ROTAX 1630 ACE 230hp on 87 Octane

[Samson16]

BRP states the supercharged 1630 ROTAX engine takes 87. Well, so does my PB, but has higher performance numbers on 93. Is the Sea Doo engine also designed to adjust the timing tables for various fuel octane values?

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[cheesedogf150]

I have only used 91 in my GTR and RXT mostly because it's available on my lake and it's ethanol free which is more important.

 

[Samson16]

That’s the real answer. Run the highest octane ethanol free I can find that’s reasonably convenient. Curious if it can adjust like our trucks do.

 

[cheesedogf150]

94 is readily available around here as well, but with ethanol
I can run a science experiment on it this summer when I know I'll burn a tank full in the doo on a weekend

 

[Samson16]

94 is readily available around here as well, but with ethanol
I can run a science experiment on it this summer when I know I'll burn a tank full in the doo on a weekend

WFO for science!!

 

[Samson16]

RPM comparison will tell the story ?

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