BritishV8 Forum

My air cleaner lid has a fixed stud that threads into the carb.  Not sure if I'm not getting it tight enough since it rubs on the air cleaner as I spin it on but every time I pop the hood it's loosened up a bit and the ribs on top are at an angle instead of straight.  Any ideas on what I can do to lock it in place?

Is it the top plate or the bottom that is turning? My gfuess is the whole assembly is rotating since the rubber of the filter would tend to keep the plates from rotating in relation to each other. If that is the case, you could key the bottom plate to the carb with a pin in the carb flange and a notch in the plate. Some of the old factory air cleaners had locators in them.

Which direction are the ribs turned,(clue). Stud is locked-down with a jam nut ? You might consider(2) jam nuts under the lid, which allow just enough element preload.  Cheers, roverman.

As Jim said, keying it is pretty simple. I drilled a small hole in the edge of the carb that the cleaner sits on then inserted an 1/8" x 1/4' steel pin (just a firm hand, press fit) and drilled a corresponding hole in the bottom pan of my air cleaner. The top doesn't move because the friction of the rubber on the element keeps it in place. Works like a charm and is easy to do.

Air cleaner base has a gasket under it ? Another good idea.  roverman.

Sounds like pinning is the answer - although I think I'll use some permanent locktite to hold the pin in.  While it's small, I still don't like the thought of the pin vibrating out & getting sucked in.

Art, yes, there's a gasket between the carb & air cleaner base.

Re: Loctite. I used a drop of red when I pressed the pin in.

Roll pins are good , for staying tight. More compliant with hole size variation.  roverman.