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Anything special, in terms of finish, outer diameter, thickness, etc., for the nuts that hold the tri power holley carburetors to the manifold ? My 400hp car has lock nuts for many of these, which can't be right.
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Re: '68 tri power carburetor hold down nuts
William------
They were standard, zinc plated hex nuts. However, keep in mind that 2 of the fastener positions used bolts, not studs with nuts. These were the left rear positions for the forward and center carbs.In Appreciation of John Hinckley -
Re: '68 tri power carburetor hold down nuts
Joe,
I had noted the two bolts per the AIM drawing. I wonder why two, and not all three, carburetors had a bolt ? And what particular function did the bolts serve that a stud and nut would not ? Does anyone know what the markings on the head of these bolts were, so I can be sure I have correct ones ? Also, was the stud for the air cleaner threaded all the way up, or only at the ends ? I've seen both. Thanks for your comments Joe, and also to any '68 tri power owner who might want to chime in.
BillComment
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Re: '68 tri power carburetor hold down nuts
Bill-----
I don't know why the bolts were used for the two positions described. I suspect it might have been some sort of clearance issue.
Original air cleaner studs were threaded on the ends only. The upper end was threaded for a significant length; the lower end had shorter thread length. These studs were never available in SERVICE.In Appreciation of John HinckleyComment
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Re: '68 tri power carburetor hold down nuts
Bill
Bolts are used on the left rear mounting hole of the first and second carb to avoid interference with the fuel lines that branch off and go to the second and third carbs.
JohnComment
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