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Enduro Engine - 2 stroke Cylinder, Piston, Tranny, Bearings, Clutch, Pipes & Silencers, etc. |
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#31
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Quote:
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Back on a gassy! 2018 EC300! 🤘 Txt 280 07 to make me feel like a gumby again |
#32
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We had a 2018 engine on the bench and its bearings had no plastic cages. It was the first time the engine was opened. Unfortunately I had not taken any pics but couldn't know that this will be a point of discussion in the future.
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#33
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My bottom end just failed at 145hrs.Very disappointed.
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#34
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That sucks! What bike and model year if I may ask?
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#35
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2018 xc300.
Bought it at 52hrs. It hasn't been drowned since I've had it,so very surprised it failed.Will open it up next week & see what state it is in. |
#36
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Oh man, that's no fun. I am currently at 52 hours too
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#37
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Had a talk with a tuning pro, plastic cage bearings provide better RPM limit, but must be installed with utmost precision, pressure and heat wise,
so having failed bearing at certain hrs goes back to the person, who was assembling the engine. It is not to save a buck, since plastic cage bearing is more expensive, but more of a hurry, corporate pressure and expertise of engine assemblers. Remove, install steel cage bearing and avoid further damage. https://www.youtube.com/watch?v=5RSTnhQcNtw
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EC 300 2008 EC 300 2018 GP tenere 700 |
#38
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UPDATE. One main bearing rusty & completely failed. Other main bearing rusty.
Have never dropped this bike into a river or even had it in water up to the bottom of the airbox. Always run it after washing to help dry it off. I did buy it at 52hrs & now at 145hrs.Don't know how it got moisture in there? |
#39
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Perhaps previous owner took her for a swim.... hard to know when you haven't had the bike 100% from brand new. |
#40
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My case exactly, bought at 62 hrs, replaced top end, at 65 bottom fail, found rusty and failed bearings and crank inside. Crankcase chamber and transfer ports had darkish discoloration which looked like burned antifreeze deposits. Cleaned off with some chemicals. Piston was black underneath, indicating heat, even though sparkplug was richish.
Could be crankcase porosity, warped head, wrong head oring, previous owner neglection (drowning, pressure cleaning), failing plastic cage bearing, cylinder base gasket leak. Many options. Kind of not in a hurry to assemble the engine, since Im not sure if it could be a repeatory behaviour untill true culpit is found. Even worse case was documented on YT, but dont know if he resolved the exact cause.
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EC 300 2008 EC 300 2018 GP tenere 700 |
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