Too late I know, but you could have asked the supplier if you could look at others in their stock. One of the same construction for another engine that will only fit one way up should tell you.
Head Gasket - Which Way Is Up?
Started by
PaulColeman
, Jan 17 2015 04:07 PM
Best Answer PaulColeman , 19 January 2015 - 10:40 AM
Okay, I rang the manufacturer this morning to get the definitive answer and it is as somebody previously said black composite side up. So I have it the wrong way round - bugger! The reason is that the black side is sticky and the metal side is not. The bores flex due to the compression and heat and the metal side of the gasket against the block allows the bores to move relative to the gasket without damaging it. With it upside down (as I have fitted it) it will fail between the bores where it is weakest. Oh well, you live and learn!!
Hopefully this will help somebody else in the future to not make the same mistake.
I have also suggested to this particular manufacturer that they include something to tell people which side is up.
Paul.
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#17
PaulColeman
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One Carb Or Two?
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Posted 19 January 2015 - 10:40 AM Best Answer
Okay, I rang the manufacturer this morning to get the definitive answer and it is as somebody previously said black composite side up. So I have it the wrong way round - bugger! The reason is that the black side is sticky and the metal side is not. The bores flex due to the compression and heat and the metal side of the gasket against the block allows the bores to move relative to the gasket without damaging it. With it upside down (as I have fitted it) it will fail between the bores where it is weakest. Oh well, you live and learn!!
Hopefully this will help somebody else in the future to not make the same mistake.
I have also suggested to this particular manufacturer that they include something to tell people which side is up.
Paul.
Edited by PaulColeman, 19 January 2015 - 10:41 AM.
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