Pcv Valve Gommet Split. Rb25det

[Raven33]

Hi everyone,

I found a leak in the hose running from the PCV valve to the intake plenum, while trying to remove it to get it fixed/replaced I managed to split the grommet for the PCV valve - ended up having to remove the rocker cover to get it out.

Making a 5 minute job take almost an hour *sigh*.

So now I've got a cracked hose and no grommet for the PCV valve. I did however have one of those little air filters which by some spectacular fluke actually fits really well.

After taking the car for a drive and removing the filter I had to freeze it for 5 minutes just to get it back in.

I've read a lot of stuff about various catch can setups and seen some people have a setup that completely removes the PCV valve from the picture - and the subsequent caution of becoming pig food.

Now I know that having this little filter where it is; isn't legal - I'm not so worried about that as much as I am about this setup being less then ideal for crank case pressure - or something else that I haven't considered.

The car is running fine now, I didn't see anything wrong with oil pressure or temps - idle is smooth again and holding boost a lot better - I don't wanna do any damage just to save myself the work.

Would you run a mini air filter and block off the hose from the plenum instead of running a PCV valve/blocking it off completely?

I can get a pic of the engine bay if needed to show what I've done.

Tell me what you think peoples!

~Raven

[conan7772]

Hi everyone,

I found a leak in the hose running from the PCV valve to the intake plenum, while trying to remove it to get it fixed/replaced I managed to split the grommet for the PCV valve - ended up having to remove the rocker cover to get it out.

Making a 5 minute job take almost an hour *sigh*.

So now I've got a cracked hose and no grommet for the PCV valve. I did however have one of those little air filters which by some spectacular fluke actually fits really well.

After taking the car for a drive and removing the filter I had to freeze it for 5 minutes just to get it back in.

I've read a lot of stuff about various catch can setups and seen some people have a setup that completely removes the PCV valve from the picture - and the subsequent caution of becoming pig food.

Now I know that having this little filter where it is; isn't legal - I'm not so worried about that as much as I am about this setup being less then ideal for crank case pressure - or something else that I haven't considered.

The car is running fine now, I didn't see anything wrong with oil pressure or temps - idle is smooth again and holding boost a lot better - I don't wanna do any damage just to save myself the work.

Would you run a mini air filter and block off the hose from the plenum instead of running a PCV valve/blocking it off completely?

I can get a pic of the engine bay if needed to show what I've done.

Tell me what you think peoples!

~Raven

I believe the PCV is the culprit for spewing oil into the plenum whilst decellerating on a hard left hand turn.

RB's are notorious for this on the track.

I had a plume of smoke after turn 1 at Eastern crk big enough to blind the car behind me, never mind the oil all over the track.

Then oil dripped out my BOV for the next 6 weeks, which is mounted underneath just after my intercooler and up hill.

Proving to me the oil came from the plenum side.

I have N1 oil pump and no ext return though.

Even for 100 % street use, the engine will still vent sufficiently through the turbo.

[The Dan]

Just go to Repco and buy a new grommet. Have bought many before

[wlspn]

Yeah go to repco & get a ford falcon grommet. Same size...

[zoomzoom]

I've read a lot of stuff about various catch can setups and seen some people have a setup that completely removes the PCV valve from the picture - and the subsequent caution of becoming pig food.

Now I know that having this little filter where it is; isn't legal - I'm not so worried about that as much as I am about this setup being less then ideal for crank case pressure - or something else that I haven't considered.

In regards to the blocking of the Rocker cover to intake manifold PCV, is that illegal even if there is no venting to atmosphere?

[blind_elk]

Would you run a mini air filter and block off the hose from the plenum instead of running a PCV valve/blocking it off completely?

You are risking pulling un-metered air - through the filter, across the rockers and down to the inlet side of the turbo - into the air/fuel mix, causing a leaner than expected A/F. And lean A/F is asking for detonation.

[Raven33]

Just go to Repco and buy a new grommet. Have bought many before

Went to repco today, got another grommet - I asked them about 'S' bend hoses, they have nothing that comes even close to what I need, they did have those springs you can use to bend a straight hose without kinking it - again nothing even close to what I need, leaving nissan or wreckers (cringe).

I've put about 50k's on the car since I fitted this lil air filter and haven't noticed anything that would make me think I've been drawing in un-metered air, still worried I'm doing damage without knowing.

Zoomzoom, I'm not sure if there is a way to remove the PCV valve and connecting hose without it being illegal. Normally the idea is to vent the oily gases anywhere but into the intake - 'oil catch can' would be the key words, though if setup incorrectly can still lead to damage, defect or do nothing at all.

So I think I'll just goto the wreckers and try get another hose - might even be able to score a heat shield for my exhaust manifold.

Thanks for your input everyone.

~Raven

[The Dan]

Went to repco today, got another grommet - I asked them about 'S' bend hoses, they have nothing that comes even close to what I need, they did have those springs you can use to bend a straight hose without kinking it - again nothing even close to what I need, leaving nissan or wreckers (cringe).

I've put about 50k's on the car since I fitted this lil air filter and haven't noticed anything that would make me think I've been drawing in un-metered air, still worried I'm doing damage without knowing.

Zoomzoom, I'm not sure if there is a way to remove the PCV valve and connecting hose without it being illegal. Normally the idea is to vent the oily gases anywhere but into the intake - 'oil catch can' would be the key words, though if setup incorrectly can still lead to damage, defect or do nothing at all.

So I think I'll just goto the wreckers and try get another hose - might even be able to score a heat shield for my exhaust manifold.

Thanks for your input everyone.

~Raven

did you actually ring Nissan? or just assume it would be dear? $34.50 and in stock at the springwood store. I'd say it's a commonly sold part and $35 isn't something to cringe about

[Raven33]

haha nah I was more cringing at the idea of going to a wreckers and did infact call nissan and will be going to that very store this arvo or maybe tomorrow.

edit: getting the exhaust heat shield was the bonus of going to the wreckers

Edited October 6, 2010 by Raven33

[The Dan]

Yeah Springwood carry most of the stuff you need for your Skyline and even if not they can get it quickly from Japan.

I'll ring Joel and tell him you're coming if you want me to tee up some trade price love?

[The Dan]

Forget that, already done. Ask for Craig and tell him you're a mate of mine

[Raven33]

Forget that, already done. Ask for Craig and tell him you're a mate of mine

sweet as, you rock.

gonna have to leave it till tomorrow morning, but I'll be there for sure.

thanks man!!

~Raven