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Enduro Engine - 2 stroke Cylinder, Piston, Tranny, Bearings, Clutch, Pipes & Silencers, etc. |
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Thread Tools | Display Modes |
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#1
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Oops, overheated ec300, what's the damage?
Was out yesterday and holed a radiator, didn't notice until a little later, no water in the rad and very little compression, bike wouldn't restart so got towed home. Looks like the barrel has gone a bronze colour (don't remember it being this colour before!).
What's the likely damage?? Thanks |
#2
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Likely need to replate the cylinder, check the head for flatness, piston, rings, and too end bearing ... maybe
PlusOnePerformance
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Steven Beane #275 PlusOnePerformance - Superior Service the World Over - Dearborn MI AMA District 14 (Michigan) Officer afterhourscycle.com Michigan's Beta and TM Race Headquarters |
#3
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Other than the color how does the cylinder look? Are there any scratches or missing plating? How do the piston and rings look?
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#4
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Just had the head off, the bore looks ok, the exhaust was full of water, drained the gearbox oil which didn't look to have water in it.
Does that sound like a warped head, passing water from the jacket into the cylinder and out of the exhaust port? |
#5
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Did it get hot enough to melt the cylinder head o-rings? That could be where the water in the exhaust came from
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Fred Overstreet 2010 EC250 SixDays 2004 GasGas EC300 -Sold to a good home 2006 GasGas EC250-Sold to a good home 2006 GasGas TXT 280 Pro |
#6
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Er, what o rings!! I think that might be the problem. Thanks
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#7
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Quote:
PlusOnePerformance
__________________
Steven Beane #275 PlusOnePerformance - Superior Service the World Over - Dearborn MI AMA District 14 (Michigan) Officer afterhourscycle.com Michigan's Beta and TM Race Headquarters |
#8
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1. Power valve disassembly/assembly instructions can be found on the main website here :
http://www.gasgasrider.org/pv_disassembly_mattr.pdf 2. You may need to replace your water pump impeller if it is the composite (phenol?) variety. An aftermarket high flow waterpump impeller is available. Water pump seal too... jeff
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#9
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Thanks Jeff, are the water pump issues related to running the engine without coolant?
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#10
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The stock plastic impeller melts if run with out coolant.
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