01-01-2015, 04:29 PM | #16 |
Join Date: Jul 2008
Location: Idaho
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That's true; I forgot to ask how many miles are recorded on the odometer. Has the engine lost power, or is the engine burning oil? If neither case is true, I would hone the cylinder, clean the piston, and install new piston rings and new gaskets. However, I would still clean the inside of the cylinder head, lap the valves, and purchase new valve stem seals.
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Spud "Never argue with an idiot. He will drag you down to his level, and beat you with experience." Mark Twain 2015 Zongshen ZS250GY-3 (RX3) 2006 Zongshen ZS200GY-2 (Sierra 200) 2005 Honda XR650L 2004 Honda CRF250X 1998 Kawasaki KDX220 Mods made to my Zongshen ZS200GY-2: http://www.chinariders.net/showthread.php?t=6894 |
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01-01-2015, 04:33 PM | #17 |
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Location: Idaho
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No, that photograph of the cylinder head is inverted. The area just below that imperfection is where the cam chain descends to the crankcase. I don't think that imperfection is an actual hole, or anything to worry about. It appears to be a minor imperfection in the casting.
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Spud "Never argue with an idiot. He will drag you down to his level, and beat you with experience." Mark Twain 2015 Zongshen ZS250GY-3 (RX3) 2006 Zongshen ZS200GY-2 (Sierra 200) 2005 Honda XR650L 2004 Honda CRF250X 1998 Kawasaki KDX220 Mods made to my Zongshen ZS200GY-2: http://www.chinariders.net/showthread.php?t=6894 |
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01-01-2015, 11:52 PM | #18 | |
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Location: Mexico
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Quote:
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Hector Mountrack Vento 2006 |
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01-01-2015, 11:54 PM | #19 | |
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Quote:
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Hector Mountrack Vento 2006 |
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01-02-2015, 12:40 AM | #20 |
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Based upon your answers, I think you are wise to bore and hone the cylinder as you planned.
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Spud "Never argue with an idiot. He will drag you down to his level, and beat you with experience." Mark Twain 2015 Zongshen ZS250GY-3 (RX3) 2006 Zongshen ZS200GY-2 (Sierra 200) 2005 Honda XR650L 2004 Honda CRF250X 1998 Kawasaki KDX220 Mods made to my Zongshen ZS200GY-2: http://www.chinariders.net/showthread.php?t=6894 |
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01-02-2015, 08:36 PM | #21 |
Join Date: Mar 2009
Location: Sardis, BC, Canada
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Agreed. That's a considerable number of miles.
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Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer |
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01-09-2015, 01:32 AM | #22 | |
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Location: Mexico
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Quote:
Thanks
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Hector Mountrack Vento 2006 |
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01-09-2015, 01:58 AM | #23 |
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One should always take the new piston to the machinist before he bores and hones the cylinder. If a competent machinist has the new piston, he should be able to do the job correctly.
__________________
Spud "Never argue with an idiot. He will drag you down to his level, and beat you with experience." Mark Twain 2015 Zongshen ZS250GY-3 (RX3) 2006 Zongshen ZS200GY-2 (Sierra 200) 2005 Honda XR650L 2004 Honda CRF250X 1998 Kawasaki KDX220 Mods made to my Zongshen ZS200GY-2: http://www.chinariders.net/showthread.php?t=6894 |
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01-12-2015, 11:35 AM | #24 |
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Location: Sardis, BC, Canada
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Hector, it is a good idea to choose the smallest diameter you can, so you have more bore options in the future. Take your cylinder and piston to the machine shop to get their opinion.
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Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer |
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01-15-2015, 01:06 AM | #25 | |
Join Date: Mar 2014
Location: Mexico
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Quote:
Saludos chineros (chineros are called people who ride a chinese bike).
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Hector Mountrack Vento 2006 |
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01-15-2015, 01:26 AM | #26 |
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Location: Idaho
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You are making good progress. I suggest you also order a new piston pin, which connects the piston to the connecting rod on the crankshaft. The piston pin is part #10 in the following diagram.
The piston pin is Yamama part #58L-11633-00-00.
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Spud "Never argue with an idiot. He will drag you down to his level, and beat you with experience." Mark Twain 2015 Zongshen ZS250GY-3 (RX3) 2006 Zongshen ZS200GY-2 (Sierra 200) 2005 Honda XR650L 2004 Honda CRF250X 1998 Kawasaki KDX220 Mods made to my Zongshen ZS200GY-2: http://www.chinariders.net/showthread.php?t=6894 |
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01-15-2015, 10:39 AM | #27 |
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Location: Mexico
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Got it already, I forgot to mention.
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Hector Mountrack Vento 2006 |
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01-15-2015, 11:47 AM | #28 |
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Hector, where is it winter in Mexico? I'm sitting in PV right now, and it is beautiful outside. I think it is about 28C.
Chineros! I love it!
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Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer |
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01-15-2015, 03:55 PM | #29 | |
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Location: Mexico
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Quote:
Saludos
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Hector Mountrack Vento 2006 |
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01-16-2015, 01:33 PM | #30 |
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Location: Sardis, BC, Canada
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I was actually north of Puerto Vallarta, in Bucerias. I'm home now, and it is 8C here right now; not too bad.
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Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer |
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