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Old 01-02-2011, 01:03 AM   #16
Oengus   Oengus is offline
 
Join Date: Oct 2009
Posts: 826
What it is as what it is not….

The Yingang YG250-NF has a Honda 250 DOHC 4-valve engine and that engine came in two version a standard NX250 and a AX-1 version the, the later has a performance cam and larger jets.

The YG250-NF also referred to as a YG250-6 made by Yingang has that Honda engine but none of the components that surround the original engine.

It would be impossible to verify which version of cam the engine has, verifying that would require a disassemble of both and then a comparison. I would highly doubt the engine has any alterations internally, simply because of the cost of do any modifications and testing would be prohibitive.

It does not have a copy of the Honda carburetor unless the PZ30 is one, that is very unlikely since its a low cost budget carburetor used on many other Chinese engines. It does not have the Honda air box design either, it actually has a cone filter and that is enclosed by a make shift air box.

The radiator is also make shift and over sized compared to the unit used on the NX or AX-1, the Honda version is narrow and tall and covered with a grill.


<A HREF="http://www.motobuys.com/yinyang-yg250nf-mass.html">The motorcycles is being sold online, it can be purchased for $2,475.00 dropped shipped to your door.
</A>

It is a low cost bike and low quality as well, these do actually go together, for example if you added the Honda carburetor and air box that costs around $750.00, add the Honda radiator another $350.00, the Honda radiator could easily be wrapped in a cowling, so then your at a total cost around $3,575.00 and would have what would be closer to a Honda. If the engine is the AX-1 (performance cam) version then with larger jets you would get 29hp and it should perform near the same as the original AX-1.

However the bikes frame is low quality as the welds are poor and appears to be poorly coated, basically it does not look to be made to last.

The bike has a Honda engine and it is surrounded by basically low cost Chinese components and that is why it cost only $2,475.00 it could be better but then the price goes up. The bike comes off as if engineered in somebody’s garage.

Considering it is all about cost in china and the bike is basically what is typically selling for $1,800.00 plus a better engine that adds $675.00 to its cost. It is a DOHC and with four valves and that is not something anyone can adjust themselves. Its not that simple and easy to adjust the valves on that engine as a SOHC with 2-valves, if you took it to a Honda mechanic they could, however the surrounding quality of it may get you some painful comments and a lack of serious consideration.

It’s all a trade off you could get a perfect bike out of Chinese manufacturing but the price is not going to be that much less then that of a Ninja250 or a Honda 250CBR. Those two models are being manufactured in Thailand and are as low cost as it gets.

The Chinese are not checking and testing, not to high standards, they are cranking out and selling.

The Yingang YG250-6 needs a better inspection of it frames and training of it welders, that frame needed to be coated to prevent it from rusting. The induction and cooling is inferior and would need improving for that bike to be considered as a value leader. Right now it comes off as just another cheaply made motorcycle with a more powerful engine. The motorcycles engine could be tuned by a Honda technician, but they may ridicule it and not applaud it.


LOOKS COOL THOUGH !


 
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