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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N57 / M57 Turbo Diesel Discussions - 335d > Another 335d with a Catch Can under 200$



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      02-03-2014, 08:36 PM   #23
BB_cuda
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Quote:
Originally Posted by TDIwyse View Post
When I got home from work just now I left the car running and pulled the dipstick out. I could see crankcase fumes coming from the dipstick hole, so measuring pressure there seems like it might be a good place to start.

Wonder how much crankcase pressure/gasses one could vent out the dipstick tube?
If you put your finger over the dip stick tube, is there any feeling of pressure? I suppose i could do it myself on my unit.

FWIW, when i disassembled my intake box last weekend, I stuck my finger down into the 3" elbow into the outlet of the 4" long ribbed section. I barely found any oil residue in there. My finger wasn't wet but there was a smudge of black on my finger. Others have described a much messier condition at the top of this 4" long hose. I wonder if this is the variable we have been seeing where some guys can run 80 or 90 kmiles and okay. Other guys run 50k and bam, CBU!
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      02-03-2014, 10:10 PM   #24
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My car had a pool of oil both on the lip of the first turbo and at the EGR valve. This is why this was such a must for me.
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      02-03-2014, 10:29 PM   #25
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Quote:
Originally Posted by BB_cuda View Post
If you put your finger over the dip stick tube, is there any feeling of pressure? I suppose i could do it myself on my unit.
HA! I did put my finger on it :-) At idle I couldn't notice any pressure. But my finger tip isn't highly calibrated ...
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      02-06-2014, 11:30 PM   #26
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Any plans regarding selling a kit?
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      02-07-2014, 11:53 PM   #27
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Originally Posted by dixy2k View Post
Any plans regarding selling a kit?
Whos this for? Pretty much just gotta buy the bms can and some tubing. There you can decide how you want to route it and buy 2 fittings. Easy as can be.
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      02-08-2014, 12:09 PM   #28
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Quote:
Originally Posted by montr View Post
You can buy manometer to measure the vacuum or you can build one for few dollars
http://www.leapsecond.com/pages/manometer/
http://www.ehow.com/how_10020653_mak...ter-gauge.html
montr, this was a great suggestion. Thanks. See here and following few posts for data and results.

http://www.e90post.com/forums/showpo...&postcount=319
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      10-25-2015, 05:20 AM   #29
kshah786
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Hi sorry if this is a dumb question. But would gravity play a part in the catch can. Would it have to be installed lower than the elbow pipes. Also what about "pooling"
I have a 335d so looking to do this mod.
Thanks.
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      10-25-2015, 08:09 AM   #30
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Quote:
Originally Posted by kshah786
Hi sorry if this is a dumb question. But would gravity play a part in the catch can. Would it have to be installed lower than the elbow pipes. Also what about "pooling"
I have a 335d so looking to do this mod.
Thanks.
Yes mounting it lower would be very ideal. However available real estate under the hood is hard to come by. Trick is you would want lower but not into areas that get below freezing as the tubes risk freezing closed with moist vapors in winter climates.

At one point I was curious to mount it low in the front right fender well but struck out. That area is packed with the oil cooler and brake ducts plus puts it in the freeze zone.
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      10-25-2015, 12:50 PM   #31
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Thanks Mark.

So could you briefly explain how a catch can works on the 335ds. How does the oil get into the pipes. Thanks again
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