EEVEE

Is that copper spray a gasket stuff really that good? Im planning on redoing my exhaust and intake manifold gaskets and am gonna use it to see what happens.

BlueRidgeMark

It's well proven. Been around longer than most of the members here.

DustyWagoneer

We never do head gaskets without it.
Or intake exhaust sometimes too.

5-Speed

I only use that stuff on solid copper head gaskets. Not saying there is anything wrong with using it but I dont see it being "needed" with a stock style gasket, paper or MLS.

outersketcher

On what kinda gaskets does one typically use that spray? Is it intended for Intake/Exhaust manifolds only? or are there other applications to which it can be useful?

BlueRidgeMark

Intake/exhaust, in my experience.

Bugout4x4

Yep... Even heat transfer and dispersal. This is more important than most would ever figure. In fact, every new engine is designed with heat distribution as a prerequisite.

Take the old Jimmy Detroits as an example... If heat is not even, the metal to metal tolerances of each fuel injector can change and mess things up for timing cold compared to timing hot. Even the temp of the timing pins themselves can change how accurate it is timed.

So yes to the heat transfer capabilities of copper along the surface of metal parts.

Big David

I've used it twice for intake/exhaust with great results.

s346k

i sprayed a whole bunch of it on an old valve cover that was laying around, just to see what it would do. i only succeeded in making a mess.

i’m with 5 speed. unless the gasket in question is copper, i don’t see the need. if it’s being relied on to stop a leak, there is a problem elsewhere. m