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Old 03-08-2006 | 12:18 PM
  #4  
bjmjs
 
Joined: Nov 2005
Posts: 68
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From: Franklin, OH
Default RE: ryobi engine conversion
I just sent my twin ring piston to Frank Bowman to have his rings installed. I did a search in the forums for -Bowman- & I read in more than one thread where they were getting at least 500 rpm's & some up to 800 more rpm's with Bowman rings than stock rings. Here is his contact info.

Frank Bowman
1211 N. Allen
Farmington, NM 87401
(505) 327-0696
[email protected]
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