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Harv
Joined: 01 Jul 2010
Posts: 172
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 Posted: Mon Oct 17, 2011 3:00 am Post subject: Unleaded 95 octane pump gas and the Housai |
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Good morning
Has anyone on here got any longer term expericence of running regular automotive unleaded fuel in the CJ-6a?
Any problems with rubber hoses or seals perishing?
I'm just wondering what the praticalities of using it are and if it would be wise (if attmepted) to mix it up say 3 fill of unleaded then one fill-up with 100LL OR 3/4 full with unleaded then top off with 100LL.
Rgs
Harv
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brian(at)lloyd.com
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| Posted: Mon Oct 17, 2011 7:56 am Post subject: Unleaded 95 octane pump gas and the Housai |
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On Mon, Oct 17, 2011 at 4:00 AM, Harv <martin.harvey(at)kbr.com (martin.harvey(at)kbr.com)> wrote:
| Quote: | --> Yak-List message posted by: "Harv" <martin.harvey(at)kbr.com (martin.harvey(at)kbr.com)>
Good morning
Has anyone on here got any longer term expericence of running regular automotive unleaded fuel in the CJ-6a?
Any problems with rubber hoses or seals perishing?
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No. I ran mogas almost exclusively in my Housai-equipped CJ6A for nearly 700 hours. I used 87 octane (regular) pump gas. I never had a single fuel-related problem with the airplane. In fact, I never really had any problems other than normal wear items and boneheaded things I did myself. 
| Quote: |
I'm just wondering what the praticalities of using it are and if it would be wise (if attmepted) to mix it up say 3 fill of unleaded then one fill-up with 100LL OR 3/4 full with unleaded then top off with 100LL.
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The Huosai engine is spec'd to run on unleaded avgas that was (I believe) 76 octane. As I recall, that was at one time a common grade of fuel used in low-compression engines before the widespread availability of tetraethyl lead to boost the antiknock index (octane rating). I suspect it was what the Chinese commonly ran in their tractors a few years back.
The only problem with using mogas today is whether or not it has been compounded with ethanol as an oxygenate. Here in CA it is no longer possible to get mogas from the pump that has not been blended with ethanol. They used to use MTBE as an oxygenate, which posed no problems for the fuel system components, but now MTBE is no longer allowed to be sold in CA. I would not use fuel with alcohol in it in my aircraft.
--
Brian Lloyd, WB6RQN/J79BPL
3191 Western Dr.
Cameron Park, CA 95682
brian(at)lloyd.com (brian(at)lloyd.com)
+1.767.617.1365 (Dominica)
+1.916.877.5067 (USA)
[quote][b]
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