02-29-2016, 06:13 PM | #1 |
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Gav
Somebody please explain how the GAV works and why. 31 Model A Tudor, Zenith carburetor. Thanks, Marv
[email protected] Last edited by majohnson00; 02-29-2016 at 06:15 PM. Reason: add e-mail |
02-29-2016, 06:30 PM | #2 |
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Re: Gav
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02-29-2016, 07:20 PM | #3 |
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Re: Gav
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02-29-2016, 07:30 PM | #4 |
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Re: Gav
Steve I reference your carb site often
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02-29-2016, 08:28 PM | #5 |
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Re: Gav
Steve, Exactly what I was looking for. I have the big Model A Service manual, but it really does not explain it (to me, anyway), like the link you sent. Thanks, Marv
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03-01-2016, 12:53 AM | #6 |
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Re: Gav
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03-01-2016, 01:11 AM | #7 |
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Re: Gav
If you still have a question let us know.
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03-01-2016, 08:59 AM | #8 |
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Re: Gav
On setting the GAV, Chiefs' system was: "With a warm engine, run at a CONSTANT speed of 20 to 25 MPH in second gear & adjust your GAV for the BEST, SMOOTHEST RUNNING"
And IF your GAV setting affects your idle, YOUR IDLE SPEED IS TOO FAST! Bill W.
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03-01-2016, 09:25 AM | #9 |
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Re: Gav
Check out page 7: Nice drawing that Tom Endy did:
http://modelabasics.com/Carb/ZenithPassageways.pdf
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03-01-2016, 10:10 AM | #10 |
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Re: Gav
Another helpful thing about the GAV:
One turn is good to begin with for cold starts. If you start the engine and it dies in 1 or 2 seconds. Open the GAV some more (counter clockwise) Like if temperature is below freezing. Close GAV as it warms up. Normal position after warm up is a 1/4 turn off the seat. Be gentle when closing GAV it is a brass needle and early ones have a brass seat also ... it is easy to damage these parts. |
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