Hey guys with the big turbo setups on a lnf! What are yall doing to improve the ventilation system when you go big turbo. For some reason I'm smoking oil on my sky redline and Can't really seem to figure out what it is. I'm thinking because I have a TTR race intake manifold thats blocking the manifold PCV it may have something to do with that, but in another article I read that with a bigger turbo setup it shouldnt.

All I know is that with the Cobalt ss turbo setup with the s256, I never had this smoking oil problem with the ventilation setup.

Can anyone help me out with this issue? Thanks guys!

 

I'm going to guess Mr. Powell could be of some use here.

 

yes. I'm a little confused as to why this is happening now. Like I stated above, When I had the cobalt I had no problems. I just ordered a catch can and bam was good to go. Now I have a catch can and all this setup but still feel like I'm burning oil because the ventilation isnt correct. I doubt its the turbo because the turbo was just rebuilt 1,000 m,iles ago. turbo was primed with oil and all too.

I still believe its the ttr manifold. Because it has a complete block off to where the pcv in the manifold use to go.

 

i wanna stay posted to this thread too. i have had my 20g on for almost 3 weeks now. looks like my BOV is the culprit. when driving normal it's fine. under high boost of 20-25psi it blows PCV oil from the from the cp. there is oil in there because we didn't hook up the pcv lines correctly at first. i soften the BOV pressure and it helped alot. i turned a full turn this morning to see if it will stop completely. also you might try to put bigger fittings to help release some of the crank case pressure. i'm going to get powells system for sure.

 

See but thats just the thing. Why wouldn't I have had any of these problems when running a bigger turbo on the cobalt setup then? Do you have a TTR intake manifold? I'm really thinking that this is the problem with where I'm at right now because of the fact that the front pcv valve is doing nothing because it is completely blocked off because of the intake manifold.

When I had the setup on the cobalt, I had the stock intake manifold with the working fron pcv valve.

I currently do run a catch can with the factory intake pipe to valve cover check valve still in place.

 

If the pcv is blocked then there is your problem or the turbo could be cooked finally. The pcv needs to be open in the manifold not blocked. I had this issue when I built my sheet metal intake because I forgot the pcv was in there...blew tons of smoke at idle

 

PM armcclure. He has the PCV fix for your problem.

 

THIS Is one of the problems I have. It idles fine no smoke or anything but then all of a sudden a ton of burnt smoke will show. Then itll go completely normal sometimes as well. Itll smoke a little bit at WOT. But not too much. Its not constant either just random.

Thanks man. I'm assuming he has the PCV blocking issue figured out as well?

 

Yeah mine idled and drive fine too. Just blew smoke a lit sometimes...... Blocked off pcv is one issue. Are you seeing smoke when u let off after wot

 

Yup. Basically put a -6an bung in your intake manifold where the location of the port is in your head and run a hose back to your turbo intake. It acts as a one way flowing PCV system. But I believe arm runs a check valve of some sort in the line that he makes himself.

 

Why not buy the pcv cartridge for the TTR manifold. Then the pcv will operate just like stock. That is why we offer it. Plus if your on an aftermarket turbo without the drilled port in your turbo compressor, you are also altering the pcv system. There are 2 parts to it.

 

Yes and also even sometimes when im just coasting in gear as well

 

But that would be the setup for a k04 yes? Im on a 20g

 

I dont understand where the long hose your kit contains goes to after the check valve on a big turbo setup?

 

this is an oversimplification and not correct. Arm runs a seperator and yes check valve (s) may be needed depending on the configuration.

 

Ryansalazan you have a catch can on the fresh air intake hose? Thats the only valve cover check valve, and (sad to say) putting a catch can on the fresh air intake hose is a 100% exercise in futility and zero benefit to anything. Does zero.

First of all, please do an engine health check, a leak down best, or a compression test. We have to be sure ( I want to be 100% on this) that the engine health is good. I am sure it is, or hope so.

Then email me I will be happy to see if I can help you and with Arms upgrade fittings with my upgrade kit we can help you. The seperator does not go on the FAI. cheers john@powellraceparts.com.

 

Yes compression is excellent 150 across the board. And ok thank you.

 

Big turbo or not does not matter. If you want the stock operational pcv get the kit. It just makes the factory pcv system for the intake manifold fully functional again.

Long hose goes back into the intake manifold, just like the stock setup does. It comes with instructions and once installed again, your pcv system on the intake manifold will then work just like the factory GM system does.

 

You should do a leak down before a compression test because a motor will sometimes pass a compression test but fail a leakdown. Catch cans are usless on these motors. More times then none if your not running a ton of boost you will be lucky to get anything in there

Right now it sounds like you have the typical blocked off pcv issues

 

Ryanalazan I have encountered recently on two LNF that were in for decoking inlet valves ( through media blasting) defective pcv valves in the inlet manifold. You really should get a 20 dollar 7 led borescope and check the condition of your inlet valves; gor through the vacuum port.

These PCV valves appear to reach a certain point (as the engine cokes up and the port gets smaller and smaller) to have difficulty closing. Just another part of the puzzle.

150 even across the board is good. I find those numbers a little low but it doesnt matter we are not calibrating gauges, , even is good.

do you have a stock IM or one of these funky black things from aaron?

 

Matty the oil seperator is not useless. But a catch can on the FAI is. That mistake is simply not understanding the function of the PCV. Kinda like making a manifold that leaves it out

 

That's why I said to PM arm for details.......

 

I said catch can not air oil sperator . Ddm makes a catch can for the kappa and everyone I've seen is empty even after a year of being in the car. Separators truely work..... Catch cans don't unless the pcv system really sucks like a neon set4

 

I think you it is time that you should include that pcv kit with every manifold you sell free of charge or included in the price of the manifold. Especially the afterthought of the design in the first place and it was discussed in length the negative effect to one's engine. That would be the right thing to do.
I spent time and effort to make your manifold to work properly with the help of John Powell and others on this forum. I have no beef with you.. Just saying..

 

Truth. I ran a Moroso catch can for about a month (and yes I connected it the correct way) and when I opened it is was bone dry and even smelled brand new. That's when I knew it was time for the Powell PCV oil separator