P11 Cylinder barrells

Anonymous

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Hi,
Can anyone tell me if the P11 Barrells are the same as the 750 commando barrells?
With Thanks
Reg Ellis
 

ILLF8ED

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P11 cylinders

The P11 cylinders are the same as Atlas 750 (p/n 25323). There are some minor differences from Commando cylinders (p/n 060396). I believe the 750 Commando cylinder will fit to the Atlas crankcase.
 

Anonymous

Guest
P11/Atlas cylinders have 5/16 cylinder head bolt holes where Commando cylinders have 3/8. It's a simple matter to drill and tap (3/8-26) a P11/Atlas cylinder for a Commando head or drill the P11/Atlas head for the 3/8 bolts for the Commando cylinder.

The crankcases are the same, so either cylinder readily bolts to either crankcase.

Ron
 
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