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westbend 820 outside diameter

Posted: Fri Oct 05, 2012 9:47 am
by travis stevens
does anyone know the outside diameter of a westbend 820 piston?

Re: westbend 820 outside diameter

Posted: Fri Oct 05, 2012 11:25 am
by ted johnson
Travis, the bore is 2.531, so figure about .005 clearance. TJ

Re: westbend 820 outside diameter

Posted: Fri Oct 05, 2012 2:30 pm
by travis stevens
thanks ted. now i have another question.do you know the outside diameter of a westbend 610?

Re: westbend 820 outside diameter

Posted: Fri Oct 05, 2012 4:04 pm
by ted johnson
The bore on the 610 is 2.187. Allow .0050/.0055 clearance. The 820 cylinder, having the chrome bore, expands at very nearly the same rate as the piston does, and the clearance can be a bit less. On the 610, as it has the iron liner, there should be a tiny bit extra piston/wall clearance. Ted

Re: westbend 820 outside diameter

Posted: Fri Oct 05, 2012 11:55 pm
by travis stevens
thank you ted for the info. very helpful.... 8-)