breathers

[munkee]

I was trying to figure out where all the carbon in the intake on my 3.0 is coming from and I had originally thought that it was coming from the valve cover breather. I was working on installing a filter rather then running it to the TB, but closer inspection revealed a different problem. It doesn't look like that much gunk flows from the valve cover hose, the majority of it appears to come from a hose in the valley that comes out right next to the knock sensor and goes to the TB. (crankcase ventilator?). I suppose this isn't new news to most of you but has anyone rerouted that hose so it doesn't fill the intake up with oily carbon. Also, is there a good specific reason why it runs to the throttle body?

 

[fredhurderjr]

Both of those lines combine to form a PCV system By simply disconnecting them & throwing a breather on them, you don't get the pulling action & cycling of air through the system. I installed a transparent fuel filter on mine before I did the supercharger (which changed all the rules with those lines).

That's one of the things we do with our high-end 60k service - complete disassembly & degunk of the intake, butterflies, TB, etc.

 

[Shoman94]

fredhurderjr:
Both of those lines combine to form a PCV system By simply disconnecting them & throwing a breather on them, you don't get the pulling action & cycling of air through the system. I installed a transparent fuel filter on mine before I did the supercharger (which changed all the rules with those lines).

That's one of the things we do with our high-end 60k service - complete disassembly & degunk of the intake, butterflies, TB, etc.

Fred....So istalling that fuel filter does a good job for keeping the intake clean? Sounds like a good idea!! thumbs_u

 

[munkee]

I realize you probably can't get rid of all the carbon but I was hoping to get rid of some. My car has had maybe 1 of needed 3 60k's so the buildup might be a little more than normal. I never thought about an inline filter but that makes a little more sense. Could you explain a little more about what you used and where you put it? I got my tranny yesterday so I am working on putting every thing back together right now. Any more info would be greatly appreciated. Thank you.

 

[fredhurderjr]

I used a transparent, approx. 3/4" to 1" dia. inline fuel filter, like you see on some hopped-up musclecars in the engine bay. I think I got mine at a local speed shop, for about $5 ea?

Example, on the cam cover line, I took the tubing, cut about 4" down from the TB, put the filter in, and hose-clamped it. It takes a while for the filter to build up, as the fumes mostly pass through. Use the transparent only so you can check it so it doesn't clog up (and build crankcase pressure).

 

[munkee]

Thanks, I will give that a try tomorrow.