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Found a interesting picture of how well a SR20 stock head gasket seals compared to a Cosworth head gasket....or lets say any other high end head gasket.
![](http://jdm-insider.com/Blogs/Eric/wp-content/uploads/2008/02/fujisr201.jpg)
the intensity of the red coloring directly represents the sealing quality of the two head gaskets. I believe they are torqued to provide the proper sealing pressure.
i always swore by stock head gaskets. but i am starting to think diferently.
![](http://jdm-insider.com/Blogs/Eric/wp-content/uploads/2008/02/fujisr201.jpg)
the intensity of the red coloring directly represents the sealing quality of the two head gaskets. I believe they are torqued to provide the proper sealing pressure.
i always swore by stock head gaskets. but i am starting to think diferently.