03-28-2020, 03:01 PM | #26 |
But Found Her 25yrs Later!
Join Date: Oct 2010
Location: Oregon City, Oregon
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Re: Plumbing for Ethanol
Here is an interesting document
https://www.google.com/url?sa=t&sour...=1585421961491
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I lost my 65 - Found it 25 years later: http://67-72chevytrucks.com/vboard/s...d.php?t=426650 66 C20 Service Truck: http://67-72chevytrucks.com/vboard/s...d.php?t=428035 |
05-29-2021, 12:19 PM | #27 |
But Found Her 25yrs Later!
Join Date: Oct 2010
Location: Oregon City, Oregon
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Re: Plumbing for Ethanol
This thread has been focusing on the materials to use, but I have recently learned some more stuff about how to plumb for fuel with ethanol in it.
Many of you probably already know much of this, but it was new to me, and so I like keeping topics consolidated rather than having information scattered over several threads. . I've learned that even 10% ethanol fuel is more sensitive to heat than the fuel from the good ol days. . I'm seeing people running return lines for even carburetors. The goal is to try and keep the fuel from getting too hot - as it may be more likely to do in a 'dead-head' system. . When I plumbed for my Edelbrock, the recommendation was to get a fuel pressure regulator and keep the fuel pressure below 6psi. I'm reading now that the regulator should be a bypass regulator that routes the excess fuel pushed from the pump back to the tank. Infact, some are saying to use a 12psi or higher fuel pump to keep the fuel moving faster through the system. Plumb the bypass regulator as close to the carb as possible. . More to come...
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06-01-2021, 09:58 PM | #28 |
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Re: Plumbing for Ethanol
Thanks for the update.
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06-01-2021, 11:33 PM | #29 |
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Re: Plumbing for Ethanol
Interesting in lostmy65's post link https://www.google.com/url?sa=t&sour...=1585421961491 that PTFE and nylon are not listed.
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06-02-2021, 10:32 AM | #30 |
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Join Date: Oct 2010
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Re: Plumbing for Ethanol
I can't get the link to open anymore.
But I think I remember it talked about how ethanol corroded or deteriorated certain materials. Maybe nylon and PTFE aren't mentioned because they don't corrode or deteriorate with ethanol. But it is odd they weren't included.
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06-05-2021, 11:03 AM | #31 | |
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Re: Plumbing for Ethanol
Quote:
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06-05-2021, 11:28 AM | #32 |
But Found Her 25yrs Later!
Join Date: Oct 2010
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Re: Plumbing for Ethanol
I saw mentions of that in my search.
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I lost my 65 - Found it 25 years later: http://67-72chevytrucks.com/vboard/s...d.php?t=426650 66 C20 Service Truck: http://67-72chevytrucks.com/vboard/s...d.php?t=428035 |
06-12-2021, 01:28 AM | #33 | |
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Re: Plumbing for Ethanol
Quote:
I don't know if it needed it but it was easy enough to install and only cost a few bucks. That truck burns 91 octane 10% ethanol, it has a Q-Jet so it doesn't need a regulator.
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08-08-2021, 12:19 PM | #34 |
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Location: Calgary Alberta
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Re: Plumbing for Ethanol
I was going to go for a walk this morning and then I smell gas and see a stain on the pavement. The rubber line to the fuel pump decided to not hold fuel anymore. With the tank between the frame rails and pointing the truck uphill the dripping stopped.
It must have gotten eaten up by the ethanol and the line was not that old. Thanks for the link on what product to buy. |
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