You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!
The power valve opens the second the throttle is on the floor(as soon as it reaches the rating on the valve), it only responds to manifold vacuum. Most setups will get way below the pv's opening point even at idle and full throttle. The pump shot covers the time period it takes for the fuel to accelerate through the carb's passages and out into the airstream. Since the fuel is denser than the air, any given volume of fuel has more inertia to overcome than a given volume of air, and moves more slowly. Pump tuning can be a REAL pia too, since you have to balance total volume with delivery rate and delivery volume vs throttle position. Trying to get those little hiccups and burbles out can be very, VERY frustrating. As for the power valve, it'll be most noticable if it's wrong at part throttle near the valve's rated vacuum. If it's too small then you may get a part throttle lean flat spot, or too big and you may get a part throttle bog from too much gas.
This ad is not displayed to registered or logged-in members. Register your free account today and become a member on Mustang Forums!
__________________
Who cares how much horsepower it has, all that matters is how fast it goes!
13.20's with 2.25-2.30 60's, 40+ year old suspension sucks!
Best trap 107.11mph, we'll see what the new intake/carb setup does.
12.80 at 110.5mph NHRA DA corrected
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. Ford® is a registered trademark of the Ford Motor Company
RE: carb???
