View Single Post
Old Dec 19, 2007 | 11:45 PM
  #6  
paprst's Avatar
paprst
Part of the Furniture
 
Joined: Jul 2007
Posts: 169
Likes: 0
Default

The RSI head has larger inlet and exhaust ports then the XR3
I think only the exhaust ports are larger . otherwise it would need more rich mixture (fuel-air)
Reply