PVC and brake booster plumbing, is this a bad setup?

[Custom/Ten]

Just read that pcv should have its own vacuum, is this a bad setup? All parts seem to function correctly but a haven't taken it out and given it h3ll. I just took it out for a couple lazy drives.

[Custom/Ten]

Wiring will be moved, I'm workin on that now.

[GASoline71]

It's the other way around... the booster should have it's own vacuum line so it gets full vacuum from either the intake manifold or the carb. The PCV can be T'd in to another vacuum source.

Gary

[Custom/Ten]

Where should the booster go? Here maybe if I can find a fitting for it?

[mgchevyparts]

Originally Posted by GASoline71

It's the other way around... the booster should have it's own vacuum line so it gets full vacuum from either the intake manifold or the carb. The PCV can be T'd in to another vacuum source.

Gary

Correct. you can have very small things connected with the booster but a PVC is not one of them. Things like tranny modulator, distributor vac advance are ok since they don't draw any flow away from the booster.

[geezer#99]

Originally Posted by Custom/Ten

Attachment 1259891Where should the booster go? Here maybe if I can find a fitting for it?

That will work. Look for this type of fitting in the size you need.
http://www.fastenal.com/web/products/details/69945

[Lattimer]

Last time I needed one the local NAPA had all of those fittings in stock.

[Custom/Ten]

Thanks everybody, ill take your advice and get that sorted out.

[Fitz]

Originally Posted by Custom/Ten

is this a bad setup? Attachment 1259886

Yes.

[Fitz]

Originally Posted by Custom/Ten

is this a bad setup? Attachment 1259886

Yes. Your booster needs full vacuum to support braking. The PCV connection lowers the vacuum pressure to levels where your brakes might not work at times when the engine vacuum normally falls.

[thelawdoc]

Fitz, when you say the brakes might not work, do you mean that the boost will not work, making the effort to brake be that of manual, non-assisted brakes? Or do you mean a complete failure of the brakes? I ask because it has been on my mind to be rid of my brake booster.

[88Ironduke]

The little check valve assembly is supposed to act a check valve for vacuum and hold the vacuum in the booster more or less at the highest point available. It is the surprise factor that Fitz is speaking of. The brakes will operate but if vacuum or is insufficient it will feel like manual brakes. The surprise will feel like you're trying to push a cinder block thru the floor boards when it should be smooth and nice. The port that is pictured is where I tapped from for my 250 as well, thinking 1/2 NPT"???

88Ironduke