.500” I/D annular boosters in 4150

[Right hand drive]

As per title how would .500” I/D annular boosters go in 4150 carbs, specifically 1.56” venturi?

From what I have investigated they have less signal to main well than .600” I/D but would this be of detriment in a street strip deal?

[rgalajda]

What/who's booster? Do you mean less signal than .600" I/D annular booster ?

[Right hand drive]

These





Already have some in a main body but haven’t tried them yet



Just curious and what to expect on how they would differ from .600” i/d annulars in a 4150 as I have only had the .600” before.

[rgalajda]

In general terms Yes. But could have a better signal than a down leg booster. As some guys on here like Mike/Mark may have stated before there is more to a booster in terms of signal than just size. Form/contour/shape number of holes. Proper atomization of fuel in a 1.56" venturi street carb , with no intake heat, is a concern.

[jmarkaudio]

.500 annulars will flow less and signal less than the .600's, but better signal than a downleg. I only used a .500 when the fuel channel was too small with the .600's, usually a boosted app and usually alcohols. I now have some .610's that will handle about 700HP worth of methanol, above that I have a .545 that will cover it. And there are some things you can do to improve that, cutting a channel inside the banjo will add more capability. A stock 4150 annular banjo has little room or strength to cut much, some of the newer billet components will add more.

[Right hand drive]

[jmarkaudio]

Fuel curve will depend on emulsion setup and main air bleed size. distribution will be better, if it needs it they may help.