KenHorse

This is about 3000 miles worth of collection (roughly 1/4 of the capacity of the catch can's reservoir).

Z51, M7, VIN 11822.

Not overly aggressively driven but quite "spirited" most times

A Solid Rock

Seems like it really works!

I had one installed yesterday.

RX Extreme Performance installed it for me in Tampa Florida. They also manufacture them.

Gr8ful

That is a whole lot of oil where it does not belong.

Higgs Boson

now check your intake manifold. oily or dry?

where do you have it routed? is it connected to the dry sump tank?

glenB

So I'm guessing the patented valve covers aren't working as designed, imagine what the back of the intake valve would look like had you not had the catch can

KenHorse

No to all questions - I plan on having a look at the MAF, etc over the weekend.

(I've been offered a 3 port one from Elite but I was waiting to see what the deal was before I went for it)

Higgs Boson

It seems like the issues are the Z51 dry sump cars. I know my wet sump has not had any issues. my intake manifold and tube is bone dry, and I check it all the time.

DocHolliday

Man am I glad i installed mine, I haven't checked the can yet but I will this weekend.

Glen e

Same here ....the z51’s are putting oil in the air passages from burping the reservoir, not from the catch can.

I had one that I ordered for a friend, and then he decided not to buy a C7. So I put it on my non z51. I collected about a tablespoon per 1000 miles. So I took it off, based on that small amount and the info provided by mike at criswell that he published here, I don't need the extra plumbing....just. my choice. Not dissing those that do.

foreverfuelie

It seems like such a good idea. To be able to remove/separate oil from the vapors in the crankcase makes sense. My biggest concern is does it (the added separator) compromise the OEM emissions system? Will the car fail the visual emissions inspections? I'm in California and our "Smog Test" stations are very critical of any "breathers, vents, catch cans" that attach to any part of a "closed crankcase" and will fail you at the drop of a hat unless there is a CARB (California Air Resources Board) approval number available for the equipment.

///ADMAN

I'd rather have it in a baggie.

3 Z06ZR1

Have a picture of your set-up?
Just spent the 399.00 for the 2 port and oil cap. Had a oil burp or 2 or 3 and they suck!
This looks to be a nice set-up and not huge like another I was looking at!

mjw930

And I will contend that in 95% of the Z51's that have the "burping" issue is due to overfilling.

Like Glen I'm not dissing anyone that has or wants a catch can but I don't see this as that much liquid (it's more than oil IMHO) over 3000 miles as an issue. The engine would have consumed this without a problem and not leave anything in the intake manifold as it's in vapor form and takes something like a catch can to precipitate it.

The wet throttle bodies and intake manifolds are getting oil from the dry sump tank, not the PCV system.

I know my tank was at the border of being overfilled as the top hole on the dipstick was covered. When I changed it I made sure it was halfway on the crosshatch which equated to 9.4 qts. My intake and all tubes starting at the vent on the oil tank are 100% dry and trust me, the motor hasn't been babied.

A word of advice for Z51 owners who have others change their oil, tell them to fill with 9qts, not one drop more, and give you the 10th qt to take home so you can top it off to the correct level 5-10 minutes after you get home and shut the car off.

3 Z06ZR1

I blamed myself and "overfilling": it is not all over filling1
I will content that with the car a quart low on oil it STILL burped oil!

3 Z06ZR1

http://www.eliteengineeringusa.com/b...-check-valves/

The oil cap shown gets rid of the stock vent on the dry sump. Looks to be the answer!
Plus the catch can! 399.00 whole set-up on the way!
Then we should see a change on the 2015's or soon. This a factory problem on some of the Z51's

mjw930

Then there is something else wrong and GM needs to correct it. Luckily mine doesn't.

BTW Ron Fellows runs 50 Z51's all day long as hard as you can or should run these cars and they don't have oil tank burping issues, at least no one who's been there and asked has been told they do.

I corrected my post to say 95%

mjw930

Go for it but I will never put on a bandaid when the car is doing something it shouldn't and it shouldn't "burp". That's why I bought a new car with a warranty.

3 Z06ZR1

I have 600 rwhp but the car did a puke before the blower kit and has a time or two since.
This is better than the factory set-up far from a bandaid the cap is pretty trick the stock venting on the dry sump can be an issue. Then the catch can for extra measure.

If your happy
with 400 rwhp go for it but after nothing less than 513 rwhp and that was for a couple weeks. I love the Supercharged power, last build and cars were 2008/513 to 572, Z06 585 to 625rwhp, Stock ZR1
and the 600 from the C7.

The 460 alone from the C7 is boring!

Jontall

$399 is an insane price for a catch-can... They can keep it.

1KULC7

I would like to believe and still do put my trust with the engineers who designed the engine this will not be a problem. Will wait and see, no problems at all with my Corvette, but have less than 2,000 miles on it so far....