
10-12-2012, 11:15 AM
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CC Member
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Join Date: Apr 2009
Location: Little Rock area,
AR
Cobra Make, Engine: ERA Street Roadster #782 with 459 cu in FE KC engine, toploader, 3.31
Posts: 4,533
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I have a standard water hose nipple that has a nominal diameter of 5/8 inch on the exterior of the threads - but it might actually be sized as something else - I'm not sure. I'm going to take the nipple down to Sears this afternoon and try to match it up against a tap - see if I have any luck. And then if I can match it up I hope the tap notes the size of drill bit I will need.
UNF threads - huh? Well, I guess they generally have screwed into the standard NPT hose nipple manifold opening or there would be a whole cottage industry built up around re-tapping out Ford intake manifolds. I will visually compare the nipple to the sending unit threads and see how they match up. But yes, they are Smith gages.
Thanks
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