05-11-2017, 09:13 PM | #61 | |
Join Date: Oct 2015
Location: FL, GA, NC
Posts: 771
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Quote:
Thanks for the link to the AJP PR5 Service Manual. It's nicely done with color photos. I noticed the AJP engine uses the metal mesh oil filter. jb
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2016 Honda CB500F......2017 Triumph Street Twin 2014 XT 250........ |
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05-12-2017, 12:59 AM | #62 |
Join Date: Jul 2008
Location: Idaho
Posts: 25,054
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Kat,
Thanks for providing the link to the AJP PR5 Service Manual. I have added this link under the "Manuals" subheading in the RX3 Tech Sticky, which is pinned to the top of this forum. http://www.chinariders.net/showthread.php?t=14228
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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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05-12-2017, 01:27 PM | #63 |
Join Date: May 2007
Location: Warshington
Posts: 928
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Spud , have you read any of the AJP RX3 like bikes having issues with the valves receding like yours did? There's probably not to many with the miles you put on yours so time will tell. rj
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Live Zong, and Prosper |
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05-12-2017, 01:37 PM | #64 |
Join Date: Jul 2008
Location: Idaho
Posts: 25,054
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No, I have not heard of this problem occurring with any other NC250 engine in other motorcycle. I'm pleased to hear that many RX3 owners have reported their valve clearances have stabilized. However, if you ride many miles and the valve clearances won't stabilize, something is wrong.
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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 Last edited by SpudRider; 05-12-2017 at 02:31 PM. |
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05-12-2017, 02:44 PM | #65 | |
Join Date: Dec 2016
Location: Western PA
Posts: 363
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Quote:
The sheer number of these things around, I'd be surprised if patterns didn't emerge pretty quickly. |
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05-16-2017, 12:56 AM | #66 |
Join Date: Jul 2008
Location: Idaho
Posts: 25,054
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Today I passed 27,000 miles on the odometer, which is about 4,500 miles after I did the top end rebuild of my engine. I will check the valve lash again in a week or so. The RX3 is running very well, and getting excellent fuel mileage (70 mpg).
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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 Last edited by SpudRider; 05-16-2017 at 04:08 AM. |
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05-18-2017, 10:44 PM | #67 |
Join Date: Jul 2008
Location: Idaho
Posts: 25,054
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Today I checked the valve lash with about 27,250 miles on the odometer. The exhaust valves had closed about .01 mm, and the intake valves had not moved.
So far, I am very pleased with the results. I will check the valve lash again in about 2,000 miles.
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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 Last edited by SpudRider; 05-27-2017 at 08:01 AM. |
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05-19-2017, 11:37 AM | #68 |
Join Date: Mar 2010
Location: Volcano, Ca
Posts: 7,112
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That's great news Spud!.....and sounds much more like my results. My intakes never seem to move, just the exhausts have closed up a little each time but I need to start putting on more miles now that the rain has finally stopped.
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"Light a fire for a man, and you heat him for a day. Light a man on fire, and you heat him for the rest of his life." 2007 Suzuki DRZ400S (SM convert) 2009 Q Link XP 200 1967 BSA B25 250cc Starfire 2022 Royal Enfield Interceptor 650 2023 Royal Enfield Scram 411 1948 Royal Enfield Model G 350 |
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04-06-2018, 08:39 PM | #69 |
Join Date: Apr 2018
Location: Colorado
Posts: 29
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Spud, Have your remained stable after you did the rebuild? You should do a tutorial video series on how to do this stuff! Just awesome. For a person who is mechanically challenged it would be great to have someone that explains the what and how to do this kind of thing. Very impressive you can get the parts for this bike so affordably.
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04-09-2018, 10:27 AM | #70 | |
Join Date: Mar 2010
Location: Volcano, Ca
Posts: 7,112
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Quote:
From what I understand, he bought another bike and is involved with that now. Others can chime in on what I'm lacking.
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"Light a fire for a man, and you heat him for a day. Light a man on fire, and you heat him for the rest of his life." 2007 Suzuki DRZ400S (SM convert) 2009 Q Link XP 200 1967 BSA B25 250cc Starfire 2022 Royal Enfield Interceptor 650 2023 Royal Enfield Scram 411 1948 Royal Enfield Model G 350 |
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04-09-2018, 11:30 PM | #71 | |
Join Date: Oct 2015
Location: FL, GA, NC
Posts: 771
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Quote:
I'd be curious about the fate of his RX3. jb
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2016 Honda CB500F......2017 Triumph Street Twin 2014 XT 250........ |
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04-10-2018, 10:23 AM | #72 |
Join Date: Mar 2010
Location: Volcano, Ca
Posts: 7,112
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Same here. He was the Grand Poo-bah of the Cult of the Zong and probably their biggest cheerleader. He sold a lot of bikes for them.
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"Light a fire for a man, and you heat him for a day. Light a man on fire, and you heat him for the rest of his life." 2007 Suzuki DRZ400S (SM convert) 2009 Q Link XP 200 1967 BSA B25 250cc Starfire 2022 Royal Enfield Interceptor 650 2023 Royal Enfield Scram 411 1948 Royal Enfield Model G 350 |
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09-08-2020, 12:04 AM | #73 | |
Join Date: Sep 2020
Posts: 1
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04-11-2021, 10:45 PM | #74 |
Join Date: Feb 2018
Location: RDU, NC
Posts: 683
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Is there a trick for getting the front cam chain guide in place?
I got a new head, did all the same work, and my engine sounds terrible. I followed all the steps exactly... but what I didn't check to see is if the bottom of the cam chain guide is supposed to fit in a notch or something. I just dropped it into the notches at the top. Charles. |
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05-11-2021, 03:41 PM | #75 |
Join Date: Feb 2018
Location: RDU, NC
Posts: 683
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Just as an FYI for those of you contemplating this, it is not necessary to remove the rear wheel or swingarm. Put the bike on the center stand. Jam an old paperback under the rear wheel, to support it. Remove swingarm bolt. The rear end will not move.
Quick order of disassembly: Unplug electrical connectors (stator, starter, ground, O2) Unplug the two coolant hoses, draining your coolant in the process. Remove the bolts that hold the intake manifold to the head Remove the exhaust pipe Remove the lower crash guards Remove the cradle under the engine. Engine now held on by swingarm bolt, one bolt on the cylinder head, and one more bolt at the rear. Loosen chain and remove countershaft sprocket Support the motor, remove those three bolts, then lower the motor to the floor. It's actually really quick and easy to get the motor in and out. Probably the easiest of any bike I've ever done. I did remove the radiator wings but didn't remove the tank - just lifted it to get access to the wiring. No tire removal or swingarm removal. Charles. |
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