compression ratio

by tom oatman in 912 / 914 Technical Questions 6 years ago

trying to determine the compression ratio of my 912uls.
i have found
10.5:1
10.8:1
11.1:1

can anyone confirm ?
100hp 912uls, purchased new around 2011.

thanks
Tom O.

Re: compression ratio

by RotaxOwner Admin » 6 years ago

RotaxOwner Admin

59 1.58k 13.9k

11.1:1 ( see HMM (Heavy Maintenance Manual) 71-00-00 pg12 )

Thank you said by: Wayne Fowler

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Re: compression ratio

by tom oatman » 6 years ago

tom oatman

5 28 0

thanks for responding.
there is a lot of rotax misinformation out there that lists the CR as 10.5:1

now i know.

thats one of the reasons it is so efficient.

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