Vacum advance Q

mhjo

Founding Member

Nov 9, 2000

490

0

17

Oslo, Norway

Aug 2, 2009

#1

• Aug 2, 2009

• #1

I have got my old stang back. The other owner has only driven it some 20 h.
However, the car is slower than before, especially acceleration. Only mod he made in engine compartment was adding a vacuum driven powerbooster to the brakes.

My question is: does this "steal" vacuum from intake so that vacuum advance on distributor is lacking?

 

2

2+2GT

10 Year Member

Apr 25, 2009

3,333

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79

Southeastern Pennsylvania

Aug 2, 2009

#2

• Aug 2, 2009

• #2

The vacuum advance should be connected to the ported vacuum on the carburetor, which senses throttle position, not manifold vacuum.

 

mhjo

Founding Member

Nov 9, 2000

490

0

17

Oslo, Norway

Aug 3, 2009

#3

• Aug 3, 2009

• #3

Correction: The hose IS connected to the back of the carburetor

 

2

2+2GT

10 Year Member

Apr 25, 2009

3,333

10

79

Southeastern Pennsylvania

Aug 3, 2009

#4

• Aug 3, 2009

• #4

mhjo said:

Correction: The hose IS connected to the back of the carburetor

Click to expand...

OK, then you have confirmed it is connected wrong. The connection on the back of the carburetor is manifold vacuum. Ported vacuum is either on the front, or right side, depending on which carb you have.

And the vacuum booster does not "steal" vacuum, unless the booster is shredded internally there is no flow at all.

 

mhjo

Founding Member

Nov 9, 2000

490

0

17

Oslo, Norway

Aug 3, 2009

#5

• Aug 3, 2009

• #5

I will post a pic.

M