copper headgaskets, sealer?
 

What is your favorite sealer for the water passages when using copper head gaskets?

Some copper gaskets already have a sealer on them, But for the ones that do not, I use Coppercoat from Permatex.

TS1955

I used to use GM sealing compound with very good success I don't know if it still is available though

Gasket sealer
 

I've had good luck with Hylomar gasket sealer. It was recommended by an area performance engine builder. There are plenty out there. I would use coppercoat if I couldn't find Hylomar.

Permatex black silicon

X2

thanks guys, I have used all the above with varied sucess except Hylomar ....I remember seeing an add somewhere for a sealer expressly for this but cant remember what or where.....getting old i guess.....
please keep the recomendations comming....maybe seeing the name will jog my memory

Thank you
Robert A.

Sealant
 

Here is a website wth some info on Hylomar:
http://www.hylomar-usa.com/?kc=6NbrC...FVCF7Qod5SkOFQ

Copper coat, spray on.

Zip.