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Thread: Purpose of an exhaust port that isn't flush with the piston at BDC?
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Old 06-16-2018 | 04:21 PM
  #12  
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Roelof
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Joined: Aug 2007
Posts: 14,044
From: Holland
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I have the HB Grand Prix .21 engine over here, it has a same look a like piston with piston rings and a cam on the piston.

I still need to build it up as an ideal rain engine for my MRX6

Oh, look here for parts and manuals:
http://www.mecoa.com/hb/parts.htm
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