The Ford Barn

duke36 · 11-23-2017, 06:24 PM

Trying to establish a range for the mixture screw and GAV opening turns @idle. Understood it may vary but curious about others' experiences.
The GAV is happy at about 3/8 to 1/2 open at idle. The idle screw is super sensitive @ about 1/4 open with a new needle and 5.5 " air filter.

1930artdeco · 11-23-2017, 07:25 PM

Sponsored Links (Register now to hide all advertisements)

When I had mine on ( need to put it back on) I could only start it with the GAV open one full turn and then close it totally down once running. The idle mix screw did not seem to make much difference but I had a different screw in the body and need to put in an original.

Mike

11-23-2017, 06:24 PM	#1
duke36 Senior Member Join Date: Jun 2015 Posts: 1,414	Marvel/ Allstate carb mixture settings Trying to establish a range for the mixture screw and GAV opening turns @idle. Understood it may vary but curious about others' experiences. The GAV is happy at about 3/8 to 1/2 open at idle. The idle screw is super sensitive @ about 1/4 open with a new needle and 5.5 " air filter.

11-23-2017, 07:25 PM	#2
1930artdeco Senior Member Join Date: May 2010 Location: Lynden, Wa Posts: 3,552	Re: Marvel/ Allstate carb mixture settings Sponsored Links (Register now to hide all advertisements) When I had mine on ( need to put it back on) I could only start it with the GAV open one full turn and then close it totally down once running. The idle mix screw did not seem to make much difference but I had a different screw in the body and need to put in an original. Mike __________________ 1930 TownSedan (Briggs) 1957 Country Sedan