Block pcv after catch can install

[djr81]

Sorry to go off topic but can anyone confirm the pcv thread size and type?

[KiwiRS4T]

1 hour ago, djr81 said:

Sorry to go off topic but can anyone confirm the pcv thread size and type?

http://www.kudosmotorsports.com/catalog/valve-suit-nissan-200sx-skyline-gts25-rb25de-sr20det-p-1479.html

[djr81]

16 minutes ago, KiwiRS4T said:

http://www.kudosmotorsports.com/catalog/valve-suit-nissan-200sx-skyline-gts25-rb25de-sr20det-p-1479.html 



Ah, ok.  Was expecting it to be the same as the RB26 part.  Sorry.

http://www.kudosmotorsports.com/catalog/valve-suit-nissan-skyline-rb26dett-p-2196.html

[The Bogan]

Reminiscing about RB's

 

I accidentally kinked a the head vents once to my can, lots, and I mean lots, of white smoke.

 

Maybe the motor is breathing that heavy that it is "pressurizing" the engine because the little outlet at the filter is causing a restriction, maybe, maybe not.

I would try and strip as much oil, via a good AOS system and plumb it back to the intake to "create a vacuum" senario thingamajig in the sump.

Plus "notracecar" so "notemmisionsdefect".

[drifter17a]

Little update:

 

i have 3 catch cans now as follow

 

one 3 port 60ml baffeled and filtered which has rocker going to it on input and output goes to another catch can which is 2 liters .

2 liters breath to air and it is not baffeled or filtered

 

third catch can is pcv in and out to manifold

 

smoke has stopped and car feels much stronger, touch wood

 

would you put wool wire in the 2 liter one to help with filtering?

 

no smell no nothing and well happy

[drifter17a]

I suppose the in and out doesn’t matter on catch cans that is not marked nor baffeled or filtered, right?

[KiwiRS4T]

9 hours ago, drifter17a said:

Little update:

 

i have 3 catch cans now as follow

 

one 3 port 60ml baffeled and filtered which has rocker going to it on input and output goes to another catch can which is 2 liters .

2 liters breath to air and it is not baffeled or filtered

 

third catch can is pcv in and out to manifold

 

smoke has stopped and car feels much stronger, touch wood

 

would you put wool wire in the 2 liter one to help with filtering?

 

no smell no nothing and well happy

Only if you use stainless as steel will disintegrate after a while.

If ports are not marked they are presumably all the same.

Its a pity the baffled and filtered on is so small as I would consider 2L a minimum size.

[Ben C34]

1 hour ago, KiwiRS4T said:

Only if you use stainless as steel will disintegrate after a while.

If ports are not marked they are presumably all the same.

Its a pity the baffled and filtered on is so small as I would consider 2L a minimum size.

I use the stainless coarse pot scourers. I wouldn't think rust would be an issue though as it is going to get coated in an oil mist.

[The Bogan]

Ive used stainless pot scourers.

Best stuff is fuel foam.

The main thing is to build it so you can service/clean it easy.

[drifter17a]

Touch wood nothing so far

 

the pipe that came with moshimoto was cheap as it looked like a water hose and after little drive it heated up and car was smoking like hell

 

i was so annoyed until i realised that was the culprit

 

put a stainless steel braided and good now

 

only issue is the pcv valve is not fully inside the rubber gourmet and if hose is pulled or moved it moves out a little bit and that too me creates boost leak under boost as boost from manifold escaps

 

can i put black silicon on it?

[Ben C34]

3 hours ago, drifter17a said:

only issue is the pcv valve is not fully inside the rubber gourmet 

3 hours ago, drifter17a said:

 

You buy a new grommet. They are the same as many other cars, take yours to a car parts shop of your choice.

[drifter17a]

Fitted and seems to be ok now

 

one question though, i seem to be going from high to low on dip stick every 200 miles or even less so burning around 200 ml 

 

is that normal?

 

no smoke or minimal though

[Slap]

Seems a bit excessive to me.
Any oil leaks?

Only 2 ways it disapeers.

Burning (multiple cause possibilty) or leaked (seals , gaskets, filter)

Motors always burn some but when its usualy in excess can be from but not limited to ...oil passing the rings (wear , wrong gap, worn ringlands) , intake taking in oil (breather setup & pcv from blow by) , head gasket leak (doughtful) , turbo seals.

Personaly if it was 200ml per 1000miles id be thinking its fine but others may say different.

[drifter17a]

Will check the car over again as it is driving me nuts now

 

it seems whatever i do there is still either leak or burning

 

does faulty bov result in burning oil?

[Trex]

That much oil burning is not normal. You're at the point of throwing it away. Stop modding it.

 

Check intercooler for oil. Do a compression test. Check the whole engine for leaks.

[Trex]

2 hours ago, Slap said:

Seems a bit excessive to me.
Any oil leaks?

Only 2 ways it disapeers.

Burning (multiple cause possibilty) or leaked (seals , gaskets, filter)

Motors always burn some but when its usualy in excess can be from but not limited to ...oil passing the rings (wear , wrong gap, worn ringlands) , intake taking in oil (breather setup & pcv from blow by) , head gasket leak (doughtful) , turbo seals.

Personaly if it was 200ml per 1000miles id be thinking its fine but others may say different.

a bit excessive? 1ml of oil per 1mile of driving....

[blind_elk]

Apologies for getting into this thread so late.

Firstly, would everyone please stop referring to this device as a "catch can", it is an "oil-air separator".

Secondly, the apparent installation is a bit iffy. Surely a simpler method:

1. Remove hose running from Ex rocker cover down to the turbo.

2. Leave hose connecting In rocker cover to Ex rocker cover

3. New hose from Ex rocker to Separator

4. New hose from Separator to turbo.

5. Stuff steel wool in Separator to act as a "seed" for the oil vapour to condense onto.

No need for a third connection on the separator - block it off.

Simplesness

[KiwiRS4T]

1 hour ago, blind_elk said:

Apologies for getting into this thread so late.

Firstly, would everyone please stop referring to this device as a "catch can", it is an "oil-air separator".

Secondly, the apparent installation is a bit iffy. Surely a simpler method:

1. Remove hose running from Ex rocker cover down to the turbo.

2. Leave hose connecting In rocker cover to Ex rocker cover

3. New hose from Ex rocker to Separator

4. New hose from Separator to turbo.

5. Stuff steel wool in Separator to act as a "seed" for the oil vapour to condense onto.

No need for a third connection on the separator - block it off.

Simplesness

Its a catch can unless its some how baffled at least. Read all of the thread - you will find that the vast quantity of oil requires more than a simple solution in this case - otherwise you are just pouring oil into the turbo intake.

[drifter17a]

7 hours ago, blind_elk said:

Apologies for getting into this thread so late.

Firstly, would everyone please stop referring to this device as a "catch can", it is an "oil-air separator".

Secondly, the apparent installation is a bit iffy. Surely a simpler method:

1. Remove hose running from Ex rocker cover down to the turbo.

2. Leave hose connecting In rocker cover to Ex rocker cover

3. New hose from Ex rocker to Separator

4. New hose from Separator to turbo.

5. Stuff steel wool in Separator to act as a "seed" for the oil vapour to condense onto.

No need for a third connection on the separator - block it off.

Simplesness

thanks mate, i suppose in stage 4 you are refering to recirculating the vapor or oil into intake before turbo ?

mine is blowing to air so don't want any sh*t in my intake

 

only thing i have not checked is return on turbo, can leaking return line cause any blue smoke or crank pressure apart from obviously loosing oil as it returns ?

 

I am planning to change the gasket again in case that is the culprit as there is hardly any oil in catch can or intake pipe so can only think leaking oil from turbo, drain or sandwich plate ..

[KiwiRS4T]

Dunno if you have already done this but get your car up to 100 or so in third gear - downhill would be better but not necessary - and then take your foot off the gas for five to eight seconds and then floor  it. Do you get a cloud of smoke out the back and if so what colour is it?