I have dual Weber 44 IDFs running on a 2367 cc type IV. My current setup has dual 7 inch by 3 inch oval air cleaners and no velocity stacks. I have the 2 1/2 inch velocity stacks that came with the carbs. I have recently made an oval aluminum spacer to raise the entire air cleaner about 1 1/4 inches (max due to hood clearance) so I can add the velocity stacks inside the air cleaners. I anticipate a minimum of 1 1/2 inch clearance above the velocity stacks for proper breathing.
My problem is: The four studs that secure the top plate to the carb are too short. They are currently about 1 5/8 long. The top nut (not even a lock not) is flush with the top of the stud. There is no accommodation for even the thin mounting base of the velocity tack.
My question is: Are longer studs available? Something at least 1 7/8 inch?
My Chilton's Weber Manual does not identify them, other than "stud". It would be nice to add a nylon type lock nut, or at least a locking washer. "Redline Weber" says no longer studs are available. Anyone else have a source of parts? Anything wrong with using a straight through bolt? Thank you.
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