Wittek clamps
 

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.

Re: Wittek clamps
 

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.

Re: Wittek clamps
 

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 ?

Re: Wittek clamps
 

I'll check tomorrow for you.

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Nystrom repros? Any link?

Re: Wittek clamps
 

Here ya go:

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

Re: Wittek clamps
 

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.

Re: Wittek clamps
 

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

Re: Wittek clamps
 

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

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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.

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

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The thumbscrews are the easy part.

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

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

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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.

Re: Wittek clamps
 

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.

Re: Wittek clamps
 

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

Re: Wittek clamps
 

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.

Re: Wittek clamps
 

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.

Re: Wittek clamps
 

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 ?

Re: Wittek clamps
 

Hank,

If you've found a honey hole for #2's and would like to sell a few, please let me know. They are getting very tough to source in the US.

I'll post a picture of some adjustable hose clamps for the coolant hoses I have that are '40's vintage. Maybe we can work out a trade.

I was fortunate to find four Wittek's for my upper hoses.

Tim

Re: Wittek clamps
 

I'll just got 1 box out of 3 I order.

I has 7 of the number 22.
I has 3 extra but tumb screw is not the same as the other 7 ( all polished )
Se picture.
This Nr 22 don't fit a 5/16 hose good, se picture.
I has one Nr 2 and one Nr 24 and two Nr 26.

The 15 of Nr 2 I has not yet got ( no hole and steel not cad)
The 8 of Nr 2 ( cad ) NOS but erroded has hole.

Re: Wittek clamps
 

Yes, you need #2's. Any other size is too large for 5/8" hose. Guys often assume that the 22's are just double stamped #2's, but they are not and a different size.

Re: Wittek clamps
 

https://www.fordbarn.com/forum/attac...9&d=1771345937

https://www.fordbarn.com/forum/attac...0&d=1771346074

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Nr 22 seems Ok for 3/8 hose.

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Re: Wittek clamps
 

I'll just noted the dated as I thought was Nr 2 is actually Nr 24 !
I has not got that clamps yet. Seller said it was 3/8 but I saw the number 2 and thought all Ok, and I was hot on them as dated 4/48 and very nice set ( 15 of them )
Even the ones I bought from LA ( has not got them yet ) seems to be 5/8, so this is also Nr 22, Huu ! ;- ))
Now I has got plenty of them....
What I need was 8 to fit 5/16 hose.
Well, what does this call , learning lession.

LA, cad ruff se picture ( 5/8 )
Dated 4/48 is Nr 24...
I has a Nr 24 and its to wide for a 3/8 hose.
Now I has 15 of them, Ha.
Someone need ?

Re: Wittek clamps
 

I got my second order today and it was the Nr 2 ( correct )
No date and cad.
Guess older.
They look kind of better live than on photo, but new NOS but little erroed.
I might not really like the cad look. But they are Nr 2's !

-I like the other polished better, as my Nr 22 and the the Nr 24 is dated 4/48 but stainless.
The ones I still has not get look non polished stainless but if they are Nr 2 or Nr 24 I will soon know.

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Re: Wittek clamps
 

Last order came as I thought was Nr 2 but they was Nr 24, it might fit a 3/8 hose but don’t know. To bad as new and dated 4/48.

Can one use 3/8 bigger hose OD to carbs.
I do has stanless Nr 22 to fit this 3/8 hose.

I did not like the NIS Nr 2 cadmided.

Re: Wittek clamps
 

Here is pictures with Nr 24 and Nr 22 ( only 3/8 hose ) and Nr 2 ( 5/16 hose )
The Nr 24 was told be Nr 2 and but fit 3/8.. but it don't fit a 3/8 hose.
I lathed a test at diameter over 3/8" in diameter and then the Nr 24 might work to clamp the 3/8 hose, but it opens up the shell, se picture.
But the cool think it really fit my time line as dated 4/48 ( stainless )
The Nr 22 has no date and stainless.

The Nr 2 is steel/cadmium and that fit really nice the 5/16 hose, but then erroed cadium ( but NOS ) But stainless is nice.

Your ideas ?

Re: Wittek clamps
 

Are there any 'charts' on where the clamps fit the OD range ?
That would help guys new in find them !