Wittek clamps

[3W Hank]

Questions on Wittek clamps.
First. Are they numbered in sizes ?
For example I has 5/16” rubber in US made fuel lines betwwen the LZ carbs but plan to has 3/8” from tank under car to firewall.
I also has water tubes ( FH ) and I think OD on rubber might be round 2.3”.
Any suggested sizes ?

Then, how are the periods, can one see dates, if had the older holes or cadmid surface or steel.

I has bought some from 2 ( 3 ) places but will get them soon but now I bought 3/8” as he said work fine and dated 4/48. No holes but look like a steel shell.
Others I bought, seen pictures is cadmid surface some with holes, some not.
No detail on numbers ( size ) or date.
Will soon know.

I has only 2 of the larger ones ( 60 mm )
But I need 10 more.
Its not that easy try figure all this out and find the parts.
Some of my buddys say I’m a nut.
Shore, I can go to Walmart, but its not that fun.

[Tim Ayers]

For fuel line, you need Wittek's #2. They are getting VERY hard to find. Nystrom is making new ones if you can't find old ones.

The ones I have seem to all be stainless steel, but with different coatings depending on when they were made.

I am a stickler for details and hose clamps are one of those things where I have no issue paying up to ensure they fit the era of my car.

I've buy #2's whenever I can find them.

[3W Hank]

The ones I bought was just told be either fit 5/16 or 3/8, but if you say Nr 2 how wide is thoose in diameter ( lose ) ?
Do you has 5/16” rubber fuel lines to carbs ?

[Tim Ayers]

Originally Posted by 3W Hank

The ones I bought was just told be either fit 5/16 or 3/8, but if you say Nr 2 how wide is thoose in diameter ( lose ) ?
Do you has 5/16” rubber fuel lines to carbs ?

I'll check tomorrow for you.

[alchemy]

Nystrom repros? Any link?

[Tim Ayers]

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Originally Posted by alchemy

Nystrom repros? Any link?

Here ya go:

https://nystromperformance.com/produ...uel-hose-clamp

[Tim Ayers]

Originally Posted by 3W Hank

The ones I bought was just told be either fit 5/16 or 3/8, but if you say Nr 2 how wide is thoose in diameter ( lose ) ?
Do you has 5/16” rubber fuel lines to carbs ?

As mentioned, Wittek #2's the correct size for 5/16" fuel line. Any larger, they don't clamp the hose on the nipple correctly.

Here is the hose I've used.

[3W Hank]

I has around 30 of the now and this was I bought today dated 4/48, just as I like ! ( Nr 2 )
Super happy.

[leon bee]

^^^ Fuel hose from Turkey. I've only just started noticing Turkey in some parts here and there.

[tubman]

Wittek clamps are used a lot in early Corvettes. They have been re-popping them for at least 40 years. Any dates during that period are readily available. I would expect that's not an unusual case.

[itslow]

Corvettes don't use the thumb screw style clamps that the hot rodders want.

[tubman]

The thumbscrews are the easy part.

[Tim Ayers]

Originally Posted by tubman

Wittek clamps are used a lot in early Corvettes. They have been re-popping them for at least 40 years. Any dates during that period are readily available. I would expect that's not an unusual case.

Not sure on which size clamps are used on Vettes, but #2's are very hard to find.

[Tim Ayers]

Originally Posted by leon bee

^^^ Fuel hose from Turkey. I've only just started noticing Turkey in some parts here and there.

Right? Crazy. I recently installed some lower control arms for a Mazda that were made in Turkey.

[3W Hank]

Here is my 3 orders, hard to think this is repro and I guess it’s 40’ most of them.
Some told me early ( 40’s ) is cadmidded but 50’s has steel band but the ones dated 4/48 has steel bands.

[Tim Ayers]

Originally Posted by 3W Hank

Here is my 3 orders, hard to think this is repro and I guess it’s 40’ most of them.
Some told me early ( 40’s ) is cadmidded but 50’s has steel band but the ones dated 4/48 has steel bands.

That is a good haul, Hank. Like I said, #2's are getting very difficult to source. I'm curious about Nystrom's clamps.


Mine are mix of stainless and cad plated. Could be for different applications. I'd assume stainless was aviation, but I have no way to verify.

[3W Hank]

Tim, when I has all of them here I will show all details of them.
This is fun.

[busmania]

I bought some of the nystrom clamps when they first came out (just a few months ago if I recall correctly). I haven’t installed them yet. Let me know if anyone wants detailed pictures of them. They are not installed yet as my car is at the interior shop.

[3W Hank]

It always good when good repros comes out, please show them.
I think the old Nr 2 is not that hard to find, but the bigger ones to water tubes is really hard. I has only 2 of them, but I has 12 NOS std Ford.

[3W Hank]

On Wittek clamps to FH water tubes, I has the std Ford clamps and they are
marked A - 2.1/8 ( 2.125" )
Open ( end of screw ) they are around 2.20".

One friend showed me his Wittek clamps, marked #36 and showed the rubber
hose is 54 mm or as the std Ford 2.1/8".

The ones I bought, I has not them here yet is 60 mm or 2.36".
-But seller told me that is what he used.

The bigger ones is hard to get, so now I has just 2 of them.

Ideas of this ?