Use xs1100 carburetors on a xs850

Yamaha XS 850 discussion forum:


Use xs1100 carburetors on a xs850

Use xs1100 carburetors on a xs850 
Des-Rez said 2011-09-05 10:32 
 
I have a Yamaha xs850.
The displacement= 825 cc / 3cylinders = 275 cc per cylinder
A Yamaha xs1100 has a
displacement= 1100cc / 4cylinders = 275 cc per cylinder

Could I use the carburetors from a xs1100 on a xs850 because the cylinders are the same size? Does that mean the carb jets are about the same?

If I am right would all I have to do is increase the idle speed because there are less carbs on the Yamaha triple? 
 
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