[AT] Hole in exhaust manifold....

[Larry D Goss]

LOL!  I suspect there are several of us who have a bundle of those rods 
gathering dust out in the shop.  I know I do.  :-)

Larry

----- Original Message ----- 
From: "charlie hill" <chill8 at suddenlink.net>
To: "Antique tractor email discussion group" <at at lists.antique-tractor.com>
Sent: Tuesday, January 30, 2007 7:14 AM
Subject: Re: [AT] Hole in exhaust manifold....


> Al that's kind of like that guy at the fair or the farm show that "welds" 
> up the bottom of a beer can with his "special" rods.  Ever tried to do it 
> yourself?  I have.  I know it can be done I've seen that guy do it more 
> than once but I can't do it.  I still have some of those rods around here 
> somewhere.  LOL
>
> Charlie
> ----- Original Message ----- 
> From: "Al Jones" <aljones at ncfreedom.net>
> To: "'Antique tractor email discussion group'" 
> <at at lists.antique-tractor.com>
> Sent: Monday, January 29, 2007 9:52 PM
> Subject: RE: [AT] Hole in exhaust manifold....
>
>
>> Thanks, George, It's been a while since I had to remember temp. for
>> brazing, soldering, and so forth.  I've never been too good at
>> brazing--seems like I never got things hot enough to make it flow right.
>> Just need more practice I guess.
>>
>> Al
>>
>> -----Original Message-----
>> From: at-bounces at lists.antique-tractor.com
>> [mailto:at-bounces at lists.antique-tractor.com] On Behalf Of George Willer
>> Sent: Monday, January 29, 2007 7:30 PM
>> To: 'Antique tractor email discussion group'
>> Subject: RE: [AT] Hole in exhaust manifold....
>>
>> Al,
>>
>> Walt should study more before he offers advice, we know he hasn't brazed
>> a
>> manifold.  Visible red shows up just a little over 900 F.  An engine
>> with
>> aluminum pistons would melt down long before the manifold got to 2000
>> even
>> with the cooling effect of the incoming charge.
>>
>> Copper/zinc (brass) melts at different points depending on the alloy.
>> The
>> range is from 1300 F to nearly 2000 F. The cast iron itself would melt
>> at
>> around 2300 F.
>>
>> Brazing manifolds isn't for the faint of heart... differential cooling
>> causes a lot of cracking... It's very difficult to do.  Ask me how I
>> know.
>>
>> George Willer
>>
>>
>>
>>
>> _______________________________________________
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>
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