Notices
1967 - 1972 F-100 & Larger F-Series Trucks Discuss the Bumpsides Ford Truck

What year did vented gas tanks start?

 
  #1  
Old 09-29-2015, 12:49 PM
Uni Moe's Avatar
Uni Moe
Uni Moe is offline
Elder User
Thread Starter
Join Date: Oct 2013
Location: Manitoba, Canada
Posts: 922
Uni Moe is gaining momentum as a positive member of FTE.
What year did vented gas tanks start?

Just wondering if I need a vented or non-vented cap for my 68, behind the seat gas tank?
Are there differences in the filler neck as well?
 
  #2  
Old 09-29-2015, 12:56 PM
NumberDummy's Avatar
NumberDummy
NumberDummy is offline
Ford Parts Specialist
Join Date: Nov 2006
Location: Simi Valley, CA
Posts: 83,134
NumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputation
Originally Posted by Uni Moe View Post
Just wondering if I need a vented or non-vented cap for my 68, behind the seat gas tank?
Are there differences in the filler neck as well?
It's a vented cap. Beginning in 1970, the cap could be vented or non vented---if it has Evaporative Emission.

B6TZ-9030-A (replaced 8A-9030-A) .. Fuel Cap-Vented Anti-Surge Non Locking (Motorcraft FC-23)

1951/69 all trucks / 1970/72 F250/350 / 1970/72 F100 without Evaporative Emission
 
  #3  
Old 09-29-2015, 06:00 PM
JEFFFAFA's Avatar
JEFFFAFA
JEFFFAFA is offline
Post Fiend
Join Date: Mar 2013
Location: Phoenix, Az.
Posts: 12,795
JEFFFAFA has a spectacular reputation.JEFFFAFA has a spectacular reputation.JEFFFAFA has a spectacular reputation.JEFFFAFA has a spectacular reputation.JEFFFAFA has a spectacular reputation.JEFFFAFA has a spectacular reputation.JEFFFAFA has a spectacular reputation.JEFFFAFA has a spectacular reputation.JEFFFAFA has a spectacular reputation.JEFFFAFA has a spectacular reputation.JEFFFAFA has a spectacular reputation.
Originally Posted by Uni Moe View Post
Just wondering if I need a vented or non-vented cap for my 68, behind the seat gas tank?
Are there differences in the filler neck as well?
Yes, there was a difference on the filler necks. The non-vented caps had deeper tangs on them to reach down to the deeper evap emission's filler neck. Ford did it so people couldn't get them mixed up.
 
  #4  
Old 09-30-2015, 01:53 AM
NumberDummy's Avatar
NumberDummy
NumberDummy is offline
Ford Parts Specialist
Join Date: Nov 2006
Location: Simi Valley, CA
Posts: 83,134
NumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputation
Originally Posted by JEFFFAFA View Post
Yes, there was a difference on the filler necks. The non-vented caps had deeper tangs on them to reach down to the deeper evap emission's filler neck. Ford did it so people couldn't get them mixed up.
Evaporative Emission filler necks also had a restrictor inside to prevent leaded gas station nozzles from fitting in. Back then, there were two sizes of nozzles, the leaded fuel nozzle was larger in diameter.
 
  #5  
Old 09-30-2015, 07:30 PM
JEFFFAFA's Avatar
JEFFFAFA
JEFFFAFA is offline
Post Fiend
Join Date: Mar 2013
Location: Phoenix, Az.
Posts: 12,795
JEFFFAFA has a spectacular reputation.JEFFFAFA has a spectacular reputation.JEFFFAFA has a spectacular reputation.JEFFFAFA has a spectacular reputation.JEFFFAFA has a spectacular reputation.JEFFFAFA has a spectacular reputation.JEFFFAFA has a spectacular reputation.JEFFFAFA has a spectacular reputation.JEFFFAFA has a spectacular reputation.JEFFFAFA has a spectacular reputation.JEFFFAFA has a spectacular reputation.
Originally Posted by NumberDummy View Post
Evaporative Emission filler necks also had a restrictor inside to prevent leaded gas station nozzles from fitting in. Back then, there were two sizes of nozzles, the leaded fuel nozzle was larger in diameter.
I don't remember that Bill. The way I remember it, 1975ish when the catalytic convertors came out they needed Unleaded fuel. The unleaded fuel caused the restrictor in the filler necks not evap. emissions.
 
  #6  
Old 10-03-2015, 07:45 PM
GLR's Avatar
GLR
GLR is online now
Posting Legend
Join Date: Sep 2003
Location: NY and VA
Posts: 37,763
GLR has a superb reputationGLR has a superb reputationGLR has a superb reputationGLR has a superb reputationGLR has a superb reputationGLR has a superb reputationGLR has a superb reputationGLR has a superb reputationGLR has a superb reputationGLR has a superb reputationGLR has a superb reputation
I still have an adapter to go from the large nozzle to the small filler. My 86 and 87 F250s have the large diameter filler neck (8600 GVW) with the dual air pumps they were ok to use leaded fuel (if you could find it...)
 
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Kennyhbh
1948 - 1956 F1, F100 & Larger F-Series Trucks
5
11-30-2016 12:26 PM
ftodaro
6.7L Power Stroke Diesel
22
02-10-2016 10:39 PM
Rk33
1948 - 1956 F1, F100 & Larger F-Series Trucks
3
02-06-2016 04:11 PM
turnrjr
1948 - 1956 F1, F100 & Larger F-Series Trucks
17
01-18-2016 12:36 AM
33homerdoodle
1987 - 1996 F150 & Larger F-Series Trucks
5
01-17-2016 04:00 PM


Thread Tools
Search this Thread
Quick Reply: What year did vented gas tanks start?


Contact Us - About Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.