RCU Forums - View Single Post - FS - 56a Alpha bits.... and pieces
View Single Post
Old 07-01-2007 | 11:34 AM
  #6  
w8ye's Avatar
w8ye
My Feedback: (16)
 
Joined: Dec 2001
Posts: 37,576
Received 11 Likes on 10 Posts
From: Shelby, OH
Default RE: FS - 56a Alpha bits.... and pieces

I was looking at the "Data" for the OS 52 and the OS 56a engines and the stroke is the same on he two engines. The 56a has a 1mm larger bore than the 52 and 48. The older OS 48 had a shorter stroke.