1000 to 1200 cylinder conversion

S

stevepm2011

Hero member
Location
Cologne, Germany
Can anyone out there tell me if it is possible to convert a set of 1000 barrels to 1200 spec simply by pressing new 1200 liners in?
Or does the casting have to be machined out to accept a larger OD 1200 liner?

Steve
 
1000 liners are ~82.0mm OD
1200 liners are ~86.0mm OD
and you need to machine the top of the engine case as well to accept the larger liner

straight forward machining job



 
you could also go with 78mm pistons. that gives you a bit below 1100ccm (1060 or 1070 or so?!?) but saves you a lot of costs... Only the liners have to be machined and honed then.
 
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