dcoe guys- question about manifold vac

[2old_honda]

well my manifold is almost ready to put on the car, I just need to drill/tap holes for the vac adv, PCV, and brake booster. So I need some advice on the best way to do this. here is what I came up with. In that pic you can see that I tapped into each runner and joined all of them together, then I have the brake booster coming off one end and the PVC/vac adv. coming off of the other end. So will this work? Is there a better way that I could do this? thanks for your help!

[A20A1]

That looks good to me... How big was the tap?
I'm thinking if it's too big it one runner might interfere with the other runners?

[2old_honda]

I havent tapped anything yet, do you have a suggestion on what size it should be?

[A20A1]

around a 1/2" ID. Or make it a little larger then the brake booster hose from the manifold to the "T" and then the arms of the "T" use the same diameter hose as the brake booster.

The vacuum line for the dizzy is 5/32"

[doug]

My question is if the vacuum from the runner on the manifold is stronger than the vacumm the distributor got from the stock setup is that not going to throw off the advance in the distributor?

[Site]

Dude, that setup in your graphic looks just like mine

All the

I used 3/8 hose for everything. I've got some kind of reducer thingee that runs it to the vacuum advance on the ditributor

I'm sure you could go into all kinds of hellish detail to find out exactly what vacuum draw each item (brake booster, pcv, advance) should have in proportion to the total vacuum if you wanted. I just said, "Screw it, let's just start the car!"

:lol

[2old_honda]

Originally posted by Site
Dude, that setup in your graphic looks just like mine

All the

I used 3/8 hose for everything. I've got some kind of reducer thingee that runs it to the vacuum advance on the ditributor

I'm sure you could go into all kinds of hellish detail to find out exactly what vacuum draw each item (brake booster, pcv, advance) should have in proportion to the total vacuum if you wanted. I just said, "Screw it, let's just start the car!"

:lol

is yours all joined together like mine?