[Shop-talk] Adding a tube into aluminum manifold

[Randall]

> Thanks, I do see plenty of examples of steel.  What I didn't 
> know was if cooper would be better or worse.

I don't know; but at least theoretically, copper would be worse.

Aluminum has a galvanic potential of -1.67 (according to
EngineeringToolbox.com), iron (steel) is -0.44 for a net difference of 1.23.

Copper is +0.34, for a net difference of 2.01.

The real world doesn't always follow theory, though, so YMMV.

-- Randall 
56 TR3 TS13571L once and future daily driver
71 Stag LE1473 - awaiting engine rebuild
71-2-3 Stag - awaiting gearbox rebuild