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tailfisher17t
MMT Pro Member
Joined: Wed Dec 29, 2010 6:47 pm
Posts: 328
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 Av Gas mix Do you guys run AV gas in your mud motors?
I ran into a few guys over the weekend that run a 50/50 mix of Av gas and 93 in there Go-Devils. Just wondering if its safe for all mud motors?....
Thanks Guys!!
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Team Total ASalt
Mossy Oak Pro Staff
1854Gator Traxs w/HD pushed by a MB 5000.
Ams wrote:
If assholes could fly this place would be an airport
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| Wed Oct 19, 2011 1:18 pm |
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MaXXis85
MMT Elite Member
Joined: Wed Jan 14, 2009 7:23 am
Posts: 6233
Location: Tarkington, TX
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Re: Av Gas mix Aviation fuel has a higher octane to resisit predetonation, and it also has lead in the fuel. It will leave deposits on your valves. Lead is softer than the the valve so I really dont see it being an issue.
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Bayou Surface Drive
337-351-0362
Tarkington, TX 77327
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| Wed Oct 19, 2011 1:28 pm |
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msm8281
MMT Elite Member
Joined: Fri Oct 09, 2009 1:50 pm
Posts: 9673
Location: New Iberia, La.
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Re: Av Gas mix Just remember your motor was not made to fly. It was made to cut grass. If you feel you need the higher octane use 93, but the AV gas will be just a waste of money. IMHO
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| Wed Oct 19, 2011 1:56 pm |
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Tenpoint
MMT 1000 Club
Joined: Thu Aug 27, 2009 5:22 pm
Posts: 2029
Location: Patterson LA
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Re: Av Gas mix Av gas will be a waste of money but it will not hurt ya motor. I ran quite a bit of it through mine when I sold my airboat. I didnt find any performance difference but it sure smelled good. AV gas (leaded) is supposed to run cooler than unleaded. so I heard.
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19x48 Rink/Aucoin Bateau w/35 GTR
20x60 Home-made skiff w/200 Merc
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| Wed Oct 19, 2011 6:19 pm |
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russellm454
MMT Pro Member
Joined: Fri Nov 05, 2010 11:23 pm
Posts: 216
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Re: Av Gas mix There is no need to run any mixture of Aviation fuel. 93 octane should be good for a engine with shaved heads and higher compression. 87 works just fine in the stockers.
I'd be more concerned with the ethanol that is being mixed with fuels today. It is prone to absorb moisture out of the air so if it sets up very long it can cause corosion and damage to your fuel system. Always mix some marine stabil or other fuel stabalization product if you are running fuel with methanol mixed in.
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| Wed Oct 19, 2011 10:22 pm |
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drake1
MMT Addict
Joined: Wed Jan 14, 2009 6:57 am
Posts: 659
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Re: Av Gas mix Advantage of av-gas is 2 year shelf life, no ethanol, motor runs cooler and the lead lubricates the valves.
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| Thu Oct 20, 2011 5:38 am |
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petrel
MMT F.E.
Joined: Mon Jan 11, 2010 9:51 am
Posts: 770
Location: NVA
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Re: Av Gas mix
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Phowler 2066 w/ E5 37 ProDrive w/ Illowa Marine Heads
MoMarsh Fatboy/2 Honda
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| Thu Oct 20, 2011 7:47 am |
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russellm454
MMT Pro Member
Joined: Fri Nov 05, 2010 11:23 pm
Posts: 216
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Re: Av Gas mix
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| Thu Oct 20, 2011 3:24 pm |
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tailfisher17t
MMT Pro Member
Joined: Wed Dec 29, 2010 6:47 pm
Posts: 328
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Re: Av Gas mix So do you think it would be totally Safe to run 1 gal of AV to 5 Gallons of 93? I know so guys around here run 50/50 and have done it for years. I run mostly salt and its in the elements 24/7.........
I run a Kohler right now but in a week or so it will be a vanguard. My buddy runs straight AV in his Kohler 25 .......
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Team Total ASalt
Mossy Oak Pro Staff
1854Gator Traxs w/HD pushed by a MB 5000.
Ams wrote:
If assholes could fly this place would be an airport
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| Fri Oct 21, 2011 7:10 am |
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schmitt
MMT 1000 Club
Joined: Fri Jun 25, 2010 3:33 pm
Posts: 1177
Location: WI
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Re: Av Gas mix
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1848 DeadFowl pushed by a Stage 4 Delta powered MB HDR (JBP dusting)
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| Fri Oct 21, 2011 8:55 am |
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ironman_gq
MMT Pro Member
Joined: Thu Oct 06, 2011 10:33 am
Posts: 100
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Re: Av Gas mix I do know that av in small 2-strokes doesnt always work out too well, It burns slower. Probably not going to be a problem in these motors but it is something to think about, you might actually end up losing power if you dont advance the ignition some to compensate for the slower burn.
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| Fri Oct 21, 2011 9:11 am |
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russellm454
MMT Pro Member
Joined: Fri Nov 05, 2010 11:23 pm
Posts: 216
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Re: Av Gas mix I guess my question would be why spend the extra money? These engines are built with hardened valves seats so you don't need the led and unless you are running high compression you don't need it. Heck run 93 octane and send me the difference if it makes you feel better 
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| Fri Oct 21, 2011 9:33 pm |
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