Good point years ago when I was involved with welding motorcycle heads and such
we put them in an oven and pre heated to 350.. As far as the welding goes now I
am not generally there for that I hire it out they call when done. I supply
prints jigs and fixtures to assemble. They generally get it right.
Dave
LGMCAFEE@aol.com wrote:
>
> In a message dated 1/4/03 5:38:56 AM Central Standard Time,
> ddahlgren@snet.net writes:
>
> <<
> If the manifold is used it is almost impossible to weld at times. The oil is
> way
> too deep into the pores..
>
> Like Dave says the metal needs to be clean, I never have had much luck
> cleaning aluminum with cleaners. I use a torch and that will bring the oil to
> the surface and burn it off also this will preheat the part which will help
> in welding if the part is a thick piece. Larry Mac
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