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Magnesium water pump..................

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Old May 28, 2011 | 07:12 PM
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Default Magnesium water pump..................

I have an NOS magnesium water pump...................for a big block Chevy. It was manufactured by Horstman (embossed on pump housing), but not dated anywhere. There is no hole on top for a by pass hose like a stock BB pump. Since it's magnesium and since BB Chevys didn't appear until 1965................I'm wondering if this could have been for a race application (Can Am?). Does anyone know anything about Horstman or these mag H2O pumps? And yes, I know mag doesn't like water.
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Old May 28, 2011 | 10:24 PM
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Wow, I just did a google search for magnesium chevy water pump, and it looks like you are going to have to hire a detective or something. This thread came up as the first hit!


Scott
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Old May 29, 2011 | 11:24 AM
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Here is some info I found.


Horstman Manufacturing Co.,Inc.
2510 Pioneer Ave. Vista, CA 92081
760/598-2100 (Office) 760/598-0222(Fax)
www.horstmanclutches.com
info@horstmanclutches.com
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Old May 29, 2011 | 11:50 AM
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How much does it weigh? I'm just curious about the weight difference compared to an aluminum pump, given all the extra effort to cast it for a low volume application.
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Old May 29, 2011 | 02:41 PM
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i've seen their products (Horstman manf.) on Jegs.com before, connecting rods, crank gears etc. racing go-kart stuff.

Last edited by speedreed8; May 29, 2011 at 02:43 PM.
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Old May 29, 2011 | 09:04 PM
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Originally Posted by 69427
How much does it weigh? I'm just curious about the weight difference compared to an aluminum pump, given all the extra effort to cast it for a low volume application.

Checked it on a conventional dial type bathroom scale (probably not real accurate), ..........mag pump weighs 2 lbs vs. 4 lbs for current GM BB alum pump. Not a lot of weight savings. I was just wondering if some of the Can Am teams might have used the mag pumps.
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Old May 30, 2011 | 08:58 AM
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There's a online forum called the H.A.M.B. (Hokey *** Message Board). Sorry I don't have the link, but you should be able to find it with a search.

Don't let the name fool you... Some of the sharpest rodders and racers I've ever run into frequent that board. They've answered some really obscure questions on parts and people for me over the years. I wouldn't be surprised if you were able to answer your questions there too.

Regards,

Stan Falenski
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Old Jun 1, 2011 | 01:59 PM
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I just spoke with Horstman Mfg in California. The gentleman I spoke with was adamant that they manufacture ONLY go kart components, clutches etc................................

Looks like this water pump created itself and was born with the name HORSTMAN "self embossed" on it.........................

Another unsolved mystery.
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Old Jun 1, 2011 | 02:34 PM
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I just left you a message on the NCRS board, might be a good clue.
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Old Jun 1, 2011 | 03:13 PM
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Dang , I can't go there anymore , the suspense will kill me.
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Old Jun 1, 2011 | 03:20 PM
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I found a related widget on eBay made by Horstman, seller says that they were bought pout by Moroso.
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Old Jun 1, 2011 | 06:29 PM
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Hmmmmmmmmmmmmmmmm verrrrrrrrrrrrry interesting.

Thanks Mike.
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Old Jun 2, 2011 | 08:04 PM
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Spoke with Frank, a 25 year employee at Moroso, this afternoon and he says Moroso did not acquire Horstman.....................and he had never heard of a magnesium water pump ...........
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Old Jun 2, 2011 | 08:25 PM
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Hummm, well it was worth a shot.

Here's another clue

http://cgi.ebay.com/ebaymotors/58-59...item53e7af9a55
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Old Jun 2, 2011 | 09:01 PM
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That's a pretty good clue.
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Old Jun 3, 2011 | 12:31 AM
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Turns out that that's the actual pump in question, just mis-identified. Oh well.
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