old 05-19-2017, 05:39 PM
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MotorBicycleRacing MotorBicycleRacing is offline
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Default Re: Square or round exhaust port?

Quote:
Originally Posted by Dan View Post
If I am understanding your question correctly, DRK. I don't personally think one has an advantage over the other, other than the more fin, surface area, the better cooling capabilities.

Other than that, I don't think aside from aesthetics, one is any better or worse.

I'm looking forward to seeing what other folks think, though.
Just my 27 cents. (inflation)
Square or round exhaust port?

OP didn't ask about the cylinder shape.

The shape of the exhaust port which you obviously can't see when the
exhaust is bolted on the cylinder.

Round should theoretically be better but on these motors there are too
many variables to consider.

That's my 2 centavo's
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