C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Oil leaking

Thread Tools
 
Search this Thread
 
Old Mar 6, 2014 | 08:23 AM
  #1  
organcory's Avatar
organcory
Thread Starter
Advanced
 
Joined: Mar 2010
Posts: 50
Likes: 0
From: West Columbia SC
Default Oil leaking

It appears that my valve cover gaskets are both leaking a little bit of oil, as it starts smoking on both sides. My question is how easy to replace these gaskets and what does everyone prefer for replacement. I called the shop and they said FO hundred, I was like yeah whatever. I know its usually a few bolts and clean up the old junk, and replace with the new one.
Reply
Old Mar 6, 2014 | 10:03 AM
  #2  
John A. Marker's Avatar
John A. Marker
Le Mans Master
15 Year Member
 
Joined: Mar 2004
Posts: 5,107
Likes: 171
From: Dublin CA
Default

It is not too difficult. Just many things to move out of the way to get to the driver's side. I also believe the 86 also has the EGR cross over tube on the passenger's side that is a PITA to remove and re-install. It uses a crush ring around the pipe flange to hole it in place.

I suggest that you use Fel-Pro gaskets.
Reply
Old Mar 6, 2014 | 10:25 AM
  #3  
organcory's Avatar
organcory
Thread Starter
Advanced
 
Joined: Mar 2010
Posts: 50
Likes: 0
From: West Columbia SC
Default

Originally Posted by John A. Marker
It is not too difficult. Just many things to move out of the way to get to the driver's side. I also believe the 86 also has the EGR cross over tube on the passenger's side that is a PITA to remove and re-install. It uses a crush ring around the pipe flange to hole it in place.

I suggest that you use Fel-Pro gaskets.


Ok, that sounds good. Now is anything that will need to be replaced when removing? This crush ring, is that something that is easily removed and replaced.
Reply
Old Mar 6, 2014 | 06:28 PM
  #4  
DinoBob's Avatar
DinoBob
Melting Slicks
15 Year Member
Liked
Loved
Top Answer: 1
 
Joined: Apr 2011
Posts: 3,496
Likes: 475
From: New Jersey
Default

I hear it is NOT easy. I have a 1986 and am dreading it b/c of that.
Reply
Old Mar 7, 2014 | 06:50 AM
  #5  
organcory's Avatar
organcory
Thread Starter
Advanced
 
Joined: Mar 2010
Posts: 50
Likes: 0
From: West Columbia SC
Default

Originally Posted by DinoBob
I hear it is NOT easy. I have a 1986 and am dreading it b/c of that.

Well hope not, I just ordered the gasket set, and will pick up today. I may start tearing in to it this weekend, and hope I get it back together.

If anyone else has any hints,tips or tricks please let me know.
Reply
Old Mar 7, 2014 | 08:08 AM
  #6  
WW7's Avatar
WW7
Le Mans Master
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Aug 2007
Posts: 8,735
Likes: 412
From: WV
Default

Originally Posted by organcory
Well hope not, I just ordered the gasket set, and will pick up today. I may start tearing in to it this weekend, and hope I get it back together.

If anyone else has any hints,tips or tricks please let me know.
It's not a hard job, just alot of things to move to get to the covers...A few hints I can give, to recrimp the small clamp on the egr tube, use a pair of cutters to slide down and squeeze the ring closed to secure the clamp..They make a speciel tool for the job, but the cutters seem to work ok...Just don't squeeze so hard you cut the ring in half... .Also when tightening the bolts on the valve covers, just go down until the bolts touch, then go about a half turn more.. The mistake alot of guys make is, they over tighten the valve cover bolts deforming the gaskets causing a leak. If you do it this way and you get a small leak, wipe off the oil, tighten them all another 1/8th to 1/4 turn, and run the car again to see if it leaks.Taking the bolts down a small amount at a time will guaranty you don't deform the gaskets while sealing the valve covers.....Good luck.....WW

Last edited by WW7; Mar 7, 2014 at 08:13 AM.
Reply
Old Mar 9, 2014 | 06:09 PM
  #7  
organcory's Avatar
organcory
Thread Starter
Advanced
 
Joined: Mar 2010
Posts: 50
Likes: 0
From: West Columbia SC
Default

ok I am hoping I haven't bitten off more than I can chew. I of course have all the bolts removed and the valve covers loose, but of course it is all being a pita. What needs to be removed from each side to get these damn things off. I see there is some metal tube over the valve cover on the passenger side. It has a reagular screw head clamp on the bottom, but it seems to be at an angle that is hard to get to. Also I was trying to remove the windshield wiper motor cover but it seems to be unable to be removed without removing a bunch of stuff. Any help would be great.
Reply
Old Mar 9, 2014 | 07:42 PM
  #8  
peyc2's Avatar
peyc2
Burning Brakes
Supporting Gold
10 Year Member
Conversation Starter
All Eyes On Me
Liked
 
Joined: Oct 2012
Posts: 882
Likes: 52
Default

I too have to do the same on my 1985, I have the same slight oil burn off when starting. Is it advisable to disconnect the battery?
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

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

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

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

 Michael S. Palmer
story-7

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-8

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-9

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
Old Mar 10, 2014 | 02:14 AM
  #9  
Cliff Harris's Avatar
Cliff Harris
Race Director
15 Year Member
 
Joined: Apr 2002
Posts: 10,036
Likes: 346
From: Anaheim CA
Default

Well, since I just did this tonight...

On the driver's side you have to back off on the bottom bolt on the A.I.R. pump (I cut mine off years ago so I don't have to do this any more). The rear of the valve cover hits the spark plug wire bracket on the back of the head. The first time I removed mine I pried the valve cover to the rear enough to clear the rear of the A.I.R. pump bracket. Be aware that there is a metal baffle for the PCV valve inside the valve cover that hits the rocker arms and limits how much you can move it.

On the passenger side, unbolt the EGR tube at the intake manifold. It is corrugated flexible tubing and will bend out of the way. You do NOT have to remove the Oetiker clamp at the bottom. You need to remove the "steam tube" rubber hose also. I have to take the top two studs out (inverse Torx size E6) to allow the valve cover to move far enough up and to the rear to clear the hose behind the AC compressor for the A.I.R. injection. i have taken the valve cover studs out with a small socket, but after rounding a few off I bought new studs and an inverse Torx socket set.
Reply

Get notified of new replies

To Oil leaking





All times are GMT -4. The time now is 10:06 AM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE