MonteCarloSS.com
MonteCarloSS.com

CELEBRATING 20 YEARS!

Previous Thread
Next Thread
Print Thread
Page 1 of 2 1 2
#1013750 - 10/05/14 10:19 PM heater core repair or replace???  
Joined: Aug 2014
Posts: 247
Keithss Offline
Member
Keithss  Offline
Member

Joined: Aug 2014
Posts: 247
Jackson,mi
The title just about says it all.
My heater core is leaking and I was trying to decide weather to have it repaired or replace it. I have it out of the car now. After looking on line I see there are a number of makers, any where for $25 to $65. I know you get what you pay for, but has anyone had any experience with a manufacture, or should I just get mine repaired locally?
Keith

#1013752 - 10/05/14 10:52 PM Re: heater core repair or replace??? [Re: Keithss]  
Joined: Apr 2006
Posts: 3,552
GuysMonteSS Offline
10+ Year
GuysMonteSS  Offline
10+ Year
Member

Joined: Apr 2006
Posts: 3,552
Kentville,Nova Scotia
I don't think they can be repaired,but I could be wrong.
I have replaced them before,and it is a PITA.
If you don't really need it,I would take it out and get rid of the heater/ac "suitcase".
Guy


GuysMonteSS '86 SS,513 BBC,AFR Heads,UDHarold/Bullet Custom Solid Roller Cam,706 lift,255/263 @ .050,Jesel Shaft Rockers,Balanced & Blueprinted,Doug Nash 4+1 5 Speed,Hurst In-Line Shifter,Ford 9 Inch Rear,SC&C Street Comp Stage 2+ Front End Kit...
#1013753 - 10/05/14 10:54 PM Re: heater core repair or replace??? [Re: Keithss]  
Joined: Jan 2004
Posts: 683
Silver8M86 Offline
Member
Silver8M86  Offline
Member

Joined: Jan 2004
Posts: 683
Suffolk, VA
Ive heard a lot of forum members having problems with replacements having a short life span. Not a huge problem in this car since its an easy replacement compared to an import where you have to dissassemble the whole dash.

#1013754 - 10/05/14 11:09 PM Re: heater core repair or replace??? [Re: Silver8M86]  
Joined: Apr 2006
Posts: 3,552
GuysMonteSS Offline
10+ Year
GuysMonteSS  Offline
10+ Year
Member

Joined: Apr 2006
Posts: 3,552
Kentville,Nova Scotia
Originally Posted By: Silver8M86
Ive heard a lot of forum members having problems with replacements having a short life span.


I've owned my Monte for half of its life,14 years now,and counting the heater core that was in it when I bought it,I'm now on # 4.And I'm quite certain the original wasn't in it when I bought it.Who knows how many were put in it previous to my buying it.
So I guess you could say they have a short life span LOL
Guy


GuysMonteSS '86 SS,513 BBC,AFR Heads,UDHarold/Bullet Custom Solid Roller Cam,706 lift,255/263 @ .050,Jesel Shaft Rockers,Balanced & Blueprinted,Doug Nash 4+1 5 Speed,Hurst In-Line Shifter,Ford 9 Inch Rear,SC&C Street Comp Stage 2+ Front End Kit...
#1013759 - 10/06/14 12:23 AM Re: heater core repair or replace??? [Re: Keithss]  
Joined: Dec 1999
Posts: 11,711
86ttop Offline
20+ Year
86ttop  Offline
20+ Year
Member

Joined: Dec 1999
Posts: 11,711
Brooksville, Fl
replace it, I bought mine from NAPA.


Leo Paugh
It's not an attitude, it's just the way I am.
POW*MIA
You are not forgotten
If things improve with age, I must be approaching magnificent. thumbs
#1013767 - 10/06/14 03:28 AM Re: heater core repair or replace??? [Re: GuysMonteSS]  
Joined: Mar 2000
Posts: 5,552
upflying Offline
20+ Year
upflying  Offline
20+ Year
Member

Joined: Mar 2000
Posts: 5,552
Reno, NV
Originally Posted By: GuysMonteSS
I have replaced them before,and it is a PITA.
Guy

Heater core R&R in the Monte is very easy compared to cars with core hidden behind the dash.


86 MCSS Notchback coupe, LS3, 4L65E, QP 9", Eaton Truetrac, 4 wheel disc, column shift, Dakota Digital, silver with maroon bench interior

#1013770 - 10/06/14 04:40 AM Re: heater core repair or replace??? [Re: Keithss]  
Joined: Mar 2012
Posts: 190
phils_super sport Offline
Member
phils_super sport  Offline
Member

Joined: Mar 2012
Posts: 190
creedmoor,nc
replace it.i got mine from autozone about 4 yrs ago and havent had any problems with it yet.


#1013773 - 10/06/14 06:31 AM Re: heater core repair or replace??? [Re: Keithss]  
Joined: Jan 2013
Posts: 370
Stig Offline
Member
Stig  Offline
Member

Joined: Jan 2013
Posts: 370
Midlothian VA
Heater core replacement in our cars is pretty easy, but is a bit time consuming. I did mine in a few hours, but I also work a bit slowly and take my time.



85 Monte Carlo SS(Sold)
91 GMC Syclone (Sold)
95 Subaru Impreza (Sold)
#1013775 - 10/06/14 10:55 AM Re: heater core repair or replace??? [Re: Keithss]  
Joined: Apr 2014
Posts: 529
mainer Offline
Member
mainer  Offline
Member

Joined: Apr 2014
Posts: 529
new gloucester, ME
I can't believe it even came up for discussion , replace it. you couldn't get it fixed as cheap as a new one .

#1013796 - 10/06/14 03:26 PM Re: heater core repair or replace??? [Re: GuysMonteSS]  
Joined: Jan 2004
Posts: 683
Silver8M86 Offline
Member
Silver8M86  Offline
Member

Joined: Jan 2004
Posts: 683
Suffolk, VA

Quote:
I've owned my Monte for half of its life,14 years now,and counting the heater core that was in it when I bought it,I'm now on # 4.And I'm quite certain the original wasn't in it when I bought it.Who knows how many were put in it previous to my buying it.
So I guess you could say they have a short life span LOL
Guy


I wonder if coolant choice is playing a hand in this? There was a thread awhile back about prefered type of coolant I think about half the people said they use peak. I usually use Advance Auto Parts 50/50 whatever is cheapest. Honda/BMW makes some Blue coolant that is supposed to be more anti-corrosive maybe you could try that? I never bought into those fancy fluids...

#1013806 - 10/06/14 06:44 PM Re: heater core repair or replace??? [Re: Keithss]  
Joined: May 2007
Posts: 1,607
MattsMonte Offline
10+ Year
MattsMonte  Offline
10+ Year
Member

Joined: May 2007
Posts: 1,607
Johnston, Iowa
It is hard to find an old school radiator shop that will do the job well for a good price in our area. Replacing is as cheap as repairing so everyone replaces them. Original was copper. New one is aluminum. I figure if I flush the fluid like I should it will extend the life of both the radiator and the heater core. A less corrosive fluid would be better. Not a hard job to get to the heater core in our cars.


[Linked Image]

1988 MCSS T-Tops. Frame off restoration, 330HP 350 crate engine, 700R4 transmission.
#1013816 - 10/06/14 08:03 PM Re: heater core repair or replace??? [Re: Silver8M86]  
Joined: Nov 2012
Posts: 1,156
Ole Blue Offline
Member
Ole Blue  Offline
Member

Joined: Nov 2012
Posts: 1,156
Lugoff, SC
Originally Posted By: Silver8M86

Quote:
I've owned my Monte for half of its life,14 years now,and counting the heater core that was in it when I bought it,I'm now on # 4.And I'm quite certain the original wasn't in it when I bought it.Who knows how many were put in it previous to my buying it.
So I guess you could say they have a short life span LOL
Guy


I wonder if coolant choice is playing a hand in this? There was a thread awhile back about prefered type of coolant I think about half the people said they use peak. I usually use Advance Auto Parts 50/50 whatever is cheapest. Honda/BMW makes some Blue coolant that is supposed to be more anti-corrosive maybe you could try that? I never bought into those fancy fluids...
I have over 250,000 miles on my '85 and never replaced the heater core.
Maybe it was from the regular flushes and keeping 50% Prestone antifreeze and 50% water.

#1013847 - 10/06/14 11:34 PM Re: heater core repair or replace??? [Re: Keithss]  
Joined: May 2009
Posts: 685
RenoReno2 Offline
10+ Year
RenoReno2  Offline
10+ Year
Member

Joined: May 2009
Posts: 685
Chicago, IL
Couldn't you just braze the hole? if you don't have access to acetylene any welding shop could do it.


88 Monte SS
#1013868 - 10/07/14 03:23 AM Re: heater core repair or replace??? [Re: Keithss]  
Joined: Oct 2000
Posts: 1,148
WaSSted Offline
10+ Year
WaSSted  Offline
10+ Year
Member

Joined: Oct 2000
Posts: 1,148
Kennewick
I don't know if an original is available but that's what Im installing next time. I'm on number 4 as well. Thought I was smart buying one with life time warranty. Ya they gave me a new one, but it's not worth the time.


Kirk Herres
86' SC/SS, 350 Vortec, Rpm intake & Cam, 750cfm Edlebrock Carb, 3" True Duals w/Flowmasters and DR. Gas X pipe, All Autometer Gauges, B&M Hammer Shifter, Accel wires & ign., and 3.73 Posi.
#1013881 - 10/07/14 03:23 PM Re: heater core repair or replace??? [Re: RenoReno2]  
Joined: Jan 2004
Posts: 683
Silver8M86 Offline
Member
Silver8M86  Offline
Member

Joined: Jan 2004
Posts: 683
Suffolk, VA
Originally Posted By: RenoReno2
Couldn't you just braze the hole? if you don't have access to acetylene any welding shop could do it.


The problem I see with just brazing the hole, is you probably have a bunch of other internal areas where there is corrosion that just havnt worn through yet. So if you braze where it wears through you could have another faliure right away in another spot

#1013900 - 10/08/14 12:17 AM Re: heater core repair or replace??? [Re: Silver8M86]  
Joined: Jan 2007
Posts: 4,024
rons87mcss Offline
Member
rons87mcss  Offline
Member

Joined: Jan 2007
Posts: 4,024
PA
FWIW/FYI I know there is a ~ground~ wire installed on both factory a/c and factory non-a/c SS's since I had to change the heater core in both of the monte carlo ss's I've owned due to leaks that formed. I do remember reading somewhere(?) about the ground wire being there to help prevent the heater core from corrosion problems. Just figured I'd mention it in case someone has failed to reinstall it during replacement at one time or another. The factory non-a/c one in my 87SS was replaced about 7 years ago and is still holding up fine without any problems. The factory a/c 86SS was replaced about 1&1/2 year ago but since it is now sitting totaled I won't get a chance to see how it would have held up. Both heater cores were right around $30 if I remember correctly. I didn't feel either setup was that bad of a replacement, but of course I don't have a big block in either of my cars either(Guy) smile

#1018183 - 01/10/15 09:49 PM Re: heater core repair or replace??? [Re: Keithss]  
Joined: Dec 2007
Posts: 6,235
SSLance Offline
10+ Year
SSLance  Offline
10+ Year
Member

Joined: Dec 2007
Posts: 6,235
Peoria, AZ
When all of you were replacing your heater cores, did you run into this?

The little bracket on the top of the factory heater core that holds it in place will not fit on the replacement heater core I picked up today.

Here is how it fits on the factory core



The top of the new core is formed differently and the bracket won't fit it.





I wracked my brain for a half hour trying to come up with a fix to hold the core tight and couldn't. Any ideas?

The new core is from O'Reilly, Murray Heat Transfer - Heater Core Part Number: 94505 and the pics online show the correct top on the core.

The box says Murray #94505 but the core inside has a Vista Pro part # on it and Vista Pro Instructions.



Should I try a Napa or Autozone or something to try to get a correct one? I really wanted to button this up this weekend.


Lance
1985 Monte Carlo SS Street Car
#1018184 - 01/10/15 10:00 PM Re: heater core repair or replace??? [Re: Keithss]  
Joined: Dec 2007
Posts: 6,235
SSLance Offline
10+ Year
SSLance  Offline
10+ Year
Member

Joined: Dec 2007
Posts: 6,235
Peoria, AZ
Spectra 94505 pics look like this.



I called Autozone and asked for that part number, a store close to me has one in stock and they are holding it for me. Right as I'm about to hang up the guy says just so you know, the Autozone part # for that is 399088.

mad banghead

I'm not even sure if I want to drive over there now...


Lance
1985 Monte Carlo SS Street Car
#1018190 - 01/10/15 10:38 PM Re: heater core repair or replace??? [Re: Keithss]  
Joined: Feb 2006
Posts: 1,320
FrankOC Offline
10+ Year
FrankOC  Offline
10+ Year
Member

Joined: Feb 2006
Posts: 1,320
Cape Cod, MA
Hey Lance, I have the Spectra 94505 here in a box and it is identical to the pic above. I also installed the same one in my 85 few months ago and reused the stock bracket.


85 - ZZ383, 6-speed, 8.5"
70 - Stock, 35k miles
#1018200 - 01/10/15 11:26 PM Re: heater core repair or replace??? [Re: Keithss]  
Joined: Dec 2007
Posts: 6,235
SSLance Offline
10+ Year
SSLance  Offline
10+ Year
Member

Joined: Dec 2007
Posts: 6,235
Peoria, AZ
Autozone had the right one!!


Lance
1985 Monte Carlo SS Street Car
#1018201 - 01/10/15 11:28 PM Re: heater core repair or replace??? [Re: Keithss]  
Joined: Dec 2007
Posts: 6,235
SSLance Offline
10+ Year
SSLance  Offline
10+ Year
Member

Joined: Dec 2007
Posts: 6,235
Peoria, AZ
Frank, did you use anything to seal the top lid to the bottom box around the front edge? It didn't look like there was anything along that lip as a sealer when I took it apart.

I'm going to use some sort of RTV\weatherstrip combo to seal the back edge along the firewall.


Lance
1985 Monte Carlo SS Street Car
#1018204 - 01/10/15 11:41 PM Re: heater core repair or replace??? [Re: Keithss]  
Joined: Feb 2006
Posts: 1,320
FrankOC Offline
10+ Year
FrankOC  Offline
10+ Year
Member

Joined: Feb 2006
Posts: 1,320
Cape Cod, MA
I used black RTV all the way around.


85 - ZZ383, 6-speed, 8.5"
70 - Stock, 35k miles
#1018205 - 01/10/15 11:53 PM Re: heater core repair or replace??? [Re: Keithss]  
Joined: Dec 2007
Posts: 6,235
SSLance Offline
10+ Year
SSLance  Offline
10+ Year
Member

Joined: Dec 2007
Posts: 6,235
Peoria, AZ
Okay, that makes sense. Thanks...


Lance
1985 Monte Carlo SS Street Car
#1018206 - 01/11/15 12:11 AM Re: heater core repair or replace??? [Re: Keithss]  
Joined: Aug 2007
Posts: 1,774
88ss408 Offline
10+ Year
88ss408  Offline
10+ Year
Member

Joined: Aug 2007
Posts: 1,774
miramichi, NB
I also used the spectra one a couple months ago everything was like the stock
Piece. Fit was good reused the braket


1988 monte carlo ss 408 sbc
-----------------------------------------------------
1984 monte carlo cs 400 sbc
#1018207 - 01/11/15 12:13 AM Re: heater core repair or replace??? [Re: Keithss]  
Joined: Dec 2007
Posts: 6,235
SSLance Offline
10+ Year
SSLance  Offline
10+ Year
Member

Joined: Dec 2007
Posts: 6,235
Peoria, AZ
The small ground wire goes on the screw on the holddown bracket, right? Then out to the screw on the firewall?


Lance
1985 Monte Carlo SS Street Car
Page 1 of 2 1 2

Random Images
500/thumbs/m_a8afc26ccfb942708e1b30c63c303620.jpg
by gbodydude496ci
500/thumbs/MikePEI_s81.jpg
by MikePEI
1084/thumbs/imagejpeg_6_5.jpg
by 87SSon6s
1083/thumbs/250x250-0221111610.jpg
by PIMPC3692
500/thumbs/HPNX0045.JPG
by Intmdatr3
Help MonteCarloSS.com


Recent Contributors
finallySS
Authorized Vendors
Tell them you saw it
on MonteCarloSS.com!


CustomMonteSSParts.com
Dixie Monte Carlo Depot
GSI Interiors
HRpartsNstuff
Mikes Montes
Savitske Classic & Custom
Powered by UBB.threads™ PHP Forum Software 7.6.0