Today's Message Index:
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1. 02:21 PM - Auto Fuel (BobbyPaulk@comcast.net)
2. 03:18 PM - Re: Auto Fuel (wb2ssj)
3. 03:23 PM - Re: Auto Fuel (FLYaDIVE)
Message 1
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Guys
I have been using Marine fuel ( automotive boosted to 92 octane ) for years and
boosting it to 93 octane.
I just read an item from Jabiru USA that says 91 octane is O.K.
Check it out.
http://www.usjabiru.com/JabiruEngines_D0PT.html
I was very careful adapting from 100 LL to the 93 octane marine fuel by putting
the 93 in one tank and taking off on the other with 100LL. Loading the engine
gradually to make sure it was not detonating. I was wondering if any one has
been using 91 Octane NON ethanol auto fuel with good results. I used 93 Octane
ethanol for a while but got concerned about how long it would stay in the tank
before breaking down or collecting water. I have had bad experiences with ethanol
in lawn equipment that is not used regularly and do not use it any more.
Bobby ( age 76 )
Zodiac 601 XL "B"
Jabiru 3300 S/N 1141
Sensenich 64" x 51" Prop
Bing Carb 260 Main & 290 Needle Jet
Status - Flying 217 hrs.
Message 2
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Message 3
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Bobby:
There is a huge amount of information on running MoGas Vs AvGas. MoGas
wins hands down.
The limiting factor for the octane rating is the compression ratio of the
engine. Cars have compression ratios in the range of 8.5:1 to 12:1. And
they all use 92 octane AND that rating is obtained by the (R1+R2)/2 method
- WHICH is not as good as using a Knock Engine. AND - Just think of it all
those cars can run on 92 octane!!! There is NO reason for you to spend the
extra money trying to obtain an increase of ONE (1) octane number
ESPECIALLY since you have NO way of proving that you are even getting that
much!
I have been using 91 octane on a 180+ HP Lycoming O-360 engine for years
without a single problem. Mater of fact... The spark plugs LQQK GREAT, no
lead fouling. Compression ratio: 9.5:1... Before Mods, I would guess
10.5:1 but I never did the math. I also have been running MoGas on an
O-320 150+ HP HC for years and can say the same thing... UNTIL New Jersey
went the way of ethanol gas... Now I switched to AvGas - NOT a DROP of
ethanol free gas is available in this lousy Damn-O-Cratic state of NJ!
Barry
On Thu, Jul 3, 2014 at 5:20 PM, <BobbyPaulk@comcast.net> wrote:
> Guys
> I have been using Marine fuel ( automotive boosted to 92 octane ) for
> years and boosting it to 93 octane.
> I just read an item from Jabiru USA that says 91 octane is O.K.
> Check it out.
>
> <http://www.usjabiru.com/JabiruEngines_D0PT.html>
> http://www.usjabiru.com/JabiruEngines_D0PT.html
>
> I was very careful adapting from 100 LL to the 93 octane marine fuel by
> putting the 93 in one tank and taking off on the other with 100LL. Loading
> the engine gradually to make sure it was not detonating. I was wondering if
> any one has been using 91 Octane NON ethanol auto fuel with good results. I
> used 93 Octane ethanol for a while but got concerned about how long it
> would stay in the tank before breaking down or collecting water. I have had
> bad experiences with ethanol in lawn equipment that is not used regularly
> and do not use it any more.
>
> Bobby ( age 76 )
> Zodiac 601 XL "B"
> Jabiru 3300 S/N 1141
> Sensenich 64" x 51" Prop
> Bing Carb 260 Main & 290 Needle Jet
> Status - Flying 217 hrs.
>
>
> *
>
>
> *
>
>
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