Home -> Vans Air Force topic: Auto Fuel

Author: "mbirmham50" <mbirmham50@...> Time: Mon Aug 15, 2005 3:01 am PDT Link

Does anyone use auto fuel in an O-360 A1A engine with a constant speed
prop? Problems?

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Author: Mike Thompson <grobdriver@...> Time: Mon Aug 15, 2005 5:02 am PDT Link

An O-360 with standard compression heads should run mogas quite well.
Mine has.

- Mike

mbirmham50 <mbirmham50@yahoo.com> wrote:
Does anyone use auto fuel in an O-360 A1A engine with a constant speed
prop? Problems?

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Michael E. Thompson (Grobdriver@yahoo.com)
Austin, TX, USA
RV-6 N140RV, FLYING!
Ex-AX1 Sub Hunter, P-3 (B/B-TACMOD/C) Orion Aircrew,
PP-G,ASEL, Motorglider Driver and Unlimited Air Race Nut!

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Author: Barry AV8R <aa5_av8r@...> Time: Tue Aug 16, 2005 3:08 pm PDT Link

RV-6 With O-360 & CS Prop ... I run Mo-Gas (93 Octane) all the time. RUNS GREAT.
Also I fly an RV-6A w/O-360 and fixed pitch ... Same statement ... Mo-Gas RUNS GREAT (93 Octane).
The standard compression for the O-360 is 8.5 : 1 which requires the high octane gas.

Barry

Mike Thompson <grobdriver@yahoo.com> wrote:
An O-360 with standard compression heads should run mogas quite well.
Mine has.

- Mike

mbirmham50 <mbirmham50@yahoo.com> wrote:
Does anyone use auto fuel in an O-360 A1A engine with a constant speed
prop? Problems?

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Michael E. Thompson (Grobdriver@yahoo.com)
Austin, TX, USA
RV-6 N140RV, FLYING!
Ex-AX1 Sub Hunter, P-3 (B/B-TACMOD/C) Orion Aircrew,
PP-G,ASEL, Motorglider Driver and Unlimited Air Race Nut!

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Author: "Daniel Storer" <dstorer@...> Time: Tue Aug 16, 2005 4:36 pm PDT Link

Barry,

How many hours/year on the engines with Mo-Gas? Just wonder what the long
term effects are on engine life.

Regards,

Dan S.
OKC

-------Original Message-------

From: Barry AV8R
Date: 08/16/05 17:08:45
To: vansairforce@yahoogroups.com
Subject: Re: [VAF Mailing List] Auto Fuel

RV-6 With O-360 & CS Prop ... I run Mo-Gas (93 Octane) all the time. RUNS
GREAT.
Also I fly an RV-6A w/O-360 and fixed pitch ... Same statement ... Mo-Gas
RUNS GREAT (93 Octane).
The standard compression for the O-360 is 8.5 : 1 which requires the high
octane gas.

Barry

Mike Thompson <grobdriver@yahoo.com> wrote:
An O-360 with standard compression heads should run mogas quite well.
Mine has.

- Mike

mbirmham50 <mbirmham50@yahoo.com> wrote:
Does anyone use auto fuel in an O-360 A1A engine with a constant speed
prop? Problems?

Online help on this group at:
http://help.yahoo.com/help/groups/

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---------------------------------

Michael E. Thompson (Grobdriver@yahoo.com)
Austin, TX, USA
RV-6 N140RV, FLYING!
Ex-AX1 Sub Hunter, P-3 (B/B-TACMOD/C) Orion Aircrew,
PP-G,ASEL, Motorglider Driver and Unlimited Air Race Nut!

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Author: David Domeier <davidd010@...> Time: Tue Aug 16, 2005 10:13 pm PDT Link

Greetings fellow aviators,

The Subaru H6 loves 93 octane mogas (not that you Lycoming guys are
interested :). It also runs on 100LL but it's a good idea to add a lead
scavenger to keep the O2 sensors clean. Sometimes on a cross country mogas
is not available.

It is a very good idea to use a vapor pressure tester when running mogas.
100LL always tests around 65 kPa's, but some mogas will come in at less than
40. The lowest I have seen this summer is 49 at 85F. Some of us carry an
altitude conversion chart and without looking at it, I would guess 49 is
good up to at least 15000'.

Actually, the price of all fuel has gone ballistic. I don't fly as much as
I did a year ago.

dd
RV-7A N707DD
Subaru
(little over 200 hours)

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Author: Barry AV8R <aa5_av8r@...> Time: Thu Sep 8, 2005 4:40 am PDT Link

Daniel:

Sorry it took me so long to get back to you.

With the three planes that I fly using MoGas I would break it down this way:
RV-6, O-360 w/cs/prop ... 90% of the time on MoGas ... 130 Hrs per year.
RV-6A, O-360 w/fixed pitch ... 50% of the time on MoGas (this plane does LOTS of cross country) ... 150 Hrs per year.
AA-5, O-320 HC w/fixed pitch ... 95% of the time on MoGas ... 110 Hrs per year.

The two MAJOR problems I have seen with these planes on AvGas are: COST and Lead Fouling.
Planes that fly 100% of the time on AvGas will experance Valve Coking problems.

Barry

Daniel Storer <dstorer@okwifi.com> wrote:
Barry,

How many hours/year on the engines with Mo-Gas? Just wonder what the long
term effects are on engine life.

Regards,

Dan S.
OKC

-------Original Message-------

From: Barry AV8R
Date: 08/16/05 17:08:45
To: vansairforce@yahoogroups.com
Subject: Re: [VAF Mailing List] Auto Fuel

RV-6 With O-360 & CS Prop ... I run Mo-Gas (93 Octane) all the time. RUNS
GREAT.
Also I fly an RV-6A w/O-360 and fixed pitch ... Same statement ... Mo-Gas
RUNS GREAT (93 Octane).
The standard compression for the O-360 is 8.5 : 1 which requires the high
octane gas.

Barry

Mike Thompson <grobdriver@yahoo.com> wrote:
An O-360 with standard compression heads should run mogas quite well.
Mine has.

- Mike

mbirmham50 <mbirmham50@yahoo.com> wrote:
Does anyone use auto fuel in an O-360 A1A engine with a constant speed
prop? Problems?

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