350 and 441 use the same Intake valve

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Jeff K
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350 and 441 use the same Intake valve

Post by Jeff K »

Interesting, today I am sorting through a pile of NOS Alpha valves and I came across a couple that are identical, except one is stamped V258 and the other is V212. The V212 is a Alpha B40/B44 round head Exhaust valve. The V258 was a mystery. Then I found a couple of V257 "BECK" Valves, these had a old tag with them, "BECK- Valve to suit BSA 440cc Victor 1966 onwards. Made in England". Unless BECK was a different company, I am thinking that these are just Alpha Valves.
So I went back to Alpha's site and they show B40/Early B44and the later B44 use the same valve guides. They show a different numbers for the B40/Early B44 then for the B44 for valves.
Holding the Early B44/B40 Exhaust next to the B44, they are the same valve.
Are the valves in the Round Head B44 the same as the Square head B44 and are they just using different part numbers?
Jeff
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madsundaysurvivor
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Re: 350 and 441 use the same Intake valve

Post by madsundaysurvivor »

I can not be 100% of your question, because I have not seen both valves
But from my work experience in purchasing department, 99% of times the part number is different, the item is different.

Maybe it's just because of the material they are made,you can weigh them to check differences.

Or maybe it's just a slight change in the shape of the head. for this you can put them in a graduated cylinder (enough narrow and long) with water and see the volume variations
Last edited by madsundaysurvivor on Tue May 12, 2020 6:02 pm, edited 1 time in total.
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kommando
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Re: 350 and 441 use the same Intake valve

Post by kommando »

I thought the stem length was longer on the Square barrel, will check in the garage tomorrow, although I was trying to do it today so no promises.
Jeff K
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Re: 350 and 441 use the same Intake valve

Post by Jeff K »

kommando wrote: Tue May 12, 2020 6:01 pm I thought the stem length was longer on the Square barrel, will check in the garage tomorrow, although I was trying to do it today so no promises.
Kommando, you are correct! Feked.com had the specs. Same size and same stem size. But the B44 is a wee bit longer!
B44 = 3 9/16" 3.57" 90.8mm

B40 = 3 15/16" 3.46" 87.9mm

The B44 is 2.9mm longer. This might explain a while back when I was doing a B40 project while I had issues with the rocker arm gap and had to shorten one of the push rods. I think the head had alate B44 Valve in it. So the B40 and the B44 round head are the same intake valve. But the B44 Square head is 2.9mm or 3/32" longer.
Was BECK a separate company or were they just selling Alpha under their label?

Thank you for your help, I will now have to measure these to be sure of what I have.
Jeff
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Re: 350 and 441 use the same Intake valve

Post by Jeff K »

I found this on the Beck/Arnley web site.

"Beck/Arnley was established in 1914 as Beck Distributing Corp. in New York City by Irving Beck. Initially a supplier of motorcycle parts, when World War I broke out, Beck landed a contract to supply the US Army with sidecars made in Australia for dispatch riders who provided communications on the battlefield. After the war ended, Beck began to follow the rapidly growing motorcycle market and provided it with a catalog of repair parts and accessories.

Later, after World War II, the company transitioned into providing parts and accessories for the burgeoning foreign nameplate market. Throughout the years, Beck/Arnley continued to specialize in and understand foreign nameplate replacement parts."
A lot of the valves that I picked up decades ago came from the defunct Milne Bros. Distributing company(motorcycle parts) and the "BECK" valves came from them. I think Milne went under in the late 1960's.
I now think that the "BECK" valves are just rebranded Alpha Valves from back in the day. Many Distributors did this.
Jeff
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