[xk] FW: Carburettor diaphragms

XK
1

Listers Has anyone been experiencing diaphram failures with Su carbs I
have just replaced three diaphrams in HD8 carbs The fuel or something in it
has caused the rubber to perish and soften I have also had other rubber in
fuel systym parts fail This may be a problem peculiar to our part of the
world However new diaphrams are not available here at present I would
presume this would affect all cars and carb sizes David Longsdale may
know more would he please contact me off list Regards John Ledbrook and
Terry Hilton-----Original Message-----
From: john ledbrook [mailto:@ledo]
Sent: Tuesday, May 23, 2006 6:27 PM
To: xk@jag-lovers.org
Subject: Carburettor diaphragms

2

I’m trying to picture a diaphragm in a SU carburetter and I can’t come up
with anything.-----
Eat in measure and defy the doctor.(Scottish proverb)
Bruce Cunningham - Slainte Mhath

3

John and Terry,

Yes, certain fuels can affect the SU diaphragms. Modern American fuels are
known to affect modern diaphragms, and ‘normal’ modern fuels can affect old
diaphragms.

For other listers, diaphragms are found in HD type carburetters.

Regards,

David Lonsdale
Cirencester, UK
120FHC #681396

4

John:
I don’t know where you are located, but check the amount of ethanol in
the fuel you purchase. It will perish the soft bits in your carbs. Most
fellows have little or no familiarity with diaphragms as the only use of the
HD type SU was on the 150S and those are few and far between. Unless you’re
at the South Pole you should be able to buy diaphragms through the usual
suspects.
Regards
BB----- Original Message -----
From: “john ledbrook” johnledbrook@exemail.com.au
To: xk@jag-lovers.org
Sent: Tuesday, May 23, 2006 1:59 PM
Subject: [xk] FW: Carburettor diaphragms

-----Original Message-----
From: john ledbrook [mailto:johnledbrook@exemail.com.au]
Sent: Tuesday, May 23, 2006 6:27 PM
To: xk@jag-lovers.org
Subject: Carburettor diaphragms

Listers Has anyone been experiencing diaphram failures with Su carbs I
have just replaced three diaphrams in HD8 carbs The fuel or something in
it
has caused the rubber to perish and soften I have also had other rubber
in
fuel systym parts fail This may be a problem peculiar to our part of the
world However new diaphrams are not available here at present I would
presume this would affect all cars and carb sizes David Longsdale may
know more would he please contact me off list Regards John Ledbrook and
Terry Hilton

5

In reply to a message from BB sent Wed 24 May 2006:

Location? South Pole? Not quite but try the closest
continent to the north and just in case I don’t have the
relative distances correct, not South America and not Africa.

The .au is the clue.

Regards

Keith–
The original message included these comments:

I don't know where you are located, but check the amount of ethanol in

at the South Pole you should be able to buy diaphragms through the usual

–
Keith Bertenshaw
Rockaway, NJ, United States
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–
–Support Jag-lovers - Donate at http://www.jag-lovers.org/donate04.php –

6

Yes, that’s why I didn’t ref “North Pole”
BB----- Original Message -----
From: “KeithB” kiwibert@optonline.net
To: xk@jag-lovers.org
Sent: Tuesday, May 23, 2006 3:41 PM
Subject: Re: [xk] FW: Carburettor diaphragms

In reply to a message from BB sent Wed 24 May 2006:

Location? South Pole? Not quite but try the closest
continent to the north and just in case I don’t have the
relative distances correct, not South America and not Africa.

The .au is the clue.

Regards

Keith

The original message included these comments:

I don't know where you are located, but check the amount of ethanol

in

at the South Pole you should be able to buy diaphragms through the usual

–
Keith Bertenshaw
Rockaway, NJ, United States
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–
–Support Jag-lovers - Donate at http://www.jag-lovers.org/donate04.php –

7

Some Octane boosters will also turn rubber to gooo.

Pat H.-----Original Message-----
From: owner-xk@jag-lovers.org [mailto:owner-xk@jag-lovers.org] On Behalf Of
john ledbrook
Sent: Tuesday, May 23, 2006 5:00 PM
To: xk@jag-lovers.org
Subject: [xk] FW: Carburettor diaphragms

-----Original Message-----
From: john ledbrook [mailto:johnledbrook@exemail.com.au]
Sent: Tuesday, May 23, 2006 6:27 PM
To: xk@jag-lovers.org
Subject: Carburettor diaphragms

Listers Has anyone been experiencing diaphram failures with Su carbs I
have just replaced three diaphrams in HD8 carbs The fuel or something in it
has caused the rubber to perish and soften I have also had other rubber in
fuel systym parts fail This may be a problem peculiar to our part of the
world However new diaphrams are not available here at present I would
presume this would affect all cars and carb sizes David Longsdale may
know more would he please contact me off list Regards John Ledbrook and
Terry Hilton

8

Thanks to everyone for input into diaphragm problems, Have located another
source for kits, previous supplier awaiting delivery from U.S. Bruce, I am
in general direction of South Pole, from Down Under and the kits are for a
150s which I have owned since '69. The car had not been started for over a
year and I assume the u/l fuel left in the system had attacked the rubbers.
I hope I don’t have to go through that exercise again and thankful that
Terry Hilton happened to be visiting at the time. Regards to all, John
Ledbrook

9

http://cgi.ebay.com/ebaymotors/A-H-3000-Aston-Martin-Rolls-Royce-Jaguar-XKE-Carb-Jets_W0QQcmdZViewItemQQcategoryZ6763QQitemZ8067548183----- Original Message -----
From: “john ledbrook” johnledbrook@exemail.com.au
To: xk@jag-lovers.org
Sent: Thursday, May 25, 2006 3:54 AM
Subject: RE: [xk] FW: Carburettor diaphragms

Thanks to everyone for input into diaphragm problems, Have located another
source for kits, previous supplier awaiting delivery from U.S. Bruce, I am
in general direction of South Pole, from Down Under and the kits are for a
150s which I have owned since '69. The car had not been started for over a
year and I assume the u/l fuel left in the system had attacked the
rubbers.
I hope I don’t have to go through that exercise again and thankful that
Terry Hilton happened to be visiting at the time. Regards to all, John
Ledbrook