
08-10-2015, 05:03 AM
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CC Member
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Join Date: Aug 2009
Location: Adelaide,
SA
Cobra Make, Engine: AP 289FIA 'English' spec.
Posts: 13,152
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Not Ranked
Quote:
Originally Posted by mdross1
Sure do see the 427 Cobra cues in this car. Back in the day also considered doing a V8 swap into an MG till I discovered the fiberglass replica kits. Also back then looked at a small block Cobra that had been driven year round up here in the Northeast. Seeing the aluminum to frame interface severe corrosion along the frame rails sure was a wakeup call. It was then that I learned how bad is was to have aluminum and steel together.
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It's surprising how many people still think "aluminium....it doesn't rust"  Well no, it doesn't, but it sure does corrode!
If you have a small amount of steel in contact with a large mass of aluminium...all is probably OK, but reverse that, and your small amount of aluminium is a fast corroding sacrificial anode! The difference in their potential difference is quite large. Make that magnesium and steel, and stand back and watch the Mg disappear!
Cheers,
Glen
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