What rubber hose? It looks like the filter is directly attached to the blower.

 

Vk I want to see some pics, I am running a -6an fitting off my LT4 intake into a Oil/Air seperator and I needed a -6an bung welded onto my 4inch Elbow. Just wondering If I could weld something with this peice???
Have any pics, how close is the clearence from the headers???

 

No pics of it on the car, my car is without motor and tranny since the blower did a number on the stock bottom end

There is about ~2-3 inches of clearance from the headers, and maybe 2 inches from the steering arm.

The filter itself is a yellow "foam" and then it has a metal ring that holds it onto a yellow rubber hose which you hose clamp to the blower inlet. You actually have enough rubber hose between the blower inlet and the actual filter itself to drill a 1/2" hole to add a vent hose to. I have both valve covers venting to a oil can and then a line to the rubber hose of the blower air filter.

I'm still looking for a place to buy the air filter i used, as soon as i find it you'll know.

 

those heads are bad ***

 

well, i still can't find those air filters again. But if you do a search for mushroom air filters you'll get ones that are almost exactly like the one i got. One company called Ractive makes alot of them, but i can't find big enough ones.

The inlet of most Procharger blowers are 3.5", i used a 3.75" inlet filter, all the ones i'm finding are 3".. too small.

 

I actually tried mounting a mushroom filter on my car at the dyno, but it wouldn't fit with my LT headers. I'm still not 100% sold that it will give the proper ventalation that a large metal inlet tube will with a much larger filter. But if it works for you, then it should work for others.

 

It may not have more "suck" for a vent tube for the valve covers, but i bet it flows better then having any kind of metal inlet tube and then a filter.

Breathers on the valve covers should be good enough anyways... why would you need a large amount of vacuum?

 

actually inlet on the procharger is a 4"

 

Actually we are both kinda wrong and kinda right

The C series are 3.5", the P600b to F1 are 3.75" and the D1R and above models are 4".

 

Trust me when I say, you can never have "enough" ventalation. If you are running a D1SC or bigger style blower at more than 13#'s of boost, and only have ventalation throught the tiny breathers in your valve cover, they will be overloaded at trying to relieve the pressure. This can be bad. You need as much possible ventalation as you can figure out to use, as with running this much boost on a LT1 which will build up a considerable amount of pressure, which is not good for the motor at all without proper ventalation.

You are correct that it probably will flow better. But it is taking hot still air directly from off your header, while others with a inlet tube to a larger filter are getting it from the cool air from the ground that is blowing directly at the filter. If you have an intercooler or running something to cool your IAT's it will have to work harder to keep your temps down compared to the inlet tube. Just some other things to consider.

 

If your sitting still i believe your correct, it will suck its hot air from around the headers. But it sits a few inches below them, well low enough so that when your car is moving it would pickup the cold air flowing under the car, plus heat rises.

Sounds like you've got alot of blow-by issues if your having that kind of problem with needing massive amounts of venting. If you have an intake gasket leak, hole in your heads, or piston rings that are not sealing (try using gapless next time?) you will have major issues with blow-by.

Installing the vent tube into the "suck" side of the blower is recommended because it "draws" out the gases inside the engine crankcase, not to get all of the buildup out (blow-by). If your having issues with blow-by then venting to the atmosphere would work just as good as venting it into the blower.

 

I guess we might have to agree to disagree on this one . Everyone I have spoken with says you simply need as much as you can get to ventalate the crankcase pressure. True, the breathers on the valve covers will help, and probably even do the job if you are running 10#'s or less. However if you are running 15#'s + on a D1 or F1 application, or even a maxed out T-Trim setup, the small breathers on the valve covers simply won't be enough. Bottom line IMO, and the opinions of different speed shops, and tuners and people I have spoken to with this type of setup is, you want as much crank case ventalation as possible.

 

Well, I'll agree with you that getting as much crankcase ventilation as possible is a good idea

I've heard you can get an exhaust ventilation system for pretty cheap and that it works really well. I've considered this option, but probably won't act on it until a turbo kit is in the works

 

I have seen the exhaust ventilation setups as well. They do work well. I am only running about 16#'s of boost on my setup, and I have two large breathers on each valve cover, along with the ventalation to the inlet tube in front of the air filter. Unfortunatly, I did'nt have very long on this setup before I put it away for winter for the year . But from what I have seen, this should do it for me. Some guys running the F1 are using the exhaust ventalation setup though, and it works well for them.

 

having breathers and running the pipe into the intake is pointless...it needs to be a closed system so u can create vacume at wot.