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Author Topic:   Flip Down Gas Cap Question
mellowyellow
Gearhead

Posts: 6609
From: So. Fl.
Registered: Aug 2000

posted 05-15-2001 10:41 AM     Click Here to See the Profile for mellowyellow     Edit/Delete Message   Reply w/Quote
In reading a catalog of a parts supplier, I came across MCA approved flip down gas caps for 67-70 Mustangs. A foot note warning reads- Warning. "These flip down gas caps are designed for show use only. DO NOT use as a regular gas cap." At $i30 per pop, would expect to be able to use it! I know these caps were repo'd, but this?? Anyone know about these caps?

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67mike
Gearhead

Posts: 165
From: Arab,AL
Registered: Mar 2001

posted 05-15-2001 12:28 PM     Click Here to See the Profile for 67mike   Click Here to Email 67mike     Edit/Delete Message   Reply w/Quote
We have one on our 67 coupe and I am not really happy with it. It may or may not be original on our car. It was on it when we bought it. We will probably replace later. mike

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67resto-coupe
Gearhead

Posts: 127
From: sacramento, ca. usa
Registered: May 2000

posted 05-15-2001 07:02 PM     Click Here to See the Profile for 67resto-coupe   Click Here to Email 67resto-coupe     Edit/Delete Message   Reply w/Quote
which catalog are you referring to? i have the Nat'l Parts Depot, '00 issue and it has a similar disclaimer. although, they indicate that there is a twist on cap to use for road use. it's kinda confusing, but seems like you should be able to call NPD and get the skinny on this deal. i'm considering the same deal, but just haven't got to this part of the build...keep us/me posted.

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mellowyellow
Gearhead

Posts: 6609
From: So. Fl.
Registered: Aug 2000

posted 05-15-2001 07:08 PM     Click Here to See the Profile for mellowyellow     Edit/Delete Message   Reply w/Quote
I have an original flip open cap in good cond, but stumbled across the new one and wondered why it couldn't be used

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Ryan Wilke
Gearhead

Posts: 2047
From: Stanton, Michigan 49707
Registered: Oct 2000

posted 05-15-2001 07:13 PM     Click Here to See the Profile for Ryan Wilke   Click Here to Email Ryan Wilke     Edit/Delete Message   Reply w/Quote
Wasn't there something about being 'vented' or 'non-vented' on those flip-down caps?

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Dave Witthoeft
Gearhead

Posts: 2219
From: IL.
Registered: Dec 2000

posted 05-15-2001 08:30 PM     Click Here to See the Profile for Dave Witthoeft   Click Here to Email Dave Witthoeft     Edit/Delete Message   Reply w/Quote
I was told by the guy at the smog place here in Il. If it was available with the car in that year, you could use it. My 69 and my 71 mach both have pop off gas caps.

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MCA# 48755
71 Mach 1
71 Grande
69 Fastback

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jkilroy
Gearhead

Posts: 1808
From: Vicksburg, MS
Registered: Dec 99

posted 05-16-2001 06:04 PM     Click Here to See the Profile for jkilroy   Click Here to Email jkilroy     Edit/Delete Message   Reply w/Quote
I have a flip-cap on my 68. I would suggest getting some cork gasket material about 1/8" thick and cutting another gasket for it and gluing it right on top of the factory gasket. Makes the cap close a lot tighter and it doesn't leak when you hammer on it with a full tank.

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Jay Kilroy
68' Fastback GT 390
"No such thing as a cam thats too big"

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kcode
Gearhead

Posts: 2983
From: alvaton,ky,usa Suburb of Bowling Green, M&M #79, MCA #29208
Registered: Jun 99

posted 05-16-2001 11:20 PM     Click Here to See the Profile for kcode   Click Here to Email kcode     Edit/Delete Message   Reply w/Quote
I've got an NOS second generation 71 flip open on Beckys 66. The second generation has a separate twist on cap inside the flip open part. The way I heard was that EPA didn't like the way the original caps sealed, goes along with Jays statement, they leaked

Mike

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Scott302
Journeyman

Posts: 28
From: Livonia, MI, USA
Registered: Mar 2001

posted 05-17-2001 07:56 AM     Click Here to See the Profile for Scott302     Edit/Delete Message   Reply w/Quote
A liability lawsuit forced Ford to take them off the market for awhile. They redesigned them with a separate twist on cap. When the repros came out they came with parts to work either way. The reproductions are sold for display only if you use the "original" design cap seal. If you wish to use the cap on the road you must use the separate twist on cap and remove the flip down cap mounted sealing assy.

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Scott Halseth
National Parts Depot
65 Convt
66 Coupe

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67resto-coupe
Gearhead

Posts: 127
From: sacramento, ca. usa
Registered: May 2000

posted 05-17-2001 10:44 AM     Click Here to See the Profile for 67resto-coupe   Click Here to Email 67resto-coupe     Edit/Delete Message   Reply w/Quote
DING, DING, DING...we have a winner!! now that makes perfect sense and i definitely wasn't aware of any leaking problems, so thanks very much!

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IIblue74
Gearhead

Posts: 163
From: memphis,tn
Registered: Aug 2000

posted 05-17-2001 03:11 PM     Click Here to See the Profile for IIblue74   Click Here to Email IIblue74     Edit/Delete Message   Reply w/Quote
I want to nominate Scott "302" Halspeth as member of the decade (at least). It's great to have a member who can answer the little ...but?... questions that slow our progress on great projects and keep our dreams from happening. Everyday Joe can't spend $50 or $100 on something and have problems and turn around and try again tomorrow. My .02. Thanks Scott

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SteveLaRiviere
Administrator

Posts: 42139
From: Saco, Maine
Registered: May 99

posted 05-17-2001 06:57 PM     Click Here to See the Profile for SteveLaRiviere   Click Here to Email SteveLaRiviere     Edit/Delete Message   Reply w/Quote
I'll second that!

Both Scott and Rick have been very helpful telling us the real deal on the parts questions we've had.

National Parts Depot rocks!

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'72 Mustang Sprint Coupe 351C 4V/FMX/4.30 Trac Loc
'94 F-150 XL 5.8L/E4OD/3.55 Limited Slip
'97 Probe GTS 2.5L DOHC {Wife's car...}
All Fords since 1977

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jkilroy
Gearhead

Posts: 1808
From: Vicksburg, MS
Registered: Dec 99

posted 05-17-2001 10:04 PM     Click Here to See the Profile for jkilroy   Click Here to Email jkilroy     Edit/Delete Message   Reply w/Quote
Mine leaked like a bucket with a hole but after I glued on another gasket, no more. The fit is so snug now you have to lean into it to get it to close.

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Jay Kilroy
68' Fastback GT 390
"No such thing as a cam thats too big"

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seaweed
Gearhead

Posts: 117
From: MA.
Registered: Dec 2000

posted 05-19-2001 10:53 AM     Click Here to See the Profile for seaweed     Edit/Delete Message   Reply w/Quote
I would think the cap to have some kind of a vent kole in the cap.--- Back in 63 I had a new chev.pick up & lost the cap when filling up & had to get another one. The cap also went on snuggly.--- Well when it came time to gas it up again it was hard to get off & when I did the tank imploded so instead of being 16 gal. tank it was a 11 gal. I have a 68 shelby with pop off cap & it is kind of loose .--it does not lose any gas when i get on it.---Be carefull.

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