Need An Oil Breather Suggestion Options

[kenshapiro2002]

Chewing gum? Piece of potato?

I think you'll have to block off some.

[tat2dphreak]

sure, use a potato... rest of us would use a rubber port block off, or if you are really cheap, use a piece of rubber hose with a bolt in it, and a clamp.

[kenshapiro2002]

If I can't find a suitable potato, I was going to put some kind of gasket (rubber?) inside the ports not used. Wouldn't a piece of rubber hose with a clamp be more expensive?

sure, use a potato... rest of us would use a rubber port block off, or if you are really cheap, use a piece of rubber hose with a bolt in it, and a clamp.

[bandjoey]

OK I'll ask the dumb question. What's the damage to vent only from the oil filler to the breather box, and not back into the heads (assuming there's no head vent)??? Thanks Bill

[tat2dphreak]

You probably have a small piece of hose laying around somewhere and maybe a 0.05 bolt too leaving another nickel clamp to rustle up or try "new" potatoes


Bill, I think it's good to vent out of the heads is the point.. Just another place to let pressure escape, that's my guess anyway

[McMark]

OK I'll ask the dumb question. What's the damage to vent only from the oil filler to the breather box, and not back into the heads (assuming there's no head vent)??? Thanks Bill

Not a dumb question at all.
Technically, you're not venting back into the heads, your venting the heads as well as the case.
But if you have no head vents, you're not in a BAD position, you're just not in the best condition. Venting the case is necessary, venting the heads is preferable. The older your motor (more blow-by) and/or the higher you're revving, the more venting you need.

[SirAndy]

OK I'll ask the dumb question. What's the damage to vent only from the oil filler to the breather box, and not back into the heads (assuming there's no head vent)??? Thanks Bill

Not a dumb question at all.
Technically, you're not venting back into the heads, your venting the heads as well as the case.
But if you have no head vents, you're not in a BAD position, you're just not in the best condition. Venting the case is necessary, venting the heads is preferable. The older your motor (more blow-by) and/or the higher you're revving, the more venting you need.

And just to confuse you even more, at lower rpm, the head ports actually have negative pressure, thus sucking in air and oil from the breather.

The system needs to be open to the atmosphere somewhere, otherwise you're going to blow the main seals out of your engine.

The idea is simply to not have a mist of oil all over your engine compartment. On the factory FI, the oil vapors are routed back into the air-filter and burnt.

The breather boxes used with carbs are still open to the atmosphere, they're not closed. But they have a sponge inside to collect oil vapors which will condense and drain back into the engine when the motor is shut off or on idle.

(IMG:style_emoticons/default/shades.gif) Andy

[tat2dphreak]

Double post, damn phone

[kenshapiro2002]

Where...where...? (IMG:style_emoticons/default/WTF.gif)

Double post, damn phone

[pcar9146guy]

Even though this is used on a six, it's still a single port tank. Got it at Summit Racing. One inlet, ball valve drain, filter, and mounting provision.

[kenshapiro2002]

Nice. That's what I had in mind, but ordered an Empi this morning. (IMG:style_emoticons/default/chair.gif)

Even though this is used on a six, it's still a single port tank. Got it at Summit Racing. One inlet, ball valve drain, filter, and mounting provision.

[tat2dphreak]

Where...where...? (IMG:style_emoticons/default/WTF.gif)

Double post, damn phone

I edited the 2nd post to say "double post" since we can't delete the posts. it was the post from last night again. when I opened up safari on my iphone it re-submitted the post (IMG:style_emoticons/default/smile.gif)

[agentblr]

Another dumb question: why did the 75-76 cars not have the head vents drilled out like the early cars. They just vented the case ,maybe a money saving tactic ??

[tomeric914]

Looks better than that bean can. (IMG:style_emoticons/default/biggrin.gif)

The EMPI arrangement may look better, but if you actually drive the car, the sponge can get saturated with moisture resulting in a misty film all over the engine. Tech inspectors LOVE to see that. BTDT

Chris's oil separator is the way to go.

http://www.tangerineracing.com/engine.htm#...0Breather%20Can

[kenshapiro2002]

They don't have tech inspectors in my neighborhood. (IMG:style_emoticons/default/av-943.gif)
In all seriousness, I'm not racing, and Chris' can was just too expensive for something I really don't need for my use of the car. Right now O have a bare hose sticking into my cooling well and just wanted something to catch the oil mist to keep my engine a little cleaner. I'll keep my sponge clean.

Looks better than that bean can. (IMG:style_emoticons/default/biggrin.gif)

The EMPI arrangement may look better, but if you actually drive the car, the sponge can get saturated with moisture resulting in a misty film all over the engine. Tech inspectors LOVE to see that. BTDT

Chris's oil separator is the way to go.

http://www.tangerineracing.com/engine.htm#...0Breather%20Can

[rhodyguy]

with the empi version you will STILL have to find a way for the oil that puddles under the piece of soft foam (that is in the breather box) to return to the engine or be prepared to sop it up on a regular basis. if you figure out a way to return the spent oil to the engine you have to mount the box high enough so the return lines all run down hill. chris's cannister style drains back to the fill tower base via a small line and a fitting tapped into the base. spending a little extra on the front end when solving a problem, eliminates bs hassles at the finish.

[kenshapiro2002]

Where can I get a few of those? If not, whattaya think about siliconing in a coupla aluminum discs?

sure, use a potato... rest of us would use a rubber port block off, or if you are really cheap, use a piece of rubber hose with a bolt in it, and a clamp.

[tat2dphreak]

you can get those at FLAPS. or the piece of hose (IMG:style_emoticons/default/smile.gif)

[stephenaki]

a decent, affordable (like $50 or less) breather box that I can just vent into the atmosphere of the engine bay

(IMG:style_emoticons/default/stirthepot.gif)
Why spend any money at all? Next time you change the oil just save one bottle to route the hose into. (IMG:style_emoticons/default/headbang.gif)

(yes, I am being sarcastic)

But then again, that's exactly what the German 'Porsche specialists' did with my tube.

[stephenaki]

After reading through the entire thread I am of the opinion that blowby was the source of my original oil leak. I will need to get some shots of the set up that Boxter put in but I am definitely going to have to look into some of the solutions listed in this thread. Will post some pictures tomorrow for some educated input. (IMG:style_emoticons/default/biggrin.gif)