On Sun, 15 Sep 2013 07:28:16 -0500, "Snag" wrote:


"Erik" wrote in message
...
In article ,
"Snag's Shop" wrote:

Some time ago I managed to tip my compressor over , landed on the
pulley .
The pulley survived , but the connecting rods didn't . Snapped 'em both
off
just above the big end . Fast forward to now , and the replacement pump I
bought is blowing oil ... from excessive blowby . I haven't pulled it
down
yet , but the rings have gotta be shot or broken of just plain crap to
begin
with cheap pump ... .
And this is where the wild idea comes in . The rods in the cheap pump
might fit , or they might not ... and if they don't I'm thinking about
TIG
welding the broken ones back together . I can build a fixture to hold the
two bearings in alignment . I'd be most worried about the temper of the
repaired area , but a quick chill and a few days aging might get it back
enough .
Is this a waste of time , or do I stand a decent chance of having this
work ?

Don't know about the rods... there's probably a lot of variables...

However, before going to all the trouble, are you sure the crankshaft is
still straight? How about the crankcase and 'main' bearing's?

Erik

When it landed it pushed the crank bearings out the other side . Crank
still spins easily , and it looks like the bearings just need to be pushed
the rest of the way back in place . There is no or very little axial load ,
just the radial loads .
--
Snag
and it is/was a
good I-R pump

If it is an IR you should be able to buy rods. They are aluminum or
sintered iron???. If Iron I'd be awfull tempted to braze them. If
aluminum, tig them. Weigh them first on an accurate scale and grind to
match after welding/brazing. It's worth a try. They are not under nEAR
the load they would be on an engine.

Or see if any Brigs and Stratton or Tecumseh or whatever rod can be
modified to fit.