Body General body information and techniques for restoration, repairs, and modifications.

Heater-core leak...how big of a Pain to replace?

Old Feb 21, 2001 | 01:32 PM
  #1  
formcam's Avatar
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From: Pocatello,ID, United States
Heater-core leak...how big of a Pain to replace?

Is there a free site on the web giving instructions on heatercore replacement. Could you give me an Idea of the time required to complete this chore? How many busted Knuckels? etc.
Thanks for helping.


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89Formula 5.0 5speed with 3.45
4-disks
and a
70camino <---tacorocket!
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Old Feb 21, 2001 | 01:59 PM
  #2  
Trevor86TA's Avatar
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From: Saskatoon, Saskatchewan, Canada
Car: 86 Trans Am
Engine: 406
Transmission: TH350, 4200
Axle/Gears: Moser 9", 3.89
Yeh, the heater core is a huge pain in the *** . I pretty much had to rip every part of the dash apart just to find it (it is basically in the middle of the car, maybe a little to the passenger side) and some of the screws were nearly impossible to get at. But it can be done if you patience. If you have any quetions, you can e-mail me.
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Old Feb 21, 2001 | 02:28 PM
  #3  
Bill91Z
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on a bird I heard it was a little tougher than on a camaro. Took me an hour and a half first time ever doing it. If there ever is a next time, 30 minutes tops. Actually very easy, just a pain in the a$$. Worst part about it was the top bolt for the core cover (I did not use it when I reinstalled). Anyway, drain system, remove two heater hoses from inside engine compartment, remove lower dash cover, there you will see the heater core cover, remove those bolts (top one is a bastard and will take all the time), then, from what a remember, there should be a couple bolts holding in the core on a bracket type thing, remove those and pull out core. Reverse instructions to re-install.

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-Bill

-=ICON Motorsports=-

Modertor TPI board

Looking for 86/87 Turbo regal
1991 Z28 SOLD
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Old Feb 21, 2001 | 10:27 PM
  #4  
91B4C jacob's Avatar
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From: elkhorn NE usa
true true bill
Im not sure but on a bird but i got to the top bolt by removing the dash pad and the pass. side speaker. theres a post a while back that really went in to it well I will dig it up for ya then post a link


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Ya sure it is just an RS

B4Cyaa

1991 RS B4C
Former Nebraska Highway Patrol Car 1 of 3
305 TPI
WC T-5
Four Wheel Disk Brakes
Only Options
Rear Defrost
Am-Fm Radio
Red-int White-exe
One BA Of A 350 In The Works
Mods
Dynomax Cat Back (to hold me over till I got the $$$ for the Borla)
best 1/4mile Run of 14.92@94.83
with 145,000 on her
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Old Feb 21, 2001 | 10:31 PM
  #5  
91B4C jacob's Avatar
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From: elkhorn NE usa
https://www.thirdgen.org/messgboard/...ML/000248.html

here you go bud if you need any help give me a Email
Ps dont listen to the first few guys just read mine

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Ya sure it is just an RS

B4Cyaa

1991 RS B4C
Former Nebraska Highway Patrol Car 1 of 3
305 TPI
WC T-5
Four Wheel Disk Brakes
Only Options
Rear Defrost
Am-Fm Radio
Red-int White-exe
One BA Of A 350 In The Works
Mods
Dynomax Cat Back (to hold me over till I got the $$$ for the Borla)
best 1/4mile Run of 14.92@94.83
with 145,000 on her
Reply
Old Feb 22, 2001 | 01:17 AM
  #6  
gregz28's Avatar
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From: Ramstein AB, Germany
You can never go wrong with a Hayens manual. Took me 8 hours with two people. Never wanna do it again...

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91 Z28 305 tpi
plans for 383
flowmaster cat-back
Ram air to K&N cone
http://www.fbodyeurope.f2s.com/images/europebutt.jpg
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Old Feb 22, 2001 | 01:17 AM
  #7  
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From: Ramstein AB, Germany
-Double entry-

[This message has been edited by gregz28 (edited February 22, 2001).]
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Old Feb 22, 2001 | 07:49 AM
  #8  
Zepher's Avatar
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From: Norfolk, VA. USA
Car: 86 Trans Am, 88 Formula
Engine: 95LT4, 305TPI
Transmission: T56, T5
Took me about 45 minutes to do mine. It was the first time I ever did it. I did mine by going under the passenger side hush panel.
One of the previous owners cut the plastic housing cover in half, which made it easy to gain access to the heater core.

------------------
Zepher
'86 Pontiac Trans Am WS6, LG4 305, 5 Speed, CF DF Clutch,
Edelbrock 1406 Carb, Edelbrock Performer RPM 7101 Intake Manifold.
Edelbrock Open Element Air Cleaner: Flowmaster Exhaust, 160* Thermostat,
Grant GT Steering Wheel, MSD HEI Coil, Taylor 8mm Wires, Leather 96 Camaro SS Seats,
Alpine CD+Changer,Alpine V12 Amps, Premier TS-1040C Subs, Polk Audio highs/mids.
Best ET: 14.94@91.67
High Speed Run: 157mph
WS6 Trans Am
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Old Feb 22, 2001 | 08:01 AM
  #9  
87kevroc's Avatar
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Posts: 293
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From: United States of America
Car: 1987 Chevrolet Camaro Z28 IROC-Z
Engine: L98
Transmission: TeamTripp Performance
Here's a good article on the subject.

http://www.sethirdgen.org/heater.htm
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Old Feb 22, 2001 | 08:25 AM
  #10  
Ray87Z's Avatar
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From: Atlanta, GA, US of A
Car: 94 Z28
Engine: LT1 w/ headers, catback, CAI, tune
Transmission: 4L60E
Axle/Gears: 3.23s
I just changed mine out last weekend as a matter of fact. I heard horror stories about it. Spfff. Took around 30 minutes to get it out, 20ish to put it back in.

I just took all the bolts out except that top one and ripped the freaking cover off. Broke right at the bolt. There was not way I was going to get that sucker w/o a decent bit more work. It went back on darn near perfect too though.

LOL, kinda a jury riggin' way to do it I guess. Not exactly the recommended removal proccess...

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Ray87Z
-Vortec headed 350.
86 IROC w/ a cammed 305 TPI.
Formerly Ray86IROC.
www.inter-scape.com/Ray
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Old Feb 23, 2001 | 07:59 PM
  #11  
turbo497's Avatar
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From: Margate City
8 hours sounds right unless your going to nix the back bolt. my eight hours included the time to remove 11 years of filth from the vents and all the plastic surfaces inside the dash

Plan on removing everything center console, radio, upper dash pad speaker, drop steering column remove cluster

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3.8 turbo 20th anniversary transam #497 first owed by Clifford Williams, Bass player from rock band AC/DC
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Old Feb 26, 2001 | 11:46 AM
  #12  
FAST RS's Avatar
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From: Moorpark
Car: 1991 CAMARO 1968 FIREBIRD
Engine: CAMARO 3.1L FIREBIRD 455
Transmission: CAMARO 700R4 FIREBIRD TH-400
I changed mine this weekend on my 91 RS It took me 11 Hours to do hada rip the whole dash out center console guages everything it was hell and to make matters worse pepboys sold me the wrong part. Go to the v-6 Board i have 3 posts on what happed and somewer ein ne of them is a complest brakedown on how to do it. if you need help jsut email me Luniz2003@aol.com
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Old Feb 28, 2001 | 04:16 PM
  #13  
scottmoyer's Avatar
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From: Florida
Car: 87 IROC-Z, 82 Pace Car
If you know any Worldwide Camaro Club members, ask them if you can borrow the December/January issue. It goes into great detail on removing and replacing the heater core.

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87 IROC 350 TPI with less than 10k original miles
www.users.uswest.net/~smoyer/iroc.htm
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Old Mar 1, 2001 | 03:12 PM
  #14  
Mike-88CamaroTBI's Avatar
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From: Charlotte,NC USA
I replaced mine two weekends ago.
I started Sunday at 13:49. Pulled the car into the garage, gathered tools, gathered drain pans. loosened clamps on heater core spigots on engine side of firewall. Removed hush panel. Removed dash pad. Removed heater core cover. Removed heater-core/heater-core-bracket assembly. Spent an hour cleaning out the completely deteriorated foam glued to the steel baffles and cleaning up all the ductwork i could get to.Took heater-core out of it's bracket assembly. Put heater-core-assembly back into heater box. tested that baffles moved correctly. put all new hoses on ... lower/upper radiator hoses, all heater hoses. Filled with water and AF and fired it up. As soon as i got the coolant level filled up it heated up very well. it bypasses on MAX AC likes it is uspposed to. i have one leak at the water pump to fix yet, but it heats great and I was done with all this stuff and all the tools were put away by 17:39.

When i bought the car a year ago it had no heat. The heater core was bypassed in a most bad way.

i would do it again in a New York minute. Second time through the job i could do it in under two hours including all the hoses.

Heater core at NAPA ... $18.99 made in USA
Heater hose at NAPA ... $9.73 3ft 1 size 6ft another size

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1988 Camaro Sport Coupe305TBI-4spdAOD-2.73open in "bought stock" condition. That'll change if it stays around here much longer
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Old Mar 1, 2001 | 06:51 PM
  #15  
PopaPork's Avatar
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From: Trenton NJ,Rochester Ny
DONT DO IT. TOOK ME 6 HOURS TO GET IT HALF WAY THERE.....FINALLY SAID SCREWED IT. HAD IT DONE. MY BUDDY AND ME JUST DID HIS. GRAND TOTAL....11. 5 HOURS! I REPEAT DONT DO IT!!!!!!!

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89 Rs Camaro 305 TBI
Air Intake
K&N air filter
80 Series FlowMaster Muffler 2.5 inch Cat Back
BFG 235/60r15 (soon to be 25th Anniversary rims with 235/50r16)
Apperance: Black gray pinstripe. Black interior with Gray center piece in seat. Blue Gauge lights and 2 Blue neons under dash Board.
90 Iroc Checkerd Tail lights
Iroc Foglights
System: Pioneer 5200 Head unit Polk 3 ways up front and in the back. Kenwood 300 watt amp pumpin a 8inch JBL GT
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Old Mar 9, 2001 | 12:40 AM
  #16  
bigrobb's Avatar
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From: Missouri, USA
It took me about 5 minutes to bypass that b|tch after I saw all tha antifreeze in my floorboard.
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