ReRouting CCV lines on E300 [NON-Turbo] - Page 2 - PeachParts Mercedes-Benz Forum

LightMan · #16 02-24-2004, 12:22 AM

Veedub, and mickey vella- good thread ya got going. A few points. The E300 EGR is nowhere near as active percentage wise as the TDI EGR is. The E300 EGR is only tuned up enough to meet emissions standards, which are not tough for passenger diesels in 1997. E300 owners do not have the same clogged intake problems as TDI owners, in fact, I've not heard of a single E300 with an intake clogged like a TDI, to the point where it's caked full and hurting performance. Some people have 300K miles on E300's already as well. With a straight 'elephant' hose mod like above and on tdi's , there will be some additional oil consumption without question. The oil vapors are just that - they contain oil, which is vented outside on the ground/in the air, instead of back into your engine. The consumption shouldn't be massive though. You will also have a stink from it, and occasional drips on the garage floor. Depending on how long you make the hose, people who live in winter climates risk major engine damage due to the hose freezing. Be careful.

What does CCV stand for?
CrankCase Ventilation.

What was its original design intention?
CCV is designed to reduce overall emissions, mainly NOX. It routes piston blowby gases and oil vapors into the intake to be burned again instead of vented to the atmosphere like a tradional setup.

Why is it not necessary?
It hasn't been determined it's not necessary, and nobody has found out if mercedes has engineered any other purpose for the oil/vapor, or a way to deal with it, which is quite possible since we don't have clogging problems. IMO this is truly experimental. Hats off to Michaveli for testing this, but lets not call it a successful mod or recommended practice just yet with only one test case..

I should mention that its a federal offense, to modify federal emissions equipment in a way to increase emissions. If you live where they do emissions testing, dont do this or put it back to stock before you go in. Some dealer could possibly narc on you too.

Have you seen any impact on performance?
Changing the CCV will NOT affect performance whatsoever - thats a placebo effect happening big time. Removing EGR will give a slight upper rpm boost as vdub mentioned.

But I'm glad now that with the EGR blocked and the Crankcase vapors rerouted, only fresh air enters the entire intake tract and into the engine.

Theoretically it sounds great on the surface. I hope in another 50k or so you'll take off your intake manifold and see whats up.

michakaveli · #17 02-24-2004, 12:37 AM

Disclaimer*

This thead is for educational purposes. Anything in this thread is in it's current state back to emissions guidelines, Federal and Local. This thread was only used for educational purposes and temporary.

LightMan · #18 02-24-2004, 12:41 AM

noots triple doody babababa. Rick miley eeeawll mickey vella

michakaveli · #19 10-29-2007, 10:30 AM

Bring this thread back to life with some photos from my original install.

Since I have updated this design to incorporate the OM606 Turbo's straight pipe from the CCV valve to the front of the engine and the right angle bent. From there out I used a piece of copper tubing with a 45 degree bend, finally connecting to a 3/4" rubber hose and trailing it out toward the bottom of the car.

Over the past thousand of miles I have found it it not a stout solution. The copper end, elthough snug when clean and new eventually loosens and slides out, letting out some of the gases into the engine compartment. Not a big deal but I'm not a fan nonetheless..... I feel I will be going back to a similar system as featured below, just with a better resolution to the right angle bend. I'm thinking a 90 degree PVC 1/2" to 3/4" should so the trick, along with either 3/4" or 5/8" heater hose....

One photo now as a teaser.. Need to go home and resize the remaining photos

michakaveli · #20 10-29-2007, 10:47 PM

Pix Reposted...

michakaveli · #21 10-29-2007, 10:48 PM

One more

michakaveli · #22 01-15-2008, 09:56 AM

Pics directly uploaded! This was my crude setup back 4-5 years ago. Since then I have purchased the plumbing used in the OM606 turbo's to run from the CCV valve to the side of the valve cover. This approach has not been to successful as the copper elbow I have leading to side of the valve cover get's oily and falls out gradually. I haven't had a chance to change it back yet.

I will go back this this pictured setup, using I believe 3/4" heater hose and a right angle PCV elbow for that sharp bend and all should be well. As well as it drains and breathes properly, you'll have a drop or two on the ground. I can deal with it!

Enjoy...