*WARNING* to ALL BOOSTED C7s
Tech Contributor
Joined: Jan 2006
Posts: 4,761
Likes: 240
From: Saint Louis MO
St. Jude Donor '14-'15
Instructor
Joined: Jun 2013
Posts: 204
Likes: 10
Instructor
Joined: Apr 2005
Posts: 245
Likes: 16
From: nj
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Tech Contributor
Joined: Jan 2006
Posts: 4,761
Likes: 240
From: Saint Louis MO
St. Jude Donor '14-'15
Things have gotten a lot better in the last week. We can finally all start working together instead of fighting with 17 usernames that all want to argue.
Thanks to Doug for finding this, though. I'm bummed that a 5 minute fix would have saved me from buying the breather, but I'm happy for everyone else that was facing (eventual) problems!
Thanks to Doug for finding this, though. I'm bummed that a 5 minute fix would have saved me from buying the breather, but I'm happy for everyone else that was facing (eventual) problems!
Thread Starter
Instructor
Joined: Apr 2008
Posts: 193
Likes: 2
Things have gotten a lot better in the last week. We can finally all start working together instead of fighting with 17 usernames that all want to argue.
Thanks to Doug for finding this, though. I'm bummed that a 5 minute fix would have saved me from buying the breather, but I'm happy for everyone else that was facing (eventual) problems!
Thanks to Doug for finding this, though. I'm bummed that a 5 minute fix would have saved me from buying the breather, but I'm happy for everyone else that was facing (eventual) problems!
Drifting
Joined: Jan 2007
Posts: 1,865
Likes: 27
From: WTB Kook 2" long tube 4 C5 TEXAS
So I dont need an $800 catch can?
OK we have found the culprit regarding this issue guys.
The check valve, which actually is a plastic ball in the breather lines, are sticking on some vehicles. This would have started happening with stick cars too in time, but they hit higher vacuum numbers then the auto's do which pull them open again.
The slightest amount of crap on the ball and it will stick, I checked a stock car today that had one working and one stuck.
This is not a "boosted" problem, but a GM problem in my eyes, but we will probably provide a new clipped end without the check valve to eliminate the issue.
Those that are already supercharged, I suggest you just remove the check valve from the hose end, it's pretty simple to do.
You may have had this issue when you were stock, but you would not have created enough crank case pressure to see it's negative effects.
Problem solved!
The check valve, which actually is a plastic ball in the breather lines, are sticking on some vehicles. This would have started happening with stick cars too in time, but they hit higher vacuum numbers then the auto's do which pull them open again.
The slightest amount of crap on the ball and it will stick, I checked a stock car today that had one working and one stuck.
This is not a "boosted" problem, but a GM problem in my eyes, but we will probably provide a new clipped end without the check valve to eliminate the issue.
Those that are already supercharged, I suggest you just remove the check valve from the hose end, it's pretty simple to do.
You may have had this issue when you were stock, but you would not have created enough crank case pressure to see it's negative effects.
Problem solved!
Tech Contributor
Joined: Jan 2006
Posts: 4,761
Likes: 240
From: Saint Louis MO
St. Jude Donor '14-'15
I know it was meant to be sarcastic, but I think we'd all agree that you should have a catch can, even with the stock PCV system. Of course those are $200-$300 instead of $600.
The oil buildup is a real issue that's not going to be solved any other way.
The oil buildup is a real issue that's not going to be solved any other way.
Tech Contributor
Joined: Jan 2006
Posts: 4,761
Likes: 240
From: Saint Louis MO
St. Jude Donor '14-'15
http://forums.corvetteforum.com/c7-t...es-thread.html
Melting Slicks
Joined: Jan 2011
Posts: 2,195
Likes: 19
Shameless plug for my own thread, but it will absolutely answer the question.
http://forums.corvetteforum.com/c7-t...es-thread.html
http://forums.corvetteforum.com/c7-t...es-thread.html
Tech Contributor
Joined: Jan 2006
Posts: 4,761
Likes: 240
From: Saint Louis MO
St. Jude Donor '14-'15
As I said above, I don't anyone would disagree that you should use at least a catch can on these motors (especially with FI). Elite has a very nice can (the E2), but I decided to go with the LMR to eliminate any worries with pressure.
As power scales, you'll eventually overpower the stock PCV, but that takes more than a blower kit. They originally made the breather for their twin turbo system, so it's kind of overkill.
Either way, several of us would recommend having something to catch that oil.
As power scales, you'll eventually overpower the stock PCV, but that takes more than a blower kit. They originally made the breather for their twin turbo system, so it's kind of overkill.
Either way, several of us would recommend having something to catch that oil.
Le Mans Master
Joined: Oct 2004
Posts: 8,615
Likes: 60
From: Haymarket Virginia
Things have gotten a lot better in the last week. We can finally all start working together instead of fighting with 17 usernames that all want to argue.
Thanks to Doug for finding this, though. I'm bummed that a 5 minute fix would have saved me from buying the breather, but I'm happy for everyone else that was facing (eventual) problems!
Thanks to Doug for finding this, though. I'm bummed that a 5 minute fix would have saved me from buying the breather, but I'm happy for everyone else that was facing (eventual) problems!
You never did, a $200 Catch can would work, just wouldn't look as nice and not have the same amount of volume.
Keep that oil off those valves. Then again, Meth Injection will do that too
Tech Contributor
Joined: Jan 2006
Posts: 4,761
Likes: 240
From: Saint Louis MO
St. Jude Donor '14-'15
Nah - I'm excited to get it back from the powder coater. I think it's going to look 10x better after that's done.
Exactly - the cans will hold less, but retain the legal PCV system. The other option is more race-oriented.
So we can justify a meth kit as preventative maintenance? Sweet!!
Le Mans Master
Joined: Oct 2004
Posts: 8,615
Likes: 60
From: Haymarket Virginia
Nah - I'm excited to get it back from the powder coater. I think it's going to look 10x better after that's done.
Exactly - the cans will hold less, but retain the legal PCV system. The other option is more race-oriented.
So we can justify a meth kit as preventative maintenance? Sweet!!
Exactly - the cans will hold less, but retain the legal PCV system. The other option is more race-oriented.
So we can justify a meth kit as preventative maintenance? Sweet!!
More performance and it cleans the carbon deposits.