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> Best way to add heat to a Subaru conversion?
CptTripps
post Dec 16 2013, 08:30 PM
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I would like to add heat and defrost to my Subaru conversion, but I'm not sure the best way to do it. Now, I'm no expert on the ventalation system of these cars, but I was hoping to have something simple like 2 discrete motors. One for the vents on the dash, and another for the defrost.

The stock heat blowers are intact on the car, but I don't believe they're hooked up at all, since the PO had a SB350 installed. That motor is going bye-bye, and I'm not sure the best way to add something to replace it. I don't need fire shooting out of the vents like my Land Rover, just enough to get the windscreen clear and take the edge off of a cool night.

I see a few aftermarket blowers that I can put in-line with the heat tubes, but how should I GET the heat? Is thee a way to do it from the water in the radiator?
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bfrymire
post Dec 16 2013, 08:47 PM
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QUOTE(CptTripps @ Dec 16 2013, 07:30 PM) *

I would like to add heat and defrost to my Subaru conversion, but I'm not sure the best way to do it. Now, I'm no expert on the ventalation system of these cars, but I was hoping to have something simple like 2 discrete motors. One for the vents on the dash, and another for the defrost.

The stock heat blowers are intact on the car, but I don't believe they're hooked up at all, since the PO had a SB350 installed. That motor is going bye-bye, and I'm not sure the best way to add something to replace it. I don't need fire shooting out of the vents like my Land Rover, just enough to get the windscreen clear and take the edge off of a cool night.

I see a few aftermarket blowers that I can put in-line with the heat tubes, but how should I GET the heat? Is thee a way to do it from the water in the radiator?




How about a hot rod heater? Speedway motors has one...

--brett
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bulitt
post Dec 16 2013, 08:59 PM
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Do a search under Marks914. He put an oil cooler in the fan blower box and ran coolant through it via a valve.
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McMark
post Dec 16 2013, 09:30 PM
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I'd look at a motorcycle oil cooler, mounted in front of the tubes in the engine bay and plumbed in the water system. Fabricate a shroud to connect the cooler to the round pipe and put a fan on it. One on each side probably. Wouldn't need a valve in them, IMHO. Just control the fans. And use the stock diverter valves to control direction.
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Mike Bellis
post Dec 16 2013, 09:34 PM
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I did an oil cooler in the fresh air box. I did a how to here somewhere. I use the stock fav and control the water valve with the dash controls.
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Tilly74
post Dec 16 2013, 10:06 PM
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For my subie swap I plan to modify my fresh air box and install an a/c evaporator and ...haven't worked out the details yet, but I think my next step is a long day of digging through small vehicle dashboards at a pick-n-pull. The ultimate goal would be functioning heat and a/c through the fresh air box controls. For heat I want to use something like this and direct the heated air into the fresh air box where the factory heat came in from heat exchangers.
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BIGKAT_83
post Dec 16 2013, 10:22 PM
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Like mine here. Both heat and AC.
Still have to finsh this before next summer
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Mike Bellis
post Dec 16 2013, 10:23 PM
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Here's my heater thread...

http://www.914world.com/bbs2/index.php?sho...led+guys+bellis

Here's marks914...

http://www.914world.com/bbs2/index.php?sho...c=70317&hl=
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gryphon68
post Dec 17 2013, 08:03 AM
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Considering this myself.

This is where I'm leaning. Please feel free to shoot holes in my theory.

Using a expansion tank with radiator cap as the highest point in my coolant system. With the addition of a couple more inlets and outlets or some fitting tee's you can have a small electric pump circulate water through the heater core branch and return it to the tank.

Heater core and heater core branch lines need to be kept lower than the top of this tank.

Ideally this would probably be mounted on the rear wall of the front trunk.

You could either run one leg of the engine-to-radiator coolant lines through the tank, or what would probably be cleaner would be a large tee in one of the engine-to-radiator coolant lines running to the expansion tank.

(IMG:http://www.914world.com/bbs2/uploads_offsite/www.moroso.com-16462-1387289019.1.jpg)
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DBCooper
post Dec 17 2013, 08:22 AM
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Wow, Bob, EXTREMELY sanitary! And you actually carry that broom around? Wow, that's above and beyond. (IMG:style_emoticons/default/laugh.gif) (IMG:style_emoticons/default/poke.gif)

(IMG:http://www.914world.com/bbs2/uploads/post-194-1387254058.jpg)

Seriously, that's excellent, are there parts details in one of your threads?
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mepstein
post Dec 17 2013, 08:57 AM
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QUOTE(BIGKAT_83 @ Dec 16 2013, 11:22 PM) *

Like mine here. Both heat and AC.
Still have to finsh this before next summer
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Exactly what I want to do when I build my subie conversion. factory appearance. Looks awesome!
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nsyr
post Dec 17 2013, 12:41 PM
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QUOTE(BIGKAT_83 @ Dec 16 2013, 11:22 PM) *

Like mine here. Both heat and AC.
Still have to finsh this before next summer
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What are you using in there??????
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CptTripps
post Dec 17 2013, 01:35 PM
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Yeah, I'm waiting for that explanation too! That looks like a hot setup.
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Chris H.
post Dec 17 2013, 01:48 PM
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Is this what you used Bob?


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mikesmith
post Dec 17 2013, 01:54 PM
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The unit you linked is one of the Vintage Air under-dash units; very different from the one in Bob's pic. The VA guys believe very strongly in recirculate-only setups, none of their units are set up to pull fresh air.

I think we all want to know what he's done there. 8)
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Chris H.
post Dec 17 2013, 02:05 PM
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Ah OK. I was trolling all his old threads...we'll just wait then!
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gryphon68
post Dec 17 2013, 02:14 PM
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QUOTE(mikesmith @ Dec 17 2013, 02:54 PM) *

The unit you linked is one of the Vintage Air under-dash units; very different from the one in Bob's pic. The VA guys believe very strongly in recirculate-only setups, none of their units are set up to pull fresh air.

I think we all want to know what he's done there. 8)


That is the picture/link Bob originally posted here.
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CptTripps
post Dec 17 2013, 02:17 PM
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I'm looking at this, thinking it may work well.

Vintage Air Gen ii



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badmiata
post Dec 17 2013, 02:34 PM
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I have seen the under dash ones. Renagade, Pelican and what not sell them but its a whole kit compressor and all. I would be happy with something like that if I could use the compressor from the subaru enigine.
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ThePaintedMan
post Dec 17 2013, 02:40 PM
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Bob's setup is really cool. Would love to find out what it is exactly, but also how he figured out what would work there.


On another note, someone with CAD experience and a 3D printer could probably design something similar, once the proper heater core and fan were identified. (IMG:style_emoticons/default/idea.gif)
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