Help ID'ing an engine

gman4dx266 · 08-18-2011, 07:26 PM

I was wondering if anyone could help me identify which engine this is I have on my bike. My bike is a 2004 Flywing DirtMX 150cc. The only numbers stamped on the thing are these numbers stamped down by the shifter here (other than the 149cm3 for the size stamped on the cylinder):

Thanks in advance for the info!

katoranger · 08-18-2011, 07:37 PM

Got a pic of the whole engine?

gman4dx266 · 08-18-2011, 07:48 PM

Quote:

Originally Posted by katoranger

Got a pic of the whole engine?

Sure!

The Bike

The engine

katoranger · 08-18-2011, 10:00 PM

It looks similar to an xr100 engine, but not exactly.

gman4dx266 · 08-18-2011, 11:08 PM

Quote:

Originally Posted by katoranger

It looks similar to an xr100 engine, but not exactly.

Soooo...exactly WHAT is it, can you tell or do I have an odd one?! Lol

Weldangrind · 08-19-2011, 01:18 AM

I don't know the actual bore and stroke, but it sure looks like a CG125. They're nearly bulletproof.

humanbeing · 08-19-2011, 03:59 AM

OHV / 62mm x 49.5mm WMI from VIN will tells u who makes it.
It's same stroke as CG125. Many parts can jammed in

http://www.motorfans.com.cn/bbs/view...uthorid=290040

katoranger · 08-19-2011, 09:20 AM

CG125 makes more sense.

Weldangrind · 08-19-2011, 10:33 AM

I wonder if that means that a cylinder from a 200cc version of a CG125 will bolt on.

katoranger · 08-19-2011, 11:05 AM

I am sure it would.

Weldangrind · 08-19-2011, 03:08 PM

gman4dx266, if the bottom end would accept a larger cylinder, you could bolt on a top end that's intended for a 250 with a 67mm bore. With your existing crank, that would take you up to 175cc. I'm not sure if your existing cylinder head would bolt on, but they're cheap enough on eBay. Here's what I mean: Dirt Pit Bike Motor Cylinder Piston Ring Parts 250cc

FWIW, a pushrod engine that is advertised as 250 is actually closer to 230. It's my guess that a 200 or 230 pushrod (CG125 clone) would be a bolt-in deal in your bike. I recently picked up a beat 230cc China bike and transplanted the engine into an old XR200R with no trouble.

There's a ton of support for your engine on eBay, no matter which way you choose to go.

gman4dx266 · 08-19-2011, 07:47 PM

Its similar to that site written in chinese showing the cg125, except that mine is not electric start. Other than that it looks like it. Who makes it? And by parts I meant small things for example I need the potmetal nut that goes on and covers the oil filter screen and spring on the shifter side of the engine.

humanbeing · 08-19-2011, 09:40 PM

Who? Unless we knew who make the bike BUT from my rusty memory engine that had some Taiwan connection are stamped like that
no electric start = Based from older model IF had part number, finding compitable isn't that hard

gman4dx266 · 08-19-2011, 11:54 PM

All I know is that it says, on the steering head, Flywing 150 then has a serial number and says 2004 model year.

david3921 · 08-20-2011, 07:33 AM

Quote:

Originally Posted by gman4dx266

Its similar to that site written in chinese showing the cg125, except that mine is not electric start. Other than that it looks like it. Who makes it? And by parts I meant small things for example I need the potmetal nut that goes on and covers the oil filter screen and spring on the shifter side of the engine.

The spring should easy enough to get at a hardware store. I'm sure a suitable nut can be found also. Please take some pictures of the spring and nut location. Some of us have this stuff laying and can help you get your bike going.

08-18-2011, 07:26 PM	#1
gman4dx266 Join Date: Aug 2011 Posts: 26	Help ID'ing an engine I was wondering if anyone could help me identify which engine this is I have on my bike. My bike is a 2004 Flywing DirtMX 150cc. The only numbers stamped on the thing are these numbers stamped down by the shifter here (other than the 149cm3 for the size stamped on the cylinder): Thanks in advance for the info!
	0

08-19-2011, 01:18 AM	#6
Weldangrind Join Date: Mar 2009 Location: Sardis, BC, Canada Posts: 25,977	I don't know the actual bore and stroke, but it sure looks like a CG125. They're nearly bulletproof. __________________ 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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08-19-2011, 10:33 AM	#9
Weldangrind Join Date: Mar 2009 Location: Sardis, BC, Canada Posts: 25,977	I wonder if that means that a cylinder from a 200cc version of a CG125 will bolt on. __________________ 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

08-19-2011, 03:08 PM	#11
Weldangrind Join Date: Mar 2009 Location: Sardis, BC, Canada Posts: 25,977	gman4dx266, if the bottom end would accept a larger cylinder, you could bolt on a top end that's intended for a 250 with a 67mm bore. With your existing crank, that would take you up to 175cc. I'm not sure if your existing cylinder head would bolt on, but they're cheap enough on eBay. Here's what I mean: Dirt Pit Bike Motor Cylinder Piston Ring Parts 250cc FWIW, a pushrod engine that is advertised as 250 is actually closer to 230. It's my guess that a 200 or 230 pushrod (CG125 clone) would be a bolt-in deal in your bike. I recently picked up a beat 230cc China bike and transplanted the engine into an old XR200R with no trouble. There's a ton of support for your engine on eBay, no matter which way you choose to go. __________________ 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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08-18-2011, 07:37 PM	#2
katoranger Join Date: May 2007 Location: Altamont, Kansas Posts: 15,103	Got a pic of the whole engine?
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08-18-2011, 10:00 PM	#4
katoranger Join Date: May 2007 Location: Altamont, Kansas Posts: 15,103	It looks similar to an xr100 engine, but not exactly.
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08-19-2011, 03:59 AM	#7
humanbeing Join Date: Mar 2008 Posts: 2,436	OHV / 62mm x 49.5mm WMI from VIN will tells u who makes it. It's same stroke as CG125. Many parts can jammed in http://www.motorfans.com.cn/bbs/view...uthorid=290040
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08-19-2011, 09:20 AM	#8
katoranger Join Date: May 2007 Location: Altamont, Kansas Posts: 15,103	CG125 makes more sense.
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08-19-2011, 11:05 AM	#10
katoranger Join Date: May 2007 Location: Altamont, Kansas Posts: 15,103	I am sure it would.
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08-19-2011, 07:47 PM	#12
gman4dx266 Join Date: Aug 2011 Posts: 26	Its similar to that site written in chinese showing the cg125, except that mine is not electric start. Other than that it looks like it. Who makes it? And by parts I meant small things for example I need the potmetal nut that goes on and covers the oil filter screen and spring on the shifter side of the engine.
	0

08-19-2011, 09:40 PM	#13
humanbeing Join Date: Mar 2008 Posts: 2,436	Who? Unless we knew who make the bike BUT from my rusty memory engine that had some Taiwan connection are stamped like that no electric start = Based from older model IF had part number, finding compitable isn't that hard
	0

08-19-2011, 11:54 PM	#14
gman4dx266 Join Date: Aug 2011 Posts: 26	All I know is that it says, on the steering head, Flywing 150 then has a serial number and says 2004 model year.
	0