Dabigsnake

Took off my Sc cover of my '17 Z today to paint it. Only 1100 miles with a few redline 1/4 mile runs on the street. oil ingestion still apparent. Not sure it the HE bricks are total new design or just brackets holding them slanted. Didn't pay that much attention to my '15 Z bricks.

HNK

Thanks for the pictures. did you find any difference in the Manifold air temp vs your 2015?

Bob U

Thanks for the pic. Nice looking covers.
How does this car performe to your 15?

sammyv

Thanks for sharing.

marc0779

How many miles lots of oil?

GlennSullivan

Those intercooler bricks appear to be much larger

Mad Dog 24

Oil, the reason why I put a Colorado Speed can on my 15 now 15k miles ago. Now I see about 80% less oil residue and drain 4 to 6 oz. out of the can every 2k miles.

Agree those 17 bricks look thicker at the rear than the older ones.

jordanC6Z06

And here's the 15-16 bricks. Big difference. So for people that don't know, just changing the cover is pretty much pointless for the cooling department.

23/C8Z

If I'm not mistaken the 17 bricks are tilted up at rear not larger

Vegas Panton

Thanks for the photos of the new 17 supercharger. Looks like the attachment bolt at the rear of the bricks is in the same location, but the bracket that is attached to the rear of the brick is a different design that allows it to be tilted. If that bracket can be used on the 15/16 supercharger bricks that would be a good thing. Then GM could package a kit (taller lid, hood insulator, brick brackets)for the folks at have the older 15/16 Z06's. Hopefully they price it at a reasonable level--Maybe even an exchange program.

K1600GT

Very disappointed in the amount of oil in the SC. This will undoubtedly end up in the bricks and make them pretty inefficient over time and coke up the valves. Is this GM's way of lubricating the valve stems. Will I still void my warranty if I put an air/oil separator (catch can) inline? Is this amount of oil acceptable?

dmaxx3500

if you've only got 1100 miles on it,the rings might have not seated yet,id say 10,000 miles is about right

Bill Dearborn

Are you sure this is a problem or just an unfounded worry. How long do you plan on keeping the car? If you are planning on selling it before the end of the 5 year powertrain warranty why would you care? If the oil causes a problem before then GM will fix it.

Nobody has proven this is a problem on GM engines. On VW engines coking of the intake valves starts to noticeably affect engine performance in the 70K mile range. Plenty of GM DI V6s have that many or more miles and you don't hear any complaints. The vast majority LT1 and LT4 engines are not anywhere near the mileage you might see an impact.

Bill

lordofwar

gm has ruled a catch can can void your warranty.i don't like it either,so I pull the cover every 2000 miles and clean the oil out.simple job as you know.2000 miles when I pulled and cleaned mine.
before

after

spearfish25

People act like cleaning intake valves is the end of the world. Guys, a couple grand or a weekend day and a 6-pack of beer and you'll have clean intake valves. Stop being so dramatic about this intake oil BS.

K1600GT

I I am not sure it is a problem but sure doesn't look good, constantly coating the Intercoolers. Just seems like a real easy thing to prevent.

lordofwar

it has nothing to do about being dramatic,it has to do with a design of a $90,000 car that puts oil where it is not supposed to be.a simple catch can would prevent this,should be their from gm.period.

spearfish25

Disagree. You guys are making mountains out of mole hills. I just pulled my cover after 5k miles including plenty of spirited driving and two track days. This is what I found. I'd call this barely a sheen. At this rate I'll go 200,000 miles before there's ever an issue. Frankly I never plan to think about this issue ever again.

lordofwar

we can argee to disagree.i like my car to be clean on the outside and inside.did you clean all the oil up while you had the cover off,or did you just put the cover back on?according to you I hope you just put the cover on and left the oil in there,because it is not really a problem.like I stated and you know simple job,pull the cover clean out the oil and good for 5000 miles.i consider this like a oil change with my car,change oil,clean oil under lid.i do not know if it is a problem,or will be a problem down the road,so I do what I think is best for the motor,thats all.

spearfish25

There are a couple fallacies at play here. First is the thought that many ounces of oil are flowing through the supercharger every thousand miles. The appearance in the cover doesn't support this. It appears the catch cans alter the PCV flow and increase the collected oil volumes, magnifying the amount of oil one thinks is passing through the supercharger. This is supported by one catch can vendor haphazardly changing the flow restrictor when they were collecting excess oil so they simply decreased the volume collected. There was no science at play when they implemented the change.

If one refutes my first assertion, then the second misconception is that any oil entering the supercharger is collecting in the SC and not making it to the intake valves if you clean it frequently enough. If there are 3-4 ounces being collected in catch cans every 2-3k miles, it only leaves a minimal sheen and no puddles in the SC depressions? This makes no sense. So either the true oil pass through volume is low, or it passes through very completely and intermittent cleaning is useless.

Seeing my own SC, I think the actual oil volume entering the supercharger is extremely low and in the end, insignificant.

Here is the oil I collected on a paper towel after wiping the entire interior of the SC including the lid. There is more dirt that made it through the intake filter than oil from the PCV system. I'm impressed people aren't bitching about too much dirt getting ingested into their engines.