Dave those generally increase HP, helps with the ring seal.
Engine Dyno went great
- Thread starter BRYAN FUGATE
- Start date
Yup, but they don't run for free.....soealcheek put on instead of ..of. Hp draw of the pump is what I meant.
Didn't calculate HP draw. HP increase was in the 20 HP range with the pump engaged. Saw it with these two eyes, 20 HP gain one pull to the next. Very impressed.
I found this info,
How many horsepower does it take to run a vacuum pump?
Once a vacuum pump is broken in, they turn very freely. It's a function of how well sealed the engine is, more horsepower is required on a tightly sealed engine. It's similar to a shop vac, when you put your hand over the hose you can hear the motor load down as it draws a vacuum inside the line. With the GZ Motorsports Pro pump on a bench mount with a 3/4 horsepower electrical motor, I can stall the motor with anything more than 23" of vacuum. So you can figure it takes about one horsepower to run, more or less, but the net gain is way ahead of the very small horsepower amount of horsepower it takes to run one of our pumps.
How many horsepower does it take to run a vacuum pump?
Once a vacuum pump is broken in, they turn very freely. It's a function of how well sealed the engine is, more horsepower is required on a tightly sealed engine. It's similar to a shop vac, when you put your hand over the hose you can hear the motor load down as it draws a vacuum inside the line. With the GZ Motorsports Pro pump on a bench mount with a 3/4 horsepower electrical motor, I can stall the motor with anything more than 23" of vacuum. So you can figure it takes about one horsepower to run, more or less, but the net gain is way ahead of the very small horsepower amount of horsepower it takes to run one of our pumps.
........................approx 30hp gain on my 540. CM did back to back testing, they work.
Not sure the draw but it made 20 hp more when we hooked the vacuum pump up
