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Old 10-13-2012, 03:34 PM   #19
R100RT Mark
Gnarly Adventurer
 
Joined: Feb 2011
Location: Georgia, USA
Oddometer: 296
Quote:
Originally Posted by Airhead Wrangler View Post
From '85 on, I believe it's just combustion chamber diameter. Depth is the same, I think. Valve sizes are the same………
So, castings the same, just machined differently. Yes? Valve seats in the same position?
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Mark

Current - '74 TR5T : '93 R100R : '06 ST3s
Past - Variety of British, French, Italian, Czechoslovakian, and German bikes from the '70s, '80s and '90s
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