I had been using the stock ZS carbs on my car for the first few years
I had it and they worked very well. The engine has about the same
mods that you describe for your car.
Since then I've experimented with several different carb setups on my
74 TR6, including a set of the weber downdrafts. I finally ended up
with a pair of 175 CD carbs from a TR4 and a custom linkage when I
stopped fooling around and settled back down to just driving the car.
I bought the webers used in very good shape and they ran well but
somewhat rich which I didn't try to adjust out. I don't recall any
particular problems with them, I was just into trying some different
setups. They are sitting in my garage along with two sets of weber
side drafts, a Good parts triple carb set up that I've never used and
some other oddities.
Any of the carbs, including the Z-S, should work well if they are in
good shape and properly set up.
Rob
74 TR6 daily driver
At 4:14 PM -0500 2/20/06, samuelsma@aol.com wrote:
>Listers:
>
>For those who don't remember, I have a very nice '76 with upgraded
>motor, suspension, interior, rust-free body and chassis, etc. Since
>I bought the car, however, it has had periods of running roughly
>related to carburetion (twin Z-Ss). I tinkered for a while and then
>had my service tech tune them, with good results for a week or so.
>Then they went off-song again, and he did some additional repairs
>and the car ran well for a few days. Now it is running rough again.
>He assured me that he can find the problem and repair it, but I
>asked a broader question: Is there a better carburetion system for
>this car in order to maximize reliability and tunability? I sold my
>'70 PI because I could never get it to run right and no one could
>fix the PI system. Now, I have a really special example of a TR6 in
>my favorite color and all my dream modifications, and I still can't
>get it to run right.
>
>Anyway, he has a lot of Weber experience and suggested a pair of
>DGVs (3236 model) from TRF as the absolute best solution to the
>problem. He explained that he thinks that the Zenith Strombergs can
>be rebuilt with reasonable reliability, but that they will always be
>subject to coming out of tune and that they won't ever earn my
>confidence the way the Webers would. I requested a level of
>reliability that would allow me to take the car on a trip of a few
>days without having to make carb adjustments or worse. The
>reliabiliity of the rest of the car is easily at this level.
>
>With that lengthy preamble, what is the opinion of the list members
>on a Weber DGV conversion? The motor has an upgraded cam, 9.5 to 1
>compression, port work, headers, electronic ignition, and makes
>about 145 hp at the flywheel.
>
>Thanks in advance.
>
>Michael
>CF 57044U
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