SZ91H-PS head shim question
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SZ91H-PS head shim question
I am wondering about the extra head shims that came with my SZ91H-PS engine. I run Cool Power 30% in my heli's. Do I need to add any of these extra head shims to the engine or is the stock shim sufficient? I only want to have to install the engine in the heli once and not be messing with the head shims.
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RE: SZ91H-PS head shim question
I should add that my elevation is 210' Above Sea Level and the average summer temp is 78 degrees with relatively low humidity.