PeachParts Mercedes-Benz Forum - View Single Post - Retro-fitting an oil catch can/separator

Shern · #22 04-22-2021, 12:46 PM

Quote:

Originally Posted by ykobayashi

Good point. I didn’t think of that.

Still I think it’s a good idea to keep the separator’s flow restriction down. There’s a point where the restriction can get so high it doesn’t matter how much you pull vacuum...depends on how well the separator is designed. Some have really small nipples. That’s why I picked the BMW n54 style.

This one:
https://www.amazon.com/NovelBee-Polished-Aluminum-Engine-Reservoir/dp/B088CT74CD/ref=sr_1_8?crid=HTKA5TUU9HSJ&dchild=1&keywords=bmw+n54+oil+catch+can&qid=1619107807&sprefix=BMW+n54+oil%2Caps%2C229&sr=8-8

3/4" nipples on this one. I think that's even more than the stock breather... Interesting.

Some of these come with breathers, which seems like a good idea for increased airflow, though I can't understand how that wouldn't muck up your engine bay over time.

e.g.: This guy