C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Heater core.

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Old Oct 2, 2002 | 11:37 PM
  #1  
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Default Heater core.

How many hours to R&R one of these things in a 85? :mad


[Modified by corvette0096, 7:37 PM 10/2/2002]
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Old Oct 3, 2002 | 12:33 AM
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Default Re: Heater core. (corvette0096)

many many many hours, they designed the entire car around the HC
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Old Oct 3, 2002 | 01:49 AM
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Default Re: Heater core. (corvette0096)

way too many
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Old Oct 3, 2002 | 10:51 AM
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Default Re: Heater core. (corvette0096)

It is measured in days........not hours

Bob
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Old Oct 3, 2002 | 10:57 AM
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Default Re: Heater core. (corvette0096)

Mine was just replaced. I also have an 85. Someone out here posted an article, the upshot of which was "Don't try this at home". I didn't. I took it in and had it done (they also replaced a faulty heater shutoff valve). If you take the same path as me, prepare for a major blow to the wallet. :eek: :eek:
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Old Oct 3, 2002 | 12:36 PM
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Default Re: Heater core. (vader86)

Been there done that on my 86. One day out and one day in. Not a job for a novice, it's a real PITA :cheers:
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Old Oct 3, 2002 | 02:19 PM
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Default Re: Heater core. (corvette0096)

took me about 8 hours. I found that putting the new core into its bracket was a big pain, but otherwise it was straight forward.
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Old Oct 3, 2002 | 03:33 PM
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Default Re: Heater core. (corvette0096)

I have a 90 and I replaced the heater core myself in 22 hours stretched out over five days,
Usually my husband does all the mechanical work on our cars but he did not want to get tied down with this because he knew it was a big job, so I did it myself with absolutely NO mechanical experience and less than an hours help from him.
I am glad I did it myself because I am not sure someone else would have taken the time to put it back together correct.
It takes LOTS OF PATIENCE and when it starts to get overwhelming WALK AWAY and come back in an hour or the next day.
The only problem I had was purging the air out of the system, that took a couple of hours and a new thermostat gasket.
Good Luck, Laura :seeya
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Old Oct 3, 2002 | 03:36 PM
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Default Re: Heater core. (corvette0096)

The book says 4 1/2 hours...if you can get someone to commet to that ...I say let them do it. If not ...Its a nice winter project.
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Old Oct 5, 2002 | 10:25 AM
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Default Re: Heater core. (JonM)

So far so good. I worked on it a couple hours last night and I am almost there. I have to stop by Sears after work and get a 1/4 flex knuckel. One bolt on top that I can't get straight on. So far at this point I am into it about 2.5 hours and I feel there is no way to do it in the 4.5 hours. :nonod: I would say 6 tops. Maybe 5 with a lot of practice. :yesnod:
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Old Oct 5, 2002 | 01:09 PM
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Default Re: Heater core. (JonM)

The book says 4 1/2 hours...if you can get someone to commet to that ...I say let them do it. If not ...Its a nice winter project.
When I had the 89 dash still in my car it took me 5 hours start to finish
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Old Oct 5, 2002 | 01:26 PM
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Default Re: Heater core. (-=Jeff=-)

http://temp.corvetteforum.net/c4/scoob//c4heater01.jpg http://temp.corvetteforum.net/c4/scoob//c4heater02.jpg http://temp.corvetteforum.net/c4/scoob//c4heater03.jpg http://temp.corvetteforum.net/c4/scoob//c4heater04.jpg
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Old Oct 5, 2002 | 10:51 PM
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Default Re: Heater core. (Scoob)

http://temp.corvetteforum.net/c4/scoob//c4heater01.jpg http://temp.corvetteforum.net/c4/scoob//c4heater02.jpg</A> http://temp.corvetteforum.net/c4/scoob//c4heater03.jpg <A HREF="http://temp.corvetteforum.net/c4/scoob//c4heater04.jpg" TARGET="_blank">http://temp.corvetteforum.net/c4/scoob//c4heater04.jpg
I use that to go by, But I never took down the driver side hush panels off. There is really no need..
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Old Oct 5, 2002 | 11:11 PM
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Default Re: Heater core. (corvette0096)

I did mine in an unheated garage in the winter. :cry :sad: :mad :(
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Old Oct 5, 2002 | 11:19 PM
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Default Re: Heater core. (cohocarl)

Heat core repalcement= :mad
I usually do my own mechanic work, but in this case I say let the dealer do it. PITA!!!!!
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Old Oct 5, 2002 | 11:23 PM
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Default Re: Heater core. (LT5FIRE)

I am not sure why everyone says that. Its really not that hard of a job if you have the right tools. The hardest part that I am having now is finding out what one to go with now.
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Old Oct 6, 2002 | 12:04 PM
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Default Re: Heater core. (corvette0096)

We just replaced ours in our 91. Shop time according to the Chev dealership is 8.1 hrs. It took us 3 days just make sure you mark which wires go back together with each other, we had to take the whole front interior of the dash apart to get at all the pieces, seats out, center consol out. It was alot of work and then to get it all back in again was not alot of fun take alot of patience. Have fun.
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Old Oct 13, 2002 | 07:24 PM
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Default Re: Heater core. (corvette0096)

Have you finish changing the core yet? Can you tell me what need to take off from the top to be able to get to the housing bolts :mad . I took all the bolts off from the bottom already but the housing would budge. :cry . How do I take the bottom duct out? Do I need to?
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Old Oct 14, 2002 | 01:41 AM
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Default Re: Heater core. (VQT88Vette)

http://temp.corvetteforum.net/c4/scoob//c4heater01.jpg http://temp.corvetteforum.net/c4/scoob//c4heater02.jpg http://temp.corvetteforum.net/c4/scoob//c4heater03.jpg http://temp.corvetteforum.net/c4/scoob//c4heater04.jpg


That will help you out alot.. :cheers:
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Old Oct 14, 2002 | 06:47 AM
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Default Re: Heater core. (corvette0096)

Geez, and I thought swapping an engine was a PITA!!!

If my heater core every goes out, I think I'll just keep a couple of candles handy.
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