Jim:
While you have been discussing SU problems, I have been questioning
whether to tell you about my recent experience with a pair of SU
carburetors.
Well, here goes.
My longtime friend had a non-Triumph car in his backyard for 15 years.
It was parked under a pair of pine trees, looking ugly, rusty and awful.
I hated to see it go to the crusher because there were only 16,000 of
these cars built. So, I called a tow truck and had it dragged over to
my place.
One day I wondered if it would star, so I hooked up the battery out of
my truck, cleaned the distributor cap and rotor; checked out the wiring
and found three real good wires and one so-so. Checked out the coil.
It was Ok. Then I removed the tops off the SU's. The pistons were
stuck. I sprayed them with oil and carburetor cleaner, and worked them
free. Then I washed the pistons and needles in fuel injector cleaner,
and got them so they would move up and down near freely. Next I hooked
up a lawnmower gas tank hanging from the hood. I gave each carb a shot
of spray ether, and turned the motor over--and it fired right up, and it
ran; and purred like a kitten.
If you are wondering, the car is a 1955 MG Magnette Sports Saloon which
has been fitted with a pair of 1 3/4" SU's probably from a TR3.
Ed Bratt
Regina, Saskatchewan
1976 TR6
On Sat, 2008-07-26 at 15:59 -0400, Jimandruthhome@aol.com wrote:
> Forgot to mention that the long spring inside the carb comes in different
> spring rates, which makes a difference also in how the carb performs.
> Basically the spring slows the rise of the piston, affecting air/fuel mix
>when
> staring from a dead stop and in other sudden demand situations. I've also
>heard
> of, though never felt the need myself, of folks shortening the spring to
> "custom tune."
>
> On my su's, with spring biased KN needles, the spring is yellow (the
> different rate springs are color coded).
>
> If you can get a copy of the Haynes SU carb manual, it explain the theory
> better than I. It also has a long list of needles with their dimensions and
> original applications.
>
> Also give Joe Curto a call. He is a pleasant and helpful guy and knows more
> about British carbs than anyone else I've ever met. His shop is in the
> Bronx, he advertises in the usual places.
>
> Jim
>
>
>
> **************Get fantasy football with free live scoring. Sign up for
> FanHouse Fantasy Football today.
> (http://www.fanhouse.com/fantasyaffair?ncid=aolspr00050000000020)
> _______________________________________________
>
> Support Team.Net http://www.team.net/donate.html
>
> 6pack@autox.team.net
> http://autox.team.net/mailman/listinfo/6pack
>
> http://www.team.net/archive
>
> You are subscribed as bratt@sasktel.net
_______________________________________________
Support Team.Net http://www.team.net/donate.html
6pack@autox.team.net
http://autox.team.net/mailman/listinfo/6pack
http://www.team.net/archive
|