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660 cylinder gasket

Gary Courtney

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I am putting an 0.5 mm gasket on cylinder base and noticed oem is not flat it is raised around opening and was wondering according to ipl shows drop down in gasket on top next to cylinder. thoughts?
 

Funky sawman

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Oem had two thickness of gaskets, the thicker one is a cardboard paper gasket
 

Gary Courtney

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Oem had two thickness of gaskets, the thicker one is a cardboard paper gasket
the 0.5 is what I have. it is raised around hole . does it go toward cylinder or base? or does it matter, ipl shows indention up towards cylinderWIN_20190118_21_05_00_Pro.jpg
 

huskihl

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Just a heads up Gary, when I was working an 066 for @I saw a lot, the metal gasket would not seal to the base, creating a slight vacuum leak, even though I had machined the base perfectly to the bore. I ended up smearing Moto seal on both sides of the gasket and stuck it back together to prevent it from leaking. I know it's a popular gasket, just throwing it out there so people know
 

Gary Courtney

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Just a heads up Gary, when I was working an 066 for @I saw a lot, the metal gasket would not seal to the base, creating a slight vacuum leak, even though I had machined the base perfectly to the bore. I ended up smearing Moto seal on both sides of the gasket and stuck it back together to prevent it from leaking. I know it's a popular gasket, just throwing it out there so people know
Thanks for the heads up!
 
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