You can get valve compression tools that cover all sorts of size valves for only a few quid which will do the job Quote
Thank you Simon. Bought a Valve Spring Compression Tool Kit. Won’t know if it works until i try it, which is not the way i like to start the job. Bought a FULL Cylinder/Piston kit but it never arrived. So i bought the parts individually. Will be the 2nd time i’ve done my clinders & pistons – i honed the old cylinders but they’re not perfect.
Bought a Piston Kit, a rear Cylinder, Head & Cylinder Gaskets, Intake & Exhaust Valves, Valve Oil Seals & Valve Collets. All i need is a Front Cylinder & possibly a new set of Valve Springs.
57mm Piston & Rings Set:

Valves, Oil Seals, Collets:

Valve Spring Compression Tool Kit:


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