On Jan 24, 12:48*pm, " wrote:
On Jan 23, 9:29*am, "

1. *I'm building an aircraft engine, not a dragster.

The "vair has a similar tube port. Some even FLY behind them :-)

2. *I don't know how to weld cast aluminum to mild steel.


Neither do I know how to weld aluminum to steel, but I have used a
steel or copper plate to flow melted aluminum from a MIG onto as sort
of a "cast as you go" way of building up aluminum for further
welding. It might work with a TIG as well?

As for the weakness, with a constitution such as yours I'm sure it
will return ............... or you will find an ingenious away around
the problem.
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Leon McAtee