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Old 07-11-2013, 09:07 PM
willg willg is offline
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Join Date: May 2013
Boat: 02 X-Star
Location: Northeast
Posts: 120
Heater Core Replacement DIY w/ Pictures

So, I thought my heater was bypassed because the PO winterized it. Hooked it up and went skiing. Heater core leaked and boat filled with hot water VERY quickly. So I decided to replace the core. Boat is a 2002 X-Star w/ HeaterCraft 200H heater.

TOOLS REQUIRED:
Phillips screw driver
Wire cutters (for zip ties)
Electric screwdriver (makes life much easier)

PARTS REQUIRED:
Heater core- $100 from Heatercraft, $34 from NAPA Auto Parts. Part number is 660-3100
http://www.napaonline.com/Catalog/Ca...100_0240680129
Some 1/4" or 1/8" adhesive backed foam. Around 2" wide, you need about 2 feet of it
OPTIONAL: 5/8" hose or clamps if yours are broken.

Note- I took the kick panel off, this could probably be done through the sub hole if you have it.

1) If you have it, remove the sub-woofer under the dash.

2) Disconnect the wires for the engine control module and the perfect pass. The connectors for the ECM are shown below. (I took the actual units off the kick panel, this was not necessary.) You push down on the piece near my thumb in the picture. On the other connector, lift up on the plastic loop to remove the connector.



Sorry for the lousy pics

3) Remove the two phillips screws on the lower left of the kick panel.



4) Cut the two zip ties securing PP wires at the top left of the kick panel

5) Remove the panel. To get it out, you have to lift it up and then slide the bottom out. Make sure the wires that come over the top left do not get caught. Cut the zip tie holding the heater hose onto the back of the vent, and slide the hose off.



6) Look up at the heater. On the right side, you will see two phillips mounting screws into the fiberglass. Remove these. It is not necessary to remove the left side mount

7) Remove the (4) screws holding the mount for the heater.



8) Remove the (4) screws holding the black left cover onto the heater



9) You can now see the core. Loosen the hose clamps on the water lines and pull the hoses off (I had to cut mine)

10) On the bottom of the heater, between the two hose connections, there are (2) more screws. Remove these.

11) Remove the metal plate that slides in over the hose connections (you have to lift it up and out). Its the tan/brown piece in this pic



12) Slide the heater core to the right, keeping it level



13) Prep your new core. I happened to have some of the exact foam that the old core had, but I’m sure it could be found at the auto parts place or home depot. Stick the foam around the edge of the core. I also put some little strips around the hose connections.





14) Slide the new core into the hole. It is important to keep the core level when you slide it in, otherwise it will not insert all the way.



15) The cut outs on my metal plate were a little too narrow for the new core, so I hit it with a grinder to open it up. this is the piece



16) Slide the metal bracket into the core. It fits with the two screw holes down, and the vertical wall to the right.



17) Screw the metal bracket in from below

18) Use the (4) screws to install the black cover onto the side of the core



19) Use the (4) screws to install the bracket to the core. Don’t tighten the screws all the
way, leave some play in the bracket.



20) Use the (2) screws to install the bracket to the fiberglass, then tighten the ones that attach it to the heater.



21) Attach the heater water lines

22) Indulge your MCOCD and vacuum behind the kick panel, even though no one will ever see it…..

23) Reinstall the drivers kick panel. Before doing this, I stuffed the wires that go over the left side up against the heater. This kept them out of the way. Make sure you rout all your PP wires over the top of the panel. Again, the panel top needs to go in first then slide the bottom in. I had to wack it with my hand to get it to go all the way in. Push the panel down to seat it. It will need to go down further than you think.






24) Reinstall the two screws at the bottom left of the kick panel. If its all the way seated, they should go in easily to their old holes.

25) Polish & reinstall your sub woofer (don’t forget to connect the wires). It helps to have an extra set of hands hold it from behind.

26) Connect the ECM and perfect pass.

27) Zip tie the PP wires to the two plastic loops at the top left of the panel.

28) Wait for winter to test.

Last edited by willg; 07-11-2013 at 09:21 PM.
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  #2  
Old 07-11-2013, 11:24 PM
uplander uplander is offline
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Join Date: Jan 2013
Boat: MC 2002 X30
Location: midwest
Posts: 563
does the heat only come out of the one vent, thanks for post with pictures. looking to install one but not sure where to put the unit
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Old 07-12-2013, 01:36 AM
willg willg is offline
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Join Date: May 2013
Boat: 02 X-Star
Location: Northeast
Posts: 120
The heat comes out of there and a vent on the passenger side. The tube runs around the bow
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Old 07-12-2013, 08:22 AM
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76S&S 76S&S is offline
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Join Date: Jun 2007
Boat: 2002 X Star
Location: At the lake or on the way to the lake!
Posts: 1,787
Nice work and thanks for the NAPA tip.
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Old 07-12-2013, 08:41 AM
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jakethebt jakethebt is offline
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Join Date: Jul 2005
Boat: '96 Prostar 205 LT-1
Location: Dayton, OH
Posts: 578
Nice thread. I replaced the heater core on my 1996 205 last fall. The steps were the same, except I had the 100 series heater. The only difference is the 100 series has the 12v blower (looks like a bilge blower) in the box with the core. I had to remove the entire 100 series box which was only 4 screws. Then I had to drill some rivets and replace the core. I could not find the 100 series core replacement anywhere so I had a local radiator shop repair it. Made me feel good to support the shop, he is truly the "little man".
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