Engine breather upgrade? Yes or no? Anyone done it?

[Farny]

For any of you with the 1.8L SVHO engine- have you done an engine breather upgrade? Thinking about doing this ->

 

[Farny]

Part 2 of this question - have any of you pulled off the breather hose and seen this in there? Can’t imagine this traveling to the supercharger can be good.

 

[FSH 210 Sport]

There’s at least one thread on here talking extensively about this.

This mod is supposed to eliminate oil residue and compressor / intercooler fouling. Looking at your picture of the hose it looks dry, is there oil residue in the breather line? If not then you don‘t have a problem that needs to be corrected.

If you are going to do this put a catch can in line on the crank case breather line. You don’t want to have the crank case breather just venting into the engine bay.

 

[Farny]

There’s at least one thread on here talking extensively about this.

This mod is supposed to eliminate oil residue and compressor / intercooler fouling. Looking at your picture of the hose it looks dry, is there oil residue in the breather line? If not then you don‘t have a problem that needs to be corrected.

If you are going to do this put a catch can in line on the crank case breather line. You don’t want to have the crank case breather just venting into the engine bay.

There is a foamy residue in the hose. This is why I am thinking about adding the breather filter on the end. Thanks for letting me know about the thread. Will check it out.

 

[FSH 210 Sport]

There is a foamy residue in the hose. This is why I am thinking about adding the breather filter on the end. Thanks for letting me know about the thread. Will check it out.

Okay. Where is your oil level set at? If it’s over full this can cause that issue.

 

[Farny]

Okay. Where is your oil level set at? If it’s over full this can cause that issue.

Right now it is half way between the marks. I had a low oil pressure alarm a month ago, changed the oil. I had it at the full mark, then sucked about 1/2 quart out.

 

[FSH 210 Sport]

Right now it is half way between the marks. I had a low oil pressure alarm a month ago, changed the oil. I had it at the full mark, then sucked about 1/2 quart out.

So do you think it’s possible that you got the oil residue when the oil level was at the full level and not between the marks?

Im all for fixing something if there’s a problem, but if it was just a case of having the oil level a bit too high then a fix isn’t necessary. Again, I would not just install a breather on the end of the hose, just plumb in a catch can so you can keep the engine sealed and maintain a vacuum on the crankcase.

 

[Farny]

Thanks - @FSH 210 Sport - so catch can is the best approach because it maintains a vacuum. that makes more sense than just a breather filter and plug on the intake.

I guess possible that caused the foamy residue. I wouldn’t say we were “over full” but on the top side. I did the change, turned over a few times checked, put in water ran 2 min - checked level while on water. That’s when she was at the top hole in the dipstick. I drained 1/2quart and it dropped to 1/2 way between the two marks. So there wasn’t a lot of run time at the full mark.

 

[FSH 210 Sport]

Keeping the breather tied into the vacuum of the engine is that you will not get the stink of engine oil vapor in your engine bay. Another thing is that vacuum in the crankcase eliminates piston ring flutter.