Crankcase Breather Help, Understanding the Breather Ports |
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Crankcase Breather Help, Understanding the Breather Ports |
mtc911 |
Apr 20 2020, 09:40 PM
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#1
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Member Group: Members Posts: 65 Joined: 18-March 18 From: Atlanta Member No.: 21,978 Region Association: South East States |
So, I have researched this one quite a bit and i cant seem to find the right answer. I have a “built” 2056 with Dual Weber Carbs. I “believe” it is a 1.7 Case with 2.0 Heads on it - not 100% sure there but the engine number seems to indicate that.
Anyway I have (2) the little Crankcase Breather Filters - one on the driver side and one on the oil fill (seen in the pictures). However there is nothing on the passenger side head. On the drivers side there is a T/splitter type thing that also pulls in a port out of the fan shroud. Obviously these little filters are making an oily mess in the engine bay - nothing too tragic but i would like to get rid of it if possible. I have been looking at the little Cans by Empi and Scat - that look like they would work. But I’m still kind of confused. 1 - Why would I have one of these on the Driver side Head and not the passenger side? 2 - If i install one of those cans should i route the port off of the fan shroud into it? I have read both yes and no on that question in my research. 3 - Will the can really even help reduce the oil in the bay? I have read yes and no on that question too 4- attached diagram is what i was planning to do with the breather box - is this correct? 5 - is there any downside to using one of these instead of the little cheaply filters? I have read a ton of posts on this in various forums and I cant come to a conclusion. Yet. Thanks |
Mark Henry |
Apr 21 2020, 06:18 AM
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#2
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
The EMPI breather boxes are crap.
You need a sealed box; -hose on the bottom drains back into the case or puke bottle. -hose in the middle is from the case breather tower. -hose in the top to a carb. I'd just plug the head vent. On my bug I used a EMPI breather box but I milled off the lid tit's and sealed the box with sealant. I remove the foam and bend up the metal screen so that it catches vapours. I then mounted it vertically with the now bottom draining back to the case and top vented to a carb. I drill extra vent holes in the middle and use breather vents. |
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