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Big mouth gas tanks
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dickie
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PostPosted: Sat Aug 21, 2010 9:31 pm    Post subject: Big mouth gas tanks Reply with quote

What years were the big mouth gas tanks used? and were they only installed in the beetles?
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Bruce
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PostPosted: Sat Aug 21, 2010 11:31 pm    Post subject: Reply with quote

The 100mm split tank was used on split dash cars. Then zwitters used the same tank but with a 60mm neck. After zwitters, ovals up to 55 used a tank similar to the earlier 100mm split tank. I say similar because they are different.
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dickie
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PostPosted: Sun Aug 22, 2010 10:02 pm    Post subject: big mouth gas tanks Reply with quote

did they use the same tanks on the barndoor bus? I just found an untouched
54 beetle, and it has the same gas tank as my 56 euro spec sunroof, the same as the 57 beetle. The 54 also has snowflake lense tail lights, the same as on my 58. Some of these combo's seem to be odd.
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Bruce
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PostPosted: Sun Aug 22, 2010 11:56 pm    Post subject: Re: big mouth gas tanks Reply with quote

dickie wrote:
did they use the same tanks on the barndoor bus?
No

dickie wrote:
I just found an untouched 54 beetle, and it has the same gas tank as my 56 euro spec sunroof, the same as the 57 beetle. The 54 also has snowflake lense tail lights, the same as on my 58. Some of these combo's seem to be odd.

What makes you think that a 56 year old car hasn't been modified during it's life? Your 54 most certainly has been updated.
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Spanish Flea
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PostPosted: Mon Aug 23, 2010 7:22 am    Post subject: Reply with quote

So a deluxe bug made in Aug. '52, should have the 100mm. with the pressing.
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dmp
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PostPosted: Mon Aug 23, 2010 8:16 am    Post subject: Reply with quote

The filler neck reduced in size before the zwitters, at the end of July '52. It's covered here.
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Spanish Flea
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PostPosted: Mon Aug 23, 2010 10:23 am    Post subject: Reply with quote

dmp wrote:
The filler neck reduced in size before the zwitters, at the end of July '52. It's covered here.


dmp, thanks for the link.
Here is the info i pulled on that thread.


Fuel tank filling neck changed from 100 mm to 60 mm by chassis 1-0374199 on 29th of July 1952.

Then went to a 100 mm neck on 10th of March 1953, chassis 1-0454951.


Thanks,
Spanish Flea
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Last edited by Spanish Flea on Tue Aug 24, 2010 10:28 am; edited 1 time in total
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dickie
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PostPosted: Mon Aug 23, 2010 2:59 pm    Post subject: big mouth gas tanks Reply with quote

What makes me think it hasn't been modified in all these years? The previous owner has had it sitting in his field since the early 60's when they took out the tranny and engine to put into a dune buggy. So, given that the paint is all original, fenders and all, the red door panels are still on it, etc, I did assume that it hadn't been messed with. However, given the anomalies I will most certainly take a very close look again, and question the PO a bit more. Good point.
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dickie
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PostPosted: Mon Aug 23, 2010 3:30 pm    Post subject: big mouth gas tanks Reply with quote

I will see if I can post a photo of the tank, and the car. Thanks. What is the link that you refer to?
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Joshua B
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PostPosted: Mon Aug 23, 2010 8:51 pm    Post subject: Reply with quote

There are two types of 100mm tanks as well. One with the "indention" tight around the filler neck, and the other that indents around the neck and then comes further out. I think the one with it tight around the neck is early 49 to zwitter and the wide indention is later 54-55. Or maybe they are different manufacturers???
KDF
Image may have been reduced in size. Click image to view fullscreen.


Early
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100mm small indention mid1949 to zwitter
Image may have been reduced in size. Click image to view fullscreen.

Image may have been reduced in size. Click image to view fullscreen.


Zwitter style
Image may have been reduced in size. Click image to view fullscreen.


100mm large indention 1954-1955
Image may have been reduced in size. Click image to view fullscreen.

Image may have been reduced in size. Click image to view fullscreen.


Hump back style vertical ribs 1956-1960??
Image may have been reduced in size. Click image to view fullscreen.


Humb back horizontal ribs 1956-1960?? or Ghia??
Image may have been reduced in size. Click image to view fullscreen.
[/img]


Last edited by Joshua B on Tue Aug 24, 2010 9:42 am; edited 1 time in total
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PostPosted: Mon Aug 23, 2010 11:40 pm    Post subject: Reply with quote

Spanish Flea wrote:
Fuel tank filling neck changed from 100 mm to 60 mm by chassis 1-0374199 on 29th of July 1952.

Then went to a 80 mm neck on 10th of March 1953, chassis 1-0454951.

No, in 53 it went back up to 100mm until 55. Then it went down to 80mm from 56 to 60. 61 and later was 70mm.
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Spanish Flea
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PostPosted: Tue Aug 24, 2010 10:26 am    Post subject: Reply with quote

Bruce wrote:
Spanish Flea wrote:
Fuel tank filling neck changed from 100 mm to 60 mm by chassis 1-0374199 on 29th of July 1952.

Then went to a 80 mm neck on 10th of March 1953, chassis 1-0454951.

No, in 53 it went back up to 100mm until 55. Then it went down to 80mm from 56 to 60. 61 and later was 70mm.



So in '53 it went to 100mm (hump back) tank. Right?

Spanish Flea
(i'll edit the above post.)
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dickie
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PostPosted: Tue Aug 24, 2010 8:55 pm    Post subject: big mouth gas tanks Reply with quote

I take that to mean the opening size changed, but the tank style itself remained the same. Then going to 80mm opening and the humpback style tank in 56. Yes? The pics are really helpful!
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Joshua B
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PostPosted: Tue Aug 24, 2010 9:23 pm    Post subject: Reply with quote

It went from 100mm to 60mm opening with the 100 style body (zwitter) then back to 100mm opening and then to the 80mm humpback.
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Spanish Flea
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PostPosted: Wed Aug 25, 2010 6:51 am    Post subject: Reply with quote

Joshua B wrote:
It went from 100mm to 60mm opening with the 100 style body (zwitter) then back to 100mm opening and then to the 80mm humpback.


Ok, so looking at the above pix, i don't see a difference between the Early VS. Late 100mm.

What am i missing? What is the detail to look for?

Spanish Flea
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Suboval
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PostPosted: Wed Aug 25, 2010 7:08 am    Post subject: Reply with quote

Spanish Flea wrote:
Joshua B wrote:
It went from 100mm to 60mm opening with the 100 style body (zwitter) then back to 100mm opening and then to the 80mm humpback.


Ok, so looking at the above pix, i don't see a difference between the Early VS. Late 100mm.

What am i missing? What is the detail to look for?

Spanish Flea


The later has a pressing (indentation) around the fill neck.
Image may have been reduced in size. Click image to view fullscreen.

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PostPosted: Wed Aug 25, 2010 10:28 am    Post subject: Reply with quote

Thanks SubOval. Very Happy learned something new today.

Good news is i have the correct small neck tank, wasn't worried about it but it was on my mind. Bad news, i just bought a late 100mm tank. Rolling Eyes But i got a good deal on it so i can flip it.

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PostPosted: Tue Aug 31, 2010 1:55 pm    Post subject: Reply with quote

What would the 60mm (zwitter) gas cap look like?

Spanish Flea
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Spanish Flea
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PostPosted: Wed Sep 01, 2010 11:21 am    Post subject: Reply with quote

Spanish Flea wrote:
What would the 60mm (zwitter) gas cap look like?

Spanish Flea


Starting to feel like a asked a stupid question.

I know the later tanks mid 60's + used a 60mm cap. Are they the same?

Spanish Flea
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Louis
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PostPosted: Wed Sep 01, 2010 12:31 pm    Post subject: Reply with quote

is the 54 55 gaz tank picture came with those dent? i am asking because mine has the same wavy front and the car never was accidented so i am wondering if that should be flat or wavy?


cheers
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