Hydroboost or vacuum?

[lolo86GN]

I bought the vacuum kit from Kirban. My car is an '85. Can anyone tell me where I should pull for my vacuum source since the block they send does not work for the 85? Kirban wasn't any help when I called and asked.

T into the PCV line...

 

[lolo86GN]

I'm doing my vacuum conversion this weekend, does anyone have detailed pics of where I need to tie into the vacuum line? Do I need to get any vacuum check valves or anything else while I'm at it? I have the pedal, booster,master cylinder and a 5/16 tee fitting. Thanks!

If you have this then it looks like it's your check valve.... If you mean adding another check valve then I would say that i'm no expert but all the cars I've seen don't have anything but this on the line to the booster...

 

[Homie_Telefrag]

FWIW, I've put vaccum conversions on both my cars and love them! I've never driven a Buick with the Hydroboost brakes so I cant speak for them, but the cost for the units steered me clear of them. I've got 100 in both brake setups and they work amazingly

 

[dnoel]

Thanks for the responses and pic!

 

[LIVE4RDO]

Great info.

 

[dnoel]

Got most of it done, I'll get back on it tonight.

 

[dnoel]

Thanks for all the advice and help, the links and pics provided were very helpful. I took me about 5 hrs total with no power tools, bleed time included in the 5. Thanks again, my car now stops great!

 

[dnoel]

On to the next thing on the list!

 

[Chuck Leeper]

Some test #'s...
HB on a 55 Chevy.
11" ft discs/11 x 2.5 drums rear. 1 1/8" MC.
[Converted from vac brakes. 8" dual diaphram. Engine vac @15"]
Vac MAX psi w/ the seat back in "max load" = 700psi.
HB, and a "normal person" pedal pressure = 2100psi.
I also added an adj prop valve. Dialed it from near closed until the rear wheels lock, close 1/4 turn. This mofo will now STOP!

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