Go Back   The Ford Barn > General Discussion > Model A (1928-31)

Sponsored Links (Register now to hide all advertisements)

Reply
 
Thread Tools Display Modes
Old 11-10-2019, 06:34 AM   #1
diomed
Senior Member
 
diomed's Avatar
 
Join Date: May 2012
Location: Las Vegas
Posts: 131
Default GAV and alcohol

I was listening to a non-technical podcast and they mentioned the GAV on the Model A was designed to allow the engine to run on gasoline or alcohol. The story was that alcohol was common on farms at the time.

When I first rebuilt a Zenith I had the GAV a full turn+ open and it was really pumping out black smoke and barely running. I thought it was odd to have that level of adjustment available from the drivers seat.

Anybody ever heard of this? I can safely say the podcast hosts donít know a thing about cars so clearly they were just parroting back what they heard. Who knows, maybe this is common knowledge to everyone but me!

Thanks
__________________
kris
diomed is offline   Reply With Quote
Old 11-10-2019, 11:05 AM   #2
captndan
Senior Member
 
captndan's Avatar
 
Join Date: Nov 2015
Location: Tennessee
Posts: 694
Default Re: GAV and alcohol

BS and alcohol was not common on farms except for the occasional moon shine.
captndan is offline   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 11-10-2019, 11:17 AM   #3
Bill Pursel
Member
 
Bill Pursel's Avatar
 
Join Date: Nov 2017
Location: Terre Haute, Indiana
Posts: 79
Default Re: GAV and alcohol

alcohol was common on a farm it was used for my things and in radiators for freeze protection
Bill Pursel is offline   Reply With Quote
Old 11-10-2019, 11:28 AM   #4
duke36
Senior Member
 
Join Date: Jun 2015
Posts: 1,076
Default Re: GAV and alcohol

I can relate a short story about an A I had back in the 1960's. A friend who was a master welder during WW2. etc. brazed a fitting on the '30 gas tank firewall while in the car. We drained the fuel, flushed and filled with water , and he went at it while I was standing around the building corner! Afterwards, the tank was drained and filled with a quart or 2 of 90% alcohol. The A ran very well just long enough to clear the carb., etc.

Last edited by duke36; 11-10-2019 at 11:34 AM.
duke36 is offline   Reply With Quote
Old 11-10-2019, 11:32 AM   #5
Kurt in NJ
Senior Member
 
Kurt in NJ's Avatar
 
Join Date: May 2010
Location: on the Littlefield
Posts: 4,869
Default Re: GAV and alcohol

I don't know about pure alcohol, but I did do testing of the difference between regular gas and 10%, to get the same mixture as I got with closed gav on regular gas it took 1/4 turn till 50, then 3/4 turn above 50
Kurt in NJ is offline   Reply With Quote
Old 11-10-2019, 11:33 AM   #6
Dick Steinkamp
Senior Member
 
Dick Steinkamp's Avatar
 
Join Date: Apr 2016
Location: Bellingham, WA
Posts: 1,162
Default Re: GAV and alcohol

__________________
All steel from pedal to wheel
Dick Steinkamp is offline   Reply With Quote
Old 11-10-2019, 11:40 AM   #7
The Master Cylinder
Senior Member
 
The Master Cylinder's Avatar
 
Join Date: Aug 2012
Location: SoCal
Posts: 296
Default Re: GAV and alcohol

Quote:
Originally Posted by Dick Steinkamp View Post
Really not a new thing is it?
__________________
The Master Cylinder

Enjoying life at the beach in SoCal...
The Master Cylinder is offline   Reply With Quote
Old 11-10-2019, 03:01 PM   #8
mike657894
Senior Member
 
mike657894's Avatar
 
Join Date: Oct 2015
Location: Bay City Michigan
Posts: 996
Default Re: GAV and alcohol

That sign in the back looks like the corn lobby then the corn lobby now. Take our inferior product that will cause you problems because we have billions to lobby with.
mike657894 is offline   Reply With Quote
Old 11-10-2019, 04:30 PM   #9
eagle
Senior Member
 
eagle's Avatar
 
Join Date: Aug 2011
Location: Eagle Bend, MN
Posts: 1,506
Default Re: GAV and alcohol

Yeah, that corn lobby is FORCED on the farmer. Doesn't matter if they want to support it or not, they are forced to contribute to it.
__________________
"There are some that can destroy an anvil with a teaspoon and shouldn't be allowed to touch anything resembling a tool."
eagle is offline   Reply With Quote
Old 11-10-2019, 06:03 PM   #10
diomed
Senior Member
 
diomed's Avatar
 
Join Date: May 2012
Location: Las Vegas
Posts: 131
Default Re: GAV and alcohol

Thanks for the replies. Seems like it is possible to run a fairly high mix of alcohol just by adjusting the GAV.

I forgot to mention, the podcast was talking about how unsafe leaded gasoline was and that it was developed to prevent engine knock. They were making the point that alcohol can prevent knock and the Model A was capable of running on alcohol. I feel like I need to add the caveat that I'm simplifying the topic for brevity. I know there is a lot to fuel science.

Thanks again!
__________________
kris
diomed is offline   Reply With Quote
Old 11-11-2019, 03:56 PM   #11
Fullraceflathead
Senior Member
 
Fullraceflathead's Avatar
 
Join Date: May 2012
Location: Riverside, Ca
Posts: 920
Default Re: GAV and alcohol

The biggest problem with Alcohol is its corrosive and any aluminum parts especially.
__________________
"If I asked people what they wanted they would have said faster horses."
-Henry Ford

"Primitive technology is not a design flaw"


1928 Ford Model A Roadster Pickup
1930 Gordon Smith Air Compressor
1941 Willy's Pickup
1960 Thunderbird-For Sale
1964 Buick Riviera 2x4 425
1965 Pontiac GTO, 455 Super Duty
2004 Dodge Ram SRT-10, V-10 Viper
1977 Charger Jet Boat,460 Ford,Jacuzzi Jet
Front Engine Nostalgia Dragster,Supercharged 296 "Fullrace Flathead" Ford
Engine Build up on DVD ask
Fullraceflathead is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Sponsored Links (Register now to hide all advertisements)


All times are GMT -5. The time now is 11:38 AM.