Anonymous-0
Well-known Member
I have a '74 C65 Chevy Tandem with a 366 gas engine. Will there be a problem using 10 % ethanol? Are there any particular changes that need to be made?
- Thread starter Anonymous-0
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Anonymous-0
Well-known Member
That was a typical issue with METHANOL, not ethanol. MN has had E10 mandated for years and it's causing no problem.
jlmtractor
Member
all gas has some type of ethanol in it. but large amounts of ethanol is what can harm the engine. the 10 percent of ethanol in all gas is there in to small of an amount to hurt anything well that is atleast what i have been told.
jlmtractor
Member
that is what i mean the fuel system... that is part of the engine.
jlmtractor
Member
the reason it can hurt the fuel system from what i understand is that ethanol has a lot of oxygen in it compared to gas and older engines wont run right. and in the newer vehicles like say my 2002 2500 chevy will show a sensor is out becuz the oxygen sensor is being bypassed so lots of ethanol in an older vehicle could hurt the fuel system
onefarmer
Well-known Member
- Location
- 6735 S Lowell Rd, St Johns, Mi 48879
If the truck has had gas put in it at any time over the last 20 years, It for 95% sure has run 10% at some time.
Will ethanol physically hurt a gas engine...NO.
Will it run right... Maybe depends on how much ethanol and the tune of the engine. Normally up to 20% is ok
Will ethanol physically hurt a gas engine...NO.
Will it run right... Maybe depends on how much ethanol and the tune of the engine. Normally up to 20% is ok
Ethanol is the same thing as moonshine.Ethanol will burn in anything gas will burn in.You might have to put a couple size bigger jets in the Holley carb,but thats not hard to do.If it has old rubber lines on it somewhere probably need to change to newer kind that ethanol wont hurt.Might have to set the timing different.Might want to increase the compression rati
ld guys that ran moonshine would know what to change,but it might not be all that much.The more pure the ethanol the better.Ford made his cars to run on it to start with.There was even a TV show called Thunder Road and thats what it was about,cars that ran on moonshine.It was back in the 50s I think.
ld guys that ran moonshine would know what to change,but it might not be all that much.The more pure the ethanol the better.Ford made his cars to run on it to start with.There was even a TV show called Thunder Road and thats what it was about,cars that ran on moonshine.It was back in the 50s I think.buickanddeere
Well-known Member
Not certain why you may intend by saying the O2 sensor is bypassed?
The sensor is still in the manifold and still sending a mv signal to the computer.
If the mixture is lean the voltage drops and if rich the voltage rises.
The computer will increase injector pulse width to spray more fuel when the O2 sensor is reading lean.
That is, if unusually lean for example due to >10% ethanol. Fuel flow will increase up to either the limit of the computer software, injector size, fuel pump/line/filter capacity.
The sensor is still in the manifold and still sending a mv signal to the computer.
If the mixture is lean the voltage drops and if rich the voltage rises.
The computer will increase injector pulse width to spray more fuel when the O2 sensor is reading lean.
That is, if unusually lean for example due to >10% ethanol. Fuel flow will increase up to either the limit of the computer software, injector size, fuel pump/line/filter capacity.
Anonymous-0
Well-known Member
You may want to read the owner's manual. That 2002 can use up to 10% per fuel requirements in the book, and that is what the original question was about. The O2 sensor can't be bypassed it is in the exhaust manifold and on some vehicles there are 2 or more in various parts of the exhaust. Among the reasons mileage is lower on Ethanol fuel is because the sensor shows MORE oxygen in the exhaust (lean) and increases the injector open time to supply more fuel.
We have had E10 mandated here in MN for years. I have a 75 C65 with a 366. The only trouble has been with accelerator pump diaphragms and transfer tube orings in the Holley carb. Fixed it last fall with alcohol carb parts from Jegs high performance. Hope they will last more than 2 years like the NAPA parts I was using.
Anonymous-0
Well-known Member
I hope those parts work too, BUT those transfer tubes were always prone to leakage, cousin's 396 Chevelle went up in flames after a long hard drive.
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