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Enduro Engine - 2 stroke Cylinder, Piston, Tranny, Bearings, Clutch, Pipes & Silencers, etc.


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  #21  
Old 08-13-2018, 07:20 PM
memphis2857 memphis2857 is offline
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Originally Posted by Desert Silver View Post
Latest and greatest problem. The damn bolts holding the exhaust manifold won't loosen even with an impact driver! The manifold is hitting the frame and blocking the cylinder from being removed. That bike is bound and determined to make me remove the engine. Hoping heat will loosen the bolts up. Anybody have a metal inner case gasket on their engine?


I pulled the cylinder off my 15 without taking the exhaust spigot off. Just pull it up off the studs and then twist it to the side a little and she pops right off


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  #22  
Old 08-19-2018, 02:14 PM
Desert Silver Desert Silver is offline
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Ended up doing the same thing but didn't want to have to remove the radiators. Guess I'm spoiled by my old 91 KTM. Even the 04 KTM 300 I worked on was a pita!
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  #23  
Old 08-20-2018, 02:42 PM
Desert Silver Desert Silver is offline
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Messaged RK Tech to ask if the their head mod will work on a 2015 300 Sat. and not a peep so far. My son wants more power without losing bottom end and I feel that head work is the only way. All they listed was the 2018 and 2019.
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  #24  
Old 08-20-2018, 04:58 PM
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john r b john r b is offline
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Most likely very similar.
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  #25  
Old 08-22-2018, 02:11 PM
Desert Silver Desert Silver is offline
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What piston is Gas Gas owners using in their 300's? Checked Wosiner and Wiesco and neither of them list a piston for 2015 300. I use forged pistons when ever possible as I feel they are a much stronger piston. If the cylinder has S3 21113 047 # stamped in the base surface is that a stock cylinder part # or one from S3?
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  #26  
Old 08-22-2018, 06:54 PM
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S3 makes the cylinder .
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  #27  
Old 08-23-2018, 07:51 AM
memphis2857 memphis2857 is offline
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Quote:
Originally Posted by Desert Silver View Post
What piston is Gas Gas owners using in their 300's? Checked Wosiner and Wiesco and neither of them list a piston for 2015 300. I use forged pistons when ever possible as I feel they are a much stronger piston. If the cylinder has S3 21113 047 # stamped in the base surface is that a stock cylinder part # or one from S3?


I just put a weisco piston in my 15 300. Got it from Halls Cycles


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  #28  
Old 08-23-2018, 02:53 PM
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Chris, how was the tko??
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  #29  
Old 08-23-2018, 02:56 PM
Desert Silver Desert Silver is offline
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Is that the Pro X one? wiesco lists a forged piston for the Gas Gas 300 ATV but only list a Pro X cast piston for the EC300
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  #30  
Old 08-23-2018, 06:16 PM
Jacob 'Berg Jacob 'Berg is offline
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Is that the Pro X one? wiesco lists a forged piston for the Gas Gas 300 ATV but only list a Pro X cast piston for the EC300
ATV should be the same motor.
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