C3 General General C3 Corvette Discussion not covered in Tech
Sponsored by:
Sponsored by:

68 heater core

Thread Tools
 
Search this Thread
 
Old Nov 8, 2012 | 08:51 PM
  #1  
joshtried's Avatar
joshtried
Thread Starter
Burning Brakes
15 Year Member
 
Joined: Mar 2008
Posts: 1,038
Likes: 39
From: Denver, CO
St. Jude Donor '08-'09-'10
Default 68 heater core

So, i had antifreeze leaking onto the passenger side floor, and came to the conclusion it was from the heater core... Out goes the old and in comes the new. The problem is, it is still leaking. Anyone have any idea why a brand new core (bought from Willcox) would be leaking?? Is it that common to buy a "new" broken core?
Reply
Old Nov 8, 2012 | 09:53 PM
  #2  
Willcox Corvette's Avatar
0Willcox Corvette
Former Vendor
 
Joined: Aug 2006
Posts: 76,656
Likes: 1,853
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
Default

Josh.. no it is not normal... I had a tech install one about a year ago and he bent the tube to tweak just a tiny bit while installing. When he did this instead of the tube bending it pulled it loose from the core. Now what he did was attempt to bend it with the end.. If you have to bend a tube you should always support it from above the solder connection to the core to prevent this from happening.... He knows better now....

I'm not saying this is what you did... by any means.. and boy what a PITA to remove again.

Send me a message to Support@Willcoxcorvette.com I'll be out of the office tomorrow but I'll check on my virtual network.

Boy.. that's a three hour job too.. I hate it..

Ernie
Reply
Old Nov 9, 2012 | 08:23 AM
  #3  
capevettes's Avatar
capevettes
CF Community Team
Supporting Lifetime
20 Year Member
Active Streak: 90 Days
Active Streak: 120 Days
Conversation Starter
 
Joined: Oct 2004
Posts: 19,371
Likes: 5,250
From: Cape Cod, Mass.
2025 C6 of the Year Finalist - Unmodified
2025 C8 Z06/7/E-Ray of the Year Finalist - Unmodified
2023 C3 of the Year Finalist - Unmodified
2021 C8 of the Year Finalist Unmodified
2020 Corvette of the Year Finalist (performance mods)
2019 C1 of Year Winner (performance mods)
2017 Corvette of the Year Finalist
2016 C2 of Year
2015 C3 of Year Finalist
Default

It's always a good idea to test the core before you install it. I have seen some leak. I just did one on my 65. It's a PITA as the dash has to come out. The core just started leaking on my 68. I wasn't up to another one this soon. I just by-passed it. The big block puts enough heat in that cockpit anyway.
Reply
Old Nov 9, 2012 | 08:50 AM
  #4  
marshal135's Avatar
marshal135
Safety Car
10 Year Member
Veteran: Marine Corps
Conversation Starter
Liked
 
Joined: Sep 2011
Posts: 4,120
Likes: 1,230
From: Madeira Beach, FL
2024 C8 of the Year Finalist - Unmodified
2024 C2 of the Year Finalist - Unmodified
2023 C2 of the Year Finalist - Unmodified
2020 C3 of the Year Finalist - Unmodified
Default

Mine is by passed to big a job right now.
Marshal
Reply
Old Nov 9, 2012 | 10:25 AM
  #5  
682XLR8's Avatar
682XLR8
Safety Car
Veteran: Army
20 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Dec 2005
Posts: 4,270
Likes: 20
From: Central Michigan
Default

Bought a new heater core from Corvette Central a number of years ago....broke the solder joint on one of the tubes and didn't catch it till I fired up the motor fortunately there was no carpet in the car yet

I had to take the core back out, take it to a radiator shop and have the tubes re-soldered and pressure checked....they did a great job and have had no problems since
Reply
Old Nov 9, 2012 | 11:39 AM
  #6  
GDaina's Avatar
GDaina
Race Director
Supporting Lifetime Gold
20 Year Member
 
Joined: Feb 1999
Posts: 16,978
Likes: 7
From: In Dreams There Is Truth Ohio
Default

many years ago I bought a new core and the fit was just horrible, so I took my old core and the new core the the rad shop and had them switch the tanks...perfect fit ...
Reply
Old Nov 10, 2012 | 02:22 AM
  #7  
joshtried's Avatar
joshtried
Thread Starter
Burning Brakes
15 Year Member
 
Joined: Mar 2008
Posts: 1,038
Likes: 39
From: Denver, CO
St. Jude Donor '08-'09-'10
Default

I took it to a local rad- shop today, and the said what yall said, i probably bent it on the install.. Guess thats what i get for asking the wife to help install this thing! I did the re-install by myself and viola!! no leak!
project creep keeps on moving now...
Reply
Old Nov 10, 2012 | 11:41 AM
  #8  
Manuel Azevedo's Avatar
Manuel Azevedo
Burning Brakes
 
Joined: Jan 2007
Posts: 1,057
Likes: 4
From: Concord Calif
Default

Originally Posted by joshtried
I took it to a local rad- shop today, and the said what yall said, i probably bent it on the install.. Guess thats what i get for asking the wife to help install this thing! I did the re-install by myself and viola!! no leak!
project creep keeps on moving now...

I probably should not say anything here as I don't know all the details and I don't want to know them. But still it sounded like a cheap comment to blame the wife on your problem when you don;t even know what happened!
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 Nov 10, 2012 | 12:29 PM
  #9  
joshtried's Avatar
joshtried
Thread Starter
Burning Brakes
15 Year Member
 
Joined: Mar 2008
Posts: 1,038
Likes: 39
From: Denver, CO
St. Jude Donor '08-'09-'10
Default

It was meant as a small joke. The rad shop said there was a crack in the solder on the lower neck. From what they said, it is an often cracked spot because that part doesnt really "bend". While installing i asked my wife to push gently on the box to push the core through the firewall. The original core has straight maybe 3" tubes. The replacement is angled with 5"-6" tubes. While applying pressure, i noticed her "jiggle" the box back and forth, probably from misunderstanding what i was trying to do (she gets frustrated quickly when she doesnt understand and wont just say she doesnt get it). At the time, i did not think a little movement would crack it. Now i know otherwise, and i know where the movement came from.
Reply
Old Nov 10, 2012 | 12:30 PM
  #10  
joshtried's Avatar
joshtried
Thread Starter
Burning Brakes
15 Year Member
 
Joined: Mar 2008
Posts: 1,038
Likes: 39
From: Denver, CO
St. Jude Donor '08-'09-'10
Default

Though it is still "possible" i received a bad core. That seems "less" likely, so i joked about the wife.
Reply

Get notified of new replies

To 68 heater core





All times are GMT -4. The time now is 05:55 AM.

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