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Old 12-03-2011, 17:39   #1
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Rebuild Specs / Info for Westerbeke 20B Two ?

I am buying a Catalac 9m which has a 20B Two in need of a rebuild. I plan on doing some his myself two save some money. I have been a auto technician and worked for myself or the past few years building drag cars etc, so it should be in my realm of expertise. However I know nothing about these engines. Looks like it could be expensive to have someone else build it.

I have had little luck finding technical info IE. clearances and specifications. Also, where is the best place to source parts? Also, it looks like the only oversize pistons are .025 over. The engine has been built before, so if it was bored over already it looks like I'd have to sleeve it. Hand honing never really seems to give a good ring seal, so it looks like that would be my only option.

Any and all help would be very appreciated.
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Old 12-03-2011, 18:14   #2
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Re: Rebuild Specs / Info for Westerbeke 20B Two ?

OK, found the technical manual, that is a relief. Looks like there are .010, .020, and .030 pistons, so I should be OK there.

Any input is still welcome on parts sources. Even better if in the Houston area.


Sorry for the "new jack" questions. I am new to all that is sailing.
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Old 12-03-2011, 18:25   #3
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Re: Rebuild Specs / Info for Westerbeke 20B Two ?

Westerbeke has a dealer / distributor locater on their site
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Old 14-03-2011, 10:24   #4
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Re: Rebuild Specs / Info for Westerbeke 20B Two ?

Thank you never monday.

Does anybody have recommendations for a machine shop in Houston? The one I deal with not a player on this one.
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