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Aside from the electrolosis problems, the ground straps (usually woven metal) are required for proper accesories ground. Stuff like the gauge senders, alternator, starter, etc. If the ground is missing, accessories will try to ground through any other available wiring, and/or not work right. Many starters, that exibit slow cranking when hot, have been repaired by re-attaching or installing missing staps! The straps usually have a "star" washer to promote good contact between the strap, block or frame.
This exact topic appeared in forum about 1year ago. I have a brand new, never installed Mr. Gasket Chrome thermostat housing in my parts box as a result. I just removed my OEM aluminum gooseneck, and took it to the buffing wheel, and with some compound and elbow grease, got it to look pretty good, but not as good as the chrome one.
I was wondering if anyone ever thought about 'buffing' the inside of the Mr. Gasket housing with very fine emery cloth, and then attempting to coat the inside area of the housing with some sort of protective coating, like POR-15, or whatever. Does anyone out there know if something like this would have a snowball's chance in ____ in working?
Maybe the gooseneck is white metal (zinc). They use zinc anodes on boats as a 'sacrificial' part- the galvanic current eats them first, before the hull fasteners or the propeller and shaft.
:chevy
The chrome thermostat housing in this picture has been in use for 10 years and still looks new inside and out, still has the original o-ring...and if I remember right, it was a $10.00 Mr. Gasket piece.
FWIW, I have always used disstilled water + coolant + Red LIne water wetter.