[6pack] Tri carb set up

[Michael Porter]

On 5/14/2016 2:28 PM, Gene Holtzclaw via 6pack wrote:
> I still say study the numbers. Even a high performance TR engine can't 
> flow what two Stromberg's can handle.
>
>
This is quite true, on the numbers from the flow bench of just the 
carburetors and just the head.  I would say, however, that there's a 
small advantage in having each carburetor servicing two runners, instead 
of three, if only because the runners are straighter, and the pulses 
from each carb will be a bit sharper and better-defined with three 
carburetors instead of two.  Flow numbers aren't everything--they 
matter, but so do mixture distribution and mixture uniformity.  My guess 
is--because of the upper limits on flow of the head--there wouldn't be a 
great top-end power increase, but the low- and mid-range performance 
would probably improve some, and there would be slight torque 
improvement because patchy mixtures delivered to some cylinders would be 
reduced.

That said, the difference is going to be small, because of the port 
limitations of the cylinder head.  Is the improvement worth the money? 
That's probably subjective.  A hundred bucks a horsepower is pretty dear 
for the occasional driver.  For the NASCAR guy, it's a bargain.

Dyno comparisons on the same engine would probably tell the tale.


Cheers.

-- 


Michael Porter
Roswell, NM


Never let anyone drive you crazy when you know it's within walking distance....

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