Cheap Cylinders from China

[Striker1423]

Ok not to waste money on what is very likely the same cylinders that come out of India,  but these are a curiosity to me. It seems like a bad deal, but almost worth buying just to see how bad they actually are.

https://www.ebay.com/itm/64mm-RD-350CC-LH-RH-Cylinders-Pistons-Complete-Kit-For-YAMAHA-1973-1974-1975/184408765114?hash=item2aef9e72ba:g:~g8AAOSw5XRfO~2H

[pdxjim]

What could possibly go wrong?

[m in sc]

resale cyls. 

i almost want to get them and just try them on a spare bottom end.

[Striker1423]

resale cyls. 

i almost want to get them and just try them on a spare bottom end.

Kinda what i was thinking. lol

[teazer]

The mismatch between liners and casting is a bit rough, but the die casting is streets ahead of anything that came out of the Yamaha factory back in the day.

Just port them and go.

[Czakky]

I so want an experimental RD to play with porting. Stuff like this would be perfect...

[rodneya]

I so want an experimental RD to play with porting. Stuff like this would be perfect...

Not always so unfortunately. The liners on some of the cheap cylinders twist, are often not very well bored or finished and the piston sets are the cheapest junk they can find. The liners are often porous, so that even if you try bore them out to get them round you get a bunch of small holes in the liner. The cylinders on ebay for little KTMs, PW 50's banshees and many other bikes all have similar problems. Some guys get them to work, others cant even get the piston to fit in the bore.
If you want to try run them I would suggest getting  a few spares so you could pick and choose the best of the bunch, and buy decent pistons.

[Czakky]

Just a pipe dream anyway...

[preben54]

Hi guys ,  I got a set from india from ebay , looked ok ,ring gab ok,piston clearance ok, the only I did was stone all port to cyl, they were to sharp and maybee hurt rings,I WAS SKEPTICAL BUT IT WAS A YEAR AGO , it is running well ,he has maybe 1500 miles on it, we might have been lucky,Preben

[quocle603]

Everyone chip in and buy me the cylinder kit and I will test it on my spare engine lol.