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Old 06-30-2008 | 02:17 PM
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frenchie79
 
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From: Lancaster, WI
Default RE: Two 31cc Ryobi's which makes more power
I could not believe it but the older model made more power. Using the same carb, muffler, wood 18x8 prop. The newer (at least i think it is) turned in 6930 RPM. The older engine turned 8K even, something must be wrong. The vibration level of the older engine is real high. I don't think it is balanced the same with the heavier piston. How could it turn 1k more RPM??? Any ideas
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