Results 1 to 5 of 5

Thread: Heater core removal Daytona.

  1. #1
    Garrett booster
    Join Date
    Mar 2023
    Location
    Delhi, ON
    Posts
    64

    Heater core removal Daytona.

    I just flushed the heater core (disconnected by PO years ago) let it soak with CLR and flushed with water hose.

    I then noticed water dripping from the AC evap core drain on the firewall. So I'm assuming the heater core is pooched.


    Whats the fastest way to remove the heater core? Can it be done from underneath the dash or does it have to come out?


    Thanks for any guidance.
    Last edited by Tonatom2; 04-22-2023 at 06:20 PM.

  2. #2
    turbo addict
    Join Date
    Dec 2006
    Location
    MPLS, MN
    Posts
    3,591

    Re: Heater core removal Daytona.

    Easiest way is for dash to come out, then the HVAC box. I think the FSM talks about leaving dash in place and removing HVAC box, but that seemed like more work to me. Sort of like pulling the turbo without removing the cylinder head. Yes it can be done, but may end up being slower.
    Maybe you had the CLR soaking for too long (lol). Did you dilute it? IIRC, it is is not recommended for brass amongst other things.
    Do yourself a favor and pressure test the new one before you install it, as the replacement HC are not the greatest quality.
    Todd

  3. #3
    Garrett booster
    Join Date
    Mar 2023
    Location
    Delhi, ON
    Posts
    64

    Re: Heater core removal Daytona.

    Quote Originally Posted by 4 l-bodies View Post
    Easiest way is for dash to come out, then the HVAC box. I think the FSM talks about leaving dash in place and removing HVAC box, but that seemed like more work to me. Sort of like pulling the turbo without removing the cylinder head. Yes it can be done, but may end up being slower.
    Maybe you had the CLR soaking for too long (lol). Did you dilute it? IIRC, it is is not recommended for brass amongst other things.
    Do yourself a favor and pressure test the new one before you install it, as the replacement HC are not the greatest quality.
    Todd
    Thanks Todd. It was 100% but only about 30 min at a time. Can't see it eating thru that fast.

    I assume if have to pull the AC lines then. Was hoping to leave that all connected. So I'm sure the dash will have to come out then.

  4. #4
    Super Moderator Turbo Mopar Staff 135sohc's Avatar
    Join Date
    Aug 2008
    Location
    SoMd
    Posts
    6,183

    Re: Heater core removal Daytona.

    If you remove the dashboard there might be enough wiggle room at the expansion valve to hose connections to unbolt the heater box from the firewall and pull it back a couple inches to take the top off and swap the heater core. If the A/C is still hooked up and holding pressure that is a good thing and I would do anything too not disturb the system.
    1994 Shadow Sedan. 2.2 N/A, A568 400,000 miles. "the science experiment"
    1987 Shelby CSX #418. Long term rebuild and restore ?

  5. #5
    Garrett booster
    Join Date
    Mar 2023
    Location
    Delhi, ON
    Posts
    64

    Re: Heater core removal Daytona.

    Hope so thanks.

Similar Threads

  1. General -10 an heater core
    By lengel in forum Parts For Sale
    Replies: 5
    Last Post: 01-03-2014, 07:49 PM
  2. Heater core on 87 CSX
    By iTurbo in forum "I need help!"
    Replies: 10
    Last Post: 12-24-2012, 11:43 PM
  3. Heater core?
    By ShadowFromHell in forum Interior & Exterior Restoration
    Replies: 14
    Last Post: 10-08-2012, 05:19 PM
  4. Possible bad heater core?
    By CSX153 in forum "I need help!"
    Replies: 8
    Last Post: 02-03-2010, 11:08 PM
  5. Heater core help
    By Dave in forum "I need help!"
    Replies: 3
    Last Post: 03-29-2007, 05:39 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •