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:

PVC Question

Old Sep 1, 2010 | 06:13 PM
  #1  
Dale002's Avatar
Dale002
Thread Starter
Melting Slicks
All Eyes On Me
Liked
Loved
Community Favorite
 
Joined: Jul 2010
Posts: 3,479
Likes: 92
From: Between Tally and Gatorville ,Florida
Default PVC Question

I have a 98 with the old type PVC system ( non mod )
The PVC boot is torn and I was researching here on options.
Mostly of the links and photos are now gone, as most post are old.
Can anyone giveme options. Do I have to buy a new boot or has any one relocated the pvc valve. Like installing one with nipples on both ends.
Also I'm not sure how much good it does sitting on it side.
I always thought they had to be installed up right so that they can close when engine not running. I know they are spring loaded but if you takeput then on their side the plunger seems to drop cause it not to completly close.
Reply
Old Sep 1, 2010 | 07:57 PM
  #2  
dgrant3830's Avatar
dgrant3830
Tech Contributor
10 Year Member
 
Joined: Dec 2006
Posts: 10,962
Likes: 29
From: Van Buren Arkansas
Wounded Warrior Escort '11
Default

It sits on its side normally. The heat cable or what looks like a lagre ground strap should remain on there as well as it provides heat to the PCV valve. The usual failure is the connection tube from the PCV valve to the intake. It'll get holes in it as well as collapse.
Reply
Old Sep 1, 2010 | 08:28 PM
  #3  
Dale002's Avatar
Dale002
Thread Starter
Melting Slicks
All Eyes On Me
Liked
Loved
Community Favorite
 
Joined: Jul 2010
Posts: 3,479
Likes: 92
From: Between Tally and Gatorville ,Florida
Default

Originally Posted by dgrant3830
It sits on its side normally. str The heat cable or what looks like a lagre groundap should remain on there as well as it provides heat to the PCV valve. The usual failure is the connection tube from the PCV valve to the intake. It'll get holes in it as well as collapse.
The heat cable or what looks like a lagre ground

I don't know what this is.
Reply
Old Sep 2, 2010 | 09:31 AM
  #4  
dgrant3830's Avatar
dgrant3830
Tech Contributor
10 Year Member
 
Joined: Dec 2006
Posts: 10,962
Likes: 29
From: Van Buren Arkansas
Wounded Warrior Escort '11
Default

There should be a large cable type thing. Sort of looks like a grounding cable for electrical. It also supports the PCV valve with a clamp at the end which attaches to the valve itself. I don't have any pictures to show you but I'm sure several people here do, or do a search for it. Its is mostly for heat transfer to assist the PCV valve in warming up quickly by transferring heat from the head to it. Now if you go buy a new PCV valve from a dealer, it'll come with all of the tubes and the valve. Last I saw it, it was like $99 but probably higher now. One of those tubes routes around the rear of the intake manifold from the driver's side valve cover...pita to put in but I did this on my '99 as I found it was decaying back there. I didn't want any oil blow-by spraying all over the rear of the engine.
Reply
Old Sep 2, 2010 | 09:46 AM
  #5  
lucky131969's Avatar
lucky131969
Tech Contributor
15 Year Member
Active Streak: 30 Days
Community Builder
Liked
 
Joined: Jan 2007
Posts: 19,470
Likes: 1,170
From: Dyer, IN
Default

Originally Posted by dgrant3830
There should be a large cable type thing. Sort of looks like a grounding cable for electrical. It also supports the PCV valve with a clamp at the end which attaches to the valve itself. I don't have any pictures to show you but I'm sure several people here do, or do a search for it. Its is mostly for heat transfer to assist the PCV valve in warming up quickly by transferring heat from the head to it. Now if you go buy a new PCV valve from a dealer, it'll come with all of the tubes and the valve. Last I saw it, it was like $99 but probably higher now. One of those tubes routes around the rear of the intake manifold from the driver's side valve cover...pita to put in but I did this on my '99 as I found it was decaying back there. I didn't want any oil blow-by spraying all over the rear of the engine.
Reply
Old Sep 2, 2010 | 09:48 AM
  #6  
lucky131969's Avatar
lucky131969
Tech Contributor
15 Year Member
Active Streak: 30 Days
Community Builder
Liked
 
Joined: Jan 2007
Posts: 19,470
Likes: 1,170
From: Dyer, IN
Default

Originally Posted by Dale002
I always thought they had to be installed up right so that they can close when engine not running.
There is a spring within........it does not rely on gravity.
Reply
Old Sep 2, 2010 | 03:36 PM
  #7  
Dave68's Avatar
Dave68
Race Director
20 Year Member
Liked
 
Joined: Dec 2000
Posts: 19,304
Likes: 85
From: San Diego CA
Default

I'm not sure if yours is identical to mine, but here's the PCV replacement procedure I wrote a while back.

http://www.conceptualpolymer.com/PCV...eplacement.htm
Reply
Old Sep 2, 2010 | 05:57 PM
  #8  
SPS's Avatar
SPS
Instructor
10 Year Member
 
Joined: Jul 2001
Posts: 133
Likes: 2
From: Winsdor ON
Default

On my 98 the rubber boot that hold the PVC valve tore from the main tube. Dealer could only offer me the whole tube assembly at over a hundred dollers. So I went to a big box hardware store and bought a couple of brass fittings. Modified them a little so a PVC valve would fit snugly in it, and spliced it into the original line. Its a little big (and hokey), but it works. There was no "ground strap" on mine. I remember thinking at the time, that it should have been secured. I taped my up to some other hoses to hold in in place.
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 Sep 2, 2010 | 09:44 PM
  #9  
dgrant3830's Avatar
dgrant3830
Tech Contributor
10 Year Member
 
Joined: Dec 2006
Posts: 10,962
Likes: 29
From: Van Buren Arkansas
Wounded Warrior Escort '11
Default

Originally Posted by lucky131969
Thank You Lucky. I don't have the manuals any more but know this setup real well as my connection tube to the intake developed holes in it which resulted in surging, loss of mpg and so on.
Reply
Old Sep 2, 2010 | 11:36 PM
  #10  
Dale002's Avatar
Dale002
Thread Starter
Melting Slicks
All Eyes On Me
Liked
Loved
Community Favorite
 
Joined: Jul 2010
Posts: 3,479
Likes: 92
From: Between Tally and Gatorville ,Florida
Default

Originally Posted by dgrant3830
Thank You Lucky. I don't have the manuals any more but know this setup real well as my connection tube to the intake developed holes in it which resulted in surging, loss of mpg and so on.
My system is not set up like the picture.
The pcv is located half way on the right valve cover,where the number 1 points to and it's in a similar rubber
holder but with no cable attached to it.
It also has a hoses from the back of both valve covers.
I'm understanding that I can't buy just the pcv rubber holder.
I'll need to invent something to hold the original pcv or maybe buy one with 5/16 nipple on both ends and eleminate the rubber holder.
I have very little oil in the intake.
Just a light sheen,no puddles so i'm not really worry about the oil issue that some have. When I bought the car I drove it 900 miles home , it used no oil.
Reply
Old Sep 3, 2010 | 04:54 PM
  #11  
dgrant3830's Avatar
dgrant3830
Tech Contributor
10 Year Member
 
Joined: Dec 2006
Posts: 10,962
Likes: 29
From: Van Buren Arkansas
Wounded Warrior Escort '11
Default

The dealer only sells the entire tube assembly. The normal for your car is a hose going from the driver's side valve cover that wraps around the rear of the intake and connects to the other valve cover, splitting off to the PCV valve which then connects to the intake as shown on lucky's diagram.
Reply

Get notified of new replies

To PVC Question



Thread Tools
Search this Thread

All times are GMT -4. The time now is 03:43 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