'71 Duster gas cap question

-
PlymCrazy

PlymCrazy

Well-Known Member
Joined
Mar 19, 2021
Messages
303
Reaction score
335
Location
Western NY
From my understanding the '71 gas cap was a one-year-only. '71 Duster 340. I currently have a lockable cap on mine and want to replace it with a paintable, original style. Before I start a WTB ad, can you guys confirm this is in fact the case? And if so, will any A-body '71 cap work, or is that yet another unique aspect of the cap?
- Nick
 
340wedge said:
If you do not have the extra venting tube in the trunk and only have the filler tube you need a vented gas cap. I believe they make them now aftermarket as well.

1971 Plymouth Scamp Fuel System - Gas Caps Fuel System - Gas Caps

Gas cap and trim ring for your classic Dodge, Plymouth Chevy and GMC car of pickup truck.
www.autometaldirect.com www.autometaldirect.com
Click to expand...
I've pulled the trigger on ordering 3x so far from other sources over the last several months. Each time resulted in a return/refund due to unavailability or non-fitment upon receipt. Ordered vented and non-vented both with no success. Began to give up hope thinking maybe it's just no longer available. It's been a while since I checked, but I don't recall having the extra vent tube. But the car does have under the hood what appears to be the early start of emissions, being born in LA. I have parts arrive 2-3x a week for other vehicle repairs I have going regularly at my place, but this one is getting a bit frustrating. But I'll keep trying...
 
PlymCrazy said:
From my understanding the '71 gas cap was a one-year-only. '71 Duster 340. I currently have a lockable cap on mine and want to replace it with a paintable, original style. Before I start a WTB ad, can you guys confirm this is in fact the case? And if so, will any A-body '71 cap work, or is that yet another unique aspect of the cap?
- Nick
Click to expand...
This chart may help. It's a sticky in the fuel forum. Gas Cap chart

Gas Caps by year.jpeg
 
340wedge said:
If you do not have the extra venting tube in the trunk and only have the filler tube you need a vented gas cap. I believe they make them now aftermarket as well.

1971 Plymouth Scamp Fuel System - Gas Caps Fuel System - Gas Caps

Gas cap and trim ring for your classic Dodge, Plymouth Chevy and GMC car of pickup truck.
www.autometaldirect.com www.autometaldirect.com
Click to expand...
That's the way my 71 is set up.

PlymCrazy said:
I've pulled the trigger on ordering 3x so far from other sources over the last several months. Each time resulted in a return/refund due to unavailability or non-fitment upon receipt.
Click to expand...
I went through that too. I got my cap from Jeff @ https://521restorations.com/ The rubber seal rips easily but I scarfed one from another cap that I had bought, didn't fit, and wasn't worth returning.
 
I'll post some pics later of what my setup is. Maybe you guys can help me make up my mind on which wrong cap to order again :rofl:

Fair enough?
 
image.jpg

From previous pics and this one, no additional tube. But looks like this has what looks like the beginning of emissions?
 
@toolmanmike is there a way I can move this thread to Fuel and Air? Or is this something I'd need your assistance on? I posted the pics too btw...

- Nick
 
you need to find the 71 type by the looks of your setup, or if you cant change the fill tube might work
 
I'm running into the same dilemma. In the above pic the '71 cap is what I had back in the day before I left it on the trunk and drove off (1997). I have yet to find one that fits the same and locks in place when you turn it. Only ones that fit just keep spinning although they do get "snug" and that's when i quit turning it. Any luck on finding a good replacement that actually works??
 
You must log in or register to reply here.
-

Back
Top