Clinician
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pst150 11
by: fido66 - Jan 11, 2014 16:54:14 GMT -6
Post by fido66 on Jan 11, 2014 16:54:14 GMT -6
7800 KLM motor went south . What is the biggest bore kit I can use with out modifying the cases also a brand recommendation I will need piston cylinder. head and gaskets.///FIDO model 2009 pst150-11
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pst150 11
by: Alleyoop - Jan 11, 2014 19:57:41 GMT -6
Post by Alleyoop on Jan 11, 2014 19:57:41 GMT -6
Here are your choices:
Alleyoop
The 58.5mm (155cc) kit is a direct bolt-on replacement for your current GY6 cylinder body, and no alterations to the engine or crankcase are necessary. I would use this kit if I was going to replace the rings on the current motor. It would fix your blown motor and give a tad extra low end torque.
The 61mm (170cc), 62mm (175cc), and 63mm (180cc) kits will require machining of your crankcase to allow the cylinder sleeve to fit.
Alleyoop
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Clinician
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pst150 11
by: fido64 - Jan 12, 2014 12:20:47 GMT -6
Post by fido64 on Jan 12, 2014 12:20:47 GMT -6
Thank you for the info // Is much difference in the quality between brands of the 58.5 kit // I pulled the motor down today The head of the exhaust valve is stuck in the piston . So I am going to need piston and cyl. kit and a complete head assy. Thank you for the info FIDO
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..BAD TO THE BONE..