Fuel Cap Variant

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gbeard76209
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Fuel Cap Variant

Post by gbeard76209 »

I have a 1946 model 140, and in discussions on fuel caps, I've never seen this exact style pictured online, I'm curious about the nuances of these caps in relation to other discussions speaking to providing the correct amount of venting to allow for fuel flow.
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6643
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Re: Fuel Cap Variant

Post by 6643 »

That is not one of the caps addressed in the discussions. I'd be very cautious given it carries the word "vacuum" stamped on the edge.
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6597
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Re: Fuel Cap Variant

Post by 6597 »

Required reading...

https://www.cessna120140.com/Forum2018/ ... f=10&t=103

This with 2 1/8" holed drilled on the top will aproximate the originals...

https://www.aircraftspruce.com/catalog/ ... ey=3019014

This is what you oughta have...
gascapcessna140small.jpg
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Last edited by 6597 on Sun Nov 30, 2025 8:11 pm, edited 1 time in total.
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6643
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Re: Fuel Cap Variant

Post by 6643 »

6597 wrote: ↑Sun Nov 30, 2025 6:03 pm Required reading...

file:///home/david/Desktop/gas_cap_array_may__05.pdf
This is a file that was posted in the old forum. I've attached it here.
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dcannon
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Re: Fuel Cap Variant

Post by dcannon »

gbeard76209 wrote: ↑Sat Nov 29, 2025 9:48 pm I have a 1946 model 140, and in discussions on fuel caps, I've never seen this exact style pictured online, I'm curious about the nuances of these caps in relation to other discussions speaking to providing the correct amount of venting to allow for fuel flow. :D
Photo is a non-vented automotive fuel cap. Ford/Lincoln/Mercury. Search E1AZ-9030-A

So definitely not appropriate.
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6643
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Re: Fuel Cap Variant

Post by 6643 »

dcannon wrote: ↑Sun Nov 30, 2025 8:15 pm Photo is a non-vented automotive fuel cap. Ford/Lincoln/Mercury. Search E1AZ-9030-A

So definitely not appropriate.
(Somewhat tongue in cheek...)
Well, if you think the official Cessna caps weren't also used in an automotive (or more likely, farm tractor) application, then you're fooling yourself!
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gbeard76209
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Re: Fuel Cap Variant

Post by gbeard76209 »

dcannon wrote: ↑Sun Nov 30, 2025 8:15 pm
gbeard76209 wrote: ↑Sat Nov 29, 2025 9:48 pm I have a 1946 model 140, and in discussions on fuel caps, I've never seen this exact style pictured online, I'm curious about the nuances of these caps in relation to other discussions speaking to providing the correct amount of venting to allow for fuel flow. :D
Photo is a non-vented automotive fuel cap. Ford/Lincoln/Mercury. Search E1AZ-9030-A

So definitely not appropriate.
Might not be appropriate haha, thats crazy to find out, at least they're from Ford am I right? This airplane is new to me, and as far as I can tell by looking at pictures, the fuel caps have been this way since the 80s. It seems that the hole in them was drilled, similar to what other fixes suggest for replacing the incorrect ones, so not entirely non-vented.
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gbeard76209
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Re: Fuel Cap Variant

Post by gbeard76209 »

6597 wrote: ↑Sun Nov 30, 2025 6:03 pm Required reading...

https://www.cessna120140.com/Forum2018/ ... f=10&t=103

This with 2 1/8" holed drilled on the top will aproximate the originals...

https://www.aircraftspruce.com/catalog/ ... ey=3019014

This is what you oughta have...

gascapcessna140small.jpg
Seems like finding originals for sale is next to impossible, know where I could get a pair? Thanks for the helpful info on making one myself if need be.
Last edited by gbeard76209 on Mon Dec 01, 2025 1:35 pm, edited 1 time in total.
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dcannon
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Re: Fuel Cap Variant

Post by dcannon »

https://www.aircraftspruce.com/catalog/ ... lange2.php

Photo doesnt show it but these are drilled with 2 holes
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6643
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Re: Fuel Cap Variant

Post by 6643 »

dcannon wrote: ↑Mon Dec 01, 2025 10:04 am https://www.aircraftspruce.com/catalog/ ... lange2.php

Photo doesnt show it but these are drilled with 2 holes
Under the photo:
"Photo may represent series and not specific product"
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