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Rotary Tech - General Rotary Engine related tech section.. Tech section for general Rotary Engine... This includes, building 12As, 13Bs, 20Bs, Renesis, etc...

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Old 01-09-2011, 04:27 PM   #1
Judge Ito
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your exhaust port needs to be beveled. buddy you need to make sure all sharp edges are beveled.. u need a 2mm bevel. gets me upset to still see ports like this.
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Old 01-09-2011, 04:32 PM   #2
To_Slow
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Quote:
Originally Posted by Judge Ito View Post
your exhaust port needs to be beveled. buddy you need to make sure all sharp edges are beveled.. u need a 2mm bevel. gets me upset to still see ports like this.
Thanks for the advice, ran this port in many engines, with out any issues..
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Old 01-09-2011, 06:55 PM   #3
Judge Ito
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Originally Posted by To_Slow View Post
Thanks for the advice, ran this port in many engines, with out any issues..
be open to advice. just because you run this port like this, doesn't make it right. Brian (BDC Motorsports) also learned the hard way. He ran similar ports to you. why do you think Mazda runs a 2mm bevel on the factory exhaust port on rotor housings? plain and simple to protect the apex seal when the apex seal is closing the exhaust port. I wrote a thread at nopistons with pictures about this. So relax open your ears and learn.. we never stop learning..
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Old 01-09-2011, 06:57 PM   #4
Judge Ito
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Originally Posted by To_Slow View Post
Thanks for the advice, ran this port in many engines, with out any issues..
and yes it brings issues. the apex seal starts to loose it's radius from smashing on that sharp edge you leave behind.
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