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Re: Carbs for Vintage Racing TR250

To: charly@mitchelplumbing.com, chuck.arnold@oracle.com, fot@Autox.Team.Net
Subject: Re: Carbs for Vintage Racing TR250
From: N197TR4@cs.com
Date: Wed, 19 Jan 2005 19:28:04 EST
I am running some Z-S (early Strombergs) Carbs that I have owned for over 30 
years. I love them. Simple, reliable, and SU needles will adapt. I cannot 
explain why others have had starvation problems and I have not.

I have run them for over 12 years on two race engines.

Joe (A) 


> Hey Chuck, I have the same problem.  I tried some SU HIF6's and they worked
> okay until something got caught in them.  I then went to Z-S carbs.  I took
> the temperature compensations and screwed them all the way down and reshaped
> the needles to a profile similar to a V12 E-type.  They ran okay but you're
> right about the difference from a set of Webers.
> I was told the very best carbs out there for air flow (what you really want
> as opposed to gas flow) are the early TR4 Z-S carbs.  They're funny looking
> and I think floats are hard to come by, but they flow much better on a flow
> bench then the others.
> I did fairly well with my early TR6 intake manifold by hogging it out and
> removing most of a baffle in the way of I think the #2 & 5 runners.
> I have a bunch of carbs I been playing around with and may not use them this
> year.  I'm trying to set up the PI on my 6, always an option for you to turn
> your car into a TR5.
> It seems to me the twin carbs gave you more low end torque and ran out of
> high power.  I haven't tried the early Z-S carbs yet, but might be the way
> to go.
> Charly

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