[xk] SU Carb Cleaning and Finishing

Mark Stephenson wrote:

Learn something every day!

Thanks, Pat.

Mark

----- Original Message -----
From: Pat deGennaro pdege@bellsouth.net
To: xk@jag-lovers.org
Sent: Sunday, August 29, 1999 6:39 PM
Subject: Re: [xk] SU Carb Cleaning and Finishing

No, no, no…

Stell wool will leave behind very small pieces of itself imbedded in the
metal. When moisture is present it will rust!!! I’ve done plenty of
aluminum fabricating for the marine environment and any bit of steel
causes
problems.

You should be able to find 4x bronze wool that will work just fine.

At 07:46 PM 8/29/99 , you wrote:

The key there is to not be too heavy on the buffer. I use a bench grinder
buffer wheel for the large areas and the dremel on the hard-to-reach
areas.
The carb body won’t polish up because it’s too rough, it will just end up
looking clean, The dashpot will shine up as bright as you like.

I haven’t tried this, but if it’s too shiny for you, perhaps a
veeeerrrrrrrry light brushing with some of the finest steel wool
available
might take off some of the sheen. Any thoughts, rest of the list?

“Mark 1” Mark Stephenson
1958 3.4 Litre Saloon
1984 XJ6 4.2L
1985 XJ6 VDP
Jaguar Club of Central Arizona (USA) Concours
web site at Internet Service Provider, TV & Phone | Sparklight

----- Original Message -----
From: Duncan120@aol.com
To: xk@jag-lovers.org
Sent: Sunday, August 29, 1999 2:12 PM
Subject: Re: [xk] SU Carb Cleaning and Finishing

In a message dated 8/29/99 3:54:31 PM Central Daylight Time,
XK120@aol.com
writes:

<< Although it looks impressive to polish everything, the only item
that
is
normally shined up is the dashpot. They are easily buffed. They can
be
buffed up to shine, but don’'t take them to a “chrome” finish. >>

Larry:

Sorry I didn’t make myself more clear. I would like that nice clean
look,
not
polished. Sort of like recently beaded. I tried using carb cleaner,
and
the
got clean, but they still have that “old die cast” look. Emphasis on
the
word
“old.”

Thanks

Ron

Pat '57 XK140SE OTS

Also, they make aluminum wool, but is hard to find, I like the scotch brite
pads, buffing compound and Met-All, an aircraft alum. polish, however there are
many other alum. polish types out there. One more note-DO NOT USE A lead pencil
to mark on aluminum-use a felt tip marker-lead pencil causes electrolysis
-Cheers :slight_smile: Rex

Well, it’s time to rebuild the carbs and I was wondering what is a good way
to get a nice sheen finish to the body, fuel bowls, and dashpots.
I am afraid to glass bead them because I think it must be impossible to get
them completely cleaned out. The glass would make a wonderful and effective
abrasive in the engine.
Any suggestions ?

Thanks

Ron

Ron,

Although it looks impressive to polish everything, the only item that is
normally shined up is the dashpot. They are easily buffed. They can be
buffed up to shine, but don’'t take them to a “chrome” finish.

Larry J

Ron;
Walnut shells work better for engine and transmission pieces…if
there is and residue they will not harm the internals.
As far as the carbs go, I think I’d be real reluctent to “blast” them
with anything…to many small orfices to catch the media and clog…the
best bet is something like “Barrymans” carb cleaner…( not the spray
can)…I have let carbs that I have done soak for about a week…once apon
a time the stuff would clean a carb in 15 min!!(before EPA)… It will
remove the varnish and other goo…then a lot of elbow grease to polish out
the rest…a dremal tool with the cotton buffs and an aluminum polishing
compound works well I’m told.----- Original Message -----
From: Duncan120@aol.com
To: xk@jag-lovers.org
Sent: Sunday, August 29, 1999 3:33 PM
Subject: [xk] SU Carb Cleaning and Finishing

Well, it’s time to rebuild the carbs and I was wondering what is a good
way
to get a nice sheen finish to the body, fuel bowls, and dashpots.
I am afraid to glass bead them because I think it must be impossible to
get
them completely cleaned out. The glass would make a wonderful and
effective
abrasive in the engine.
Any suggestions ?

Thanks

Ron

In a message dated 8/29/99 3:54:31 PM Central Daylight Time, XK120@aol.com
writes:

<< Although it looks impressive to polish everything, the only item that is
normally shined up is the dashpot. They are easily buffed. They can be
buffed up to shine, but don’'t take them to a “chrome” finish. >>

Larry:

Sorry I didn’t make myself more clear. I would like that nice clean look, not
polished. Sort of like recently beaded. I tried using carb cleaner, and the
got clean, but they still have that “old die cast” look. Emphasis on the word
“old.”

Thanks

Ron

The key there is to not be too heavy on the buffer. I use a bench grinder
buffer wheel for the large areas and the dremel on the hard-to-reach areas.
The carb body won’t polish up because it’s too rough, it will just end up
looking clean, The dashpot will shine up as bright as you like.

I haven’t tried this, but if it’s too shiny for you, perhaps a
veeeerrrrrrrry light brushing with some of the finest steel wool available
might take off some of the sheen. Any thoughts, rest of the list?

“Mark 1” Mark Stephenson
1958 3.4 Litre Saloon
1984 XJ6 4.2L
1985 XJ6 VDP
Jaguar Club of Central Arizona (USA) Concours
web site at Internet Service Provider, TV & Phone | Sparklight Original Message -----
From: Duncan120@aol.com
To: xk@jag-lovers.org
Sent: Sunday, August 29, 1999 2:12 PM
Subject: Re: [xk] SU Carb Cleaning and Finishing

In a message dated 8/29/99 3:54:31 PM Central Daylight Time, XK120@aol.com
writes:

<< Although it looks impressive to polish everything, the only item that
is
normally shined up is the dashpot. They are easily buffed. They can be
buffed up to shine, but don’'t take them to a “chrome” finish. >>

Larry:

Sorry I didn’t make myself more clear. I would like that nice clean look,
not
polished. Sort of like recently beaded. I tried using carb cleaner, and
the
got clean, but they still have that “old die cast” look. Emphasis on the
word
“old.”

Thanks

Ron

No, no, no…

Stell wool will leave behind very small pieces of itself imbedded in the
metal. When moisture is present it will rust!!! I’ve done plenty of
aluminum fabricating for the marine environment and any bit of steel causes
problems.

You should be able to find 4x bronze wool that will work just fine.

At 07:46 PM 8/29/99 , you wrote:

The key there is to not be too heavy on the buffer. I use a bench grinder
buffer wheel for the large areas and the dremel on the hard-to-reach areas.
The carb body won’t polish up because it’s too rough, it will just end up
looking clean, The dashpot will shine up as bright as you like.

I haven’t tried this, but if it’s too shiny for you, perhaps a
veeeerrrrrrrry light brushing with some of the finest steel wool available
might take off some of the sheen. Any thoughts, rest of the list?

“Mark 1” Mark Stephenson
1958 3.4 Litre Saloon
1984 XJ6 4.2L
1985 XJ6 VDP
Jaguar Club of Central Arizona (USA) Concours
web site at Internet Service Provider, TV & Phone | Sparklight

----- Original Message -----
From: Duncan120@aol.com
To: xk@jag-lovers.org
Sent: Sunday, August 29, 1999 2:12 PM
Subject: Re: [xk] SU Carb Cleaning and Finishing

In a message dated 8/29/99 3:54:31 PM Central Daylight Time, XK120@aol.com
writes:

<< Although it looks impressive to polish everything, the only item that
is
normally shined up is the dashpot. They are easily buffed. They can be
buffed up to shine, but don’'t take them to a “chrome” finish. >>

Larry:

Sorry I didn’t make myself more clear. I would like that nice clean look,
not
polished. Sort of like recently beaded. I tried using carb cleaner, and
the
got clean, but they still have that “old die cast” look. Emphasis on the
word
“old.”

Thanks

Ron

Pat '57 XK140SE OTS

Learn something every day!

Thanks, Pat.

Mark----- Original Message -----
From: Pat deGennaro pdege@bellsouth.net
To: xk@jag-lovers.org
Sent: Sunday, August 29, 1999 6:39 PM
Subject: Re: [xk] SU Carb Cleaning and Finishing

No, no, no…

Stell wool will leave behind very small pieces of itself imbedded in the
metal. When moisture is present it will rust!!! I’ve done plenty of
aluminum fabricating for the marine environment and any bit of steel
causes
problems.

You should be able to find 4x bronze wool that will work just fine.

At 07:46 PM 8/29/99 , you wrote:

The key there is to not be too heavy on the buffer. I use a bench grinder
buffer wheel for the large areas and the dremel on the hard-to-reach
areas.
The carb body won’t polish up because it’s too rough, it will just end up
looking clean, The dashpot will shine up as bright as you like.

I haven’t tried this, but if it’s too shiny for you, perhaps a
veeeerrrrrrrry light brushing with some of the finest steel wool
available
might take off some of the sheen. Any thoughts, rest of the list?

“Mark 1” Mark Stephenson
1958 3.4 Litre Saloon
1984 XJ6 4.2L
1985 XJ6 VDP
Jaguar Club of Central Arizona (USA) Concours
web site at Internet Service Provider, TV & Phone | Sparklight

----- Original Message -----
From: Duncan120@aol.com
To: xk@jag-lovers.org
Sent: Sunday, August 29, 1999 2:12 PM
Subject: Re: [xk] SU Carb Cleaning and Finishing

In a message dated 8/29/99 3:54:31 PM Central Daylight Time,
XK120@aol.com
writes:

<< Although it looks impressive to polish everything, the only item
that
is
normally shined up is the dashpot. They are easily buffed. They can
be
buffed up to shine, but don’'t take them to a “chrome” finish. >>

Larry:

Sorry I didn’t make myself more clear. I would like that nice clean
look,
not
polished. Sort of like recently beaded. I tried using carb cleaner,
and
the
got clean, but they still have that “old die cast” look. Emphasis on
the
word
“old.”

Thanks

Ron

Pat '57 XK140SE OTS

Ron,

This is an interesting topic. I have just had my carburettors rebuilt by
Burlen Fuel Systems. The bodies come back looking like new and I thought
this would be achieved by some sort of acid etching process. However they
said that they do this with a porcelain based medium.

Very many people like to have the dashpots (which they referred to as
suction chambers) polished. I asked them not to do mine but they did them
anyway. I question the authenticity of this. Although I agree its looks very
attractive, personally I have never seen a production car with SUs finished
in this way but my recollection of new XKs is sketchy. Perhaps someone on
the list, Urs maybe, might like to comment on the originality issue.

BTW, Burlens warned against any blasting process on the dashpot after the
pistons had been matched. They said that it is extremely difficult to be
sure that you have not left behind minute quantities of medium.

Eric C-----Original Message-----
From: Duncan120@aol.com Duncan120@aol.com
To: xk@jag-lovers.org xk@jag-lovers.org
Date: 29 August 1999 21:36
Subject: [xk] SU Carb Cleaning and Finishing

Well, it’s time to rebuild the carbs and I was wondering what is a good way
to get a nice sheen finish to the body, fuel bowls, and dashpots.
I am afraid to glass bead them because I think it must be impossible to get
them completely cleaned out. The glass would make a wonderful and effective
abrasive in the engine.
Any suggestions ?

Thanks

Ron

When the carbs on my car have been rebuilt over the last few years, they
have come back looking quite superb - I think the non polished bits were
lightly blasted with something and they have this new, uniform light grey
look. Maybe it was the walnut shells someone mentioned. How much time you
want to spend polishing the bells etc will govern how those parts look.
Regards, John Elmgreen