Hello all,

Based on some issues I've been having, I want to hook up the passenger side valve cover to my TB. I was looking at everything last night, I'm not sure the best way to handle all of the vacuum fittings necessary for my car.

Here is how everything is plumbed now. How should I change this to accommodate what I need? I'm sure I can probably tee off one or more of these, but I'm not sure which one is best:

3/8" port on the TB - currently, I have a hose that circles the engine back to the charcoal canister. This was a relatively new addition to see if I could stop the vapor lock when trying to take the gas cap off. It seems to have worked, so I would rather not eliminate it completely. However, this is the port that I want to run directly to the passenger side valve cover.

1/2" port on the TB - not used. I was thinking of running the charcoal canister here, but 1/2" seems huge.

3/8" port on the bottom of the upper intake - PCV valve on the drivers side

3/8" port on the back of the upper intake - brake booster

Small port on the back of the upper intake - MAP sensor

Small port on the back of the upper intake - Fuel regulator

 

You don't state but assume you have a HSR?
Above is correct

Your IAT sensor can go in the other hole

 

No can do

3/8" port (# 8 ) is vac ( for canister purge )
1/2" port (# 7 ) has no vac and is the supply air to pass cover for PCV system
If you connect the TB 3/8" port to the pass side cover you have no PCV flow because you would have equal vac on both covers
as the PCV is connected to intake vac on drv side cover
If you connect the canister to 1/2" port you have no canister purge because no vac there to pull the fumes out of the canister

 

Sorry - yes, I have the HSR.

So actually, I want to hook up #7 to the passenger side cover. This is actually the easiest and requires the least amount of work...so that's good.

However, I went to three auto part stores yesterday and nobody has 1/2 hose. On top of that, I can find a ton of breather caps but the ones with ports are all 3/8". I tried finding a basic elbow, but the only one I can find (Dorman #47043) is 3/4".

 

Are you running the stock valve covers?

 

No - they are aftermarket. From Summit Racing, they are tall, perimeter bolt.

 

Can you find a thicker grommet?
I'd bet one is available.

 

First off, if you have a MAF system, you MUST MUST MUST MUST MUST connect the makeup-air side (the "other" side of the system) downstream of the MAF but (obviously) ahead of the throttles. Equally obviously, the PCV valve (suction) side of the system must have vacuum on it at all times.

Trick to finding a ˝" hose is, worst case, to sweet-talk em into letting you go back to the rack where all the pre-formed hoses are hanging; and go pick one out that you like.

You're on the right track, wanting to use the port you point out; all ya gotta do now, is locate a hose. Since you need 2 90° bends in it, should be a total piece o cake. All you need is, like 2 heater hoses off of some Subaru or something, and a chunk of something you can get at the hardware store in between. Maybe a coupla hose clamps somewhere along the line. Shouldn't be the least hint of a problem to find those things.