Every PCV valve I try leaks!!!

Discuss the RB20, RB25 and RB26 series engines.
bmadd2402
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Every PCV valve I try leaks!!!

Postby bmadd2402 » Sat May 03, 2008 11:35 am

Ok, does anyone have a good PN for a pcv valve for s1 rb25det? I have tried two, and when I do a boost leak test, I still get some leakage into the valve covers. I just tried two different ones that look like they would fit, which they did, but they stilll leaked air through, and yes they are installed correctly. Am I missing something?!?!?


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Kansei240sx
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Re: Every PCV valve I try leaks!!! (bmadd2402)

Postby Kansei240sx » Sat May 03, 2008 1:27 pm

Heres a good idea, get rid of it!

Thats the easiest way to solve that problem.

Run a hose from the right bank valve cover into the oil separator then to the intake and get rid of the PCV and block it off on the intake manifold.

Jegs has a badass oil separator. http://www.jegs.com/i/JEGS/555/52205/10002/-1

Darius
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Re: Every PCV valve I try leaks!!! (Kansei240sx)

Postby Darius » Sat May 03, 2008 3:01 pm

That things pretty cool. Only drawback is being able to see the loogies that collect in it

Also, what happens when the thing fills above the bottom of the plastic piece? Does it have a vent at the top that would still allow it to function without acting like it was plugged and pressurizing the crankcase?

240z4u
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Re: Every PCV valve I try leaks!!! (Darius)

Postby 240z4u » Sat May 03, 2008 6:08 pm

Guys, I had one of those on my air compressor. I got it at harbor freight I think.

Evan

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Kansei240sx
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Re: Every PCV valve I try leaks!!! (240z4u)

Postby Kansei240sx » Sat May 03, 2008 9:32 pm

Its got a screw at the bottom of it for a drain.

bmadd2402
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Re: Every PCV valve I try leaks!!! (Kansei240sx)

Postby bmadd2402 » Mon May 05, 2008 4:44 am

ok, but is it ok to not have any vacuum on the pcv system? I understood the positive in pcv to be that it actually "sucked" out the gasses in the crankcase via vacuum. will it be ok without the vacuum?

Darius
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Re: Every PCV valve I try leaks!!! (bmadd2402)

Postby Darius » Mon May 05, 2008 5:44 am

That is why you hook the other port on the catch tank to the intake ahead of the turbo. Pulls vacuum and you get an oil separator inline too.

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Neejay
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Re: Every PCV valve I try leaks!!! (Darius)

Postby Neejay » Tue Dec 23, 2008 11:28 am

Darius wrote:That is why you hook the other port on the catch tank to the intake ahead of the turbo. Pulls vacuum and you get an oil separator inline too.
The pics aren't up anymore.

ARe you saying (RB25):

pcv -> catch can -> intake port where valve cover hose normally goes to? Then block off the intake manifold port? What about the valve cover hose?

I wanted to have the pcv system filtered as well as the valve covers hose (that goes into the intake) filtered. How would I do that without having 2 catch cans?

imotion s14
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Re: Every PCV valve I try leaks!!! (bmadd2402)

Postby imotion s14 » Tue Dec 23, 2008 12:01 pm

bmadd2402 wrote:Ok, does anyone have a good PN for a pcv valve for s1 rb25det? I have tried two, and when I do a boost leak test, I still get some leakage into the valve covers. I just tried two different ones that look like they would fit, which they did, but they stilll leaked air through, and yes they are installed correctly. Am I missing something?!?!?
11810-75T00

you try replacing the insulator around it?

11812-41B00

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SullivanRacing06
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Re: Every PCV valve I try leaks!!! (bmadd2402)

Postby SullivanRacing06 » Tue Dec 23, 2008 12:09 pm

i ran both of my valve cover tubes to catch cans and vented the catch cans to the atmosphere, and yes all the crap that gets caught in thoes things are so nasty!

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Neejay
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Re: Every PCV valve I try leaks!!! (imotion s14)

Postby Neejay » Tue Dec 23, 2008 6:26 pm

imotion s14 wrote:
11810-75T00

you try replacing the insulator around it?

11812-41B00
S1 and S2 the same? Are you sure those are the part numbers? If so, I'll be buying one tomorrow!


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