Check with camcojb (Jody). He is a long time poster on here and NLOC. He has used these http://www.accmachtech.com/pcvcatchcans.htm on one of his race cars. Very knowledgeable guy. I believe he just sold his Kenne Bell Lightning recently, but still posts.

 

I understand your logic about getting oil to the blower but you are missing some key functioning pieces of the PCV system.

Putting a breather on the passenger side pretty much makes the PCV system null and void. If you are going to do that you might as well plug off the whole system and just run breathers only on the valve covers.

The upper plenum connection is where higher vacuum is and sucks crankcase gases into the intake. The factory system pulls fresh air into the crankcase from the intake boot into the drivers side valve cover and through the motors crankcase and out the passenger side valve cover and into the plenum. If you have a breather on the passenger side valve cover there is no crankcase circulation, just through that one passenger side valve cover and that's it.

If you are worried about oil in the intake run a seperator on the passenger side. The ones everybody are selling aren't perfect but they are better than having nothing at all. If you don't want a seperator and still want to eliminate the oil in the lower intake and intercooler, plug off the PCV system and run breathers only. That won't promote air flow through the crankcase but it will at least vent the gases and excess pressure.

If you believe that oil should be going into the blower for lubrication purposes then you should leave the system as it came from the factory.

 

I've taken the blower off of a 03 L with 26K that had a stock PCV and the rotors where completely flaked off and oil packed the intercooler making it pretty much usless..... Point is they are not related.

The "oil is put there by ford" theory to help lube the rotors is FALSE in so many ways.

https://www.f150online.com/forums/sh...ight=%2APCV%2A thread on 03 with 26K



P.S. SILVER2000SVT theres a man who can explain the PCV system





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I havent seen a post where someone has pulled a blower and intercooler to check to see if this oil prevention setup works.

People post and say "it works" ...... well run it for a month, then pull your blower and intercooler and take pictures to prove it.

 

There is a guy on NLOC that has been using the L&S unit on his high boost KBed Lightning and he did pull the blower after using it for quite a while. He said that there wasn't any oil in there at all.

 

Forgive my ignorance, but do you see a problem with changing the system as follows?

Plug the passenger side pcv, then install a breather on the oil filler. Get a working PCV valve, put it in the driver side and connect it to the upper plenum. Plug anything that is remaining.

This would cause flow through the crankcase, but if "pressure" would increase, then excess could backflow thru the breather. Obviously you can't build pressure without restricting the flow.

This would be no different from a NA setup on an old pushrod motor. The air was pulled from the crankcase thru the PCV and into the intake system. Air drawn into crankcase thru the oil filler cap which in stock form also had a hose connected to the air cleaner, providing filtered air to keep dirt out. If you wanted style you just put an after market filter/breather cap on in place of the stock one and then plugged intake connection.

My thought is to simplify the system but keep functional. I believe that pressure drops and increases in flow cause the air to carry more oil vapor into the system than it would if the velocities were reduced. One could could then install the oil seperator on the driver if they wanted.

What do you think? Anyone?

 

There's nothing wrong with this, and it's not a bad solution. Obviously you are introducing unmetered air and would need to compensate in the tune. But essentially all you did was reverse the factory system as far as which side you pull your vapor from and added just a little bit longer length of hose. The factory setup just uses the main air filter for the intake air and it is metered, you just changed this to a separate breather filter for the inlet and reversed the direction the air is flowing through the crankcase. Did you block up the hose running to the lower intake ? You could also Tee this into your line or the PCV port that you plugged without any ill effects. That lower intake hose does have a little bit of function. It serves to purge what little bit of oil collects below the intercooler back into the motor, or PCV lines. If you notice in the lower intake inside below the intercooler it has a tiny collection sump (in the back because that's where all the oil is going to go to when you get into the boost), and when it get's pressurized by boost it forces it out. But that's sort of the reason most owners want to change the setup to keep oil from getting in there in the first place. So you could run a seperator on your line from the drivers side valve cover and upper plenum, and have a pretty good system.

 

I have not modified anything yet. The idea of running a line from the lower intake back to the pass side PCV valve cover sounds like a good one.

I did not think about the unmetered air aspect. Would it be that difficult to tune around? Just fatten the A/F ratios? I will need a "tuner" to adjust for other variables in my swap project regardless.

This truck will be a DD and probably no racing, running stock boost for HD setup. Just want a few extra ponies under the hood, but at 18,000 on this motor I would rather not have as much oil crud on the IC as what I found. Looks like a lot oil passes thru judging from what was laying in the lower.

 

In my case it was related. 55,000 miles and no flaking rotors. 5,000 miles and the rotors are missing half of the coating after no oil in the blower. The evidence is substantial at this point.....You are wrong, in this case it is related.....thanks for the help anyway.

 

I seriously doubt that the flaking was due to oil not being on the rotors. The only parts of the S/C that need to be lubricated are the bearings which are sealed and grease and the snout gears that have a self contained oiling reservoir. The rotors don't make contact, which means they don't create friction, which means they do not require lubrication. The rotors on the Eaton flake because it is a cheap blower constructed of cheap parts.

 

If his crankcase is breathing properly then it sounds like this could be a set-up you could try. On the other hand, if I was spending alot of money on an engine build I would just eliminate the source of contaminated air whether it be oil laden or not from my combustion process.......Have you bought the KB yet ?

 

Interesting, How can I be wrong when the majority of trucks with eaton flaking rotors happen on trucks with factory PCV systems....... what do suspect is the cause for all the rotor flaking that occurs on these trucks that have stock PCV systems ??? I ask only because your flaking was undisputedly caused from your elimination of the PCV as you firmly stated.........

 

Mark, depends on your truck, you can tune around it but you might not need to...if you experiment around with your PCV system and make changes to it, you could always have your A/F checked afterwards.......

this thread concerns the subject.
https://www.f150online.com/forums/sh...ight=%2APCV%2A

 

Yeah my tuner ordered me one. It should be at his shop next week. I will go down and take some pics.

I think I will end up going with some kind of separator system. I have read and been told by a mechanic that if I delete the PCV and do the dual breathers that the blow-by will thin out the oil. I don't know if I want thinned out oil running through my $10K engine.

 

It comes down to how comfortable you are with oil in the intake.

You started this thread because you are concerned with oil in the intake on top of that 10K engine because you know crankcase oil has no place in your air/fuel burn process.... just good clean air and high octane fuel

Your mechanics right, (blow-by aka fuel) is present, but its present either way you go...... I suspect you'll change your oil frequently enough that it would be very difficult to measure the a difference between:
1. contaminates present in the oil at a 2K to 3K oil change interval with the crankcase ventilation supported by intake vacuum (PCV)
or
2. contaminates present in the oil at a 2K to 3K oil change interval with the crankcase contaminates released by breathers only.

You could run a vacuum pump and catch can and eliminate both concerns as camcojb did ...I think he ran both a catch can and a vacuum pump ?

One thing to consider is that we all increase the crankcase pressure by increasing HP on our motors and most do not increase the motors ability to breath leaving the PCV stock. Our high HP blown motors need to breath... With that said I bet many 10 second trucks perform just fine with stock PCV systems and show no ill effects from oil in the intake or lack of increased crankcase venting over stock........ Also who knows how many rod departing motors resulted in a burn that was leaned by oil.

MM runs a breather with a red rag tied around it on his 8 second Mustang...
pretty high tech and ugly but he's definitely a builder who promotes breathers ...

http://www.murillomotorsports.com/ho...php?section=26