1989 Vacuum pump woes
#1
1989 Vacuum pump woes
The vacuum assist brakes have been progressively getting worse. It's so bad now that I'm getting virtually no assist. I attached a vacuum gauge to the vacuum pump and it it produces 8 inHg at idle and 12 inHg with throttle. As soon as I turn off the engine, vacuum drops to zero. When I blow into the vacuum pump, I can hear air leaking. Is this not normal?
What's my best option here? The second option is much less expensive because I already have all the parts except the electric vacuum pump which is relatively inexpensive.
Option 1
Convert to 2nd Gen Vane style vacuum/power steering pump?
Option 2
Buy electric vacuum pump from 03-04 Dodge cummins
Convert brakes to hydroboost
What's my best option here? The second option is much less expensive because I already have all the parts except the electric vacuum pump which is relatively inexpensive.
Option 1
Convert to 2nd Gen Vane style vacuum/power steering pump?
Option 2
Buy electric vacuum pump from 03-04 Dodge cummins
Convert brakes to hydroboost
#2
Unless you have a vane pump kicking around, or cheaply available, I'd go the hydroboost route.
I used to have a '95 f350 that I did a hydroboost swap on.... locking up 35's on a PSD crewcab was pretty sweet.
Edit: Another elec vac pump route is the 99+ superduty diesel. Haven't checked... might be cheaper?
I used to have a '95 f350 that I did a hydroboost swap on.... locking up 35's on a PSD crewcab was pretty sweet.
Edit: Another elec vac pump route is the 99+ superduty diesel. Haven't checked... might be cheaper?
Last edited by u2slow; 11-05-2015 at 01:36 AM.
#4