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Cometic head gasket,86mm or 87mm bore

Started by natracing · 30 July 2012 · 8 replies

Preserved from CalaisTurbo. Original authors and dates are shown; archived members are not current Holdcom accounts. View original archive ↗

natracingArchived member

30-07-12, 09:21 GMT+10#1

Hi guys,which one do i buy.The 86mm or 87mm bore size cometic gasket.My block has 20 thou oversized pistons.Any expert advice,thanks

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vlturboboArchived member

11-09-12, 01:33 GMT+10#2

did u end up finding out cos im in the same boat. 20thou over cp pistons and not sure what to do.

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pro747Archived member

11-09-12, 08:31 GMT+10#3

87mm bore.. 20thou = 86.5mm bore so an 86 won't fit

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vlturboboArchived member

11-09-12, 11:37 GMT+10#4

thanks for that pro747

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PROMASTERArchived member

28-09-12, 05:30 GMT+10#5

Ive used cometic gaskets on a number of engines, and have to say have had some unhappy results. So far the MLC's gasket to me have been faultless. Just a thought.

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SHERIFArchived member

28-09-12, 08:17 GMT+10#6

Quote: Originally Posted by PROMASTER [View Post] Ive used cometic gaskets on a number of engines, and have to say have had some unhappy results. So far the MLC's gasket to me have been faultless. Just a thought. must be doing something wrong because I have only ever used cometic and never had a problem.....

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PROMASTERArchived member

03-10-12, 04:38 GMT+10#7

Quote: Originally Posted by SHERIF [View Post] must be doing something wrong because I have only ever used cometic and never had a problem..... A few of the big boys e.g.; Kanaris has also stated to me that he's even had a few issues with them, intact he's the one that suggested i try the mls. So far so good bit I'm yet to turn up the boost.

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PROMASTERArchived member

17-10-12, 03:16 GMT+10#8

Quote: Originally Posted by SHERIF [View Post] must be doing something wrong because I have only ever used cometic and never had a problem..... Buy the way Sherif i must admit I'm very impressed with your car lol. well done.

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xAsh-Archived member

17-10-12, 17:15 GMT+10#9

What exactly was the "problem" they had with them?

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Cometic head gasket,86mm or 87mm bore

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