I inherited a generic dirt bike engine from a friend who is moving. There is no brand name on the engine and very little text in general. All I can tell for sure is it's a 49 cc dirt bike engine. Can someone help me identify the maker (I suspect Chinese) and any other information from the serial number? Here's what's stamped on the engine:

IP39FMB
4K013416

I'm pretty sure that first letter is an "I", not a "1", since it doesn't have any serifs like the other two "1"s.

Is there any way to tell by looking at it whether it is a two-stroke or four-stroke engine? (Sorry, I'm not much of a mechanic!)

Thanks!
Char

 

Does it look like this one? Quad 50cc Engine 15545 - Quad from RNZ Parts UK


If you google "49cc IP39FMB" it seem to be in many china or Asian bikes.
http://www.alibaba.com/product-gs/53...i_chopper.html

 

Hmmmm, rather a lot, actually, without that curved pipe thingy on top. Here's a pic, sorry for not posting earlier:


I think you may have found my engine! I did try Googling the number first but for some reason, wasn't coming back with anything helpful. Thanks for the help, I'll check it out. :-)

 

I think the curved pipe is just the exhaust which changes according to if the motor goes into a ATV or motor bike.

 

well about 1 year later, I can solve your questions!
Its a chinese-brand motor, i got my new motorbike some months ago and it has the same code on its motor, "IP39FMB" , its a LIFAN-type motor, you can tell from the kick starter Soo, I bought a brand new motorbike, a 50cc chinese cub, who's name is Loncin, factory name XGJAO, Loncin Blade 50-R full name Thats all I can tell you for now From some sources, I heard that Loncin was importing these, and older versions of the Blade 50-R as a 50cc, but it was actually in the 80cc category(72cc actually)
But they got sued from other companies and they stopped now :'(