[xk] Fuel Tank Detail

I’m installing my fuel tank after having it out to derust the
insides. Does anyone know if the XK120 fuel tank originally had
pads glued to the curved surface to protect the tank from rubbing
against the spare tire?

I think I’ve seen these on a few XK120s, but I wasn’t sure if they
were original.

Mike Balch–
'53 OTS
Des Moines, Iowa, United States
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In reply to a message from Mike Balch sent Wed 28 Dec 2011:

Mike,

My late XK120SE (1954) OTS had such pads.

By the time I tore the car down and noticed them in about 1990,
they were sort of like a black crumbling slag-like material that
probably was once an early fairly stiff foam rubber.

Karl–
The original message included these comments:

insides. Does anyone know if the XK120 fuel tank originally had
pads glued to the curved surface to protect the tank from rubbing
against the spare tire?


karl
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Mike B;
Yes, they are original… each approximately 4"x 6" (maybe 5" x 7") There
are (were) three of them, all centered along a left to right line, the
middle centered at the perigee of the curvature of the tank, the outer two
had approximately six inches of “space” between their inner edges and the
“outer” edges of the centered rubber pad.
My question is the composition of these rubber pads… Mine were black,
but by the time I removed mine from my DHC, the foam looked like it had been
BBQed with no sauce!!
Charles #677556.----- Original Message -----
From: “Mike Balch”

I’m installing my fuel tank after having it out to derust the
insides. Does anyone know if the XK120 fuel tank originally had
pads glued to the curved surface to protect the tank from rubbing
against the spare tire?

I think I’ve seen these on a few XK120s, but I wasn’t sure if they
were original.

Mike Balch

'53 OTS
Des Moines, Iowa, United States

Mine still has them and I have every reason to believe they are original to
the car. They are 4" x 6" x 1/2" thick and rather stiff black foam rubber.
They are located in the middle and at each end of the curved part of the
tank. The 6" dimension is vertical.
Also used on Mark V behind the battery incidentally.
Rob Reilly - 679187

In reply to a message from R_and_J_Reilly sent Wed 28 Dec 2011:

I did a little searching on werb and it appears that here are a
wide variety of suppliers of flexible plastic foam such as is used
to pack electronics that can be found in black color. I believe
that would be indistinguishible from what was used originally, and
you can probably buy it as sheets and cut your pieces.

I have in mind the stuff that is often encountered as glued up
assemblies to pack irregular shaped stuff in boxes, not the molded
rigid version.

Karl–
karl
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In reply to a message from karl sent Wed 28 Dec 2011:

Karl, Charles, and Rob,

Thanks for the information about the size and composition of these
pads. If anyone can post a picture of the pads, I would appreciate
it. I might as well try to duplicate this detail since I’m working
on that part of the car.

On a related matter, a few weeks back I inquired about obtaining a
piece of the red rubber fuel filler hose as originally supplied on
the XK120. I ended up purchasing a modern black fuel filler hose
from NAPA and spray painting it with brick red auto body primer. I
then clear coated over the red primer. It looks fantastic (even
though no one will ever see it).

Mike Balch–
'53 OTS
Des Moines, Iowa, United States
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In reply to a message from Mike Balch sent Wed 28 Dec 2011:

Hey guys… sorry to be a killjoy… again… yes these pads DO exist
and yes they are original…but they are NOT black… at least mine
arent…the sizes are probably pretty close…but they are a
disgusting mucus yellow…with one side having the appearance of a
removed cloth finish on it. Without further testing I will suggest
that they are a foam RUBBER … lets see what others have to
contribute… best wishes Godfrey–
godfrey
pender island bc, Canada
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In reply to a message from godfrey sent Wed 28 Dec 2011:

Godfrey,

I presume you are reporting on the appearance of the rubber in your
car now - at 60 years of age - not as new.

I have an alternative hypothesis; perhaps all of the observers are
correct rather than some one being right and the others wrong.

It is my understanding that the yellow you observe may well be
sulphur that was mixed with the natural rubber at the time of
formulation as a means of altering its physical properties such as
elasticity, but with time is now oxidizing and coming out of the
mixture to the surface.

Perhaps the reason some of us have observed a ‘‘blackish’’ color, and
you observe a yellow has to do with the different environments to
which the various cars have been exposed lo these many years.

BTW, Urs Vol 1 is silent in pictures and text on the pads we are
discussing, but his pictures are of a car under restorsation so the
pads might well not yet have been installed.

Karl–
The original message included these comments:

Hey guys… sorry to be a killjoy… again… yes these pads DO exist
and yes they are original…but they are NOT black… at least mine


karl
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I have several of the pads sitting on my work bench- removed from two
different tanks. One set is in fairly decent condition, the other set is very
“crumbly” if that is a word. I can use one set for the 120 I am currently
working on, but the ones for my longer term project 120 will need to be
replaced.
I will take photos and measurements for those interested. Indeed,
they are a pale, ugly color, appear to be foam rubber.
Bob McAnelly

Closer examination reveals that they are black on the outside but a light
brown foam inside, and the black has that cloth texture surface mentioned by
Godfrey. Its as if the black was a thin coating of plain rubber rolled on
with a cloth roller over the brown foam, maybe to seal it? Or they dunked it
in a vat of black rubber and dried it on a screen?
Karl, I know the black foam you mean, like a kitchen sponge, used to pack
delicate electronic parts for shipment. I would call this stuff stiffer than
that, more like a kid’s ball or the pads inside running shoes. Of course
maybe it was softer 60 years ago.
Mike, if you can’t find it locally, I would go to mcmaster.com where they
have an amazing amount of jag parts in unprocessed form.

Mine still has them and I have every reason to believe they are original to
the car. They are 4" x 6" x 1/2" thick and rather stiff black foam rubber.
They are located in the middle and at each end of the curved part of the
tank. The 6" dimension is vertical.
Also used on Mark V behind the battery incidentally.
Rob Reilly - 679187

Back in December there was discussion about padding used on the xk
120 fuel tanks. I have an xk140dhc and am refitting my tank, however
there is no evidence of padding. Nor is there reference in the Spare
Parts Catalogue or in Viart/Payne’s xk140 Explored to padding. Was
padding unique to the 120 or was it also used on the 140. Thanks in
advance for your help.On 28-Dec-11, at 9:15 PM, R_and_J_Reilly wrote:

Mine still has them and I have every reason to believe they are
original to the car. They are 4" x 6" x 1/2" thick and rather stiff
black foam rubber. They are located in the middle and at each end
of the curved part of the tank. The 6" dimension is vertical.
Also used on Mark V behind the battery incidentally.
Rob Reilly - 679187

In reply to a message from Brian O’Donoghue sent Sun 22 Jul 2012:

Brian
There were felt strips, maybe an inch wide, that were
between the top of tank and the bottom of the car where the
top of the tank rested.
Joel–
ex jag, '66 E-type S1 4.2, '56 XK140dhc, '97 XJ-6
Denison, TX, United States
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In reply to a message from ex jag sent Sun 22 Jul 2012:

I think Brian is asking about the foam blocks located inside the
semi-circular tank cutout that contact the spare tire surface when
in place, not the padding that is in the tank mounts.

Karl–
The original message included these comments:

There were felt strips, maybe an inch wide, that were
between the top of tank and the bottom of the car where the
top of the tank rested.


karl
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Thanks Karl. i am interested in the padding between the tank and the
spare tie compartment, and whether this existed for the 140 as well
as the 120. In terms of the felt mountings, Viart/Payne refer to 4
mounting felts 9’’,7’’ 18’’ and 44" for the fuel tank. The diagram in
the book is pretty clear but not sure where the 18" and 44" strips
go as the tank is 31" wide. Your help is appreciated, thanks.On 22-Jul-12, at 4:55 PM, karl wrote:

In reply to a message from ex jag sent Sun 22 Jul 2012:

I think Brian is asking about the foam blocks located inside the
semi-circular tank cutout that contact the spare tire surface when
in place, not the padding that is in the tank mounts.

Karl

The original message included these comments:

There were felt strips, maybe an inch wide, that were
between the top of tank and the bottom of the car where the
top of the tank rested.


karl
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–
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donate04.php –

Brian,

I have two immediate responses.
A. In XK140 EXPLORED if you have another look at PLATE 5-e2 you will see
that I have indeed fully detailed the four MOUNTING FELTS as glued onto the
XK140 Fuel Tank Assembly - and these four FELTS as drawn in place by Viart
are as detailed in the XK140 Spare Parts Catalogue.

B. However subsequent verification evidence that I always liked to
complete, but in this case was unable to conclude before the publication
deadline, I now maintain that the SPC detail and illustration of the FELTS
to be incorrect or at most, maybe only applicable to prototype XK140s, and
not production XK140s.

The correct four FELTS for a production XK140 are as follows:-

  1. 18" x 2" fits longitudinal over LHS top, and down front and rear
    reinforcing plates to mounting point.
  2. 18" x 2" fits longitudinal over RHS top with 2" diameter cut-out to
    clear fuel filler spout, and down front and rear reinforcing plates to
    mounting point.
  3. 27" x 2" fits transversely on top-rear angled face, between both
    longitudinal felts. There is a depressed locating area.
  4. 43" x 2" fits around full perimeter of spare-wheel recess “U” shaped
    seam, with top-edge butting up-to tank wall, over seam edge, and lower-edge
    into sloping surface of spare-wheel recess.

(All FELTS are 1/8" thick and is normal black automotive grade FELT that you
can still buy these days, although I was able to source for my own
restoration an improved material that although identical in appearance has
improved water resistance properties.)

You will also find that the four FELTS properly fitted as per above detail
actually now make sense as to their purpose/position, whereas the SPC layout
seems pointless.

If you cannot work out exactly how these above felts fit, I can send you
detailed photographs direct - as I cannot post them on XK-Lovers (and I
always seem to forget how to post them on JagLovers Album)

Can I also ASK anyone that purchased a copy of XK140 EXPLORED please pencil
a note on their Plate 5-e2 that the FELT detail and illustration is WRONG.
(I have circulated to many people an ERRATA listing I have prepared - but
this of course does not correct the illustration)

There are a couple other updates to this Plate also, that SHOULD appear in
the forthcoming REPRINT of this book where I have provided some 100+ ERRATA
corrections/clarifications, for example:-

  1. Very late XK140 had a GREY painted Fuel Tank, rather than the majority
    being BLACK as now noted.
  2. The two Hose Clamps were in fact C.824 GRIPTITE 25 up until mid 1956
    (after April but before Sept) when they were replaced with the SPC listed
    C.2908/7 CHENEY No.3 Clips.
  3. And I have also added a note that the BD.4368 Petrol Hose should in fact
    be a natural ORANGE colour and 2 inch Internal Diameter and the Plate
    illustration of the hose shaded Orange accordingly, rather than its current
    Black shading.

Roger Payne - XK140MC OTS; E-Type 4.2 S.1 OTS; DSV8.
Canberra.-----Original Message-----
From: owner-xk@jag-lovers.org [mailto:owner-xk@jag-lovers.org] On Behalf Of
Brian O’Donoghue
Sent: Monday, 23 July 2012 2:00 AM
To: xk@jag-lovers.org
Subject: Re: [xk] Fuel Tank Detail

Back in December there was discussion about padding used on the xk
120 fuel tanks. I have an xk140dhc and am refitting my tank, however
there is no evidence of padding. Nor is there reference in the Spare
Parts Catalogue or in Viart/Payne’s xk140 Explored to padding. Was
padding unique to the 120 or was it also used on the 140. Thanks in
advance for your help.
On 28-Dec-11, at 9:15 PM, R_and_J_Reilly wrote:

Mine still has them and I have every reason to believe they are
original to the car. They are 4" x 6" x 1/2" thick and rather stiff
black foam rubber. They are located in the middle and at each end
of the curved part of the tank. The 6" dimension is vertical.
Also used on Mark V behind the battery incidentally.
Rob Reilly - 679187

Roger, thank you, that clears it up for me. Would appreciate however
the picture of the fitting of #4, the 43" piece, I think I understand
how it fits however the picture would be useful. Thank you again.

  • not sure what I would do without your excellent book, I use it
    constantly!On 22-Jul-12, at 6:00 PM, Roger Payne wrote:

Brian,

I have two immediate responses.
A. In XK140 EXPLORED if you have another look at PLATE 5-e2 you
will see
that I have indeed fully detailed the four MOUNTING FELTS as glued
onto the
XK140 Fuel Tank Assembly - and these four FELTS as drawn in place
by Viart
are as detailed in the XK140 Spare Parts Catalogue.

B. However subsequent verification evidence that I always liked to
complete, but in this case was unable to conclude before the
publication
deadline, I now maintain that the SPC detail and illustration of
the FELTS
to be incorrect or at most, maybe only applicable to prototype
XK140s, and
not production XK140s.

The correct four FELTS for a production XK140 are as follows:-

  1. 18" x 2" fits longitudinal over LHS top, and down front and rear
    reinforcing plates to mounting point.
  2. 18" x 2" fits longitudinal over RHS top with 2" diameter cut-
    out to
    clear fuel filler spout, and down front and rear reinforcing plates to
    mounting point.
  3. 27" x 2" fits transversely on top-rear angled face, between both
    longitudinal felts. There is a depressed locating area.
  4. 43" x 2" fits around full perimeter of spare-wheel recess “U”
    shaped
    seam, with top-edge butting up-to tank wall, over seam edge, and
    lower-edge
    into sloping surface of spare-wheel recess.

(All FELTS are 1/8" thick and is normal black automotive grade FELT
that you
can still buy these days, although I was able to source for my own
restoration an improved material that although identical in
appearance has
improved water resistance properties.)

You will also find that the four FELTS properly fitted as per above
detail
actually now make sense as to their purpose/position, whereas the
SPC layout
seems pointless.

If you cannot work out exactly how these above felts fit, I can
send you
detailed photographs direct - as I cannot post them on XK-Lovers
(and I
always seem to forget how to post them on JagLovers Album)

Can I also ASK anyone that purchased a copy of XK140 EXPLORED
please pencil
a note on their Plate 5-e2 that the FELT detail and illustration is
WRONG.
(I have circulated to many people an ERRATA listing I have prepared

  • but
    this of course does not correct the illustration)

There are a couple other updates to this Plate also, that SHOULD
appear in
the forthcoming REPRINT of this book where I have provided some 100

  • ERRATA
    corrections/clarifications, for example:-
  1. Very late XK140 had a GREY painted Fuel Tank, rather than the
    majority
    being BLACK as now noted.
  2. The two Hose Clamps were in fact C.824 GRIPTITE 25 up until mid
    1956
    (after April but before Sept) when they were replaced with the SPC
    listed
    C.2908/7 CHENEY No.3 Clips.
  3. And I have also added a note that the BD.4368 Petrol Hose
    should in fact
    be a natural ORANGE colour and 2 inch Internal Diameter and the Plate
    illustration of the hose shaded Orange accordingly, rather than its
    current
    Black shading.

Roger Payne - XK140MC OTS; E-Type 4.2 S.1 OTS; DSV8.
Canberra.

-----Original Message-----
From: owner-xk@jag-lovers.org [mailto:owner-xk@jag-lovers.org] On
Behalf Of
Brian O’Donoghue
Sent: Monday, 23 July 2012 2:00 AM
To: xk@jag-lovers.org
Subject: Re: [xk] Fuel Tank Detail

Back in December there was discussion about padding used on the xk
120 fuel tanks. I have an xk140dhc and am refitting my tank, however
there is no evidence of padding. Nor is there reference in the Spare
Parts Catalogue or in Viart/Payne’s xk140 Explored to padding. Was
padding unique to the 120 or was it also used on the 140. Thanks in
advance for your help.
On 28-Dec-11, at 9:15 PM, R_and_J_Reilly wrote:

Mine still has them and I have every reason to believe they are
original to the car. They are 4" x 6" x 1/2" thick and rather stiff
black foam rubber. They are located in the middle and at each end
of the curved part of the tank. The 6" dimension is vertical.
Also used on Mark V behind the battery incidentally.
Rob Reilly - 679187

Brian,

The three foam “blocks” on the tank are the cushions for the spare tire
and these are glued to the curved cut out for the tire, they are vertical
as you view the spare cavity.

There are however felt like material strips about 2.5 inches wide that
are “glued” to the curved steel “nests” on the chassis to accept the top
of the tank. Other felt strips were sandwiched between the tank and the
bottom tank pan approximately above the “U” channel stiffeners and
running in the same direction. The ones I’ve encountered seemed to be
stuck to the tank and not the pan, however they were originally applied.

This “felt” was much like the old “foul weather” strip that was usually
chocolate brown and sold in 1 inch wide rolls. The car stuff was twice
as thick and more than twice as wide. Hope it helps,

Regards,

Rick____________________________________________________________
Mom Lazy Way to Look Young
Doctor Reveals Way to Look Significantly Younger in 17 Seconds
http://thirdpartyoffers.juno.com/TGL3141/500e199c81fe8199c5ec6st52vuc

Rick, thanks for your help. Roger Payne provided me with pics of the
location of the felt on the top of the tank and so I have that part
sorted out and your description of the location of the foam pieces
is clear. I don’t have the bottom tank pan that you mention, was
this standard on all 140dhc’s? I don’t see it in any of the
reference material I have (xk140 Explored, Spare Parts Catalogue,
Service Manual). Do you know where I would find a description and
fitting for this piece? Thanks again for your helpOn 23-Jul-12, at 11:42 PM, holland-rick@juno.com wrote:

Brian,

The three foam “blocks” on the tank are the cushions for the spare
tire
and these are glued to the curved cut out for the tire, they are
vertical
as you view the spare cavity.

There are however felt like material strips about 2.5 inches wide that
are “glued” to the curved steel “nests” on the chassis to accept
the top
of the tank. Other felt strips were sandwiched between the tank
and the
bottom tank pan approximately above the “U” channel stiffeners and
running in the same direction. The ones I’ve encountered seemed to be
stuck to the tank and not the pan, however they were originally
applied.

This “felt” was much like the old “foul weather” strip that was
usually
chocolate brown and sold in 1 inch wide rolls. The car stuff was
twice
as thick and more than twice as wide. Hope it helps,

Regards,

Rick


Mom Lazy Way to Look Young
Doctor Reveals Way to Look Significantly Younger in 17 Seconds
http://thirdpartyoffers.juno.com/TGL3141/500e199c81fe8199c5ec6st52vuc

Hello, I was hoping someone could help me with installing my fuel tank. This new tray I bought came without the hanger holes. Can someone tell me where the holes should be? Also, I am trying to come up with the right length of the hanging studs. When in place, does the tank press against this cross member? Lastly, What is the size of the studs? Thank you.

john


You have the hanger holes in the channels at about an inch from each end, they just didn’t drill them through the panel.
The hanger rods are 5/16" diameter and ANF (equivalent to UNF) thread, maybe about 10" at the front and 12" long at the rear.
The top end has a nut welded on, and double nuts on the bottom end. I’m not sure what the NN.231/L lock nut is, maybe mine are missing.
IMG_20210811_065947896

image