Today's Message Index:
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1. 06:18 AM - Auto Fuel (BobbyPaulk@comcast.net)
2. 06:55 AM - Re: Auto fuel (Gary Aman)
Message 1
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Sorry I had the Ron and AKI ratings reversed.
It's an age thing.
Still the engine runs a lot better on 100LL Av gas.
bobby
Message 2
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I agree completely with Bobby,mostly because I do not trust the oil
companies to maintain quality control with such a narrow margin to play
with.Nothing but 100LL in my 2200A S/N1295 1030 hrs G.Aman( same age as
Bobby)
> On Jul 15, 2017, at 7:06 AM, BobbyPaulk@comcast.net wrote:
>
> American Auto fuel is NOT high enough Octane for the Jabiru.
> I was using 92 Oct. Non Ethanol Marine fuel with an Octane booster.
> The booster would break down unless it was used quickly.
> The engine requires 95 Oct RON which is about 3 points higher than 95
Oct.MON ( American Rating ).
> Using Auto fuel in a high compression engine will cause detonation.
> Also most Bing carburetors lean the mixture between 2500 and 2800 RPM.
> Watch your EGT and CHT. I am running a 260 main jet and 290 plus .002
Needle jet and I still can not operate in those RPM ranges.
>
>
> Bobby ( age 79 )
> Zodiac 601 XL "B"
> Jabiru 3300 S/N 1141
> Sensenich 64" x 51" Prop
> Bing Carb 260 Main & 290 Plus .002 Needle Jet
> Status - Flying 280 hrs.
>
> Do Not Archive
>
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