booster vacuum question
Thread Starter
Racer
Joined: Jul 2009
Posts: 350
Likes: 7
From: springstead wi
Right or wrong . The trans has been hooked up like that for 30 years so far works fine . The gas lines have had fuel line hose for over 25 years but I change them out every 3 to 4 years ( but I am going to put in hard lines like you suggest , don't want to get one of I told you so from anyone ). Then you say add a 90 to the 90 that's there what does that do other then turn it . Now if you mean change it from one output there to two I can understand that all most . All it does is split it and will have no effect on the vacuum unless you mean to get the tees out of the booster line , split it and run the lights and trans off one side and the booster on the other side , but if the light or trans goes the booster won't work either . What I am probably going to do is is run the booster off the back of the carb by itself put the pcv , trans and lights on the intake with a catch can ( if I am pulling oil through it I would like to know how much ) . Interesting part will be to see if the trans shifts right and the lights work on the pcv line because its really not a closed system , think the pcv might goof things up . But I do appreciate your help (Really). Gave me things to think about .Have a wonderful day .
Race Director
Joined: Apr 2009
Posts: 19,294
Likes: 2,753
From: Charlotte NC
https://willcoxcorvette.com/catalogs...vacuum+fitting
Now if you mean change it from one output there to two I can understand that all most . All it does is split it and will have no effect on the vacuum unless you mean to get the tees out of the booster line , split it and run the lights and trans off one side and the booster on the other side , but if the light or trans goes the booster won't work either . What I am probably going to do is is run the booster off the back of the carb by itself put the pcv , trans and lights on the intake with a catch can ( if I am pulling oil through it I would like to know how much ) . Interesting part will be to see if the trans shifts right and the lights work on the pcv line because its really not a closed system , think the pcv might goof things up . But I do appreciate your help (Really). Gave me things to think about .Have a wonderful day .
The photo below is an intake fitting where you can see the large threaded area and that was for a 1970 Corvette where the brake booster vacuum line was attached to it using a steel line that attached to the large area.
DUB
Thread Starter
Racer
Joined: Jul 2009
Posts: 350
Likes: 7
From: springstead wi
Thanks I will try to get all that done , going to do fuel line first . Only question is and maybe I missed it is where do I connect the headlights ? I only have the two full vacuum ports in the back to work off of . Pcv to back of carb by itself Booster and trans to the fitting you show above .
Race Director
Joined: Apr 2009
Posts: 19,294
Likes: 2,753
From: Charlotte NC
The link I posted that send you to Willcox Corvette shows all the different type of these intake vacuum fitting you can buy.
The one photo I posted shows how GM had done it and is not meaning that you need to do it that way. You can contact Willcox and I am sure they sell this fitting along with the special steel line that attaches to that large port that you can use for you brakes and put the PCV at the back of the carb instead...the choice is yours on how you want to plumb it. If they seem to not understand how the fitting looks...send them to your thread so they can see the photo I posted. I got that photo off the internet and not from Willcox's website..
The headlights will get attached to one of the ports of the intake fitting you buy form Willcox. So...look at what they sell and go from there. The vacuum to your headlights will come off one of the ports of this fitting along with your transmission.
You may not need another 90 degree fitting and just be able to thread this new fitting in the fitting in your intake currently. I can not confirm this due to your last photo was not that good and had a lot of shadows so it was not clear on how it actually looks.
DUB
The one photo I posted shows how GM had done it and is not meaning that you need to do it that way. You can contact Willcox and I am sure they sell this fitting along with the special steel line that attaches to that large port that you can use for you brakes and put the PCV at the back of the carb instead...the choice is yours on how you want to plumb it. If they seem to not understand how the fitting looks...send them to your thread so they can see the photo I posted. I got that photo off the internet and not from Willcox's website..
The headlights will get attached to one of the ports of the intake fitting you buy form Willcox. So...look at what they sell and go from there. The vacuum to your headlights will come off one of the ports of this fitting along with your transmission.
You may not need another 90 degree fitting and just be able to thread this new fitting in the fitting in your intake currently. I can not confirm this due to your last photo was not that good and had a lot of shadows so it was not clear on how it actually looks.
DUB
Thread Starter
Racer
Joined: Jul 2009
Posts: 350
Likes: 7
From: springstead wi
Hate to admit stupid but this does fall into that category . Was going to call Wilcox and ask them , but figured I would go over it one more time . Looked up the instruction sheet on my carb it showed 3 ports on the side of carb I kept only finding two . This morning I went out and tried one more time . What happened was when I used the bigger diameter hose for the distributor it push up so hard to the next port that when I felt around for it I didn't feel it , but it was there . This morning I moved things around pcv by itself booster by it self . Now trans and headlights on the full vacuum port I found . Took it out everything seams to work , headlamps a little slow but they were like that before , brake pedal a little softer but doesn't seam to change the braking seams same as before , shifted fine .Feel I wasted some of your time but , but if it wasn't for you telling me what you did I would of probably just of lived with it so THANKS.
