[SEL] Babbitt pouring question for an Alamo engine.

[Jim and Diane]

Hi Curt,

Take a look at http://www.oldengine.org/members/billd/bearing.htm

Fake Shims: Temporary shims made of hardwood were used as all two piece 
bearings were poured as a unit. The hardwood shim was .125 in thickness and 
had four grooves cut on the surface that set against the crankshaft surface. 
These grooves allowed the molten metal to flow into the lower bearing space. 
The temporary wooden shims would be later replaced with metal shims when the 
engine was reassembled.

It sounds like the babbitt was poured through the hole for the grease cup 
and allowed to run through cut outs in the wood shims.  This would do top 
and bottom in the same shot.  The wood shims are removed and the babbitt 
connecting the two bearing halves is cut away so the upper bearing can be 
removed.  This is my take on it, maybe some others can read it and see what 
they think.  To bad there are not any pictures.

Jim

Jim and Diane Kirkes
Hemet, CA , U.S.A.
jd.kirkes at verizon.net
----- Original Message ----- 
From: "Curt" <curt at imc-group.com>
To: "SEL" <sel at lists.stationary-engine.com>; "SEL (Oldengine.org)" 
<stationary-engine at oldengine.org>
Sent: Monday, April 17, 2006 7:07 AM
Subject: [SEL] Babbitt pouring question for an Alamo engine.


Guys,
So far all the babbitt I have poured is lowers. The Alamo I am working
on will need the lowers poured and have melted them out. Looking at the
uppers leads me to think they should be redone as well. I haven't melted
them out yet.
Have mostly completed the fixture to pour the lowers, but I have a
question for you experts on how to do the uppers. I am planning on
pouring the lowers around a dummy piece of 2" TG&P. Preheating the dummy
shaft and the engine base/bosses is fairly easy when doing just lowers.
But how does one heat the dummy shaft if doing the upper at the same
time? I see how the upper could be poured thru the greaser hole. How
will the lower cavity be poured at the same time when metal tight
dams/shims are in place between the uppers and lowers? I thinking both
would be poured at the same time??? Or are the uppers poured first, then
the caps removed and the lowers poured later???
I really need some good advice here!
Curt Holland
Gastonia, NC


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