whirring noise zongshen 250

[papaoso]

Hello people, I own the ZS250GS and got a noise at the motor like something loose inside. it sound hardest in idle and cold, otherwise i noticed that the camshaft has some signs of wear, because I can not adjust properly the valves, so I thing the anterior owner run the bike w/ out oil.:grr:
wen I bought they have not the noise, (or only a little), and wen I changed the oil, it was full of an sustance brown like wood flour or something.

Well, I am not afraid to open the engine and check, but I thing is bad idea because......Were can I find parts.

The question is, can I replace the engine for other similar in size with some adaptations?

Or can I found engine parts somewhere?

Help me please.

[humanbeing]

It's based on Yammie. If u had plenty $ to burn, genuine Y... parts may work.
taobao.com + agent seems the most sensible way.
One of them:
http://item.taobao.com/item.htm?id=3469913830

[pete]

Whirring noise........ could be the turbine starting up....

[papaoso]

It's based on Yammie. If u had plenty $ to burn, genuine Y... parts may work.
taobao.com + agent seems the most sensible way.

I hardly try to find motor parts at taobao just in case, but...I don't Know how.
Sorry.

[papaoso]

Whirring noise........ could be the turbine starting up....
Well, sound like randomly grinding something, but, don't affect the working of the motor. in fact run very good.

[papaoso]

any ideas about put an alternative engine?
Is good idea open it to see what's happen?

[papaoso]

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

[papaoso]

Here the noise.

https://www.youtube.com/watch?v=ZnsiXnAfTx4&feature=youtu.be

[Weldangrind]

No, I don't have plenty of money. What you mind with Yamie?
Maybe's better forget the bike at the garage and try to save money in the future buy a real one Bike?

He means Yamaha. The engine is very similar to the Yamaha XT225, the TT-R230 and the TW200.

When you changed the oil, did you clean the oil filter in the side of the engine? The filter must go back in correctly, or no oil will get to the camshaft.

[papaoso]

He means Yamaha. The engine is very similar to the Yamaha XT225, the TT-R230 and the TW200.

When you changed the oil, did you clean the oil filter in the side of the engine? The filter must go back in correctly, or no oil will get to the camshaft.

Yes, the head look oiled, but the sound come mostly from the bottom.

[papaoso]

I see some affordable Lifan 200cc motors at EBAY.

Are compatible?

Can I swap w some adapt?

Were can I find specs, measures?

Thanks.

[Weldangrind]

I see some affordable Lifan 200cc motors at EBAY.

Are compatible?

Can I swap w some adapt?

Were can I find specs, measures?

Thanks.

The Lifan motors on eBay are designed to fit a Honda application. You might be able to make one fit, but it will not be simple.

Where do you live?

[papaoso]

The Lifan motors on eBay are designed to fit a Honda application. You might be able to make one fit, but it will not be simple.

Where do you live?

South Florida.
Do you know any Supplier close?

[Weldangrind]

I believe there was a supplier in Florida, but I think they've closed the shop.

Taobao is a source for parts, as Humanbeing indicated. Use Google Chrome, visit www.taobao.com (http://www.taobao.com) and allow Chrome to translate automatically. Search for ZS250GS, and see what appears.

[papaoso]

I believe there was a supplier in Florida, but I think they've closed the shop.

Taobao is a source for parts, as Humanbeing indicated. Use Google Chrome, visit www.taobao.com (http://www.taobao.com) and allow Chrome to translate automatically. Search for ZS250GS, and see what appears.

whata page taobao! that sacarry me :wtf::lol:
But I thing I can manage it.
I translated from english (well, from Spanish to English first) and to Chinese w google and c/ paste at taobao....and it works. i suppose That the agent in china is other steep, and the delivery time too. But I gona open the motor to see what's wrong, and send you some pics.:thanks:

[alex_in_az]

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

Any experience with aliexpress.com?

[Weldangrind]

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

[katoranger]

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

[papaoso]

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

[papaoso]

And the crankshaft looks fine too.

[papaoso]

No damage at piston & cylinder assembly,

[papaoso]

But..see the camshaft and bushing.

[papaoso]

The timing chain guide need be replaced.

[papaoso]

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]

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]

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

[papaoso]

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:hmm:

[Weldangrind]

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]

I found this, but cant target the valve seats or the timing chain guide or better the complete cylinder head assembly.
:hmm:
http://item.taobao.com/item.htm?spm=2013.1.1998246701.4.J6zF00&scm=1007.10152.2215.i3469913830&id=35829861256&pvid=79656133-d70c-4a59-b8b9-f7578b5ef22b

http://item.taobao.com/item.htm?spm=2013.1.20141003.9.SSHVqW&scm=1007.10011.3681.0&id=18313253147&pvid=efc8d572-baa3-4350-ab2d-2e9013b839f2

[papaoso]

I found this, but cant target the valve seats or the timing chain guide or better the complete cylinder head assembly.
:hmm:
http://item.taobao.com/item.htm?spm=2013.1.1998246701.4.J6zF00&scm=1007.10152.2215.i3469913830&id=35829861256&pvid=79656133-d70c-4a59-b8b9-f7578b5ef22b

http://item.taobao.com/item.htm?spm=2013.1.20141003.9.SSHVqW&scm=1007.10011.3681.0&id=18313253147&pvid=efc8d572-baa3-4350-ab2d-2e9013b839f2

I look for zongshen, zongshen motor, engine, zongsheng valve, zs250gs, zs172fmm, and nothing, sorry, any ideas?

[Weldangrind]

I went through nine pages on TB, but I couldn't find a complete cylinder head.

Another option is to rebuild your cylinder head using parts from a bike like Spud's. the cylinder heads are different, but I think the parts are the same. Search for LZX200GY-2 or ZS200GY-2.

The ZS200GS has the exhaust port on the left, and Spud's exhaust port is on the right. If you found a complete cylinder head for Spud's bike, you could just strip the parts off of it.

[papaoso]

http://youtu.be/UP0eArKq6K0

[Weldangrind]

Sounds good!

[culcune]

Good to see it! Please summarize what you did from when you first posted 2 months ago. These bikes seem to always have issues, and it would be nice to have a post of what you did to ultimately fix it.

[Weldangrind]

I'd like to learn about the process as well.