A&B Epoxy putty

Hi Everyone.
How well does the Epoxy withstand exhaust gas temp?
Thanks.
Al

not at all


Randy

Works great in intake runners.Did a real nice 3x2 set up on an FE motor.

Thanks again for the replies gentlemen. Looks like time for the braze.
I did some searching earlier. One porter even tried MORTITION EPOXY!!

She didnt even want to think what its intended purpose was....
Al

Mondello supposedly has some epoxy that'll work in an exhaust port. BUT, I just went to his website and once I got past all the "mondello, the god of porting", ahem, stuff, I still couldn't find the epoxy. Maybe it didn't work as well as they thought? Or maybe my mind started shutting down once I read that you could pay 3000 dollars and become an expert head porter in 5 days if you attend one of his schools... Or maybe I'm just a slow learner...

Try PC-7

once u get in put a little oil on your finger and u can from it and smooth it like glass

Ive used PC-7 in wood aplications. Strong stuff. Never thought about on heads though.
Regards.
Al

Found this with a search,

Application

Apply PC-7 in any thickness to both sides of surface and bring together firmly. Be careful to insure that ample PC-7 epoxy paste remains between the contact surfaces. To bridge or reinforce larger holes, screen wire or glass cloth is excellent. To smooth out work, dip tool in lacquer thinner or denatured alcohol. After cure, paint, drill, machine, sand, file, or saw PC-7 . ADVISE – Do not subject to sustained heat in excess of 200° (93°C). PC-7 has strength far exceeding most materials on which used. Speed cure with artificial heat.

AFAIK there are no fillers that will work and stay in the exhaust, I've looked and tried some, AB will work half decent in intake ports, but will crack over time.

Bret

How about a ceramic product? Some of this stuff might be worth investigating. http://www.cotronics.com/vo/cotr/index.htm

Thanks for the link Doug. I just ordered their catalog.Pretty neat stuff. Thanks.
Al

You're welcome. I ordered one too. It sounds like some interesting stuff, high temperature and machinable.

Been there done that! Good Luck, I might still have some if you are interested.

Bret