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Exhaust Manifolds do not use gaskets because gaskets cause warping, cracks, leaks, & rust. Ford originally used chassis grease (which carmelized like cast-Iron cookware into a non-stick surface), but modern high-temperature silicone is at least as good. The manifolds should be planed first, though. These were sandblasted, painted inside & out with ultra-high-temp paint, and then planed. IF THE IMAGE IS TOO SMALL, click it. This shows re-used aftermarket manifolds:  These show the bolts, studs, & nuts:  .  For the whole process:  |
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![exmangasket.jpg Exhaust Manifolds do not use gaskets because gaskets cause warping, cracks, leaks, & rust. Ford originally used chassis grease (which carmelized like cast-Iron cookware into a non-stick surface), but modern high-temperature silicone is at least as good. The manifolds should be planed first, though. These were sandblasted, painted inside & out with ultra-high-temp paint, and then planed.
IF THE IMAGE IS TOO SMALL, click it.
This shows re-used aftermarket manifolds:
[url=https://www.supermotors.net/registry/media/1170781][img]https://www.supermotors.net/getfile/1170781/thumbnail/exhmangask.jpg[/img][/url]
These show the bolts, studs, & nuts:
[url=https://www.supermotors.net/registry/media/1055473][img]https://www.supermotors.net/getfile/1055473/thumbnail/exhmanbolt.jpg[/img][/url] . [url=https://www.supermotors.net/registry/media/1168560][img]https://www.supermotors.net/getfile/1168560/thumbnail/exmanflghdwr.jpg[/img][/url]
For the whole process:
[url=https://www.supermotors.net/registry/21191/71870-2][img]https://www.supermotors.net/getfile/770511/thumbnail/12greaseman.jpg[/img][/url]](https://www.supermotors.net/getfile/1165405/fullsize/exmangasket.jpg)