[MayedRUS]

Mc14. Russia. Jamed because of frost (winter) rings. Compression 3-4 at each cylinder. Once chiseled cylinder block, so default rings does not fit. Any hints?

 

[burcoty]

you chiseled the engine block? why in the hell would you do that? can you explain in a bit more detail, does it still have standard pistons?

 

[Big Al]

Do you mean that the bore has been increased? To increase engine capacity?

 

[MayedRUS]

Not me, but 2-nd owner before me.
Not for capacity, but for repair. In Russia it is usual method of repairing when engine wearing out, bore become ellipse and compression become low = repairing by make bore wider and circle and install thicker rings. I guess why this method unknown here :huh:
...i can`t find this "repairing" thicker rings and don`t know, if mc17-22 rings fits. Need halp by hint opcorn:

 

[K916]

Mayed, its called re-boring the cylinder, which is a common procedure all over the world... chiselled means to do it by hand using a chisel like this one

You need to first find out what Oversize pistons you are using and then buy the rings from a site like this one

http://www.cmsnl.com/honda-cbr250rr_model14664/

Once you have the part number, you could do a search and these guys may just have what you need

 

[MayedRUS]

:hail:
Thanks for link!
But they does not sell to Russia (((
And there are only for mc22... Are dimensions of piston the same?
For example does this fits to mc14?
http://cgi.ebay.com/CBR-250-MC22-Piston-and-Piston-Ring-x-4-sets-0-5mm-/170487255971?cmd=ViewItem&pt=AU_Motorcycle_Parts_Accessories&hash=item27b1d513a3#ht_2460wt_1141

And sorry my engrish