Need help figuring out what is wrong with my HSUN 200GY - Page 3

TeamCheap · 05-04-2009, 06:33 AM

W 8O W That engine had some stress applied to it but then you did say you were going up around sixty at the time.
It does look bent.

Price it out both ways and I'd bet the difference between repairing and replacing the engine isnt a whole lot.

Of course getting an exact replacement engine might be harder than just adapting a readily available engine.

thanks for the pics.

katoranger · 05-04-2009, 06:49 AM

That rod is likely to have damage you don't see also. I would consider the whole engine toast and just get a replacement.

You can recover some cost be selling off the good parts still on the engine though.

Allen

Cal25 · 05-04-2009, 08:29 AM

Ditto what Allen said. The crank likely saw som abuse as well. And lots of little mettle parts to crunch around in the botoom of the motor.
Bummer.

TeamCheap · 05-04-2009, 09:27 AM

3 days, 4 hours left on the 200cc complete engine for $349-shipped.(if no one else jumps on it)
Its the pushrod, NON-counterbalanced version but they run just fine.
(no bidders yet but then I might just buy it)

BUG · 05-04-2009, 10:47 AM

Here's one $340 plus shipping ($95 ouch) includes carb, cdi and starter.

http://www.t-motorsports.com/product...ke-atveglf200/

Here's something in the for sale forum

http://chinariders.net/modules.php?n...ewtopic&t=7726

FastDoc · 05-04-2009, 11:12 AM

Bummer, PR. :(

Looks like a significant unplanned expense. I hope you have access to another form of transportation while your bike is down. Up until I saw those pics I thought you's be able to fix that motor, but now I would say don't bother.

TRY to call the warantee in. MAYBE you'll get lucky and surprise us all.

I'm also bummed. For all the little problems our CB's give us at least we (had) been able to say that the engines/trannies were good. :(

liverchip · 05-04-2009, 04:35 PM

What is the normal RPM your motor turned when doing 60MPH. Perhaps a valve floated? What did the valves look like? What there any sign of detonation before it went?(ie pinging?)

pizzarider · 05-04-2009, 05:00 PM

Quote:

Originally Posted by liverchip

What is the normal RPM your motor turned when doing 60MPH. Perhaps a valve floated? What did the valves look like? What there any sign of detonation before it went?(ie pinging?)

I was at 7500 RPM. It did start pinging before it just cut off.

liverchip · 05-04-2009, 05:21 PM

Sounds like it detonated.....I had an old VW that did the same thing. Too hot/lean and the piston melted.

FastDoc · 05-04-2009, 05:23 PM

Good point. That is exactly what it looks like.

PizzaRider:

Any mods to your exhaust, intake, or carb? What octane fuel were you running?

pizzarider · 05-04-2009, 09:08 PM

Quote:

Originally Posted by FastDoc

Good point. That is exactly what it looks like.

PizzaRider:

Any mods to your exhaust, intake, or carb? What octane fuel were you running?

No mods what-so-ever. Completely stock. Ran 87 Octane. In fact I also ran that Rotella T full synthetic oil that everyone was using. Thanks everyone for the help. I guess I am going to buy another engine when I can get up enough money. I would really like to get a new one at the lowest price possible. -like to break them in myself. I will be parting out my engine/starter etc. Everything not effected by this mishap is in great condition. Thanks again! -Cory

joebrads · 05-04-2009, 11:13 PM

i think you should use the highest octane you can get at station and i thought you don't use FULL synthetic oil. I might be wrong

SeerAtlas · 05-05-2009, 12:38 AM

PRider....

go here
http://www.dansmc.com/MC_repaircourse.htm

seer

Weldangrind · 05-05-2009, 02:00 AM

Bummer about your engine, but I like the idea of upgrading to a 250!

Ditto on the high octane fuel. Higher octane fuel has a slower flame front that will thwart detonation and run a bit cooler. It might be a little harder to start, but not much.

Which plug are you using? If you intend to wring out the new engine, you might want to move one heat range cooler.

What did the plug look like after the carnage? Do you have a photo?

FastDoc · 05-05-2009, 11:07 AM

This brings up some relevent issues for all of us. Are our bikes timed correctly from the factory? Are they jetted too lean? Excessive advance would have done that. What is our true compression ratio? Has anyone else had or heard of similar catastrophic failures? Is 7,500 RPM too fast for these bikes? Was this a material failure? (That's the conclusion I am leaning towards).

05-04-2009, 06:49 AM	#32
katoranger Join Date: May 2007 Location: Altamont, Kansas Posts: 15,103	That rod is likely to have damage you don't see also. I would consider the whole engine toast and just get a replacement. You can recover some cost be selling off the good parts still on the engine though. Allen __________________ You meet the nicest people on a Honda Clone.
	0

05-04-2009, 11:12 AM	#36
FastDoc Join Date: Mar 2009 Location: Southeastern Washington desert Posts: 14,761	Bummer, PR. :( Looks like a significant unplanned expense. I hope you have access to another form of transportation while your bike is down. Up until I saw those pics I thought you's be able to fix that motor, but now I would say don't bother. TRY to call the warantee in. MAYBE you'll get lucky and surprise us all. I'm also bummed. For all the little problems our CB's give us at least we (had) been able to say that the engines/trannies were good. :( __________________ Happy to serve.
	0

05-04-2009, 04:35 PM	#37
liverchip Join Date: Nov 2006 Location: Mystery Spot Posts: 1,223	What is the normal RPM your motor turned when doing 60MPH. Perhaps a valve floated? What did the valves look like? What there any sign of detonation before it went?(ie pinging?) __________________ 2009 XR650L Big Red Pig Tusk bar risers 2007 X-Moto(Jetmoto) GY250 --mods--- 15/40 sprockets UNI Pod Filter 2007 Shineray TMS 200XYi--Betsy Betsy Mods:______________________ Acerbis DHH headlight FMF Powercore pipe Uni Pod Filter
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05-04-2009, 05:21 PM	#39
liverchip Join Date: Nov 2006 Location: Mystery Spot Posts: 1,223	Sounds like it detonated.....I had an old VW that did the same thing. Too hot/lean and the piston melted. __________________ 2009 XR650L Big Red Pig Tusk bar risers 2007 X-Moto(Jetmoto) GY250 --mods--- 15/40 sprockets UNI Pod Filter 2007 Shineray TMS 200XYi--Betsy Betsy Mods:______________________ Acerbis DHH headlight FMF Powercore pipe Uni Pod Filter
	0

05-04-2009, 05:23 PM	#40
FastDoc Join Date: Mar 2009 Location: Southeastern Washington desert Posts: 14,761	Good point. That is exactly what it looks like. PizzaRider: Any mods to your exhaust, intake, or carb? What octane fuel were you running? __________________ Happy to serve.
	0

05-04-2009, 06:33 AM	#31
TeamCheap Join Date: Jun 2006 Location: directly under the earths sun............NOW Posts: 2,302	W 8O W That engine had some stress applied to it but then you did say you were going up around sixty at the time. It does look bent. Price it out both ways and I'd bet the difference between repairing and replacing the engine isnt a whole lot. Of course getting an exact replacement engine might be harder than just adapting a readily available engine. thanks for the pics.
	0

05-04-2009, 08:29 AM	#33
Cal25 Join Date: Feb 2008 Location: Terrell and Grapevine Tx. Posts: 1,585	Ditto what Allen said. The crank likely saw som abuse as well. And lots of little mettle parts to crunch around in the botoom of the motor. Bummer.
	0

05-04-2009, 09:27 AM	#34
TeamCheap Join Date: Jun 2006 Location: directly under the earths sun............NOW Posts: 2,302	3 days, 4 hours left on the 200cc complete engine for $349-shipped.(if no one else jumps on it) Its the pushrod, NON-counterbalanced version but they run just fine. (no bidders yet but then I might just buy it)
	0

05-04-2009, 10:47 AM	#35
BUG Join Date: Nov 2008 Location: United States Posts: 144	Here's one $340 plus shipping ($95 ouch) includes carb, cdi and starter. http://www.t-motorsports.com/product...ke-atveglf200/ Here's something in the for sale forum http://chinariders.net/modules.php?n...ewtopic&t=7726
	0

05-04-2009, 11:13 PM	#42
joebrads Join Date: Mar 2009 Posts: 36	i think you should use the highest octane you can get at station and i thought you don't use FULL synthetic oil. I might be wrong
	0

05-05-2009, 12:38 AM	#43
SeerAtlas Join Date: Apr 2009 Posts: 770	PRider.... go here http://www.dansmc.com/MC_repaircourse.htm seer __________________ Seer's First LAW-"FLY THE PLANE!", fail that, and nothing else matters. 12th Law- Consider what marvels you might do if only you had tomorrow to live over again. Third Law-When someone tells you some thing "Can't Be Done", what they're really saying is They can't do it!!14th Law-Just because something "IS", doesn't necessarily mean it SHOULD be.. Eighth Law-The only true personal security is anonymity.Ninth Law-Humans tend to learn very little when speaking.10th Law-Some lives ARE worth taking
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05-05-2009, 02:00 AM	#44
Weldangrind Join Date: Mar 2009 Location: Sardis, BC, Canada Posts: 25,977	Bummer about your engine, but I like the idea of upgrading to a 250! Ditto on the high octane fuel. Higher octane fuel has a slower flame front that will thwart detonation and run a bit cooler. It might be a little harder to start, but not much. Which plug are you using? If you intend to wring out the new engine, you might want to move one heat range cooler. What did the plug look like after the carnage? Do you have a photo? __________________ 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

05-05-2009, 11:07 AM	#45
FastDoc Join Date: Mar 2009 Location: Southeastern Washington desert Posts: 14,761	This brings up some relevent issues for all of us. Are our bikes timed correctly from the factory? Are they jetted too lean? Excessive advance would have done that. What is our true compression ratio? Has anyone else had or heard of similar catastrophic failures? Is 7,500 RPM too fast for these bikes? Was this a material failure? (That's the conclusion I am leaning towards). __________________ Happy to serve.
	0