check valve behind pcv

[Fizz]

Originally Posted by myioz86

since i have found out there is no check valve in the manifold and have since put one in there the boost on my car has gone up about 1.5pounds and is pulling even harder than before.now all i have to do is build a 3" mid pipe with high flow cat and see if i can get some more "boost" out of this thing "ye haa".

Did you mean the manifold fitting that runs to the rear PCV? Or the fitting that goes to the brake booster?

Can you show a picture of how yours is set up?

[CK_Bladesmith]

Originally Posted by Fizz

Did you mean the manifold fitting that runs to the rear PCV? Or the fitting that goes to the brake booster?



Can you show a picture of how yours is set up?

On your sprintex setup it's gonna be like this: pcv line from the block goes to the catch can inlet, catch can outlet line then hooks to a check valve and then to the middle port on the back of the supercharger elbow.

[Fizz]

Originally Posted by CK_Bladesmith

On your sprintex setup it's gonna be like this: pcv line from the block goes to the catch can inlet, catch can outlet line then hooks to a check valve and then to the middle port on the back of the supercharger elbow.

Okie dokie

[PolishFrs13]

Originally Posted by CK_Bladesmith

On your sprintex setup it's gonna be like this: pcv line from the block goes to the catch can inlet, catch can outlet line then hooks to a check valve and then to the middle port on the back of the supercharger elbow.

Would this work the same way for a turbo charged ? same set up catch can from crank to inlet & outlet to port under the AC compressor


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[alexand3r]

For style: Boomba Check Valve

[myioz86]

On mine i put the 1/2" plastic ckeck valve between the manifold and the catch can that way you dont have boost getting into catch can and on the hose coming from under the aircon you dont need a chech valve .

[myioz86]

There is supposed to be a check valve on the brake booster line but i have not pulled it off and checked if i can suck air out of the manafold yet . will check on the weekend and see.sorry no photos.

[PolishFrs13]

I run the FBM catch can.. Gonna put a check cable on hose coming from under the manifold to catch can & see if it works


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[alexand3r]

What about putting a small air filter on the catch can and capping the manifold? Would there be any negative effects from this (maybe smell)?

[Rosticles]

Originally Posted by alexand3r

What about putting a small air filter on the catch can and capping the manifold? Would there be any negative effects from this (maybe smell)?

That is called a vent to air catch can. The main negative being that you don't get the vacuum pull on your pcv line, which helps flow and seals do their job.

[Sportsguy83]

Originally Posted by alexand3r

What about putting a small air filter on the catch can and capping the manifold? Would there be any negative effects from this (maybe smell)?

That's a VTA catch can. I run it like that and use the intake manifold port for vaccum/boost signal.

[PolishFrs13]

anyone know if this fixes the evap P0441? I receive my check valve tomorrow & will plug in hose from block to catch can (inlet) & one for outlet


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[myioz86]

Allready tryed caping the manifold but the engine dosent like it idle is up and down, when you decelarate throtal body closes and the engine needs air for idle so it sucks through manifold and out of crank,metered air.when accelarating check valve closes and the other port under air con is used for crank venting again metered air. dont think car likes having a open vented crank case as it muckes with computor and metered air in engine .

[Sportsguy83]

Originally Posted by myioz86

Allready tryed caping the manifold but the engine dosent like it idle is up and down, when you decelarate throtal body closes and the engine needs air for idle so it sucks through manifold and out of crank,metered air.when accelarating check valve closes and the other port under air con is used for crank venting again metered air. dont think car likes having a open vented crank case as it muckes with computor and metered air in engine .

I think there's a chance you didn't cap the manifold well and had a leak, as I have not had the PCV connected to the manifold for 12K+ miles with no issues.