Boost a pump
Thread Starter
Instructor
Joined: Jan 2008
Posts: 159
Likes: 0
From: Yonkers New York
Boost a pump
I installed a Ken Belle boost a pump and it doesn't seem to be working correctly. Its supposed to start building voltage at 3.5 psi. At idle and slow cruising it is putting out 13.8 volts. The fuel pressure is anywhere between 61 and 67 psi. When first installed I was getting an a/f ratio of 10.5 off boost, and 9.5 on boost. We tuned the car (60# injectors) to get consistent 11.8, and next time I drove it your eyes would water if you stood behind it and it has no real power.
Does this seem right?
Does this seem right?
Instructor
Joined: Jan 2010
Posts: 117
Likes: 0
From: smackover arkansas
I think you might have some other issue's. I wouldn't think it would be a pump problem.
Thread Starter
Instructor
Joined: Jan 2008
Posts: 159
Likes: 0
From: Yonkers New York
I realize I need to tune it to the right a/f ratios, but there is a dail, from 0 to 50%. At max, (50% of 12 volts) it should supply 18 volts. KB doesn't provide any instructions on how to adjust, and I am questioning them on that, the only hint is under a mustang supercharger section they list 20-25% for 9# of boost.
They provide a 3.5# hobbs switch, so at idle, no boost, it shouldn't be up around 66-67psi.
They provide a 3.5# hobbs switch, so at idle, no boost, it shouldn't be up around 66-67psi.
Melting Slicks
Joined: Jul 2007
Posts: 2,939
Likes: 7
From: Simpsonville SC
St. Jude Donor '09-'10
Don't waste your money with a BAP. Just buy a higher volume fuel pump, or even a dual fuel pump, like the RSI system. The BAP will just overdrive the motor coils on the pump motor and cause it to fail sooner.
