SCOOBY DOO
BASED CANADIAN PATRIOT!!
- Joined
- Feb 18, 2007
- Messages
- 3,940
Vacuum conversion here...zero issues...stopped on a dime.
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SignUp Now!Shouldn't be like that. Something isn't quite right. Mine works well, just won't hold much boost at starting line.I'd be leery of a vacuum conversion. If the last owner hadn't done it I would have gone hydroboost. My vac brakes wont lock up the tires on an emergency stop. Not even close. Almost hit a car because they pulled out in front of me. Both feet on the pedal and it hit the pedal stop. Yes all the valves are working, yes i've bleed the brakes, yes it has the proper vac pedal, and yes the rear drums are adjusted properly. Just not enough stopping power in my opinion. There's also a huge "dead spot" in the pedal. It moves like maybe 2 inches before actually doing anything. My old 87 with the PM didn't have that problem.
Maybe I should go the hydro boost route instead. Does the hydro boost cost more money? I know it works with the power steering system. I wonder what happens when the engine stalls. Do you still have some normal function braking ability like the vacuum system?I'd be leery of a vacuum conversion. If the last owner hadn't done it I would have gone hydroboost. My vac brakes wont lock up the tires on an emergency stop. Not even close. Almost hit a car because they pulled out in front of me. Both feet on the pedal and it hit the pedal stop. Yes all the valves are working, yes i've bleed the brakes, yes it has the proper vac pedal, and yes the rear drums are adjusted properly. Just not enough stopping power in my opinion. There's also a huge "dead spot" in the pedal. It moves like maybe 2 inches before actually doing anything. My old 87 with the PM didn't have that problem.
Maybe I’ll go through the system again.Shouldn't be like that. Something isn't quite right. Mine works well, just won't hold much boost at starting line.
Dash brake light comes off the proportioning/distribution block on the frame rail; drivers side near the trans I think.In either conversion system; how does the on dash brake light work? There must be something you need to plug into the system?
X2, never looked back. (I've had PM and HB on other cars)Vacuum conversion here...zero issues...stopped on a dime.
You've got something wrong going on with your brakes.I'd be leery of a vacuum conversion. If the last owner hadn't done it I would have gone hydroboost. My vac brakes wont lock up the tires on an emergency stop. Not even close. Almost hit a car because they pulled out in front of me. Both feet on the pedal and it hit the pedal stop. Yes all the valves are working, yes i've bleed the brakes, yes it has the proper vac pedal, and yes the rear drums are adjusted properly. Just not enough stopping power in my opinion. There's also a huge "dead spot" in the pedal. It moves like maybe 2 inches before actually doing anything. My old 87 with the PM didn't have that problem.
What should I check? I know it has a vacuum pedal. How do I check the master? I'm going to bleed the brakes and do a fluid flush this weekend.You've got something wrong going on with your brakes.
Vacuum brakes have hauled down millions of Regals (and other G-bodys) over the decades with no problem.
I can lock my front brakes up at the drop of a hat with a vacuum setup. And that's with a 215/220 roller cam and heavely ported heads with O/S valves.
I already made a list...What should I check? I know it has a vacuum pedal. How do I check the master? I'm going to bleed the brakes and do a fluid flush this weekend.
If you have enough vacuum in front of the turbo, you're intake is WAY to restrictive.Thanks. I forgot the light was hooked to the proportioning valve.
One last quick question. Why hook the vacuum to the vacuum lines that see boost? Why not plumb it to the intake before the turbo or use the elbow that hooks into the passenger side valve cover breather that most of us block off anyway?
Thanks everyone!