Heater box mounts for '94 - Defender Source
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  #1  
Old February 24th, 2012, 06:42 PM
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Andrew Dance
1994 D-90 ST
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Heater box mounts for '94

Could somone with a '94 have a look at the heater box and tell me how it's mounted to the bulkhead. I can see the 2 x 8mm bolts at the top, but it looks like it should also be bolted at the bottom? My new bulkhead doesn't have holes where I think it should, so wanted to check before I start drilling!

Thanks
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  #2  
Old February 25th, 2012, 06:05 PM
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Ethan
'73 SIII/ D90 Hybrid
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I believe there should be two small bolts on the bottom too, though I can't remember what size. They can't really be seen without a mirror if you have an A/C setup in your truck.
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Old February 27th, 2012, 09:08 AM
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Andrew Dance
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Thanks. I figured there'd be something holding it on at the bottom. Can you tell if there is any kind of gasket material where it contacts the bulkhead or is it pain-on-paint?
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  #4  
Old February 27th, 2012, 07:45 PM
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Ethan
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I don't think there is anything special going on there. Plug and play.
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  #5  
Old March 3rd, 2012, 09:51 AM
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Joe Still
95 D90 NAS 3.9l ST AA Yellow #2719
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Foam seal between bulkhead and box. Mine is apart, need a pic?
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  #6  
Old March 3rd, 2012, 10:28 AM
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Andrew Dance
1994 D-90 ST
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I think I got it now, thanks though. I have the foam seal at the top where it goes through the bulkhead, it was at the bottom where it rests on the bulkhead that I wasn't clear on. I ended up drilling 2 x 6mm holes in the bulkhead and made a thin rubber gasket to stop any paint-on-paint rubbing causing problems later.

I was tempted to enlarge the hole in the bulkhead as discussed elsewhere on the forum but decided that's probably not the real source of the restriction. The knee vents in the plenum chamber are much smaller and will probably determine the amount of air entering the cabin.
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Old March 3rd, 2012, 11:28 AM
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Joe Still
95 D90 NAS 3.9l ST AA Yellow #2719
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Sound reasoning.
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