HUGE problems in Cobra Land! F***, my new engine!

[69clark]

My thought of having a problem with the rings and blowby is that the boost would be pressurizing the crankcase, thus pushing oil out the pvc. I don't believe that the oil is pushing up past the rings, so this is why I wanted to do a leak down test.

Am I thinking correctly or am I backwards in my line of thinking?

 

[8950HO]

Like I said,look at the intake.
Others are having the same issue after installing that SSI intake.

This is where I would look first.

It`s probably some kind of crappy oil baffle design on the lower that`s the problem.

How else could so much oil get sucked up the PCV in such a short time?

 

[HISSIN50]

Are those numbers what you'd expect for wet values? I'd be assuming that was more of a wet than dry compression test.

More info on your exact crankcase ventillation set-up might help folks to help you.

Should you desire to do the leakdown test, here's an article by Tom Moss about makin a tester.

Good luck.

 

[69clark]

I hear you there and know I am seriously thinking that that is my problem. I don't recall a baffle during install other than the pcv screen that I transfered from my old intake.

So now the question is, for the time being what should I do. Should I just cap off the pcv until I have time to pull the intake? Will this hurt anything being that I am running a breather cap in the valve cover? Once I do take the intake off, if it doesn't have a baffle, what do I do.... make one?

I am starting to think I am going to buy a Hogan sheetmetal intake and finish off my combo the way I should have in the begining.

I also think I am going to talk to BBK! Thanks for the heads up 8950HO!

 

[69clark]

Hissin - What do you mean by wet or dry? I basically pulled the plugs, opened the TB, shut off the fuel pump, and unplugged the coil before I did the comp. test.

 

[HISSIN50]

Dont sweat my ramblings before. In re-reading your thread and given the issue and miles/time per amount of oil movement, my thought was kinda moot.

Ascertaining the baffle issue will be revealing IMHO. I've seen some work-around ideas over on the Corral where folks ditched the PCV. You're using a forced induction PCV valve (Supra, TC, etc) we'll assume. The breathers will work but you'll want decent flow (otherwise you could start blowing oil past your RMS, etc). Just be careful of the outlet - if open breathers are used, you dont want oil dumping under the car (traction concern).

And you are right about the pathway of oil loss.

I'd hope that with a fresh mill built for forced induction, those rings should be sealing like a mofo.

Good luck Tom.

 

[VibrantRedGT]

Even if the PCV was totally shot, that's too much oil in that little time. I would have to agree with 89SHO that there is problem with the way the lower vents oil.

 

[8950HO]

http://forums.stangnet.com/showpost.php?p=6373962

According to this,even BBK is no help.

 

[Bosko5.0]

if the bafflle is the issue then take it to a welding shop have em weld an alunimum plate over it over it them drill what ever size you want hole in it to, that should fix the enlarged opening, whats the oil pressure read

 

[BlueOvalStangGT]

Im going to have to go with the intake baffle too. The PCV cant suck up that much oil, its mostly oil vapor. Also the turbo coupe pcv wont do anything as the stock one works as a one way valve anyway.

 

[HISSIN50]

Blueoval, I'd add more info to that post - it kinda reads like a blanket statement. There are issues inherant with a stock PCV valve (like they sometimes dont actually seal decently, allowing boost into the crankcase).

Forced induction PCV valves (or a work-around the PCV) are used for a reason.

Tom, I'm sorry if I missed it, but what do you have to allow air back into the crankcase? This secondary line could be a source of oil contribution in the intake............

Good luck.

 

[69clark]

I am running a breater in the valve cover. I have run once since owning the car and never had any of the problems other guys have had on here with running one or poping the dipstick out or anything else. This oil issue has only started since the new intake.

I went to the parts store today. I think am going to run the pcv valve in one of the valve covers and plug the hole in the intake for the pcv valve. Do you think this will work until I get a chance to pull the intake?

 

[69clark]

8950HO- Thanks for that post. I haven't call bbk yet but maybe tommorrow. I guess it doesn't matter as this winter I think I have almost made up my mind to go with a Hogan sheetmetal intake or something comparable.

 

[Yobi1Kanobi]

Anything new in Cobra land?