Smed 29 Z
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Next, Ben installed the two piston rings. The bot-tom ring is designed to yield 24/1000 of an inch of clearance to the cylinder wall, while the top piston ring yields 21/1000 of an inch. Notice Ben used a piston ring tool to install the piston rings. Doing it by hand will distort the piston rings and rob the engine of up to 10 horsepower. View Related Article
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