piston ring gap

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gmlaverda
Posts: 32
Joined: Sat Oct 26, 2013 9:32 pm

piston ring gap

Postby gmlaverda » Mon Dec 08, 2014 2:32 am

I am planning the reassembly of my '69 350 engine. I would like to know the preferred piston ring gap as well as the preferred method of filing the rings.
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DucRedux
Posts: 49
Joined: Wed May 15, 2013 7:57 pm
Location: Delaware County, NY and NC

Re: piston ring gap

Postby DucRedux » Tue Dec 23, 2014 6:48 pm

From the Ducati Singles Manual, which is available online through a quick search, the stated (standard) in-position ring size for a 350 engine is a 76 mm diameter with a gap of 0.30-0.45 mm for the compression rings and a gap of 0.25-0.40 mm for the oil ring.
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