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Old 04-10-2017, 12:56 PM   #1
kalevi
 
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Aluminum Particles In Coolant (LS3)

I had my coolant system flushed today. What came out with the coolant was particles of aluminum ranging in size from too small for the eyes to see all the way up to about 1/8" diameter. The particles weren't shavings; they were more like small chunks.

I'm puzzled to where these particles could have come from. I thought possibly the water pump. Beyond that, I would have to assume that there has been catastrophic damage to the engine block or heads. The only metal to metal moving parts where the coolant passes (to my knowledge) is in the water pump.

The engine has recently been rebuilt; new: heads, cam, lifters, rods, pistons, and rod bearings.
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Old 04-10-2017, 01:57 PM   #2
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I would suspect the small particles are a direct result of the engine rebuild. I would take it back to the shop that did the rebuild immediately.
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Old 04-10-2017, 02:02 PM   #3
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I was really hoping there was just some random quirk to this motor someone would just say, "Ah, that's normal... forget about it..."

Looks like I'll be pulling the motor myself... Only reason I had a shop do it was because I didn't have time to do it myself... Trust no one!
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Old 04-10-2017, 06:10 PM   #4
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Random chunks of metal in the coolant system is never "normal" for an engine. Never. lol!
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Old 04-10-2017, 06:31 PM   #5
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Quote:
Originally Posted by gringo View Post
Random chunks of metal in the coolant system is never "normal" for an engine. Never. lol!
LOL I thought it might have been a new feature from GM:

$1,300 - Optional - Random Particles In Coolant System
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Old 04-10-2017, 07:22 PM   #6
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Quote:
Originally Posted by PalmerGA View Post
I would suspect the small particles are a direct result of the engine rebuild. I would take it back to the shop that did the rebuild immediately.
Agree ... I would actually probably have it flat-bedded over; don't think I'd want to be running the engine until I knew what the problem was and risk making the problem worse.
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Old 04-11-2017, 01:42 AM   #7
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Just spit balling here. Is this the first time the coolant has been changed? Was it done at time of rebuilt? Did you buy new or used? Just looking at maybe something pre existing. Could something like a radiator sealant been added in past?
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Old 04-11-2017, 06:45 AM   #8
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Yes there should be flushes of the systems after you have a engine rebuilt especially, but the radiator fluid is not so much a worry as the oil. My oil ....break in on the dyno; dump the driven racing br30, add 8 more quarts, 500 miles later dump again, 3000 miles with vr30 with high zinc to make the valves seals and other things well...then on too LS30 a full synthetic. break in; non synthetic, check oil for contaminants ; and I have a magnetic oil drain plug. Engine maker requires at least 3000 miles with non synthetic. There is no giant hot tanking of motors done usually at any rebuild shops and it does leave small particles. Good Luck.
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Old 04-12-2017, 05:45 PM   #9
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Any update?
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