<VV> Re: Welding aluminum heads

[Garth Stapon]

Chuck:

Although it is true that aluminum can be welded with an oxy fuel torch and
flux, the best welding process selection is Gas Tungsten Arc Welding (Tig)
with silicon enhanced filler metal such as a 4043 or 4047.

Preheat is desirable. (700 degrees F) and the material should be cleaned as
well as possible prior to welding.

Grinding may be required to remove imbedded oil, but two or three passes
(followed by grinding on each pass) will work wonders.

I published a paper (as a co-author) on aluminum welding if you want a copy.

Regards, Garth
----- Original Message -----
From: "BBRT" <chsadek at adelphia.net>
To: "Garth Stapon" <stapon1 at earthlink.net>
Sent: Sunday, April 24, 2005 12:18 PM
Subject: Welding aluminum heads


> Garth,
>
> I appreciate your helping us novice welders in the Corvair world. I heard
> the local head repairer uses a torch to reapir aluminum heads.  He sells
> equipment to repair aluminum and cast iron, has ovens, and teaches and has
> videos of how to do it-makes his living repairing rare blocks an heads,
etc.
> What are your opinions about how to reapir one of our Corvair head
> chambers-both to fix and to add metal?
>
> Thanks,
>
> Chuck Sadek
> YS73
>
>