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Old 06-28-2013, 08:27 AM   #1
twwhitey OP
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Casting sand in coolant?

After hearing all morning about the record temps about to hit SoCal right before throwing my leg over my SE this morning to head to work I take a quick glance at the coolant in the reservoir and notice what "looks" like sand in the coolant. Haven't had a chance to take another look now that I'm at work (I was running late) but it seemed to settle and sit like sand (and at first glance not like oil). The water pump was rebuilt by a reputable KTM dealership here in SoCal 2000 miles ago (at the only the 5800mile mark). I'm assuming this might be the LC8 casting sand issue I've heard about? if not (if it's oil) and knowing the WP was rebuilt only 2K miles ago what else could it be? Any thoughts out there?

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Old 06-28-2013, 08:56 AM   #2
charlie264
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The casting sand in my SE's coolant system was a dark grey gunky stuff. Could that just be say calcium carbonate or some other mineral salts.
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Old 06-28-2013, 09:48 AM   #3
HeatXfer
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Dump it out and see if it's sand or hard water scale that's accumulated.
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Old 06-28-2013, 10:19 AM   #4
twwhitey OP
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Quote:
Originally Posted by charlie264 View Post
The casting sand in my SE's coolant system was a dark grey gunky stuff. Could that just be say calcium carbonate or some other mineral salts.
I would say dark grey gunky stuff is a pretty accurate description. Pulled some out of the bottom the reservoir with a straw and it's definitely got a very fine sandy grit to it.
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Old 06-28-2013, 10:38 AM   #5
bajamcguide
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Time to do a good flushing of the system, replace the coolant and burp the system. should be done soon, as the left over casting sand in the system will damage the WP seal and shaft. Good Luck
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Old 06-28-2013, 11:16 AM   #6
twwhitey OP
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Originally Posted by bajamcguide View Post
Time to do a good flushing of the system, replace the coolant and burp the system. should be done soon, as the left over casting sand in the system will damage the WP seal and shaft. Good Luck
yep... to be honest its an astonishing amount of sediment in the reservoir and as I usually park it on the center stand I only noticed it because I left it on the side stand last night and accumulated on that side. crazy...

Looks like in addition to the head2wind jet kit I'll be doing a complete coolant flush as well. Good thing it's Friday
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