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02-13-2021, 11:21 AM | #1 |
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E85 fuel with a holley 94
Has anyone try to run e85 fuel on a holley 94 carb trying to find out if could happen
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02-13-2021, 12:20 PM | #2 |
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Re: E85 fuel with a holley 94
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Last edited by JSeery; 02-13-2021 at 05:20 PM. |
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02-13-2021, 12:20 PM | #3 |
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Re: E85 fuel with a holley 94
The E85 will probably attack the accel pump piston (if rubber type) and the power valve diaphragm. Only designed for 10% ethanol.
A Stromberg 97 may be a better option. No rubber type parts. Just my opinion. Sal |
02-13-2021, 12:31 PM | #4 |
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Re: E85 fuel with a holley 94
Very good and important point Sal!!! I was just thinking about the octane.
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02-13-2021, 12:59 PM | #5 |
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Re: E85 fuel with a holley 94
It's on a blower motor with no power valves at all compression is 9.4 and boost is around 8 to 10 with 4 of them if I'm not wrong it will be around 13 or so with boost
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02-13-2021, 01:16 PM | #6 |
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Re: E85 fuel with a holley 94
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02-13-2021, 01:20 PM | #7 |
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Re: E85 fuel with a holley 94
I was told when I was going to run gas to run 51 in all of them yes I think I need bigger ones
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02-13-2021, 01:36 PM | #8 |
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Re: E85 fuel with a holley 94
The midget guys were running almost 100% alky, and if I understand the naming conventions, "E85" is 85% alcohol. Given the circumstances, I think the proper term would be "a lot bigger".
Might be a good idea to see if there are any old-timers that ran carbs and alky back in the day. There are probably a few hiding in the weeds right here. My knowledge comes only from "bench racing", but some real serious bench racing (alcohol was involved). |
02-13-2021, 01:42 PM | #9 |
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Re: E85 fuel with a holley 94
Don't do much good to run bigger jets if the the rest of the carb is not drilled out
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02-13-2021, 02:57 PM | #10 |
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Re: E85 fuel with a holley 94
Hmmm,
I build a few 94's each year and all are quite happy with e 85 or e 87. I'm probably wrong but I thought the number was the octane not % of alky. It seems to me (4) 94's will pass all the air a Flathead would ever need, even with a blower. Invest in an A/F meter, run with mufflers so you can hear detonation and keep us posted. Charlie ny |
02-13-2021, 03:13 PM | #11 |
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Re: E85 fuel with a holley 94
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02-13-2021, 03:44 PM | #12 |
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Re: E85 fuel with a holley 94
There is some disagreement about the exact number among the experts, but E85 has an octane rating over 100. Some late model performance freaks build their engines to use it on purpose.
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02-13-2021, 04:47 PM | #13 |
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Re: E85 fuel with a holley 94
Art,
Thanks for the info on e 85........our reg here (New York State) is 87 octane unleaded which is I guess way different than e 85. What is the significance of the e preceding the 85...never too old to learn. Thanks, Charlie |
02-13-2021, 05:48 PM | #14 |
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Re: E85 fuel with a holley 94
I will have to do more checking on it
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02-13-2021, 07:10 PM | #15 |
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Re: E85 fuel with a holley 94
On 4bbl holley they have a driffents fuel block and bigger jets and bigger needle valve 30% bigger jets size
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02-13-2021, 07:11 PM | #16 |
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Re: E85 fuel with a holley 94
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02-13-2021, 07:13 PM | #17 |
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Re: E85 fuel with a holley 94
If you run E85, I would estimate a good starting point would be main jets about 25 to 30% larger than the #51 jets. Also use a leather accelerator pump piston. This is assuming you have the power valve blocked off.
Sal |
02-13-2021, 09:21 PM | #18 |
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Re: E85 fuel with a holley 94
So I took a minute and googled E85.....could be as high as 105. That E makes a big difference ,not to be confused with 85 or 87 oct.
Charlie ny |
02-13-2021, 11:56 PM | #19 |
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Re: E85 fuel with a holley 94
E-85 is Ethanol-85%. That's what the "E" stands for.
Terry
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02-14-2021, 03:01 PM | #20 | |
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Re: E85 fuel with a holley 94
Quote:
The "E" is for ethanol. I would bet that your 87 octane unleaded gas is E-10 (10% ethanol)......there will be a sign on the pump.....pretty much the standard blend in the U.S. east coast. The non-E fuel here is 90 octane, and costs about 20 cents more than E-10. |
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