Edelbrock intake help ?

[MarkV8]

Please can someone explain what the hole arrowed in the pic below is for on the back of my new intake ?

Also as I'm starting from scratch with my engine install I have no idea where to plumb the heater pipes in ?

Thanks for any help.

Mark

 

[Mustang5L5]

That is where the PCV valve goes.

You are missing the screen, grommet and actual PVC valve and related vac lines.

You can either take them from your stock intake...or buy the parts (screen, grommet and valve) from a motorcraft distributor

 

[NIKwoaC]

You can either take them from your stock intake...or buy the parts (screen, grommet and valve) from a motorcraft distributor

I'm pretty sure you can even buy non-Motorcraft replacements at pretty much any auto parts store. It's a standard part(s), more or less.

It's likely that if the thread starter didn't know what it was, that the originals on his car have not been changed in a while and should probably not be reused.

 

[90lxcoupe]

Just plug that hole and run breathers on the valve covers. The stock PCV system will cause oil to be sucked into the intake

 

[NIKwoaC]

Just plug that hole and run breathers on the valve covers. The stock PCV system will cause oil to be sucked into the intake

If you do that, also eliminate the tube that goes from the oil filler neck to the throttle body and cap off the fittings.

 

[MarkV8]

Thanks for the replies

I'm starting from scratch with a bare block and need to figure out everything as I go along.

What would be the best breather system for a road car?

PCV in the intake ?

PCV in valve covers ?

Just breathers in the valve covers vented to atmosphere ?

Engine is in a European Ford Sierra 5 door, I think you call them Merkurs in the US ?

New intake just clears the hood.

Thanks

Mark

 

[NIKwoaC]

Haha, cool build. Keep us updated.

The pros of an open breather system is simplicity and clean looks. The cons is that they can sometimes drip oil, and the unburnt vapors they release is harmful to the environment. *tree hugger moment*

The PCV system is good, in that it pulls the vapors back into the engine and burns them off. It also acts as a somewhat constant vacuum to actively clear the vapors from the crankcase. An open breather just kind of lets it "seep" out as it is needed. The problem is that the stock Ford PCV system is really inadequate for a high performance build, and an unmaintained system can lead to slowly burning oil. A cheap solution is to add a secondary PCV valve location, such as the driver's side valve cover. The problem there is that you end up with a snake pit of vacuum lines.

NEVER mix a PCV system with an open breather system. This causes vacuum leaks. Common rookie mistake.

Here are a few good threads for PCV modification:

http://www.stangnet.com/mustang-forums/637524-putting-stop-oil-consumption-through-pcv-valve.html

http://www.stangnet.com/mustang-forums/642930-unmetered-air-through-oil-filler.html

http://www.stangnet.com/mustang-forums/620577-whos-using-air-oil-separator-supra-pcv-valve.html

 

[MarkV8]

Thanks for the info and links.

Looks like I might be better off running with maybe one valve on the intake and another on a valve cover as it's a 331 stroker ?

cheers

Mark

 

[95Vert383AOD]

I have no oil Control issues. I run the PCV straight to the upper intake plenum. Then i have each valve cover connected to a T fitting which connects to the intake pipe before the throttle body. I have zero problems evacuating gasses properly and 2 years later my valve covers are clean inside and so are the heads (no brown residue)

Chris