Most power out of a built XR600/628/640/660?

3 replies to this topic
  • HeadTrauma

Posted October 29, 2004 - 09:25 PM


Just wondering what the most pump-gas horsepower you can get out of an XR600 based engine is. All I can compare it to(and its not really a comparison) is a 650R. Also, how badly does building the engine affect lengetivity?

  • HeadTrauma

Posted October 30, 2004 - 10:26 PM


25 hours & 1 minute later, safe for TTT ^

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  • BWB63

Posted October 31, 2004 - 08:29 AM


I got 48 RWhp out of my XR620R mild cam, wisco piston 12:1 piston (bad choice)

  • HeadTrauma

Posted November 01, 2004 - 09:36 PM


TTT ^. I did a search before ever posting, BTW.

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