Thread: Break in period
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Old 05-05-2016, 11:04 AM   #5
2LZ   2LZ is offline
 
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Join Date: Mar 2010
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Quote:
Originally Posted by bogieboy View Post
The honed crosshatch pattern in the cylinder bore acts like a file to allow the rings to wear. The rings quickly wear down the "peaks" of this roughness, regardless of how hard the engine is run.
There's a very small window of opportunity to get the rings to seal really well ... the first 20 miles !! [/SIZE] [SIZE=2]If the rings aren't forced against the walls soon enough, they'll use up the roughness before they fully seat. Once that happens there is no solution but to re hone the cylinders, install new rings and start over again.
An excellent point also! Especially in two strokes, seating the rings is critical and happens quickly. "They" (who is "they" really?) also say to decelerate from higher RPM's when slowing down and use your brakes less. This creates vacuum in the cylinder to expand the rings. This helps with seating.
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