whirring noise zongshen 250 - Page 2

alex_in_az · 12-27-2014, 04:00 PM

Quote:

Originally Posted by papaoso

Is my first bike in 30 years, I bought it cheap ($300.00) with the tank full

. and I spend $200.00 more replacing back shock (used), brake cylinder, spray paint, ignition coil and some durabond.
I really enjoy this project, but I am a little worry about this noise, is not good. I really want to find any relatively easy solution, but I start to loos my illusion at this project. Well, still having some hope.
There some pics.

That's a pretty sweet looking bike, I hope you get it sorted out

papaoso · 12-29-2014, 12:10 AM

Any experience with aliexpress.com?

Weldangrind · 12-31-2014, 12:04 PM

I've never used them, but I have used Taobao several times.

katoranger · 12-31-2014, 10:29 PM

I have a used motor. Have not tried to start it yet. Still on the trailer. We may give it a try tomorrow.

papaoso · 01-20-2015, 11:35 PM

Well..I open the engine and..
The connecting rod look fine, no gaps appreciated.

papaoso · 01-20-2015, 11:37 PM

And the crankshaft looks fine too.

papaoso · 01-20-2015, 11:39 PM

No damage at piston & cylinder assembly,

papaoso · 01-20-2015, 11:41 PM

But..see the camshaft and bushing.

papaoso · 01-20-2015, 11:42 PM

The timing chain guide need be replaced.

papaoso · 01-20-2015, 11:46 PM

Well, maybe I can fix the camshaft in a machine shop, and the guide..Taobao. Tomorrow I'll remove valves and let you know people.

Weldangrind · 01-21-2015, 12:39 AM

It looks like the top end was starved for oil. Maybe the oil filter was in backwards for a while, before the previous owner caught it.

The cylinder looks a little washed out, so it would be good to hone it. If you're buying parts from Taobao, you might as well buy a new camshaft and bushing, along with a new piston and rings.

papaoso · 01-23-2015, 05:53 PM

Admission valve seat massacred and loose! Valves an guides good, but need news rubber seals.

papaoso · 01-23-2015, 06:06 PM

Please, can somebody teach me how to find parts at taobao?

I need the admission valve seat, valve seals and timing chain guide.

Ill apreciate

Weldangrind · 01-23-2015, 09:01 PM

Sure!

Use Google Chrome, and allow it to translate automatically to the language of your choice. Use simple search terms, like "ZS250GS", and take your time. When you find things you would like, save them in your bookmarks.

After you have found what you want, tell us. We will give you more guidance after that.

Have fun!

papaoso · 01-24-2015, 09:50 AM

I found this, but cant target the valve seats or the timing chain guide or better the complete cylinder head assembly.

http://item.taobao.com/item.htm?spm=...9-f7578b5ef22b

http://item.taobao.com/item.htm?spm=...d-2e9013b839f2

12-31-2014, 12:04 PM	#18
Weldangrind Join Date: Mar 2009 Location: Sardis, BC, Canada Posts: 25,977	I've never used them, but I have used Taobao several times. __________________ 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
	0

12-31-2014, 10:29 PM	#19
katoranger Join Date: May 2007 Location: Altamont, Kansas Posts: 15,103	I have a used motor. Have not tried to start it yet. Still on the trailer. We may give it a try tomorrow. __________________ You meet the nicest people on a Honda Clone.
	0

01-21-2015, 12:39 AM	#26
Weldangrind Join Date: Mar 2009 Location: Sardis, BC, Canada Posts: 25,977	It looks like the top end was starved for oil. Maybe the oil filter was in backwards for a while, before the previous owner caught it. The cylinder looks a little washed out, so it would be good to hone it. If you're buying parts from Taobao, you might as well buy a new camshaft and bushing, along with a new piston and rings. __________________ 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
	0

01-23-2015, 09:01 PM	#29
Weldangrind Join Date: Mar 2009 Location: Sardis, BC, Canada Posts: 25,977	Sure! Use Google Chrome, and allow it to translate automatically to the language of your choice. Use simple search terms, like "ZS250GS", and take your time. When you find things you would like, save them in your bookmarks. After you have found what you want, tell us. We will give you more guidance after that. Have fun! __________________ 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
	0

12-29-2014, 12:10 AM	#17
papaoso Join Date: Dec 2014 Posts: 24	Any experience with aliexpress.com?
	0

01-20-2015, 11:46 PM	#25
papaoso Join Date: Dec 2014 Posts: 24	Well, maybe I can fix the camshaft in a machine shop, and the guide..Taobao. Tomorrow I'll remove valves and let you know people.
	0

01-23-2015, 06:06 PM	#28
papaoso Join Date: Dec 2014 Posts: 24	Please, can somebody teach me how to find parts at taobao? I need the admission valve seat, valve seals and timing chain guide. Ill apreciate
	0

01-24-2015, 09:50 AM	#30
papaoso Join Date: Dec 2014 Posts: 24	I found this, but cant target the valve seats or the timing chain guide or better the complete cylinder head assembly. http://item.taobao.com/item.htm?spm=...9-f7578b5ef22b http://item.taobao.com/item.htm?spm=...d-2e9013b839f2
	0