C5 Tech Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

Supercharger Question(Dip stick pops out)

Thread Tools
 
Search this Thread
 
Old Mar 19, 2003 | 06:29 AM
  #1  
bobroz's Avatar
bobroz
Thread Starter
Instructor
10 Year Member
 
Joined: Aug 2001
Posts: 101
Likes: 0
From: Cos Cob CT
Default Supercharger Question(Dip stick pops out)

I had a ATI supercharger installed in my 2001 C-5. The other day I was driving and really mashed the accelerator and noticed that there was smoke comming out of the hood and it smelled like oil so I pulled over and the dip stick poped out and there was oil all over the engine. I changed the dip stick thinking it was the O-Ring. I tried it one more time and it did it agian. Is this normal and what can I do? Thanx for any imput
Reply
Old Mar 19, 2003 | 08:18 AM
  #2  
RWE 427's Avatar
RWE 427
Drifting
20 Year Member
Veteran: Marine Corps
Liked
Loved
 
Joined: Dec 2001
Posts: 1,808
Likes: 19
From: Little Rock, AR
Default Re: Supercharger Question(Dip stick pops out) (bobroz)

It sounds like to me you are pressurizing your crankcase. Have you checked your pcv valve? It might be bad. If thats not it you could do a leak down test to see how good your rings are. How many miles do you have on the Vette? TTT for you.


[Modified by RobsC5, 8:19 AM 3/19/2003]
Reply
Old Mar 19, 2003 | 08:45 AM
  #3  
onfire's Avatar
onfire
Burning Brakes
20 Year Member
 
Joined: Nov 1999
Posts: 1,221
Likes: 59
From: Abingdon VA
Default Re: Supercharger Question(Dip stick pops out) (RobsC5)

Some of the FI guys put a small spring on the dipstick to keep it from lifting under boost.
Reply
Old Mar 19, 2003 | 08:55 AM
  #4  
vetterdstr's Avatar
vetterdstr
Team Owner
20 Year Member
 
Joined: Mar 1999
Posts: 28,753
Likes: 9
From: San Jose/Bear Valley CA
CA Events Coordinator
Default Re: Supercharger Question(Dip stick pops out) (bobroz)

You are going to need to install a one way check valve inline with your PCV valve. If you keep this up you will end up blowing up the engine from boosting the crank case.. :cry

vetterdstr :cheers:
Reply
Old Mar 19, 2003 | 10:01 AM
  #5  
Duck916's Avatar
Duck916
Team Owner
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2001
Posts: 21,404
Likes: 1,011
From: Various places in Southern California.
Default Re: Supercharger Question(Dip stick pops out) (vetterdstr)

You are going to need to install a one way check valve inline with your PCV valve. If you keep this up you will end up blowing up the engine from boosting the crank case.. :cry

vetterdstr :cheers:
Ding Ding Ding! This is exactly the problem. Since your manifold is now under pressure, not vacuum, the PCV valve is flowing backwards when under high boost pressures. A check valve should fix it.

By the way, when he says "blow the engine" he means explode--this can literally cause an explosion in the crankcase. It's fairly rare, but can happen. Way back in the old days, before PCV valves, it would occasionally happen on normally aspirated motors.
Reply
Old Mar 19, 2003 | 11:35 AM
  #6  
Shinobi'sZ's Avatar
Shinobi'sZ
Le Mans Master
Veteran: Navy
25 Year Member
All Eyes On Me
Top Answer: 1
 
Joined: Sep 2000
Posts: 6,976
Likes: 527
From: Clouds Over California
Default Re: Supercharger Question(Dip stick pops out) (Duck916)

I guess everybody has forgotten my post that was almost identical to this last November. Do a compression check....you will find you have busted pistons. If I am wrong and doubt that I am..its your lucky day. But I have seen it all when it comes to this. There is only one thing that can make your dipstick pop up an inch and spray oil like a sprinkler head..and it is not your PCV at all! :nonod:

I was running 10lbs of boost when this happened and it never happened before the pistons broke..so if the PCV was the problem it would have happened then. Since my motor replacement I have been running 12-14lbs of boost with no modified PCV (until recently for experimentation) and the dipstick never has popped...same old dipstick as before..the crankase is being pressurized because your ringlans are busted and huge amounts of blow by are pressurizing your crankcase and blowing out your dipstick..if you have a vent line from the valve cover to the inlet to the blower..check it for oil too. Like I said I really hope I am wrong..but I forsee forged pistons going in your car soon.


[Modified by Shinobi'sZ, 8:35 AM 3/19/2003]


[Modified by Shinobi'sZ, 8:39 AM 3/19/2003]
Reply
Old Mar 19, 2003 | 11:37 AM
  #7  
vetterdstr's Avatar
vetterdstr
Team Owner
20 Year Member
 
Joined: Mar 1999
Posts: 28,753
Likes: 9
From: San Jose/Bear Valley CA
CA Events Coordinator
Default Re: Supercharger Question(Dip stick pops out) (Shinobi'sZ)

You know what... you are right... for some reason... I read that post so fast that I skipped over the part about oil all over the engine... :(

Dude, you busted your engine... Shinobi is right on this one! :yesnod:

vetterdstr :cheers:
Reply
Old Mar 19, 2003 | 01:08 PM
  #8  
C5-VERT's Avatar
C5-VERT
Le Mans Master
Supporting Lifetime
20 Year Member
 
Joined: Aug 2001
Posts: 6,071
Likes: 297
From: Savannah GA
Cruise-In IV Veteran
Default Re: Supercharger Question(Dip stick pops out) (Shinobi'sZ)

I guess everybody has forgotten my post that was almost identical to this last November. Do a compression check....you will find you have busted pistons. If I am wrong and doubt that I am..its your lucky day. But I have seen it all when it comes to this. There is only one thing that can make your dipstick pop up an inch and spray oil like a sprinkler head..and it is not your PCV at all! :nonod:

I was running 10lbs of boost when this happened and it never happened before the pistons broke..so if the PCV was the problem it would have happened then. Since my motor replacement I have been running 12-14lbs of boost with no modified PCV (until recently for experimentation) and the dipstick never has popped...same old dipstick as before..the crankase is being pressurized because your ringlans are busted and huge amounts of blow by are pressurizing your crankcase and blowing out your dipstick..if you have a vent line from the valve cover to the inlet to the blower..check it for oil too. Like I said I really hope I am wrong..but I forsee forged pistons going in your car soon.


[Modified by Shinobi'sZ, 8:35 AM 3/19/2003]


[Modified by Shinobi'sZ, 8:39 AM 3/19/2003]
Yep, I remember predicting that unfortunately... :nonod:

I can see how the pcv minus a check valve would cause the dipstick to pop out but you cannot convince me that the pcv system would generate enough pressure to blow oil out all over the engine. I have had this whole dipstick blowout problem before which is how I predicted Shinobi's problem. Like I said with him, I hope you prove me wrong, but be prepared for the worst...


[Modified by C5-VERT, 1:12 PM 3/19/2003]
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

5 Best & 5 Most Overrated Corvette Track Packages of All Time!

 Joe Kucinski
story-1

Every 2027 Corvette Engine Explained

 Joe Kucinski
story-2

Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette

 Verdad Gallardo
story-3

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-4

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-5

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-6

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-7

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-8

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-9

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
Old Mar 19, 2003 | 02:13 PM
  #9  
angel95135's Avatar
angel95135
Instructor
10 Year Member
 
Joined: Feb 2002
Posts: 150
Likes: 0
From: San Jose CA
Default Re: Supercharger Question(Dip stick pops out) (bobroz)

Do you race your car, I was wondering how hard you have to drive your car to have this dipstsck problem.
Reply
Old Mar 19, 2003 | 02:17 PM
  #10  
vetterdstr's Avatar
vetterdstr
Team Owner
20 Year Member
 
Joined: Mar 1999
Posts: 28,753
Likes: 9
From: San Jose/Bear Valley CA
CA Events Coordinator
Default Re: Supercharger Question(Dip stick pops out) (angel95135)

To boost your crank case and break your pistons, all you have to do is step on the gas for an extended time period. You dont have to race the car to do it. When you install the S/C install a one way check valve before ever starting the engine. This way you cant boost the Crank case. I have a couple extra valves laying around...

vetterdstr :cheers:
Reply
Old Mar 19, 2003 | 02:27 PM
  #11  
Shinobi'sZ's Avatar
Shinobi'sZ
Le Mans Master
Veteran: Navy
25 Year Member
All Eyes On Me
Top Answer: 1
 
Joined: Sep 2000
Posts: 6,976
Likes: 527
From: Clouds Over California
Default Re: Supercharger Question(Dip stick pops out) (C5-VERT)

Yep C5-VERT told me straight up and although I didn't want to believe it, it was true. This is why I basically commented to you as Vert did to me. Sorry. The Tune really is important on a S/C, not enough fuel and too much timing combined with boost spells distruction. The Hyperuetic Pistons were never designed for boost, the clearancs are very tight because the Pistons do no expand..they are a hard but brittle piston..my ring lans were broken in 1.5-2" chunks. Even cars with good PCM tuning have broken pistons..although the application I am thinking of had higher compression than a Z06, his motor lasted about 9 mos. Then the pistons broke. To run a S/C and make it correct, the boost has to be low or as recommended by ATI (w/ a good tune too) or Forged Pistons should be used at a minimum. The problem with driving it until it breaks is the block maybe damaged if the broken lans scar the block.
Did you change the pully that came with your ATI kit??????
Reply
Old Mar 19, 2003 | 02:31 PM
  #12  
angel95135's Avatar
angel95135
Instructor
10 Year Member
 
Joined: Feb 2002
Posts: 150
Likes: 0
From: San Jose CA
Default Re: Supercharger Question(Dip stick pops out) (vetterdstr)

vettesdstr, I better install that one way check valve then. Can you give details on how it works and where to install it . How this check valve looks like.
IS this solution will also prevent a cracked piston or its is a different case.
Reply
Old Mar 19, 2003 | 05:28 PM
  #13  
vetterdstr's Avatar
vetterdstr
Team Owner
20 Year Member
 
Joined: Mar 1999
Posts: 28,753
Likes: 9
From: San Jose/Bear Valley CA
CA Events Coordinator
Default Re: Supercharger Question(Dip stick pops out) (angel95135)

I will look for pics that I can post with instructions. In the meantime if anyone else has them feel free to step up and post the info...

vetterdstr :cheers:
Reply
Old Mar 19, 2003 | 11:07 PM
  #14  
steve keen's Avatar
steve keen
Instructor
 
Joined: Nov 2002
Posts: 239
Likes: 0
From: henderson ky
Default Re: Supercharger Question(Dip stick pops out) (vetterdstr)

you can buy them from ATR or anyone that sell"s turbo buick parts.this is a common item,what I did is hooked two of the pvc mods inline{two water traps}and ran them to the air bridge on the S/C {my rad is lowered and has an air bridge on the s/c inlet}the faster the s/c spins the more vaccum it sucks,BEWARE you will have to keep an eye on the traps,if they got full of oil it will go directly into the s/c and plumbing,then motor,this is what works for me and NO chance of pressure in the crankcase,possibly vaccum,will have to get a gauge on it and confirm that thought,hope this helps,thanks steve :seeya
Reply
Old Mar 20, 2003 | 06:53 AM
  #15  
bobroz's Avatar
bobroz
Thread Starter
Instructor
10 Year Member
 
Joined: Aug 2001
Posts: 101
Likes: 0
From: Cos Cob CT
Default Re: Supercharger Question(Dip stick pops out) (bobroz)

Thanx for all the imput, The car had heads and cam installed last year from The Vette Doctors and then they installed the supercharger. The car seems to run fine. I don't race the car and it only happens when I push the accelerator to the floor. I'm running 6PDS of boost. I sure hope I don't need a new motor :mad
Reply
Old Mar 20, 2003 | 08:05 AM
  #16  
vetterdstr's Avatar
vetterdstr
Team Owner
20 Year Member
 
Joined: Mar 1999
Posts: 28,753
Likes: 9
From: San Jose/Bear Valley CA
CA Events Coordinator
Default Re: Supercharger Question(Dip stick pops out) (bobroz)

yeah, needing a new motor would really suck! let us know what happens!

vetterdstr :cheers:
Reply
Old Mar 20, 2003 | 01:49 PM
  #17  
bobroz's Avatar
bobroz
Thread Starter
Instructor
10 Year Member
 
Joined: Aug 2001
Posts: 101
Likes: 0
From: Cos Cob CT
Default Re: Supercharger Question(Dip stick pops out) (RobsC5)

I just got off the phone w/ Dennis from The Vette Doctors. Im going to bring it in next week for a compression test. I will let you guys know what happens. Dennis and Carm have always been more than fair. They are real stand up guys
Reply
Old Mar 20, 2003 | 07:58 PM
  #18  
Waterfreak's Avatar
Waterfreak
Racer
 
Joined: Sep 2002
Posts: 460
Likes: 1
From: Daytona Beach FL
Default Re: Supercharger Question(Dip stick pops out) (bobroz)

I had that very thing happen to my after installing my intake, intake manifold, headers, etc. I was on the dyno and the dip blew and oil followed. I added additional breathers to the valve covers that run down dash 16 lines to catch cans w/breather filters on top. I had it on the dyno three times since this fix and no more problems. If you look at a regular c5, it has three lines for breathing/pcv. However, the Z06 only has one very small breather that runs to the throttle body.
Reply

Get notified of new replies

To Supercharger Question(Dip stick pops out)





All times are GMT -4. The time now is 12:09 PM.

story-0
5 Best & 5 Most Overrated Corvette Track Packages of All Time!

Slideshow: The 5 best and 5 most overrated Corvette track packages ever.

By Joe Kucinski | 2026-06-09 12:46:45


VIEW MORE
story-1
Every 2027 Corvette Engine Explained

Slideshow: Every 2027 Corvette engine explained

By Joe Kucinski | 2026-06-09 12:16:31


VIEW MORE
story-2
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette

Slideshow: A Jaguar designer's personal project imagines what a modern front-engined Corvette might look like if Chevrolet revisited the golden age of the Stingray.

By Verdad Gallardo | 2026-06-08 19:53:43


VIEW MORE
story-3
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-4
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-5
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-6
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-7
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-8
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-9
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE