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Old 10-07-2021, 02:24 PM   #1
jerrytocci
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Default Gas cap 30-31

Who sells a cap that is vented ? My car has stalled twice since gassing up . It is the cap because it runs fine with loose cap and I can hear wooosh when I release the bad cap
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Old 10-07-2021, 03:28 PM   #2
Ivan in southeast va.
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Default Re: Gas cap 30-31

Snyders, their cap has 2 rivets instead of one. keeps the gasket in place and not covering the vent hole.
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Old 10-07-2021, 03:50 PM   #3
Ivan in southeast va.
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Default Re: Gas cap 30-31

This one
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Old 10-07-2021, 04:23 PM   #4
nkaminar
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Default Re: Gas cap 30-31

Make sure it is not a radiator cap with is not vented. I have the Snyders cap and I like it.
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Old 10-07-2021, 06:41 PM   #5
Tom Endy
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Default Re: Gas cap 30-31

https://www.santaanitaas.org/wp-cont...-Cap-30-31.pdf
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Old 10-07-2021, 07:13 PM   #6
nkaminar
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Default Re: Gas cap 30-31

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To be honest, I would prefer a non vented cap and a pipe leading from the top of the tank to somewhere under the car or to the inlet to the carburetor or some other location. With the windshield open I get the gas fumes from the vented cap coming into the inside of the car. On my Model T I had a small diameter copper pipe leading from the top of the gas tank to the exhaust pipe before the muffler. It added a little pressure to the tank so that I could go up steep hills. Plus, the exhaust gas, being free of most oxygen, was safer than having air in the gas tank. There was a coil of the small diameter copper tubing so that any exhaust gas was cooled before it got into the gas tank. The gas cap was sealed and had an O ring gasket.
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A is for apple, green as the sky.
Step on the gas, for tomorrow I die.
Forget the brakes, they really don't work.
The clutch always sticks, and starts with a jerk.
My car grows red hair, and flies through the air.
Driving's a blast, a blast from the past.
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Old 10-07-2021, 07:24 PM   #7
Gary WA
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Default Re: Gas cap 30-31

Why not clean your existing cap?
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Old 10-08-2021, 07:14 AM   #8
chap52
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Default Re: Gas cap 30-31

I not only cleaned the vent holes in my gas cap but added an additional one. Be careful not to drill into the bottom of the pretty chrome part. Chap
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Old 10-08-2021, 11:37 AM   #9
jerrytocci
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Default Re: Gas cap 30-31

I tried drilling but it still did not vent properly
I ordered from Snyder this a.m.
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Old 10-08-2021, 12:13 PM   #10
Bob C
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Default Re: Gas cap 30-31

Quote:
Originally Posted by nkaminar View Post
Make sure it is not a radiator cap with is not vented. I have the Snyders cap and I like it.
1930-31 Radiator and gas caps are not interchageable, the radiator cap is
2 1/4" and the gas cap is 2 5/8".
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