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02-06-2015, 01:11 PM | #1 |
Join Date: Mar 2014
Location: Mexico
Posts: 134
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Chineros, I am in the process of engine assembling. I need to tight the cylinder hed bolts but I am confused. Zongshen uses cylinder head bolt 8-12 N.m, connecting bolt of cylinder head 10-12 N.m, and cylinder head nut 20-30 N.m. Yamaha TW200 recommends cylinder head bolts 22 N.m, socket head bolts 20 N.m, and bolts 10 N.m. Should I use only tw200 recommendation or zongshen?. By the way, I don´t know what exactly are connecting bolt of cylinder head and cylinder head nut (there is no figure).
Saludos
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Hector Mountrack Vento 2006 |
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02-06-2015, 04:06 PM | #2 |
Join Date: Jul 2008
Location: Idaho
Posts: 25,054
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If you post photos of the bolts/nuts, we can help you to determine the torque values.
Since the two engines are virtually identical, I always use the Yamaha torque specifications.
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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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02-06-2015, 11:22 PM | #3 | |
Join Date: Mar 2014
Location: Mexico
Posts: 134
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Quote:
Gracias y Saludos
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Hector Mountrack Vento 2006 |
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02-06-2015, 11:35 PM | #4 |
Join Date: Jul 2008
Location: Idaho
Posts: 25,054
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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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02-09-2015, 03:32 PM | #5 |
Join Date: Mar 2014
Location: Mexico
Posts: 134
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Hi, I assembled the engine but notice the cam chain tensioner is diferent from Spud´s one and that mentioned in tw200 service manual. I wonder if mine is incomplete since it does not have the bolt that spud´s tensioner has.
Also, I learned that the chain is very tight when installing the tensioner. I am confused since tw200 service manual recommends a 0.5 mm of tensioner rod position. Mine is about 0.11 mm and can´t adjust it ´til 0.5 mm. The next video shows the difference in tension when releasing the spring (tension cam chain) and when the spring is compressed (loose cam chain) In other words, the tensioner can´t be adjusted.
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Hector Mountrack Vento 2006 |
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02-09-2015, 04:27 PM | #6 |
Join Date: Jul 2008
Location: Idaho
Posts: 25,054
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The tensioner is automatic. When you release the screwdriver the tension is set properly. Your tensioner is working as it should.
You are missing the end bolt which keeps oil in the engine, and dirt from entering the engine. Can you find another bolt which fits the hole?
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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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02-18-2015, 05:38 PM | #7 | |
Join Date: Mar 2014
Location: Mexico
Posts: 134
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Quote:
Saludos Chineros
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Hector Mountrack Vento 2006 |
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02-18-2015, 07:48 PM | #8 |
Join Date: Jul 2008
Location: Idaho
Posts: 25,054
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Personally, I would not drill the carburetor jets. Mikuni main jets are very inexpensive, if purchased from the following vendor.
https://www.rockymountainatvmc.com/p...uni%20n102/221 You can learn more about carburetor jets for you Zong by reading the following threads. http://www.chinariders.net/showthread.php?t=6501 http://www.chinariders.net/showthread.php?t=6528
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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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02-25-2015, 08:36 PM | #9 | |
Join Date: Mar 2014
Location: Mexico
Posts: 134
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Quote:
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Hector Mountrack Vento 2006 |
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03-01-2015, 11:33 PM | #10 |
Join Date: Jun 2014
Location: NW Arkansas
Posts: 453
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Hey Hect any news on the TK jets? I have a Teikei MV30 which nearly identical to the MV28 that Spud and many others have put together ton of resources for.
After doing some mods that created a lean condition, I had my TK main"128" jet drilled out an estimated "couple sizes" by a local shop this week which helped a bit, but I will be ordering a variety of those Mikuni jets so I have numbers to work with. Also, I saw that Sigma 6 jets makes jet performance kits for a variety Zongs and my SSR with TK, I have not asked them if they sell individual TK jets however.
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2013 SSR XF-250 |
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03-03-2015, 01:49 AM | #11 | |
Join Date: Mar 2014
Location: Mexico
Posts: 134
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Quote:
http://www.keihin-na.com/company/keihin-de-mexico/ Saludos
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Hector Mountrack Vento 2006 |
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02-19-2015, 12:44 AM | #12 |
Join Date: Mar 2009
Location: Sardis, BC, Canada
Posts: 25,977
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Jets are even cheaper when purchased directly from China. Shipping is often free.
I drill jets occasionally, but I use a numbered drill bit set that has many sizes in between the typical 64ths.
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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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02-19-2015, 01:28 AM | #13 |
Join Date: Jan 2015
Location: arkansas
Posts: 297
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1/16th is way too big for a main jet. I have drilled jets and you use a oriface drill set and a pin vice to hold the bit. I can't give exact sizes off top of my head, they are out in the garage/shop. You can solder a too big jet completely shut and start over. There are charts on the internet that give the hole size that corilates with jet sizes. John
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02-23-2015, 12:18 AM | #14 |
Join Date: Mar 2009
Location: Sardis, BC, Canada
Posts: 25,977
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It's easy with Mikuni jets, because they're Metric. A 100 jet means 1.00mm, a 110 jet means 1.1mm, etc.
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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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02-24-2015, 11:34 PM | #15 | |
Join Date: Mar 2014
Location: Mexico
Posts: 134
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Quote:
Saludos Chineros
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Hector Mountrack Vento 2006 |
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