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Old 06-18-2015, 05:28 AM   #1
peteandrewd OP
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Location: Melbourne, Australia
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Crankcase Pressure Build-Up?

Hey guys. Got a bit of a rookie question.
I was installing new water pump seals and when it got time to re-fit the water pump impeller nut, I used a torque wrench and torqued it to spec.
However, when I was tightening the nut, the water pump impeller started turning a bit(probably about a quarter of a turn), and I could hear the engine cranking over and started to feel a bit of resistance. I know the water pump gear is connected to the crankshaft primary gear hence the reason for the engine turning over.

My question is, where would the pressure of been able to escape? Because at the time, I had a muffler plug in, the air filter in and the spark plug in.
Would it of blown any seals or a head gasket or anything?

Just bought the bike and am a little concerned, that's all.
Bike is a 2011 KTM 530 EXC.
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Old 06-18-2015, 05:40 AM   #2
matty86suk
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That sucks man, hate to say it but your bike is fucked. I will gladly take it off your hands at a salvage price... Piston rings have an acceptable leakage value, same with valves, don't sweat this. If you are really concern perform a compression and leak down test....or sell me your bike!!!
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Old 06-18-2015, 05:45 AM   #3
Bill the Bong
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Old 06-18-2015, 06:05 AM   #4
peteandrewd OP
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Quote:
Originally Posted by matty86suk View Post
That sucks man, hate to say it but your bike is fucked. I will gladly take it off your hands at a salvage price... Piston rings have an acceptable leakage value, same with valves, don't sweat this. If you are really concern perform a compression and leak down test....or sell me your bike!!!
Lol. I'll sell you it if it's stuffed..but you'd have to come to Australia to pick it up lol.
So seriously, nothing to worry about?
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Old 06-18-2015, 07:15 AM   #5
Navin
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Nothing.
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Old 06-18-2015, 07:17 AM   #6
matty86suk
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Quote:
Originally Posted by peteandrewd View Post
Lol. I'll sell you it if it's stuffed..but you'd have to come to Australia to pick it up lol.
So seriously, nothing to worry about?
How does it run??
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Old 06-18-2015, 07:25 AM   #7
peteandrewd OP
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Quote:
Originally Posted by matty86suk View Post
How does it run??
Haven't started it yet.
Sorry about the question guys. Just wasn't sure and wanted to clarify.
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Old 06-18-2015, 07:28 AM   #8
Navin
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Since it's bound to be said sooner or later, if the piston travelled the length of the cylinder more than once it now needs an oil change and valve adjustment. I'm pretty sure they measure rebuilds by the number of piston strokes on them because they are "race" engines.

No such thing as a stupid question, only stupid people! Doh!
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Old 06-18-2015, 07:34 AM   #9
Qaz
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Or in this case stupid answers.
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Old 06-18-2015, 07:42 AM   #10
Navin
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This is the most respected source of stupid answers! No need to look elsewhere!
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Old 06-18-2015, 10:07 AM   #11
davesupreme
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stupid is as stupid does.....
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