Once I saw the small runners were on my 1980, I was positive it was done for
emissions reasons as well. And it can work well at low rpm's. Wouldn't
surprise me if the later 1500's have a bit more power at the extremely low rpm
range as a result. Don't know that I really need more idling horsepower, but I
guess I could brag about it.
It's true many fuel injected cars use a log type manifold. But those manifolds
have long individual runners, which work well at street car rpms, and aren't
carrying liquid fuel. Just by eyeball, the short little runners the Spitfire
has probably wouldn't work right below 7000 rpm. And the gasoline dropout rate
on a log manifold... Not the manifold design I'd have used to get through EPA
certifications for importation.
Don't have anything to argue with you for or against the larger carburetor. I
just don't know which would be more bang for the buck. Is nice to know that
there is a larger runner manifold out there with the same outward appearance
though. If I ever find myself needing that for some reason, I now know of a
double stealth power boost, CD 175 and the large runner manifold. Hehehe...
Where's my nitros bottle?
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