Re: Swapping out Strombergs for SUs

["Charly Mitchel" <charly@mitchelplumbing.com>]

If you have the early TR4 Z-S carbs and look at them they sit real tall in the
area between the throat and the top of the suction chamber.  They also have a
funny choke on them, a flap that rises up in front of the bridge and raises
the piston a little and also blocks the airflow at the same time.  If held
next to a TR6 Z-S, the look about 25% larger, even though they are 1 3/4".  I
believe they we used on the very early TR4's and were switched to SU's later.
The floats can be hard if not impossible to find.
Charly
TR6 #44
  ----- Original Message -----
  From: N197TR4@cs.com
  To: charly@mitchelplumbing.com ; KLynch7589@aol.com ; hottr6@hotmail.com ;
fot@autox.team.net
  Sent: Thursday, December 22, 2005 7:17 AM
  Subject: Re: Swapping out Strombergs for SUs


  I think the early TR4/TR4A Z-S would be a candidate for conversion on the
TR6. I like their simplicity.

  What is a Tall Chamber Z-S, Charly?

  Thanks.  Joe (A)

    I ran Z-S last year for about half the races and I can only say I had
lots
    of low end torque, but no top end.  I could hardly pull 6000 rpms.
    I was told the early Z-S off the TR4 work the best.  A fellow who has
bench
    flowed all the British carbs told me he had the best results with the
tall
    chambered Z-S.  I was tempted to try them on my car and never did.  I have
a
    set if someone is interested in them.
    Charly
    TR6 #44


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