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 ?
--
Snag
out in
the shop

On 2013-09-15, 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 ?

It is a waste of time, good compressors are not that expensive used.

i

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

"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

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.

On Saturday, September 14, 2013 9:57:02 PM UTC-4, Snag's Shop wrote:


Is this a waste of time , or do I stand a decent chance of having this

work ?

--

Snag

out in

the shop

Probably a wasto of time. Kind of depends on how good the compressor was before the acident. If it is a good compressor then replacement parts are availablo. So you could try the repair and if it does not work , then order replacement parts. But probably makes more sense to look at Craigslist for a new to you compressor.

If the motor and tank are good, you can buy a replacement pump.

Dan

Northern Hydraulic, and Harbor Freight both
have replacement compressor, without having
to buy the motor, tank, etc.

Maybe some oil additive, to reduce blowby?
Don't know if Marvels Mystery Oil would do
any good in a compressor crankcase.

..
Christopher A. Young
Learn about Jesus
www.lds.org
..

On 9/15/2013 7:52 AM, wrote:

But probably makes more sense to look at Craigslist for a new to you compressor.

If the motor and tank are good, you can buy a replacement pump.

Dan

My ignorant guess, is that any repair to a piston
rod is going to fail at the worst possible moment.
Some things just can't be repaired, and get it
right. Suppose you weld, and the weight throws
the balance off, and now you've got a wicked
vibration.

you don't mention if this is belt or direct drive,
and how many amps, HP, and so on. My thought is
to look for a cheap replacement, Ebay or Craigs
list. Or, buy the pump from Northern Tools, or
Harbor Freight.

I like the concept of repairing things, but this
isn't one of those moments.

..
Christopher A. Young
Learn about Jesus
www.lds.org
..

On 9/14/2013 9:57 PM, 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 ?

On Sunday, September 15, 2013 5:26:42 AM UTC-7, Stormin Mormon wrote:
My ignorant guess, is that any repair to a piston

rod is going to fail at the worst possible moment.

Some things just can't be repaired, and get it

right. Suppose you weld, and the weight throws

the balance off, and now you've got a wicked

vibration.



you don't mention if this is belt or direct drive,

and how many amps, HP, and so on. My thought is

to look for a cheap replacement, Ebay or Craigs

list. Or, buy the pump from Northern Tools, or

Harbor Freight.



I like the concept of repairing things, but this

isn't one of those moments.



.

Christopher A. Young

Learn about Jesus

www.lds.org

.



On 9/14/2013 9:57 PM, 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 ?



Neither Garbage Freight or Northern are the best place to buy compressor pumps.

This place is far better:

http://www.eatoncompressor.com/page/page/504413.htm

When you buy IR all you are doing is paying for a name that once meant something. Suggest you and others investigate where the majority of compressor pumps are made. Eaton Compressor will tell you who makes theirs and how long they keep parts for them in stock. Eaton tells me they will only carry compressor pumps that they have dual sources for. Compressor pumps Eaton sold 15 years ago they can still get parts for at reasonable prices.

You're welcome for the education ... now please put me back in your newsgroup kill file. Everyday I'm thankful that idiots like Larry Jackass, Tom Gardner and other lame losers don't read what I post.

On Sunday, September 15, 2013 11:44:19 AM UTC-7, jon_banquer wrote:
On Sunday, September 15, 2013 5:26:42 AM UTC-7, Stormin Mormon wrote:

My ignorant guess, is that any repair to a piston



rod is going to fail at the worst possible moment.



Some things just can't be repaired, and get it



right. Suppose you weld, and the weight throws



the balance off, and now you've got a wicked



vibration.







you don't mention if this is belt or direct drive,



and how many amps, HP, and so on. My thought is



to look for a cheap replacement, Ebay or Craigs



list. Or, buy the pump from Northern Tools, or



Harbor Freight.







I like the concept of repairing things, but this



isn't one of those moments.







.



Christopher A. Young



Learn about Jesus



www.lds.org



.







On 9/14/2013 9:57 PM, 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 ?







Neither Garbage Freight or Northern are the best place to buy compressor pumps.



This place is far better:



http://www.eatoncompressor.com/page/page/504413.htm



When you buy IR all you are doing is paying for a name that once meant something. Suggest you and others investigate where the majority of compressor pumps are made. Eaton Compressor will tell you who makes theirs and how long they keep parts for them in stock. Eaton tells me they will only carry compressor pumps that they have dual sources for. Compressor pumps Eaton sold 15 years ago they can still get parts for at reasonable prices.



You're welcome for the education ... now please put me back in your newsgroup kill file. Everyday I'm thankful that idiots like Larry Jackass, Tom Gardner and other lame losers don't read what I post.

Direct bare pump link for those too lazy to take the time to read Eaton Compressors website:

http://www.eatoncompressor.com/page/page/518643.htm

On 9/14/2013 21:57, 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 ?


MacGuyver dis it with a silver dollar. G


--
Steve Walker
(remove brain when replying)

Didn't he also use jumper cables, and a car
battery that he conveniently found in the
pole barn where he needed to repair the
propeller for the old air plane with the
silver dollar? Then he ground and balanced
the propeller, and flew away from the bad
guys who were shooting at him with automatic
weapons? Was that the Mac episode?

..
Christopher A. Young
Learn about Jesus
www.lds.org
..

On 9/15/2013 10:33 AM, Steve Walker wrote:
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


MacGuyver dis it with a silver dollar. G

On 9/14/2013 9:57 PM, 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 ?



I have a 5hp Kellog American in perfect shape except for a crack in the
tank by one of the legs...CHEAP!

On 9/14/2013 9:57 PM, 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


All this talk of repairing con-rods is silly. Make new ones, if you
must.

BUT! My real question is this: What sort of situation would have
someone tipping over and allowing to fall a compressor WHILE IT WAS
FRIGGIN' RUNNING?

There is no way that could have damaged the con-rods if it were off.
So...
What the HELL did you do? (And maybe WHY would be a good one, too.)

LLoyd

Lloyd E. Sponenburgh wrote:
On 9/14/2013 9:57 PM, 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


All this talk of repairing con-rods is silly. Make new ones, if you
must.

BUT! My real question is this: What sort of situation would have
someone tipping over and allowing to fall a compressor WHILE IT WAS
FRIGGIN' RUNNING?

There is no way that could have damaged the con-rods if it were off.
So...
What the HELL did you do? (And maybe WHY would be a good one, too.)

LLoyd


Actually , I was backing a load of lumber in and the end of a 2x4 12 feet
long pushed it over . I was watching the other side to be sure I didn't back
into one of the legs of the carport that's now my shop space . Compressor
wasn't running , wasn't even hooked up . It landed on the pulley , pushed
the crank bearings out and snapped both rods . eBay has 'em for 22 bucks
each , and I shoulda repaired it then ...
The point has been rendered moot . I tore the new unit down , discovered
that the top 2 rings on both pistons appear to have been installed upside
down . Bottom edge of both was shiny , top edge has never touched the
cylinder wall . No wonder there was blowby ! So I did a light hone on both
cylinders and turned the rings over , seems to have solved the problem . But
next trip to Memphis I'm bringing the other pump up for parts to repair the
one with busted rods .
--
Snag
out in
the shop

"Snag's Shop" fired this volley in
:

Actually , I was backing a load of lumber in and the end of a 2x4 12
feet
long pushed it over .

Amazing. I cannot even conceive of moving that far, that hard, against
something I could _feel_and_hear_ when I hit it -- even in a large pickup
truck.

Oh, well. If the con-rods are only $22 each, it can't be much of
compressor pump, anyway.

Lloyd

"Lloyd E. Sponenburgh" lloydspinsidemindspring.com wrote in message
. 3.70...
"Snag's Shop" fired this volley in
:

Actually , I was backing a load of lumber in and the end of a 2x4 12
feet
long pushed it over .

Amazing. I cannot even conceive of moving that far, that hard, against
something I could _feel_and_hear_ when I hit it -- even in a large pickup
truck.

Oh, well. If the con-rods are only $22 each, it can't be much of
compressor pump, anyway.

Lloyd

Ya know Lloyd I used to have respect for you . You weren't there , don't
know the situation or even what the compressor looks like . And yet you feel
you need to judge me - and to judge my equipment to boot ! Everyone isn't
flush enough to buy the very best of everything . I consider myself lucky to
have what I do , whether top-of-the-line or barely adequate .
--
Snag

On Sunday, September 15, 2013 3:34:56 PM UTC-7, Lloyd E. Sponenburgh wrote:

Oh, well. If the con-rods are only $22 each, it can't be much of

compressor pump, anyway.

http://eatoncompressor.wiredprreview.com/

On Sun, 15 Sep 2013 17:15:09 -0500, "Snag's Shop"
wrote:

Lloyd E. Sponenburgh wrote:
On 9/14/2013 9:57 PM, 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


All this talk of repairing con-rods is silly. Make new ones, if you
must.

BUT! My real question is this: What sort of situation would have
someone tipping over and allowing to fall a compressor WHILE IT WAS
FRIGGIN' RUNNING?

There is no way that could have damaged the con-rods if it were off.
So...
What the HELL did you do? (And maybe WHY would be a good one, too.)

LLoyd


Actually , I was backing a load of lumber in and the end of a 2x4 12 feet
long pushed it over . I was watching the other side to be sure I didn't back
into one of the legs of the carport that's now my shop space . Compressor
wasn't running , wasn't even hooked up . It landed on the pulley , pushed
the crank bearings out and snapped both rods . eBay has 'em for 22 bucks
each , and I shoulda repaired it then ...
The point has been rendered moot . I tore the new unit down , discovered
that the top 2 rings on both pistons appear to have been installed upside
down . Bottom edge of both was shiny , top edge has never touched the
cylinder wall . No wonder there was blowby ! So I did a light hone on both
cylinders and turned the rings over , seems to have solved the problem . But
next trip to Memphis I'm bringing the other pump up for parts to repair the
one with busted rods .
--
Snag
out in
the shop

Greetings Snag,
I've been reading this thread and if it was me I would weld the damn
things. Only because it would be good practice. If the compressor
ended upworking then that's great. If the rods break catastrophically
then you just get some entertainment. And a great story to tell
friends when you are shooting the breeze. I would not depend on the
machine though. Make sure you have another compressor online and ready
to go. And some advice for your other pump. The last pump I bought
came with instructions to run unloaded for an hour before regular use.
Just let it pump to the atmosphere. Failure to do so would cause lots
of blow by. The pump was from Grainger.
Eric

wrote in message
...
On Sun, 15 Sep 2013 17:15:09 -0500, "Snag's Shop"
wrote:

Lloyd E. Sponenburgh wrote:
On 9/14/2013 9:57 PM, 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


All this talk of repairing con-rods is silly. Make new ones, if you
must.

BUT! My real question is this: What sort of situation would have
someone tipping over and allowing to fall a compressor WHILE IT WAS
FRIGGIN' RUNNING?

There is no way that could have damaged the con-rods if it were off.
So...
What the HELL did you do? (And maybe WHY would be a good one, too.)

LLoyd


Actually , I was backing a load of lumber in and the end of a 2x4 12
feet
long pushed it over . I was watching the other side to be sure I didn't
back
into one of the legs of the carport that's now my shop space . Compressor
wasn't running , wasn't even hooked up . It landed on the pulley , pushed
the crank bearings out and snapped both rods . eBay has 'em for 22 bucks
each , and I shoulda repaired it then ...
The point has been rendered moot . I tore the new unit down , discovered
that the top 2 rings on both pistons appear to have been installed upside
down . Bottom edge of both was shiny , top edge has never touched the
cylinder wall . No wonder there was blowby ! So I did a light hone on
both
cylinders and turned the rings over , seems to have solved the problem .
But
next trip to Memphis I'm bringing the other pump up for parts to repair
the
one with busted rods .
--
Snag
out in
the shop

Greetings Snag,
I've been reading this thread and if it was me I would weld the damn
things. Only because it would be good practice. If the compressor
ended upworking then that's great. If the rods break catastrophically
then you just get some entertainment. And a great story to tell
friends when you are shooting the breeze. I would not depend on the
machine though. Make sure you have another compressor online and ready
to go. And some advice for your other pump. The last pump I bought
came with instructions to run unloaded for an hour before regular use.
Just let it pump to the atmosphere. Failure to do so would cause lots
of blow by. The pump was from Grainger.
Eric

I tried ... one came out very nice , the other was a miserable failure .
New rods will be here later this week . Learned a lot about welding
oil-soaked aluminum ...
That new pump came in a very beat up box , no instructions at all . It had
been turned upside down at some point and all the oil was gone . Had some
other problems too but they were minor . I ended up getting a 25% refund ...
--
Snag

On Sun, 15 Sep 2013 14:01:37 -0500, "Lloyd E. Sponenburgh"
lloydspinsidemindspring.com wrote:

On 9/14/2013 9:57 PM, 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


All this talk of repairing con-rods is silly. Make new ones, if you
must.

What, a little plumber's tape and Chiwanese screws won't last?


BUT! My real question is this: What sort of situation would have
someone tipping over and allowing to fall a compressor WHILE IT WAS
FRIGGIN' RUNNING?

Simple. The wide receiver didn't see it in his way as he ran for the
touchdown in Snag's shop. Either that or the QB tossed the beer too
high and the receiver didn't see the comp.


There is no way that could have damaged the con-rods if it were off.
So...
What the HELL did you do? (And maybe WHY would be a good one, too.)

I'd like to know how they were damaged, too. You shouldn't see that
unless he snapped the head off the sump and the little legs done
bended too much. But the crank would be the most likely piece to
break, not either of the rods, and certainly not both. Pistons are
lightweight.

--
Try not to become a man of success but
rather try to become a man of value.
--Albert Einstein

On Saturday, September 14, 2013 9:57:02 PM UTC-4, Snag's Shop wrote:


Is this a waste of time , or do I stand a decent chance of having this

work ?

--

Snag

out in

the shop

I think it is a waste of time if you have some better things to do. But if you have spare time, then do it. It might work and if it does not, you will have learned from it. But only worth doing if there is nothing else to do.

I do a bunch of things that are not worth doing. Usually what I learn is that doing something takes a lot more time than I thought it would.

Dan

Dan

On Saturday, September 14, 2013 9:57:02 PM UTC-4, 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 ?

--

Snag

out in

the shop

If one of those repaired rods breaks, then you can find out how expensive the other compressor parts are - it could take out a piston, the crank case or...

Craigslist, ebay, northern tool, harbor freight are full of cheap compressors.

On Monday, September 16, 2013 11:05:03 AM UTC-7, rangerssuck wrote:

Craigslist, ebay, northern tool, harbor freight are full of cheap compressors.

.... which more often than not aren't worth the time of day to spend time looking at:

http://www.eatoncompressor.com/page/page/518643.htm

On Saturday, September 14, 2013 9:57:02 PM UTC-4, 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 ?

--

If it tipped over and the pulley didn't bend BUT it broke the rods I
would say it was junk to begin with. Just how much play is in that
crankshaft to allow it to shift far enough to break the rods?

TIG will just cause problems in the HAZ. Just holding them in alignment
and welding won't be much good since the rods will then build up
stresses in other areas, those will be enough to cause flex or breakage
as well.

If this is a good brand you can probably buy all the parts easy enough.

--
Steve W.

"Snag's Shop" wrote in message
...
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 ?
--
Snag
out in
the shop

The chance that it will work without issue is virtually non-existent.
The chance that you'll get proper alignment when you assemble the broken
pieces is not good, and the notion that they will remain where you put them
when they are welded borders on the absurd. All you'll need is a loss of
parallelism between the wrist pin and crank journals and it won't perform
well, if at all.

Consider this. If the rods snapped when the compressor tipped over--they
most certainly must be made of gray iron, which does not enjoy being welded.

My money says you should pursue other options. However, if you do continue
the course, I'd enjoy hearing how it turns out.

Harold