Foreign object in block during cam swap
Foreign object in block during cam swap Hey everyone. I started on my cam swap today and when I got to removing the water pump I found a chunk of metal in one of the coolant channels. Here are some pictures of it. Is this part of the pump that failed and tried to go through the cooling system or what? Should I be concerned?
Here is what caught my eye when I pulled the pump off:
Here is one shot of the piece after I pulled it out:
Here is a different angle of the piece of metal:
On another note this is what I was greeted with when pulling the coolant hose from the TB. The last person must have been running just water through the system.
Here is what caught my eye when I pulled the pump off:
Here is one shot of the piece after I pulled it out:
Here is a different angle of the piece of metal:
On another note this is what I was greeted with when pulling the coolant hose from the TB. The last person must have been running just water through the system.
I think it is too large to be the missing portion of the TB coolant line as it is nearly 2 inches long and about as large as the entire coolant line on that side of the TB. It also looks like it might have been rectangular before it was mangled.
Launching!
Joined: May 2012
Posts: 209
Likes: 1
From: NC
Magnetic or not? To be honest i do not have a clue - does not look like anything from a radiator core or a water pump impeller. I do know one thing - i would question flushing the coolant system to remove possible metal shards to further prevent damage to the radiator now that it is removed.
Magnetic or not? To be honest i do not have a clue - does not look like anything from a radiator core or a water pump impeller. I do know one thing - i would question flushing the coolant system to remove possible metal shards to further prevent damage to the radiator now that it is removed.
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hey Decadence! This is very strange but i recently had overheating issues with my LS1..and guess what, I also found a piece of metal in my water pump...heres my thread on tgo:
http://www.thirdgen.org/techboard/lt...-overheat.html
it's very weird, but I'll be flushing the engine water jacketing and radiator to make sure that was the only piece. I dont need more metal wiping out my new pump when i install it. Let me know if you get to the bottom of your search. Today i torched my old pump to remove the impeller and it looks fine, so does the internals of the water pump cast housing....so i have NO CLUE where my piece of metal came from....weird.
http://www.thirdgen.org/techboard/lt...-overheat.html
it's very weird, but I'll be flushing the engine water jacketing and radiator to make sure that was the only piece. I dont need more metal wiping out my new pump when i install it. Let me know if you get to the bottom of your search. Today i torched my old pump to remove the impeller and it looks fine, so does the internals of the water pump cast housing....so i have NO CLUE where my piece of metal came from....weird.
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Verdad Gallardo Launching!
Joined: May 2012
Posts: 209
Likes: 1
From: NC
This is just odd, i still cannot think of any possible way for anything like this to exist in a coolant system or even any possible machining processes that would leave the opportunity for it to happen 
The only thing it somewhat resembles is a cast trunion nut
The only thing it somewhat resembles is a cast trunion nut
TECH Fanatic
Joined: Jun 2011
Posts: 1,343
Likes: 8
From: Katy, TX
if the heads were ever off the car its quite possible that someone accidentally dropped the foreign object into the coolant jacket openings on the block deck surface. That would explain how the object made it to that point in the coolant path, but not into the pump yet.
hey Decadence! This is very strange but i recently had overheating issues with my LS1..and guess what, I also found a piece of metal in my water pump...heres my thread on tgo:
http://www.thirdgen.org/techboard/lt...-overheat.html
it's very weird, but I'll be flushing the engine water jacketing and radiator to make sure that was the only piece. I dont need more metal wiping out my new pump when i install it. Let me know if you get to the bottom of your search. Today i torched my old pump to remove the impeller and it looks fine, so does the internals of the water pump cast housing....so i have NO CLUE where my piece of metal came from....weird.
http://www.thirdgen.org/techboard/lt...-overheat.html
it's very weird, but I'll be flushing the engine water jacketing and radiator to make sure that was the only piece. I dont need more metal wiping out my new pump when i install it. Let me know if you get to the bottom of your search. Today i torched my old pump to remove the impeller and it looks fine, so does the internals of the water pump cast housing....so i have NO CLUE where my piece of metal came from....weird.
I'll check on that before I put the water pump back on. Maybe I'll go ahead and add a 160* to it while I'm at it.
if the heads were ever off the car its quite possible that someone accidentally dropped the foreign object into the coolant jacket openings on the block deck surface. That would explain how the object made it to that point in the coolant path, but not into the pump yet.
