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Unread 10-23-2009, 07:50 AM   #1
poppatello
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Yj Heater Box Swap...

I posted a thread looking for new Cj heater box parts and someone posted on using a Yj box. I asked and looked but couldn't find a write up on a Yj heater swap. Has anyone done this and is there a write up?

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Unread 10-23-2009, 08:04 AM   #2
certifiablejeep
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I had posted a while ago about a mutt setup of some YJ parts inside the CJ case... you need the CJ case back plate to fit up nicely in the CJ and if you did a YJ tub swap, then the YJ back plate would fit nicely. they are essentially the same.

the issue I had was that the bolts snapped off when removing the back plates.

Bottom shows the 2 different assemblies
certifiablejeep.com - Project "Free Jeep" a.k.a Project "FJ" - part #31

Here is the rest of it...
certifiablejeep.com - Project "Free Jeep" a.k.a Project "FJ" - part #34

Hope that helps a bit and gives you some ideas.

cb
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Unread 10-23-2009, 08:05 AM   #3
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PS, I do have a YJ setup that has most of the parts that we took out of a YJ tub swap... if you could use it, PM me or email me at cbrown@certifiablejeep.com and we can talk.

Craig
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Unread 10-23-2009, 08:05 AM   #4
Mike Romain
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I have modified a couple YJ 258 heater boxes with the big GM blower motor and these ones looked the same as the CJ one so no real modifications were needed. oh, the switches were different, the YJ blower motor switch only has a low on it, no off, the off is on the vent control. Don't know that that matters if you use CJ controls.

That said I highly recommend the GM blower upgrade, it puts out more at low than the CJ one did on high.
Jeep Heater Blower Motor Upgrade
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Unread 10-23-2009, 08:10 AM   #5
certifiablejeep
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Absolutely on the upgrade as well, however, the cables attaching to the outer part of the heater box and the side near the passenger door is much different, you could probably get them to work, but I never tried to do that. I just used the backing plate as those were the same... I also used the YJ blower motor as well as the YJ deflector on the bottom.

cb
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