Jump to content
SAU Community

Recommended Posts

in a healthy engine hardly any oil should go into the intake

if its a stock unmodoified car then don't worry about it

if its a modded car with FMIC runnign 14psi then might be worth it just to keep an eye on blowby..

money can be better spent elsewhere for your situation

Link to comment
https://www.sau.com.au/forums/topic/136876-oil-catch-can/#findComment-2544813
Share on other sites

exactly..

as with most things to do with cars, most people don't know what they are doing or talking about

i'm the first to admit if i don't know what's going on but in this case i know that a catch can does pretty much SFA on a stock engine. hell even on mine which is mildly modified i have not had any oil ever in my catch can

Link to comment
https://www.sau.com.au/forums/topic/136876-oil-catch-can/#findComment-2547488
Share on other sites

Even on a stock engine it can be beneficial in some way to stop blowby from being injested...a stock engine thats tired can still have blowby...oil mist into the engine makes it more prone to detonation and we all know that thats not good...so yes...it does pay to be safe...that said...they are not absolutely necessary...

Edited by limpus
Link to comment
https://www.sau.com.au/forums/topic/136876-oil-catch-can/#findComment-2548482
Share on other sites

exactly..

as with most things to do with cars, most people don't know what they are doing or talking about

i'm the first to admit if i don't know what's going on but in this case i know that a catch can does pretty much SFA on a stock engine. hell even on mine which is mildly modified i have not had any oil ever in my catch can

So you've got one??? But your telling ppl to "do as I say not as I do!!!"....................lol

Link to comment
https://www.sau.com.au/forums/topic/136876-oil-catch-can/#findComment-2548498
Share on other sites

Even on a stock engine it can be beneficial in some way to stop blowby from being injested...a stock engine thats tired can still have blowby...oil mist into the engine makes it more prone to detonation and we all know that thats not good...so yes...it does pay to be safe...that said...they are not absolutely necessary...

Finally someone that knows what he's talking about. Also if you set it up right, ie use a baffle, it is quite beneficial.

Link to comment
https://www.sau.com.au/forums/topic/136876-oil-catch-can/#findComment-2548512
Share on other sites

So you've got one??? But your telling ppl to "do as I say not as I do!!!"....................lol

my engine is not stock and i'm running 14psi through a motor with 150,000kms on it

plus it has engine-bling factor which i also desired

if you re-read the first post, you will realise that this guy is under the impression that a catch can is a necessary modification for his car based on what his mate told him.. this is not the case which i have been trying to point out

of course if your motor is stuffed it doesn't matter what mods you have it will still be useful but not necessary - a rebuild will be necessary in that case

anyone disagree? havign a good discussion is great...

Link to comment
https://www.sau.com.au/forums/topic/136876-oil-catch-can/#findComment-2548940
Share on other sites

a catch can, does exactly as the name implies. it catches oil in the intake. if you have oil in the intake, something is wrong and you should focus your efforts and $$ on fixing that. using a catch can simply masks the problem and gives you the "oh its ok to have blowby, the catch can fixes that" type of attitude.

Link to comment
https://www.sau.com.au/forums/topic/136876-oil-catch-can/#findComment-2550615
Share on other sites

Theres so much bad advice on forums like these (not saying this is a bad forum for that) but most people offer advice on products they know nothing about or have heard whats been going on around the rumour mill.

To pass emissions most of the blowby is recirculated into the intake. Its that simple. This is not good for combustion efficiency nor and can lead to preignition.

However a catch can, which allows the the oil air vapour to separate, stores the oil and vents the air to atmosphere. On a wet sump system this is often routed from the top of the cam cover, while on a dry sump system it also comes from the scavenge lines / deaerator.

They arent neccessary no. But an engine with high blowby may bog down, ping and get poor economy. So in that case they would be advisable.

Hope this helps ya.

Link to comment
https://www.sau.com.au/forums/topic/136876-oil-catch-can/#findComment-2553513
Share on other sites

Theres so much bad advice on forums like these (not saying this is a bad forum for that) but most people offer advice on products they know nothing about or have heard whats been going on around the rumour mill.

To pass emissions most of the blowby is recirculated into the intake. Its that simple. This is not good for combustion efficiency nor and can lead to preignition.

However a catch can, which allows the the oil air vapour to separate, stores the oil and vents the air to atmosphere. On a wet sump system this is often routed from the top of the cam cover, while on a dry sump system it also comes from the scavenge lines / deaerator.

They arent neccessary no. But an engine with high blowby may bog down, ping and get poor economy. So in that case they would be advisable.

Hope this helps ya.

This is what I have found out and been told and did have one for awhile and found it to be good and I was happy with it and I did not have any trouble with the police about it either.

Link to comment
https://www.sau.com.au/forums/topic/136876-oil-catch-can/#findComment-2553527
Share on other sites

Just a quick question,

What do you guys use to baffle your catch cans??

Steel wool or something similar??

And I didn't think it was illegal if it's connected up properly, if you have one with the airfiler attatched instead of going to the intake it would be illegal???

Cheers

Josh

Link to comment
https://www.sau.com.au/forums/topic/136876-oil-catch-can/#findComment-2553590
Share on other sites

Just a quick question,

What do you guys use to baffle your catch cans??

Steel wool or something similar??

And I didn't think it was illegal if it's connected up properly, if you have one with the airfiler attatched instead of going to the intake it would be illegal???

Cheers

Josh

Depends really, steel wool could be used, or sheet metal baffles.

Link to comment
https://www.sau.com.au/forums/topic/136876-oil-catch-can/#findComment-2553712
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • Ok thanks..that was my second question if i can somehow bypass this even with Nistune(that is all i have right now...aparat from stock ECU. So with some aftemarket it can by "bypassed" or make it work?  I know there is Link or Haltech (mainly used). We have ECUmaster here so i will gather some info about it.
    • Yes. You will need to get the original boost sensor and wire it in. That is.... if you plan to use a stock ECU - even a Nistuned ECU. The Nissan ECU will not operate correctly without it connected. And yes, it will do annoying stuff like you are experiencing. You will almost certainly be better off with some aftermarket ECU, than trying to hunt down rare sensors.
    • Ok so ABS/TCS is "not" the problem. Yeah i know now about the ABS with Nistune(i told that to the Nistune guy) but iam not 100% why or why i dont have ABS. ABS cube is in the engine (always has been) but i had braked couple of times rly hard and brakes just locked and scream. Does all Skylines have ABS cube? That boost sensor https://www.sau.com.au/forums/topic/367633-wtb-r34-gtt-turbo-pressure-sensor-pics-inside/ Is this it? I need to ask but i have a picture of engine bay and i do not see that (100% is not in that place) If i do not have this the car can do what mine is?(cutting around 4000 rpm) Here is the pic of my engine bay(only one i have) BUT i think i dont have that cuz loom was used from my RB20DE NEO and i know (obviously) that it does not have boost control or any wire to that...) so maybe that is the problem? (i dont know for 100% if that car where the engine is from had that)...but i dont have the loom from that
    • I'm with you here. It's either loom has an issue, OR, injectors are not functioning properly. It could even be they're just constantly dribbling, hence the wet, but not firing.
    • Depending on how long the car sat it is very possible for injectors to be stuck open or closed, I'd get them cleaned and flow tested. Other than that, obviously when the loom changes and the car doesn't start any more....the loom is suspect so some tracing / comparing may be required
×
×
  • Create New...