Octane
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Depends if the engine is modified to specifically run that octane rating. My best guess is that if it can run sub 100 octane then it's ok to run 93
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You can run 93 but no less.
Oil content in gas brings octane level down.. knowing the price of those engines I wouldn't be stingey at the pump. Use what they recommend
I run 91 on 57-65 with no issues....all my rc's run on 91
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just buy c9 or c12
or cam 2
What do they reccomend? And then follow what they say. Why are you second guessing the MFG.?
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Rcmax recommends 95 octane.
Did you miss my point Z ?
@Seandonato73 cmon one more time 
For me personally I doubt I'd notice a difference between 91 and 95 and for the the drama of ethanol I can't see the benefit.....not like there is a spiral diaphragm wj71 crab now is there.......
and I can't be fuked to drain the fuel out my carbs after ever run.....but hey thats jus me ....do as you please
and I can't be fuked to drain the fuel out my carbs after ever run.....but hey thats jus me ....do as you please
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Ethonal increases octane rating.
Not getting into another octane debate or ethonal debate. I've posted more then enough about both already.
Not getting into another octane debate or ethonal debate. I've posted more then enough about both already.
Because they need to factor in a margin of safety, they have no idea where the engine is going to end up, or how the octane is rated, so like all mfg they need to cover their arse. Pretty simple concept really.