Forum Opinion Please, Weber 44 or 40 on stock 2.0 Options

[Derek Seymour]

Currently have 44's that were just rebuilt, my experience is that 44's are a little big, and you need at least 2200 cc's of displacement to fully utilize the throatsize.

What's your experience/advice/opinion?

[Mblizzard]

You will see lots of opinions on this. I went with 44s and they were too big until as it has been pointed out, I downsized the venturi's.

Many have more experience and likely have better advice but I would go with the 40s. They are a closer match to what your engine will need and going through the process of buying different venturi's, jets, mains, Emulsion Tubes...... and on can become expensive and a real headache.

The 40s comes stock with 28 Venturis and they were capable of giving my 2056 all it needed. You can go up to a 36 Venturi on the 40s but you will be hard pressed to ever need that. Note the 44s come with 36 Venturis so unless you plan on making it a "TOP END" performing motor you can get all you need from the 40s.

[porschetub]

You will see lots of opinions on this. I went with 44s and they were too big until as it has been pointed out, I downsized the venturi's.

Many have more experience and likely have better advice but I would go with the 40s. They are a closer match to what your engine will need and going through the process of buying different venturi's, jets, mains, Emulsion Tubes...... and on can become expensive and a real headache.

The 40s comes stock with 28 Venturis and they were capable of giving my 2056 all it needed. You can go up to a 36 Venturi on the 40s but you will be hard pressed to ever need that. Note the 44s come with 36 Venturis so unless you plan on making it a "TOP END" performing motor you can get all you need from the 40s.

Good info,running dcnv Webers on one of my 1.8 T4's ,the throttle response is excellent with 27mm venturies,I have another motor slowly going together and that will have 36mm Dellorto's with stock (from factory) 28mm vents.
When I did my Zeniths up I first tried 32mm from factory 27mm size ,it had a noticeable "hole" down low and not so smooth transition to mains,moved down to 30mm and hit the "sweet spot" ,was easier to tune also.