the crankcase breather redirected? - PeachParts Mercedes-Benz Forum

Olivier · #1 09-04-2009, 06:45 AM

Hello,
Will it be better for the engine to breathe cleaner air and redirected the crankcase breather to a "regular" metal mesh plug/ filter placed somewhere in the engine bay instead of the air filter? See picture.
This as there was some soot in the air pipes and intercooler, apparently it come from the breather.

ingmar55555 · #2 09-04-2009, 06:55 AM

Oliver,

Plain answer ....yes,,,it does makes sense. Part of the sooth in the intake (combined with the EGR) caused the intake in my E290 to be heaviliy polluted. When I shut down the EGR, it was time to solve this other source. After looking through some of the already available solutions in tuning-guides, I doscovered that they are quitte expensive. This was the reason for me to craft it myslef based on an ordinary alloy drinking bottle. See the following link for a how-to. Albeit that the text is in Dutch, there are some pictures included.....
After 7500 km there was about a teaspoon of oil in it.
Making a low-cost catchcan

having the carter damp Ventilated ito open air is not allowed by the MOT in the NL, nor closing the EGR as a matter of fact (but it is not so visible)

Cheers Ingmar.

KarTek · #3 09-04-2009, 08:15 AM

Guys, I used to think this was a good idea until I started reading stories of valve problems on the N/A cars when their complicated PCV systems failed after being clogged with soot from the EGR or from heat damage.

I now believe the oil mist from the PCV is essential to valvetrain health whereas the EGR is harmful to it.

I do like Ingmar's home-made catch can - very innovative! I may have to try this on my truck which has problems with oil oozing out of every joint in the intake system...

Olivier · #4 09-04-2009, 09:10 AM

Very sporty catch can Ingmar

Olivier · #5 09-04-2009, 09:11 AM

Hi Evan,
The crankcase vent will stay on then if it help.
Thanks.

ingmar55555 · #6 09-04-2009, 10:35 AM

Quote:

Originally Posted by Olivier

Very sporty catch can Ingmar

Thinking of fitting one in the E300 as well, will use a green one then, more in line with the veggie-power style. Also put the letters APO on the back...which means Afgewerkte Planten Olie (WVO). Someone asked me last week if the car has been tuned, he heard about AMG and wondered who had tuned my car.

Cheers,
Ingmar

Olivier · #7 09-04-2009, 10:37 AM

Well done

They run well on veg, don't they

KarTek · #8 09-04-2009, 10:48 AM

Quote:

Originally Posted by ingmar55555

Thinking of fitting one in the E300 as well, will use a green one then, more in line with the veggie-power style. Also put the letters APO on the back...which means Afgewerkte Planten Olie (WVO). Someone asked me last week if the car has been tuned, he heard about AMG and wondered who had tuned my car.

Cheers,
Ingmar

I like those letters. Are they metal? How did you remove the factory lettering?

kerry · #9 09-04-2009, 10:50 AM

ForcedInduction had a homemade PCV system with a catch bottle for the oil, vented to atmosphere.

KarTek · #10 09-04-2009, 10:52 AM

Quote:

Originally Posted by Olivier

Hi Evan,
The crankcase vent will stay on then if it help.
Thanks.

I believe that member "Number Cruncher" there in the UK has better info on this. You can search for his name.

Olivier · #11 09-04-2009, 11:20 AM

Thanks Evan,
Number Cruncher helped me few times actually, about the perchs and the injectors.
I'll ask him later.
Happy weekend to all

ingmar55555 · #12 09-04-2009, 11:20 AM

Quote:

Originally Posted by KarTek

I like those letters. Are they metal? How did you remove the factory lettering?

Kartek,

I had no numbering on it when I bought it (quitte common for bigger engines)....the letters I got from a chain called "Halfords", but I guess any shop delivering after-market accesories have some of these in their stock.
You can also order them online at http://www.3dletterspecialist.com/3d-letters.html
Unfortunately they do not have the Mercedes font...only the VW

The original letters come offwith some heat (carefull) by using a heat-gun or hairdryer, glue remainders can be removed with some polish.

Cheers,
Ingmar

Number_Cruncher · #13 09-10-2009, 06:37 AM

When the valve stem oil seals are working well - which they generally do! - the sealing face of the inlet valve gets very little lubrication other than from the oil mist in the crankcase ventilation fumes.

Therefore, I would recommend that you should check your crankcase breather system, and make sure it's all free, and that the oil mist can get to the back of the inlet valves.

These engines, particularly the rearmost 2 cylinders suffer from inlet valve seat wear and recession - partly in the case of the NA OM606 by the fact that the routing of the crankcase breather pipes is a bit tortuous for the rear cylinders, and partly as the rearmost cylinders tend to run a bit hotter than those closer to the water pump and radiator.

I found serious inlet valve seat recession on my engine, which was causing compression loss, and it cost me about £600 to fix (I had new nozzles fitted to my injectors while they were olut, so, in total, about £800).

What I would suggest you look at is the EGR - if you can find a way to disable that without tripping your EML, then, it's worth trying - the combination of EGR and crankcase fumes tends to form potentially restrictive deposits inside the manifold.

For a bit more background on valve seat recession, see - http://www.tribology.group.shef.ac.uk/research/research_projects_valverecession.html

Olivier · #14 09-10-2009, 01:31 PM

Thank you for this NC