Superior vs Lycoming 320

[WVM]

Hi,

An owner of a Superior engine told me that his engine is around 15% more fuel efficient over the same Lycoming model. An engine mechanic told me that this is unproven, but not impossible, still probably a Lycoming engine will be as efficient as the Superior on the same airframe. He expect the difference between both to be not that big.

I think to put a XIO-320-D1A from Superior on an RV9, does anyone has information on the fuel burn?

Thank you

[N941WR]

I went with an ECi O-360 when I replaced my engine a few years back and am very pleased with the results. 50-55% power, 150-155 Kts, while burning 7.2 GPH in cruise. My empty weight is in line with O-320 powered -9 at 1068 lbs. Climb rates can go over 2,000 FPM with a FP Catto (solo and partial tanks.).

You have a lot of options.

[RV6_flyer]

Originally Posted by WVM

Hi,

An owner of a Superior engine told me that his engine is around 15% more fuel efficient over the same Lycoming model. An engine mechanic told me that this is unproven, but not impossible, still probably a Lycoming engine will be as efficient as the Superior on the same airframe. He expect the difference between both to be not that big.

I think to put a XIO-320-D1A from Superior on an RV9, does anyone has information on the fuel burn?

Thank you

Most of the parts in the Superior engine are PMA parts that could be used in a Lycoming. I do no believe that there is a difference in fuel burn if they are producing the same power.

Who ever told you there is a difference needs to "Show Me" as I am from Missouri the show me state.

[diamond]

Bill
What is your burn rate down around 115 knots?

[N941WR]

Originally Posted by diamond

Bill
What is your burn rate down around 115 knots?

No idea, I never fly with Cessnas.

[Sid Lambert]

I remember about 10 years ago Superior had a sump for an updraft carb they claimed was more efficient. It had a small divider that directed airflow to each cylinder.

Other than that I think everything else is PMA and the same as Lycoming.

[Steve Melton]

Originally Posted by N941WR

I went with an ECi O-360 when I replaced my engine a few years back and am very pleased with the results. 50-55% power, 150-155 Kts, while burning 7.2 GPH in cruise. My empty weight is in line with O-320 powered -9 at 1068 lbs. Climb rates can go over 2,000 FPM with a FP Catto (solo and partial tanks.).

my fuel burn is 7.2 GPH, 9K, 153 kts, WW200RV prop on Superior O-320 at 65% power. climb rate also greater than 2K FPM. oil cooler 90% blocked in winter oil temp = 175F, in summer with no oil cooler blockage it does not exceed 190F. a cooler engine may be a benefit if running mogas.

[N941WR]

Originally Posted by RV6_flyer

Most of the parts in the Superior engine are PMA parts that could be used in a Lycoming. I do no believe that there is a difference in fuel burn if they are producing the same power.

Who ever told you there is a difference needs to "Show Me" as I am from Missouri the show me state.

Only you can order up roller tappets, different compression pistons, cold air sump, etc. which all improve performance.

ECi has their own performance tricks for the experimental market.

Truth is, you can't go wrong with either engine and once you hang it on your experimental airplane it becomes an experimental engine.

[WVM]

Originally Posted by N941WR

No idea, I never fly with Cessnas.

Nice one...

Does anyone with a (I)O-320 Lycoming or Superior know what the fuel burn will be around 115-125 kts?

[C-FAH Q]

IO-360 200hp is economical as well.

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