Hi
I am looking to power a gp revolver with a hot 60-90 sized 2stroke. I have been offered an unused YS .60 sr but cannot find any spes on it. do they make good power and revs with a pipe ? what do they weigh ? any help on this engine would be really appreciated as I cannot afford a JET 60 or 90.
thanks
John
New Zealand

John,


You don't need any specs... They are just lies told by engine manufacturers, to persuade people to prefer their engine...

A YS .60 was designed for 'pre-long-stroke', high RPM pattern, using a tuned-pipe and spinning an 11x7 - 11x7.75 prop, at 14,500 - 15,200 RPM.


It is close in that respect to the performance a Jett .60 engine is capable of making. It is close also to the Rossi .60, The Enya XF(#), the Webra #1024/1030 and the OS.61FSR engines, all with a tune-pipe. Near the end of that era (before lower noise 'Long Stroke' engines came in play), it was the engine to have...

The fuel system components (plungers, caps, diaphragms...) in this engine are nearly 30 years old.


I hope they work, or that you have a good source for these parts, that tend to be problematic.

...But after replacing all these parts, the engine magically becomes great again...

thanks, sounds real good for what I want-spares are a worry though ! does anyone know were parts can be obtained from ?

I think performance specialties has parts for this.
I aquired two of these new in the box, and had to replace the exact parts Dar noted.
Engines now run like a top and perform well.

www.yspartsandservice.com.

Web site is funky, call them.

Tony