[flatthump]

Originally Posted by STI-LOS

I will be getting Ebay anodized Oil caps and drilling holes in them and then advertising a 8-10HP Gain... I will be Rich Biotch......... no one take my idea or I will sue..

I get the whole idea of the pressure release but it seems like a waste of time, we only got interested in this cause the guy stated his car felt faster.. I just cant see that happening at all. I am not hating I am always up for new cheap mods. But you guys know what I mean

I don't see anybody getting an adequate power gain. I am doing it to keep the oil out of the intake. Oil lowers the effective octane rating of gas pretty badly. I guess relieveing some OCP will help with poer too. Not too much though.

[twiSTies]

not doing it on my car, but hey, if you want to run without a cap, go for it. you might also want to check out the turbonator.

[Justin B]

I hear running without a radiator cap helps reduce coolant temps by 20 degrees. Confirm/deny?

[flatthump]

Originally Posted by Justin B

I hear I have a habit of posting absolute non-sense in technical threads. Confirm/deny?

That is confirmed.

[fullerton]

roflcopter

[Szumita]

so if you have catch cans.......

[STI-LOS]

Originally Posted by flatthump

I don't see anybody getting an adequate power gain. I am doing it to keep the oil out of the intake. Oil lowers the effective octane rating of gas pretty badly. I guess relieveing some OCP will help with poer too. Not too much though.

^^^ Yeah that is what I was gonna say like I run the Crawford air / Oil sep is there a diff??

[grambo]

Originally Posted by STI-LOS

^^^ Yeah that is what I was gonna say like I run the Crawford air / Oil sep is there a diff??

The experiment will be when this "vented oil cap" is hooked into the same system of hoses as the aforementioned oil separator(s). The theory would be that the same "vacuum" drawing oil into your intake/intercooler lines would relieve minor amounts of crankcase pressure via the oil-fill tube.
I am waiting on results from flatthump. He knows his shi*. Datalogs and a few "dyno" runs should satisfy even the biggest critic. Or create 20 more pages of debate...LOL

KiTsu..get that mill going man!

Now, whos got a JDM vented oil cap?

[KiTsuNe]

does anyonow the thread of the radiator cap? I'll make one monday if i can get this dimension by then

[jph]

Originally Posted by KiTsuNe

does anyonow the thread of the radiator cap? I'll make one monday if i can get this dimension by then

take yours off and measure it


J.

[Howie STi]

Originally Posted by flatthump

Those are coolant lines buddy...

Dude, cmon, were not trying to achieve a vacuum in the damned crankcase. We, or rather me, want to hook it up to a vacuum SOURCE as to help scavenge positive crank pressure more rapidly.

it doesn't come off harsh at all. Just a little dumb.

This is the area that I'm talking about. If you look there is a vacuum hose going from the crankcase to the intake manifold.



Now what I don't understand is how "we" can get a vacuum in to the crankcase to releave the positive pressure sence the cars we drive will build boost. I don't see any other vacuum sorce other than the intake unless we install some other sorce.

That is all I was trying to say.

"Thank you STI-LOS for the image."

[STI-LOS]

Originally Posted by Howie STi

This is the area that I'm talking about. If you look there is a vacuum hose going from the crankcase to the intake manifold.



Now what I don't understand is how "we" can get a vacuum in to the crankcase to releave the positive pressure sence the cars we drive will build boost. I don't see any other vacuum sorce other than the intake unless we install some other sorce.

That is all I was trying to say.

"Thank you STI-LOS for the image."

I was like man this guy's engine bay is identical to mine....

[srt42sti]

that ls1 is most likely a turbo, with the stock pcv system in place a turbo ls1 will simply shoot the dipstick out underhood and blow oil everywhere, hence the air filter. subarus are a pcv system made for turbo cars.

[flatthump]

Originally Posted by Howie STi

This is the area that I'm talking about. If you look there is a vacuum hose going from the crankcase to the intake manifold.



Now what I don't understand is how "we" can get a vacuum in to the crankcase to releave the positive pressure sence the cars we drive will build boost. I don't see any other vacuum sorce other than the intake unless we install some other sorce.

That is all I was trying to say.

"Thank you STI-LOS for the image."

I can't tell what you're circling. But I think it's the PCV line? Yeah, that comes from the crank case.

Tapping into the oil cap just relieves even more pressure in the crank case.

Like I said before, Nobody is going to create a vacuum in a crankcase, not unless you're running a super intense vacuum pump. Again, The vacuum source is just to widen the pressure gradient which will allow more flow out of the crankcase.

[flatthump]

Originally Posted by grambo

The experiment will be when this "vented oil cap" is hooked into the same system of hoses as the aforementioned oil separator(s). The theory would be that the same "vacuum" drawing oil into your intake/intercooler lines would relieve minor amounts of crankcase pressure via the oil-fill tube.
I am waiting on results from flatthump. He knows his shi*. Datalogs and a few "dyno" runs should satisfy even the biggest critic. Or create 20 more pages of debate...LOL

KiTsu..get that mill going man!

Now, whos got a JDM vented oil cap?

Thanks Gram,

The OP really just gave me a good idea is all. I'm not looking to prove this will make more power. Anytime you take some oil vapor out of the intake charge you raise the octane of the gas and keep the inside of the intercooler dry. It may add a smidgen of power but what I'm interested in is the consistency of the intake charge (Yes, running a catchcan/Ao separater in between the PCV and valve cover lines is super adequate set-up. I just want to add the last brick is all)