C1 & C2 Corvettes General C1 Corvette & C2 Corvette Discussion, Technical Info, Performance Upgrades, Project Builds, Restorations

[C2] Approx Cost?

Thread Tools
 
Search this Thread
 
Old Aug 15, 2016 | 04:59 PM
  #1  
johngandersonjr's Avatar
johngandersonjr
Thread Starter
Racer
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Jan 2007
Posts: 489
Likes: 31
From: Hilbert WI
Default Approx Cost?

Wondering what the approx. cost would be to have someone replace, head gaskets, intake gaskets, valve seals, etc....?

I am starting to have issues when I let the car sit for a couple of days. When I start it up, it runs rough until I drive it down the road a 1/4-1/2 mile. Then it is fine


67 327/300.
Reply
Old Aug 15, 2016 | 05:11 PM
  #2  
63Corvette's Avatar
63Corvette
Le Mans Master
15 Year Member
 
Joined: Apr 2001
Posts: 9,556
Likes: 288
From: Granbury Texas
Default

Originally Posted by johngandersonjr
Wondering what the approx. cost would be to have someone replace, head gaskets, intake gaskets, valve seals, etc....?

I am starting to have issues when I let the car sit for a couple of days. When I start it up, it runs rough until I drive it down the road a 1/4-1/2 mile. Then it is fine


67 327/300.
John, on a C2 it is very easy to do it yourself. So, I would suggest that you pull your own heads, (check the torque specs etc) and call your local ppreferred speed shop. Ask for a quote for rebuilding the heads. Buy the parts, and reinstall them yourself. About $200 plus the machine shop labor
Reply
Old Aug 15, 2016 | 05:16 PM
  #3  
johngandersonjr's Avatar
johngandersonjr
Thread Starter
Racer
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Jan 2007
Posts: 489
Likes: 31
From: Hilbert WI
Default

Originally Posted by 63Corvette
John, on a C2 it is very easy to do it yourself. So, I would suggest that you pull your own heads, (check the torque specs etc) and call your local ppreferred speed shop. Ask for a quote for rebuilding the heads. Buy the parts, and reinstall them yourself. About $200 plus the machine shop labor
I actually with help from a friend who is a rebuilder put the heads together about 9-10 yrs ago. Unfortunately I have moved away and am not in contact much anymore. the heads were rebuild at that time with new bronze valve guides, new z28 springs as well as new retainers and hardened seats.

I had an issue with the heat riser being stuck shut for a few years when my father owned the car and wondering if that lead to the seals failing prematurely. When checking the plugs, the passenger side seems to be the culprit.

My issue would be removing and reinstalling the rocker gear, etc.... I have no idea what to do when it comes to that...

Also, would I need new Head Bolts or reuse them?

Last edited by johngandersonjr; Aug 15, 2016 at 05:19 PM.
Reply
Old Aug 15, 2016 | 05:49 PM
  #4  
Bowtyeguy's Avatar
Bowtyeguy
Le Mans Master
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Apr 2006
Posts: 7,033
Likes: 603
From: Limerick Pa
Default

I think you are going way over board in what you want. It could be a ton of easy things causing your problems. Why head gaskets? Is it over heating or leaking water into oil? Do you mean valve cover gaskets?

Do the plugs have oil on them or just black? Give us some more info before you tear it apart. At least do a compression test first.

Last edited by Bowtyeguy; Aug 15, 2016 at 05:51 PM.
Reply
Old Aug 15, 2016 | 06:01 PM
  #5  
jrm5657's Avatar
jrm5657
Melting Slicks
20 Year Member
Active Streak: 30 Days
Liked
Top Answer: 1
 
Joined: Jun 2001
Posts: 2,750
Likes: 724
From: Fountain Hills Arizona
2022 C2 of the Year Finalist - Modified
Default

Agree on doing a little more diagnostic work prior to tearing things apart. Valve guide seals can be installed easy without removing heads, exhaust manifolds, intake, etc. Need to figure out what the car is doing and then diagnosing properly.
Reply
Old Aug 15, 2016 | 06:01 PM
  #6  
johngandersonjr's Avatar
johngandersonjr
Thread Starter
Racer
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Jan 2007
Posts: 489
Likes: 31
From: Hilbert WI
Default

Originally Posted by Bowtyeguy
I think you are going way over board in what you want. It could be a ton of easy things causing your problems. Why head gaskets? Is it over heating or leaking water into oil? Do you mean valve cover gaskets?

Do the plugs have oil on them or just black? Give us some more info before you tear it apart. At least do a compression test first.
I figured head gaskets to do the valve seals.
Reply
Old Aug 15, 2016 | 06:12 PM
  #7  
johngandersonjr's Avatar
johngandersonjr
Thread Starter
Racer
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Jan 2007
Posts: 489
Likes: 31
From: Hilbert WI
Default

Originally Posted by Bowtyeguy
I think you are going way over board in what you want. It could be a ton of easy things causing your problems. Why head gaskets? Is it over heating or leaking water into oil? Do you mean valve cover gaskets?

Do the plugs have oil on them or just black? Give us some more info before you tear it apart. At least do a compression test first.
Plugs do not seem to be wet, just really black and full of particles.
Reply
Old Aug 15, 2016 | 06:19 PM
  #8  
johngandersonjr's Avatar
johngandersonjr
Thread Starter
Racer
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Jan 2007
Posts: 489
Likes: 31
From: Hilbert WI
Default

Here are pictures of the plugs. ones on left are from the drivers side and ones on right are passenger.

I guess a couple do seem wet.
Attached Images    

Last edited by johngandersonjr; Aug 15, 2016 at 06:20 PM.
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 Aug 15, 2016 | 07:07 PM
  #9  
GTOguy's Avatar
GTOguy
Race Director
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Apr 2015
Posts: 17,571
Likes: 3,460
From: Fresno California
Default

I would take the car to a mechanic and have him sort it out. Very unlikely a head/valve issue. Perhaps a valve seal on the one cylinder with the wet/oily plug....a simple on-car repair with no need to remove the head. I did head gaskets, intake, and valve covers/valve adjustment on my '61 on a Saturday for less than $40 in parts. I provided the labor. You need to have at least basic knowledge of engines and diagnostics before you start tearing things apart needlessly. If you don't, it's going to cost you. From your post, your best bet is taking it to a pro for a thorough looking over.
Reply
Old Aug 15, 2016 | 07:33 PM
  #10  
Frankie the Fink's Avatar
Frankie the Fink
Team Owner
 
Joined: Aug 2007
Posts: 58,061
Likes: 7,146
Army
Default

I don't know why you would go 'medieval' and start tearing major stuff off the motor for sooty plugs. What plugs are you using ? I've found the NGK-XR4 plugs to be the best for these cars after having run through a variety of other brands/heat ranges.

I agree - take it to a pro and get a proper diagnosis of what the issue might be. On my '63 it was valve seals soaking the plugs on start up. A fairly easy on-the-car fix and relatively cheap....
Reply
Old Aug 15, 2016 | 07:37 PM
  #11  
johngandersonjr's Avatar
johngandersonjr
Thread Starter
Racer
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Jan 2007
Posts: 489
Likes: 31
From: Hilbert WI
Default

Originally Posted by Frankie the Fink
I don't know why you would go 'medieval' and start tearing major stuff off the motor for sooty plugs. What plugs are you using ? I've found the NGK-XR4 plugs to be the best for these cars after having run through a variety of other brands/heat ranges.

I agree - take it to a pro and get a proper diagnosis of what the issue might be. On my '63 it was valve seals soaking the plugs on start up. A fairly easy on-the-car fix and relatively cheap....
I have R45S plugs. i put new ones in about 2 weeks ago and started having problems again within about 10 days or so. I try to drive it every day but sometimes I don't. if I wait about 2-3 days that is when I have the issues.
Reply
Old Aug 15, 2016 | 07:47 PM
  #12  
leif.anderson93's Avatar
leif.anderson93
Le Mans Master
10 Year Member
Veteran: Air Force
Community Builder
Top Answer: 5
 
Joined: Feb 2014
Posts: 8,912
Likes: 5,460
From: Richardson Texas
Default

Originally Posted by johngandersonjr
I have R45S plugs. i put new ones in about 2 weeks ago and started having problems again within about 10 days or so. I try to drive it every day but sometimes I don't. if I wait about 2-3 days that is when I have the issues.
John,
I'm betting on valve seals. Truly a simple task for a DIYer. But, certainly, if you're not comfortable doing this take it to a professional and have the work done. Shouldn't be more than a two hour job for someone who knows what they're doing.
Reply
Old Aug 15, 2016 | 07:50 PM
  #13  
Bowtyeguy's Avatar
Bowtyeguy
Le Mans Master
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Apr 2006
Posts: 7,033
Likes: 603
From: Limerick Pa
Default

Are you using oil? Is it blowing out the tail pipe? Is the carb running really rich on the side with the sooty plugs? Valve seals can be done without taking the heads off. Have it diagnosed.
Reply
Old Aug 15, 2016 | 07:52 PM
  #14  
johngandersonjr's Avatar
johngandersonjr
Thread Starter
Racer
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Jan 2007
Posts: 489
Likes: 31
From: Hilbert WI
Default

Originally Posted by Bowtyeguy
Are you using oil? Is it blowing out the tail pipe? Is the carb running really rich on the side with the sooty plugs? Valve seals can be done without taking the heads off. Have it diagnosed.
I am using some oil. Tailpipe is pretty black.

I would say 1/2 qt every 500 miles or so.

Side with sooty plugs is the side with heat riser as well. Heat rise is working. Replaced it about 1000 miles ago.

Also. Carb diesels when shut off.
Attached Images  

Last edited by johngandersonjr; Aug 15, 2016 at 07:55 PM.
Reply
Old Aug 16, 2016 | 06:31 AM
  #15  
Bowtyeguy's Avatar
Bowtyeguy
Le Mans Master
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Apr 2006
Posts: 7,033
Likes: 603
From: Limerick Pa
Default

I would take it to someone you can trust to check timing and carb. I dont like the right side bank of the plugs but a couple things can be causing that. They can do valve seals by plugging air into the cylinder without taking the heads off and that will save you money. I would start with a compression test.
Reply
Old Aug 17, 2016 | 03:31 PM
  #16  
sub006's Avatar
sub006
Race Director
10 Year Member
 
Joined: Jul 2005
Posts: 13,685
Likes: 61
Default

I've had excellent results with NGK plugs in all kinds of vehicles. No matter what it says on the body stickers, MANY NASCAR teams and NHRA record holders won't use anything else.
Reply
Old Aug 18, 2016 | 06:31 AM
  #17  
Bowtyeguy's Avatar
Bowtyeguy
Le Mans Master
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Apr 2006
Posts: 7,033
Likes: 603
From: Limerick Pa
Default

Its not a plug problem, its the right side bank fouling the plugs just on that side. Is the carb dripping down after you turn it off and gas just laying in manifold? Needs a person that can dheck it out but dont pull the heads.
Reply

Get notified of new replies

To Approx Cost?





All times are GMT -4. The time now is 05:58 PM.

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 11:09:53


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