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E body Fuel Tank Vent Location

Posted By: cataclysm80

E body Fuel Tank Vent Location - 03/13/08 07:46 PM

Hello Everyone, My trunk extension panel was previously replaced on my 70 challenger. Now I've just received my new fuel tank vent kit, and need to know where to drill to mount the plate with the grommets.

I could use some measurements.

Is it one big oval hole, or 2 little holes just under the grommets?

My 70 challenger only has 1 vent line. Do I need both grommets, or should I only have one?

What's the plate for? Why not put the grommet right in the trunk extension panel?

I'd like to do this "correct". Input appreciated.

Thanks
Tav

Attached picture 4270770-Fueltankvent.jpg
Posted By: Moparnut

Re: E body Fuel Tank Vent Location - 03/14/08 10:43 AM

Tav

The hole in the trunk extension is a large oval.
The plate covers the oval.
For correct appearing you will want to put this in and has both gromets.
I don't have measurements at the moment. But here are some pics.

Attached picture 4272501-DSC00161.JPG
Posted By: Moparnut

Re: E body Fuel Tank Vent Location - 03/14/08 10:44 AM

#2

Attached picture 4272503-DSC00159.JPG
Posted By: cataclysm80

Re: E body Fuel Tank Vent Location - 03/14/08 11:49 AM

That helps, now I know which way the plate goes. 2 screws on one side vs. 1 screw on the other.

Anyone else have any info?

Thanks
Tav
Posted By: jrwoodjoe

Re: E body Fuel Tank Vent Location - 03/14/08 12:19 PM

I just pulled mine out the other night. I'll get you some pics of oval cut out with the location measurements later this morning. Should be able to get you fixed up.

Joe
Posted By: cataclysm80

Re: E body Fuel Tank Vent Location - 03/14/08 12:26 PM

That would be great! Thanks!

Tav
Posted By: jrwoodjoe

Re: E body Fuel Tank Vent Location - 03/14/08 01:59 PM

Hopefully these 2 photos will help. If you need something else then let me know.

Attached picture 4272784-fuelventcutout1.jpg
Posted By: jrwoodjoe

Re: E body Fuel Tank Vent Location - 03/14/08 02:01 PM

The edge of the trunk extension does NOT run parallel to the edge of the fuel vent cut out. The trunk extension is angled on the edge.

Joe

Attached picture 4272788-fuelventcutout2.jpg
Posted By: cataclysm80

Re: E body Fuel Tank Vent Location - 03/14/08 02:03 PM

PERFECT!! Thank you very much!

Tav

(did you get your fender converted over to 70 style yet?)
Posted By: jrwoodjoe

Re: E body Fuel Tank Vent Location - 03/14/08 02:08 PM

Not yet. I'm still a little about it and that I didn't notice until a few days ago. I do not have a welder so the guy who is doing my media blasting has been doing my sheet metal repair also. I'll have him do it when I take the rest of the car over to be blasted.

Thanks, Joe
Posted By: 71 Six Pack

Re: E body Fuel Tank Vent Location - 03/14/08 04:09 PM

Is that how it's supposed to look, a grommet with a small tube coming out. The one on my '70 Challenger is a grommet with a large tube, similar to fuel fill.

Attached picture 4273043-DSC01812.jpeg
Posted By: Moparnut

Re: E body Fuel Tank Vent Location - 03/14/08 04:15 PM

Large tube is for a 71-74
Posted By: 71 Six Pack

Re: E body Fuel Tank Vent Location - 03/14/08 04:29 PM

Thanks, its definitely not right then as the car was built October 1969.

Joe
Posted By: Blues_Cuda

Re: E body Fuel Tank Vent Location - 03/14/08 04:48 PM

Quote:

The one on my '70 Challenger is a grommet with a large tube, similar to fuel fill.



Possibly an emissions deal...ECS?

We have a '70 Barracuda that originally had the large vent tube in the trunk that was about the same diameter as a fuel fill. It had 4 smaller lines at the very bottom that ran to the gas tank and/or fuel return.



I replaced the whole nine yards with the standard fuel tank and vent assembly.
Posted By: 71 Six Pack

Re: E body Fuel Tank Vent Location - 03/14/08 04:51 PM

Maybe, car is a California car with the California emissions called out on the Fender Tag. I recall only one vent tube coming out of the tank though. My 71 has 4 vent tubes coming out of the tank.

Joe
Posted By: Ruppman

Re: E body Fuel Tank Vent Location - 03/16/08 02:25 AM

Quote:

Maybe, car is a California car with the California emissions called out on the Fender Tag. I recall only one vent tube coming out of the tank though. My 71 has 4 vent tubes coming out of the tank.

Joe



Right, California sold vehicles only in 70. Should have N95 on the fender tag. ECS is Evap control. routes the carb bowl gas fumes back to the tank instead of letting them vent to atmosphere.

Mark
Posted By: larry4406

Re: E body Fuel Tank Vent Location - 03/16/08 10:49 AM

The pictures don't agree with each other on the placement of the screws. The green car has the two screws near the quarter whereas the blue one has the two screws on other side of the oval hole.
Posted By: B5TA

Re: E body Fuel Tank Vent Location - 03/16/08 02:31 PM

Took this pic . from my " NOT RESTORED " '70 T/A. If you look real hard through the rust you will see the screws. I've had this since early '73 so I know it hasn't been touched. Man I wish I had some Money! I'd be on it! Hope this helps. Kev

Attached picture 4277579-100_2782.jpg
Posted By: 71 Six Pack

Re: E body Fuel Tank Vent Location - 03/16/08 03:50 PM

Quote:

Right, California sold vehicles only in 70. Should have N95 on the fender tag. ECS is Evap control. routes the carb bowl gas fumes back to the tank instead of letting them vent to atmosphere.

Mark



The fender tag does have N95, California Emissions called out. I'm pretty sure the tank only had one tube coming out of it. I'll have to double check, which will be easy as the original tank is out of the car due to a leak.

So California emissions is basically carb fumes back to tank correct? That would mean I should have two lines from the fuel tank to the carb, one for supply, one for vent return. The emissions do not also include the 3-tube breather as well do they?

Thanks,

Joe

Attached picture 4277797-DSC01820.jpeg
Posted By: beepbeep

Re: E body Fuel Tank Vent Location - 03/16/08 03:59 PM

Quote:

The emissions do not also include the 3-tube breather as well do they?

Sure does.
Posted By: 71 Six Pack

Re: E body Fuel Tank Vent Location - 03/16/08 04:07 PM

Thanks Beepbeep, I will then assume that the one on the car is incorrect?

Joe

Attached picture 4277856-DSC01823.jpeg
Posted By: beepbeep

Re: E body Fuel Tank Vent Location - 03/16/08 06:36 PM

6 cyl. used 2 port, 8 cyl. used 3 port.
Posted By: jrwoodjoe

Re: E body Fuel Tank Vent Location - 03/16/08 06:42 PM

Quote:

Took this pic . from my " NOT RESTORED " '70 T/A. If you look real hard through the rust you will see the screws. I've had this since early '73 so I know it hasn't been touched. Man I wish I had some Money! I'd be on it! Hope this helps. Kev



My Blue 70 Challenger is an early car and had 1 repaint in the 80s but is basically unmolested. I wonder if they varied at the factory any. Mine does match yours on your T/A.

Joe
Posted By: 71 Six Pack

Re: E body Fuel Tank Vent Location - 03/16/08 07:17 PM

Excellent as always Beepbeep. Looks like I need to get the correct 3-port breather, as well as the correct fuel tank.

Joe
Posted By: beepbeep

Re: E body Fuel Tank Vent Location - 03/16/08 07:27 PM

Just a FYI, none of the repo tanks come with the expansion tank, just need to remember when filling not to top it off so there is some expansion room, otherwise it will make its own, usually all over your quarter panel.
Posted By: cataclysm80

Re: E body Fuel Tank Vent Location - 03/17/08 12:44 PM

Quote:


My Blue 70 Challenger is an early car and had 1 repaint in the 80s but is basically unmolested. I wonder if they varied at the factory any. Mine does match yours on your T/A.

Joe



Maybe the car in Moparnuts picture is not an untouched original, but a restored car?

It was still good to have the picture. Thanks

Tav
Posted By: cataclysm80

Re: E body Fuel Tank Vent Location - 03/17/08 12:46 PM

Also notice in the B5TA pic that the second grommet does not have a hole through it.

Good thing my original grommets came in a box, I bet that's tough to find.

Tav
Posted By: Blues_Cuda

Re: E body Fuel Tank Vent Location - 03/22/08 09:10 PM

I happened to run across these pics today of a '70 Cuda my buddy had sitting at his shop.



Attached picture 4294487-2006MiscShots3608-1.jpg
Posted By: Blues_Cuda

Re: E body Fuel Tank Vent Location - 03/22/08 09:11 PM

Another picture.

Attached picture 4294490-2006MiscShots36091.jpg
Posted By: Blues_Cuda

Re: E body Fuel Tank Vent Location - 03/22/08 09:12 PM

Last picture.

This particular car came out of Ron Slobe's several years ago...

Attached picture 4294496-2006MiscShots3610-1.jpg
Posted By: cataclysm80

Re: E body Fuel Tank Vent Location - 03/24/08 02:40 PM

Thanks. Those screws are positioned like the other original cars posted.

Tav
Posted By: Anonymous

Re: E body Fuel Tank Vent Location - 07/07/08 08:16 PM

Can you post a few more pictures of the vent attaching to the tank? I have a 73 challenger, but removed all the emissions stuff and cannot determine how everything fits. I have the kit from year one and the last pictures that were posted look like part of the kit.

More pictures would help!!!!

I am new to this forum.

Thanks
Posted By: cataclysm80

Re: E body Fuel Tank Vent Location - 07/08/08 08:51 PM

Are you using your original 73 challenger gas tank with the 4 vents in the front?

What emission stuff did you remove?

Tav
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