PCV breather and oil catch-can questions

[Wicked97]

we have a breather setup for these cars. Its cheap and easy install in about 5 mins

http://www.jpcracing.com/2011-gt-boss-breather-package/

The tanks work so long as you remember to empty them

 

[SS KILLR]

I have been thinking about those Eric.

 

[Fishstyx]

POOR a system fully vented to atmosphere.

BETTER one that uses check valves between the crankcase and the atmosphere.

BETTER YET one that uses a catch can between the crankcase and the check valve and the atmosphere.

BEST a system that maintains vacuum in the crankcase, uses a catch can between the crankcase and the check valve and uses a vacuum source either the intake or a vacuum pump.

Please explain the criteria you are using to make those assertions? I mean what's best from an emissions perspective isn't necessarily what's best from a performance perspective on the track.

 

[recordbreaker5]

is there a 3 port catch can? If so, you could run both covers into the can, and tap the 3rd line to the intake tube for vacuum. This is what my future plans includes.

 

[onebadgsx]

you could use the 2 port, 1 to vacuum line at intake, and 1 tee'd to both valve covers

 

[recordbreaker5]

you could use the 2 port, 1 to vacuum line at intake, and 1 tee'd to both valve covers

yea, i'm fucking stupid. good call.

 

[Fishstyx]

Some of us should apparently avoid any home DIY plumbing repairs or risk one hot mess

 

[silverpoison]

This works just need a black fitting to replace the blue and red.

 

[Sky Render]

Just run 2 breathers and call it good...

Seriously?

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[onebadgsx]

Yes. Many people do. No probs

 

[Fishstyx]

Yes. Many people do. No probs

Breathers sticking right out of the valve covers without a catch can is asking for an oily mess (even with filter media), especially if the car is supercharged. May be fine for a drag pull, but driving around for a while or driving on a road course will produce a big mess.

 

[onebadgsx]

Once the pcv is capped off there is no vacuum pulling the oil out. No probs here.

 

[Fishstyx]

Once the pcv is capped off there is no vacuum pulling the oil out. No probs here.

If the car is blown, there is blow-by pushing it out. It's also a lot worse if you introduce a lot of cornering forces that cause oil to collect in the heads.

 

[sharkbaits]

I've been the one detailing our JPC 2011 car and our N/A car. Both have little to no oil that comes out of the breathers.

Below are a few pictures

9.6x stock longblock Coyote -
http://sphotos-b.ak.fbcdn.net/hphotos-ak-snc7/291204_479058152124768_3417733_o.jpg

One of our turbo cars -

http://sphotos-b.xx.fbcdn.net/hphotos-prn1/62073_477011385662778_1467228921_n.jpg

Another turbo car after 100+ dyno pulls

http://sphotos-b.xx.fbcdn.net/hphotos-snc7/417634_346757528688165_857212196_n.jpg

 

[Fishstyx]

I've been the one detailing our JPC 2011 car and our N/A car. Both have little to no oil that comes out of the breathers.

How are they driven? I dump nearly 2 cups of oil per on-track day (about 2-3 hours of track time) from a catch can that vents to atmosphere. If I had breathers, that oil would be all over my engine bay.

 

[908ssp]

There are bunch of business and web sites explaining why you always want a vacuum in the crankcase. Not for emissions either but because your car will make more power with a crankcase vacuum and it will have less ring flutter so it will last longer and seal better. Crankcase filters were alright in the 50s when we didn't know better now it is ignorant and lazy.

 

[Napoleon85]

There are bunch of business and web sites explaining why you always want a vacuum in the crankcase. Not for emissions either but because your car will make more power with a crankcase vacuum and it will have less ring flutter so it will last longer and seal better. Crankcase filters were alright in the 50s when we didn't know better now it is ignorant and lazy.

They look fuckin cool though, I'm tempted to pick some up and just stick them on at car shows lol. When I'm actually driving the car, I just have a single catch can on the pass side.

 

[Sky Render]

There are bunch of business and web sites explaining why you always want a vacuum in the crankcase. Not for emissions either but because your car will make more power with a crankcase vacuum and it will have less ring flutter so it will last longer and seal better. Crankcase filters were alright in the 50s when we didn't know better now it is ignorant and lazy.

Having vacuum on the crankcase improves ring seal and prolongs engine life.

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[sharkbaits]

How are they driven? I dump nearly 2 cups of oil per on-track day (about 2-3 hours of track time) from a catch can that vents to atmosphere. If I had breathers, that oil would be all over my engine bay.

Street driven hard on the paxton and turbo set up. The NA car is a drag car. I agree if you lapping a road coarse car for hours on end we would and do breather tanks on those.

There are bunch of business and web sites explaining why you always want a vacuum in the crankcase. Not for emissions either but because your car will make more power with a crankcase vacuum and it will have less ring flutter so it will last longer and seal better. Crankcase filters were alright in the 50s when we didn't know better now it is ignorant and lazy.

Yes a vacuum pump is the way to go to make the most power. We've been working with Moroso for a year now on a vacuum pump of the Coyote. We just have some more testing to do on the system but it will not be very cheap, no REAL vacuum pump system is, we're not talking about electric pump junk.

Filters on the valve cover is better than pcv sucking oil down the intake onto your valves. Can you say detonation? We've ran breathers for YEARS with no issues, we have 8000+ rpm pushrod small blocks with 2 breathers that last with no issues caused by the breathers

 

[wbt]

Moroso catch can. /issue addressed and resolved.

http://www.moroso.com/catalog/categorydisplay.asp?catcode=18549