

| Subject: | Re: rear heater core in front, was: New thermostat funky? |
| From: | Mark Tuovinen |
| Date: | Wed, 5 Dec 2007 22:41:04 -0900 |
Last Winter I was about ready to move the radiator inside the passenger compartment. I did have it blocked off with cardboard. Thought about the curtain idea but figured the kids would complain if I did not share the warmth with them. They rode to school every day with a blanket over their laps. As I am also in the process of converting to a Carat interior I will be adding sound deadener and insulation to the side panels. Wish I could add it to the ceiling too, but don't want to mess with the headliner and sunroof mechanism. Anybody ever make a headliner for their van similar to those in newer vehicles, a hard one instead of fabric? Sure would make it easier to insulate the roof. Mark in AK Searching for warmth in all the wrong places ----- Original Message ----- From: Scott Daniel - Shazam <scottdaniel@TURBOVANS.COM> Date: Wednesday, December 5, 2007 3:18 pm Subject: Re: rear heater core in front, was: New thermostat funky? To: vanagon@GERRY.VANAGON.COM > Excellent ! > A recirculate interior cabin air system of course ! > I just want to add, you have your heater hose that feeds warm coolant > forward fully wrapped and insulated, right ? > And you're running the warmest thermostat you can get, right ? > I also remove rear heaters, or keep them out of the system at > least, so all > warm coolant goes forward. > And lastly, a curtain, like a heavy wool Pendleton Indian > Blanked, just > behind the front seats ( arched curtain rod to match the roof > curve ) means > mostly you are just trying to heat the front area only, and that helps > considerably. > > Now, if I can just figure out why this 98 subaru 2.2 engine in an > 82 diesel > Westy will not make the heater work 'at all' , I'll be a happy > vanagon-er ! > Scott > www.turbovans.com > > -----Original Message----- > From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On > Behalf Of > Mark Tuovinen > Sent: Wednesday, December 05, 2007 3:51 PM > To: vanagon@GERRY.VANAGON.COM > Subject: Re: rear heater core in front, was: New thermostat funky? > > Re: "Mark, > > > > You can't leave me in suspense like this! > > > > "In my case it took longer but that was because I modified the > heater box > and air intake system to improve the output for the front heater." > > > > What did you do, and did it work? I'm putting a new core and > fan this > weekend. > > > > Lee > > 89 syncro > > Since you asked, this is not a finished write up but it will > explain what I > have been up to. The ideas used to do this came both from my mind > and of > List member Neil Nicholson, whom thoughfully posted both to the > List and his > website his attempts do accomplish the same goal during the > conversion of > his van from air to water cooling. I undertook this project in an > attemptto improve the front heater efficiency and because I was > already going to > have my dash out to replace a leaking heater core, and a broken > passengerside wiper pivot. While I had the dash out I also added > sound deadening > material and insulation to the front of the van. This will have > littleaffect until I do the rest of the van but rather than > stripping the entire > interior at one time I will do a section at a time as time allows. > > If you are bored, have extra time, already have need to replace > your front > heater, and want to improve on your front heater output you can > join me in > my experiment to do so The primary problem with front heater > output in > Vanagons stems(IM not so HO) from the inability to shut off the > outside air > intake and switch to recirculated cabin air. To some this is not > an issue, > but for me driving to work in subzero temperatures it creates a > problem.With air that cold constantly being supplied to the heater > core it is > difficult to keep the interior of the van warm, making my white Syncro > resemble a freezer both inside and out. Curing this is a two step > problem,three if at first you have to admit the problem exists. > First you have to > devise a way to block the outside air intake, then you need to > provide a > passage for recirculating air back to the heater core. To block > off the air > intake you can either construct a flap for the opening behind the > grill(outside the van), or make one to install inside directly in > front of > where the air first enters the heater box. This requires removing the > heater box, but you will have to do so anyway when you make the > return air > passages, it is also easier to make a door for this spot as the > area is > flat, smooth, and reasonably square(or easily made to be square). The > outside opening behind the grill is easier to access but harder to > make a > door for that fits and will seal shut, and again, as you have to > pull the > heater out to make the return air passages, you might as well make > the door > for the inside location. I confess that at this time I have NOT > made a door > and for now have just blocked this off with sheet aluminum. I did > this as I > was in need of my vehicle for transportation and will be making a > door later > this winter, using my parts van for measurements, and istall it > next spring. > The door will need a control device for which I am currently > planning to use > a manual cable control assembly to be acquired from my FLAPS. > Step two of > this project is to make a new air intake system that utilizes > recirculatedcabin air. To do this I chose to sacrifice the vents > at each end of the > dash, the ones that previously supplied fresh air for the driver > and front > passenger. To do this I left their hoses to the heater box off > and made > tubular(semi) inserts that fit inside the heater box where each > hose went. > The inserts do two things, they route the incoming air toward the > fan and > hold the free floating flap that VW put into the passage in the open > position. I bench tested the unit for airflow after the mods were > done and > was pleased with the results. This is a work in progress and I > have found > that the interior windows steam up more now, they do clear up > after a while > but not during short drives. I hope to alleviate this once I have > made and > installed a working door for the outside air intake, rather than > the block > off plate that I am currently using. Other than that I am so far > pleasedwith the amount of heat that I am able to produce from the > front heater now. > I have also found a partial work around for the fogging in that if > I cover > the some of the upper dash vent openings I can direct more flow to > the areas > that need it most. > If any one has any input that they would like to share on this > please do so, > I welcome any and all ideas and suggestions. > Mark in AK -- Looking for more heat on those cold Winter days > > ----- Original Message ----- > From: Lee Peterson <iridewheelies@gmail.com> > Date: Wednesday, December 5, 2007 1:41 pm > Subject: Re: rear heater core in front, was: New thermostat funky? > To: Mark Tuovinen <mst@ak.net> > Cc: vanagon@gerry.vanagon.com >
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