Manifold mounting washers for 1936 special

[Guest Jeff_Miller]

I seem to be the victim of hardware stores that carry bolts in plastic, large box stores that only carry 2x4s and auto parts stores that only sell fuzzy dice

I want to replace the washers that go on the stud from the engine and mount between the manifolds and the nut. These washers are almost 1" in diameter but have a width of .17". I can't find any local hardware that looks like them and the "experts" at the above mentioned stores have no clue what to call it other than a washer.

I believe there is a reason the washer is shaped like it is so I don't want to replace it with a modern stamped washer or group of washers. I did find some brass bushings that approximate the shape but I suspect the brass will be too soft for the intended purpose.

Does anybody out there know what this bit of hardware might be called so that I can try to locate a replacement on the internet? Perhaps you might even know a place to get them?

Thanks,

Jeff

[Mark Shaw]

They are called "belleville spring washers". By stacking these washers you can build a spring loaded assembly.

We use them on packing gland followers for valve applications where temperature varies enough to cause leaks.

You can find them here under "steel belleville spring washers":

http://www.mcmaster.com/ Catalog page 1195.

[Fred Rawling]

I have some manifold clamp washers that measure about 1 inch in diameter and are aproximately 3/16 thick at the edge.

The manifold clamp washers are concave to allow the manifold to move as it expands and contracts from the engine heat. If this is what you need, send me an e-mail at fred.rawling@live.com and I will send you some pictures.

Fred

[Guest Jeff_Miller]

Thanks for the link. I didn't see any washers that were as thick as the ones currently on the car. Part number 9712K423 is pretty close in the other dimensions but it is about 1/2 the thickness so I would need to stack them. However, now that I know what to call them at least I can continue to look.

I see McMaster Carr referenced a lot on this board and I suspect it is probably time to see what they can do for me.

Thanks again for the pointer.

Jeff

[Guest Jeff_Miller]

Hi Fred,

Thanks for the response and the offer to send pictures. I already have a few of the washers so I know what they look like; I just can’t seem to find replacements. Do you have new ones to sell or a reference other than McMaster-Carr? The ones you referenced seem to be the correct thickness without having to stack them and I would prefer to not stack.

Jeff