Zongshen CB250 ENGINE parts help

I need a set of RINGS. The guy I called, says, they are backordered.

Anyone know if rings from a different bike would work? does the cb250 means it's a replica of the Honda CB250?

Thanks.

Do you mean this engine (they call it CB250-G). If so it has nothing to do with any Honda CB250 model as far as I know:

http://www.zongshenmotor.com/zongshe...?imageid=19399

that's the one. I found some parts I needed in Australia.

Thank god for forums like this to help us out with the chinese models, as info is hard to get by

Does anyone have the HEAD TORQUE SPECS for that engine?

Thanks much in advanced

You looking for the torque specs for ALL the bolts in the head or just the 4 main bolts?

CC

4 main bolts - But all specs would be nice to receive also.

Thanks.

Not sure if we have a complete service manual for your engine round these parts, but off the top of my head and according to the QingQi200 manual, bikes in this size/class range use about 30Nm or (22fty/lbs) of torque for those 4 head bolts.

If you snugged it to 25ft/lbs it probably wouldn't destroy the engine.

:icon10:
CC

much appreciated:thumbsup::thumbsup:

Well, seems the company I found the rings from, actually make their own piston also for that engine and the rings aren't a good fit.

Anyone know where I can get OEM rings for the zongshen?

Thanks.

You may want to try ZongShen America.

http://www.zongshenamerica.com/

I seem to recall other people calling them regarding a Sierra 200 and getting a live person but that was a while back.

If they can't sell you the parts directly, maybe they can give you a reference to someone who can.

:popcorn:
CC

Just found that site after I posted.. I kept getting the International site, but didn't help me much.

Thanks alot Carl. I'll keep ya posted.

The wrong rings were my fault. They were for a 66.5 mm Piston and my specs say 69 x 62 bore and stroke. I must have a newer engine or something just not right.

Anyways, i'm in contact with Zongshen America right now and sent him all the specs for my engine.

Thanks.