*WARNING* to ALL BOOSTED C7s
Safety Car
Joined: May 2008
Posts: 4,629
Likes: 19
From: Chesapeake VA
Any TSBs out yet on the PCV system? I have no intention of supercharging a C7, but I really don't want to have to cut up the PCV valves... I've had many modded cars and would leave this one stock.
Premium Supporting Vendor
Joined: Oct 2004
Posts: 23,599
Likes: 1,225
From: Providing the most proven supercharger kits for your C5/6/7 609-752-0321
I have not looked into TSB's yet, but GM is paying for the overnighting of new balancers to dealers. They do not do that for nothing, and a balancer is a heavy piece to O/N.
There is a known problem and I feel it all stems back to blowing seals from breathing issues.
Time will tell.
There is a known problem and I feel it all stems back to blowing seals from breathing issues.
Time will tell.
Premium Supporting Vendor
Joined: Oct 2004
Posts: 23,599
Likes: 1,225
From: Providing the most proven supercharger kits for your C5/6/7 609-752-0321
Tech Contributor
Joined: Jan 2006
Posts: 4,761
Likes: 240
From: Saint Louis MO
St. Jude Donor '14-'15
Tech Contributor
Joined: Jan 2006
Posts: 4,761
Likes: 240
From: Saint Louis MO
St. Jude Donor '14-'15
Again, I have to compliment you on figuring out something that even the GM engineers could not - such a simple fix, but easily overlooked.
Le Mans Master
Joined: Oct 2004
Posts: 8,615
Likes: 60
From: Haymarket Virginia
Just to comment on this specifically, I have spoken to multiple dealers that have already had cars in for breather issue problems. Thus resulting in oil being forced out the breather lines. They were all stock vehicles, naturally a supercharger will compound those issues.
Once this is corrected the way it has been described in this thread, it is no longer an issue, so I am sticking with my statement of a catch can is not necessary at this point on an ECS SC equipped vehicle.
For one, if there is oil pushed, it will onto go into the air box on our kit, not the intake/engine itself but the vapor is so you do not get any oil smell in the car. Also I have looked at every car here including the one that made 750rwhp, and all are dry as can be.
If for any reason this opinion changes, I will be the first one to post it up!.
Once this is corrected the way it has been described in this thread, it is no longer an issue, so I am sticking with my statement of a catch can is not necessary at this point on an ECS SC equipped vehicle.
For one, if there is oil pushed, it will onto go into the air box on our kit, not the intake/engine itself but the vapor is so you do not get any oil smell in the car. Also I have looked at every car here including the one that made 750rwhp, and all are dry as can be.
If for any reason this opinion changes, I will be the first one to post it up!.
My concern is coking as well as when I go FI of detonation.
Tech Contributor
Joined: Jan 2006
Posts: 4,761
Likes: 240
From: Saint Louis MO
St. Jude Donor '14-'15
So what would the correction be? My car is in the shop right now and that was one of my "concerns" and they said GM said it's completely normal for oil to be in the throttle body / intake manifold. The harder i drive my car, the more oil will get in the TB / Intake manifold.
My concern is coking as well as when I go FI of detonation.
My concern is coking as well as when I go FI of detonation.
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Racer
Joined: Sep 2006
Posts: 288
Likes: 4
Just to comment on this specifically, I have spoken to multiple dealers that have already had cars in for breather issue problems. Thus resulting in oil being forced out the breather lines. They were all stock vehicles, naturally a supercharger will compound those issues.
Once this is corrected the way it has been described in this thread, it is no longer an issue, so I am sticking with my statement of a catch can is not necessary at this point on an ECS SC equipped vehicle.
For one, if there is oil pushed, it will onto go into the air box on our kit, not the intake/engine itself but the vapor is so you do not get any oil smell in the car. Also I have looked at every car here including the one that made 750rwhp, and all are dry as can be.
If for any reason this opinion changes, I will be the first one to post it up!.
Once this is corrected the way it has been described in this thread, it is no longer an issue, so I am sticking with my statement of a catch can is not necessary at this point on an ECS SC equipped vehicle.
For one, if there is oil pushed, it will onto go into the air box on our kit, not the intake/engine itself but the vapor is so you do not get any oil smell in the car. Also I have looked at every car here including the one that made 750rwhp, and all are dry as can be.
If for any reason this opinion changes, I will be the first one to post it up!.
Former Vendor
Joined: Oct 2007
Posts: 2,032
Likes: 6
From: longview tx
Dry sump only that i know of. I am in contact with quite a few shops now one of us will get this figured out and will let everyone know so we can move on. Its going to be something simple im sure that fixes it its just finding it.
but all the cars have been
AUTO
z51
Dry Sump
as far as i know, atleast all the shops that ive talked to are. I have 2 more PMs in my box today from shops with the same issue wanting to know if we figured it out. i "THOUGH" i did with the check ***** sticking and told Doug i found it. but once i drove it, it proved me wrong :-(. BUT the check valves DO stick and WILL give issues im sure down the road. we just installed another kit on a stick car today and we pulled the Check ***** out on that one
but all the cars have been
AUTO
z51
Dry Sump
as far as i know, atleast all the shops that ive talked to are. I have 2 more PMs in my box today from shops with the same issue wanting to know if we figured it out. i "THOUGH" i did with the check ***** sticking and told Doug i found it. but once i drove it, it proved me wrong :-(. BUT the check valves DO stick and WILL give issues im sure down the road. we just installed another kit on a stick car today and we pulled the Check ***** out on that one
Tech Contributor
Joined: Jan 2006
Posts: 4,761
Likes: 240
From: Saint Louis MO
St. Jude Donor '14-'15
Racer
Joined: Sep 2006
Posts: 288
Likes: 4
Interesting, ours is an Auto Z51 with dry sump, but no issue as of yet after a little over 4000 miles being boosted but at only 5 psi. This is including around 60 dyno pulls and a few passes at the drag strip and autocross. Both check ***** are still moving freely.
Tech Contributor
Joined: Jan 2006
Posts: 4,761
Likes: 240
From: Saint Louis MO
St. Jude Donor '14-'15
Former Vendor
Joined: Jun 2012
Posts: 1,511
Likes: 0
From: Breslau Ontario
My ECS supercharger is going on with an LMR breather right from day one. No sense in even risking the seal.
As for auto's only, can't get my head around why that would be but as mine is an auto as well it's even more reason to spend the extra $$ and do it right from day one.
As for auto's only, can't get my head around why that would be but as mine is an auto as well it's even more reason to spend the extra $$ and do it right from day one.
Former Vendor
Joined: Oct 2007
Posts: 2,032
Likes: 6
From: longview tx
great times! Glad yours is one of the VERY few that has no issues on a auto car.
i have a PM box FULL of shops that are all working together to try and fix this issue for everyone so we can all move on and enjoy our cars. removing the check ***** didn't fix this issue on the car in our shop or any of the other shops, however if you just look at the pics posted you can tell that in time it WILL be a issue for people. we found the check ***** sticking on this car here in house with less that 5000 miles on it.
Tomorrow we will hopefully have a fix between all the shops working on this issue and one of us will post up the fix so others dont have to go though all this
Tech Contributor
Joined: Jan 2006
Posts: 4,761
Likes: 240
From: Saint Louis MO
St. Jude Donor '14-'15
This issue has nothing to do with kits and everything to do with GM OEM parts failure, period. This will happen on N/A stock cars as well, given that GM is already replacing seals, balancers, etc. under warranty. I'd also love to see a picture of your supercharged C7, by the way!