64 Heater Core Replacement Question - Impala Tech
Heating & Cooling Heating, cooling & air conditioning

 
LinkBack Thread Tools
post #1 of 9 (permalink) Old 05-18-2019, 05:49 PM Thread Starter
 
 
Join Date: Jul 2015
Location: Wisconsin
Posts: 23
 
Garage
64 Heater Core Replacement Question

I have a leaky heater core on mt 64SS Impala without A/C. My question is how do the dash mat retaining plugs come out on the inside. There seems to be a hole down the center of them but no screw that I can find. Do you just pull them out? I don't want to wreck the dash mat because it's in perfect condition. I looked in the factory shop manual but it just says remove the plugs but not how to. Thanks for any help.
redrocket1953 is offline  
Sponsored Links
Advertisement
 
post #2 of 9 (permalink) Old 05-18-2019, 06:25 PM
Team Member
 
Join Date: Jan 2018
Location: Greenville, SC
Posts: 249
 
On my 68 its just speed nuts that hold the dash on, but you gotta get way up in there to get them off. Dash cluster, whatever radio you have, and glovebox liner all have to come out first.
68WASAGOODYEAR is offline  
post #3 of 9 (permalink) Old 05-18-2019, 07:31 PM
Moderator
 
Join Date: Jan 2006
Posts: 12,381
 
Some where barbed plastic that went in without any thought about removal. They have to be cut off under the washer head with dykes and pushed through. Then on reassembly you use a new hold down.

Big Dave
Big Dave is offline  
 
post #4 of 9 (permalink) Old 05-18-2019, 09:01 PM Thread Starter
 
 
Join Date: Jul 2015
Location: Wisconsin
Posts: 23
 
Garage
These look different than any I've ever seen before. Almost look like rubber bumpers. There are two on the inside of the car just below the heater box holding the mat to the toeboard area. I will get a photo tomorrow in the morning. If it matters this was a Canadian built car. Thanks again for the help.
redrocket1953 is offline  
post #5 of 9 (permalink) Old 05-19-2019, 10:37 AM Thread Starter
 
 
Join Date: Jul 2015
Location: Wisconsin
Posts: 23
 
Garage
Quote:
Originally Posted by redrocket1953 View Post
These look different than any I've ever seen before. Almost look like rubber bumpers. There are two on the inside of the car just below the heater box holding the mat to the toeboard area. I will get a photo tomorrow in the morning. If it matters this was a Canadian built car. Thanks again for the help.
This is what the fasteners look like. I did see the other end on the engine side of the firewall and they do look like those plastic barbed fasteners. Now to get the fender well out so I can see all the nuts. Thanks for the help.
Attached Thumbnails
Click image for larger version

Name:	002.jpg
Views:	29
Size:	47.3 KB
ID:	22366  
redrocket1953 is offline  
post #6 of 9 (permalink) Old 05-23-2019, 09:47 AM
 
 
Join Date: Feb 2013
Location: Illinois
Posts: 6
 
The only way to remove the original rubber plugs is to warm them with a heat gun. I do this with many old rubber plugs, etc. Be very careful you do not overheat and start a dash fire. It doesn't take too much warmth to wake them up. You need two people to carefully push, pull and prod them out. I have done this because the aftermarket ones are a hard plastic and will only cause grief trying to install them. Have fun
chevvyeddie is offline  
post #7 of 9 (permalink) Old 05-23-2019, 09:51 AM
 
 
Join Date: Feb 2013
Location: Illinois
Posts: 6
 
One more thing: the hole in the plug is for an installation tool. Did you ever see one of those rubber oil pan drain plugs? You push something inside and it stretches the plug. I made one from an old, damaged Phillips screwdriver by grinding the end round, like a pushrod end. That way you won't poke a hole when re-installing the plug. Still, remember they are old and need respect.
chevvyeddie is offline  
post #8 of 9 (permalink) Old 06-04-2019, 06:41 PM Thread Starter
 
 
Join Date: Jul 2015
Location: Wisconsin
Posts: 23
 
Garage
Quote:
Originally Posted by chevvyeddie View Post
One more thing: the hole in the plug is for an installation tool. Did you ever see one of those rubber oil pan drain plugs? You push something inside and it stretches the plug. I made one from an old, damaged Phillips screwdriver by grinding the end round, like a pushrod end. That way you won't poke a hole when re-installing the plug. Still, remember they are old and need respect.
Thanks for the tip. I'll try the heat to soften them up a little. I was wondering if that hole in the center was for putting them in.
redrocket1953 is offline  
post #9 of 9 (permalink) Old 06-04-2019, 08:09 PM
Senior Member
 
Join Date: Oct 2009
Location: Orange, CA
Posts: 1,332
Blog Entries: 34
 
My 64 has factory AC but removing the mat was not needed in my case.
(for some reason I can't post images like I used to so here are links to the pictures)

http://thecairns.com/Impala/IMG_2220.JPG

http://thecairns.com/Impala/IMG_2224.jpg

However, the strap that holds the heater core in place has screws that have to be accessed from the engine side. That means removing the fan and it's housing from the engine side. Or a lot of pounding, wiggling and wrestling (risking damage to your new core).

1964 Impala 4 door sedan

My Bloggy Thing: http://www.impalas.net/forums/blog.php?u=2285
dcairns is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Impala Tech forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome