CJ/YJ Heater Mix - JeepForum.com

 
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post #1 of 6 Old 05-03-2010, 05:14 PM Thread Starter
nedmoore
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CJ/YJ Heater Mix

I am in the process of swapping of YJ tub into my CJ. I have the CJ heater core and was wondering if it would fit into the YJ heater cowl that is in my YJ tub?

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post #2 of 6 Old 05-03-2010, 05:27 PM
Lordwrench
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Yes, they are the same.If your not planning to already,do yourself a solid and go to the parts store,order up a siemens PM102 blower motor. About 25$ or less. Take a dremel with fiberglass cutoff wheel,or tool of your choice, and open that firewall hole up about 3/8" all the way around,spray it with some clear to protect the bare metal from the trim. Stuff the bigger motor in there with some gasket maker or cut a piece of material to custom seal the larger motor to the firewall. Best bang for your buck upgrade I ever seen,especially since you already have the heater out. I would replace the core too,mine was like 30$ from autobone. Again,since it was already apart, definitely worth the peace of mind. The best 50$ I ever spent on my jeep. There's plenty more information in the sticky or search function.
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post #3 of 6 Old 05-03-2010, 05:30 PM
Lordwrench
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In case you can use them.
Attached Thumbnails
firewall4.jpg   heater_box_diag.jpg   HeaterControlsOnBox.JPG  
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post #4 of 6 Old 05-03-2010, 05:40 PM Thread Starter
nedmoore
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Thanks Lordwrench, that was next question! Also, does the new motor come with a new fan blade or do you use the old one? Thanks for the response, you went above and beyond!
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post #5 of 6 Old 05-03-2010, 05:53 PM
Lordwrench
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You re-use the old fan.It bolts right on to the new one which should come with a new locking nut,no other mods needed. It took me like five minutes with a dremel, but there's lot's of write-ups about other methods to open the firewall, but it's invisible after install, so I kept it simple. The increase in heat/defrost flow is incredible and much appreciated up here in Seattle. I am going to add a dedicated ground to the fan as well,to make sure it's getting full flow,but it work's great as is.
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post #6 of 6 Old 05-03-2010, 05:55 PM Thread Starter
nedmoore
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Great, just ordered fan and new core.
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