Some of you may have followed my thread about having lifters and cam replaced on my '19 GS. The car is running great since then BUT I have a question about some oil line routing.

This doesn't seem right to me but all I have to compare to is my old '14 Z51 and things appear to be slightly different.

Could someone with a '19 dry sump confirm that line crossing over the TB to the left side head is correct?

 

I think so.

 

Thanks, guess I was wrong!

 

Ken,
there for a minute I thought I was going to get an answer to a question I posted a long while ago. Here is my question.



Ok folks, let me see if the pictures will help. The white one is my friends brand new 2017 C7 GS and the red one is my 2016 C7 Z51. So if the engines are the same why do I see some quick differences.
1-how come I have another oil cap on the drivers side that he doesn't?
2-how come I see some hoses on his engine that I don't see on mine or at the least are routed different.
This is what my post was about, not the need for a catch can. There are a lot of smart folks here and I simply wanted your feedback on any potential changes between the 16 and 17 engines.

So again, did GM make some changes related to the PVC oil sucking issues that we don't know about yet? It sure looks like it to me. I don't have the smarts to know what each hose goes to just by looking but I know some of you might be able to determine what might be going on by seeing these pictures.

If we all determine that they made some improvements by simply adding some new hoses and rerouting them, can we expect to be able to purchase those new hoses and retrofit our cars to the new improved version? Anyone care to weigh in on these issues without telling me I need a catch can? Once I know what they did I can then determine if I'll need a catch can or not.









Last edited by Ammo; 09-08-2016 at 09:10 PM.

 

That engine with the oil cap on the driver side is not a Z51 dry sump. That's a wet sump engine.

 

Ken they changed the breather setup in 2017 for the dry sump cars... so the driver side goes to the dry sump tank instead of the intake tube. Your setup is correct.

 

No. Dry sumps had it too. It was a dummy oil cap.

 

Which year? My '14 Z51 didn't

 

My '16 doesn't have it. Why would GM decide to introduce a dummy oil cap? Seems like an odd thing to do.

 

My 2019 doesn't have it either. I've never seen that on a dry sump.

 

Also that red car has no oil cap on the right side for the dry sump. I still don't think that red car is a Z51.

 

Look at the 2nd pic of the red car. You can clearly see the dipstick in the reservoir

Curiouser and curiouser

 

If you remove the engine covers there is a fixed oil cap on the passenger side of dry sump motors. They use the same valve cover, but cap it vs. installing a filler neck.

 

^^^
Interesting - so I guess the red car in the pick decided to change the cover to the dry sump and add the cap for some reason. A strange thing to do.

 

No... that one pic of the car with the exposed oil cap on the driver side isn't a dry sump car,. You can't see the cap until you take all the covers off.

 

Not sure I agree. Note the dip stick and apparent oil line routing:

 

It's two different cars that happen to be the same color. Seen a lot of C7s.... no dry sump cars have an exposed oil fill. Unless someone added it.

 

Bingo.

 

No it is the same car. and I beleive the oil filler cap on the driver side is functional. I'm going down to the garage now to take a few more picts for the nay sayers!

 

Then someone put a non dry sump valve cover and coil covers on the car.