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Discussion in 'Lawn Mowing' started by joed, Aug 7, 2007.
What's the difference between Echo's Power Boost Tornado engine and Power Boost Vortex engines?
I have both. A lot more torque in the Tornado.
vortex = single ring piston
Tornado = double ring piston
I don't think it is a quality issue, i believe it has to do with the need of 2 rings on larger displacement engines and more compression. Basically you don't need 2 rings on those srm-210 and other smaller engines.