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914World.com _ 914World Garage _ Heater for Water cooled 914s
Posted by: marks914 Apr 6 2007, 12:41 PM
Here are the pics of the prototype. If there is any interest, this may be one of my next produts.
It hets pretty cold here in Michigan, its 26F right now and I do need a heater. I had a heater under my dash and I got tired of looking at it so I came up with this.
It uses the stuck heat/fan controls on the dash. The fan works in the usual way and the red heat director lever actuates the water control valve to control the temp of the heat exchanger.
Mark
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Posted by: marks914 Apr 6 2007, 12:44 PM
Here is one of the heater control valve.
Does anyone know what these wires are for? The red is + and the 2 browns do not give me anything, + or -
Mark
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Posted by: marks914 Apr 6 2007, 12:45 PM
Here is the pass side
As you can see, the original heat vents are plugged.
Mark
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Posted by: Andyrew Apr 6 2007, 01:10 PM
Thats what I was going to do!! Cool!
cept mine was to be an oil cooler...
Posted by: andys Apr 6 2007, 02:35 PM
Mark,
Are the heater hoses routed through the original heater tubes back to the engine compartment?
Nice job.
Andys
Posted by: So.Cal.914 Apr 6 2007, 02:49 PM
Very Cool, nice job.
Posted by: propricer Apr 6 2007, 03:20 PM
NICE job Mark ... I'm envious !!!
Curious - what prompted you to grab water from the engine rather than the shorter run to the front radiator ???
Any chance you would allow me to include pix of the setup in my book '914-V8 Conversion Reference Manual' ??? With full credit, of course.
Again, great job ... hope you are willing to share with the V8 newbies.
Best ... ed.ducey@gmail.com
Posted by: marks914 Apr 6 2007, 07:11 PM
Andys-
Yes, my heater lines run inside the longs back to the engine
Propricer-
Feel free to use my stuf in your book. Check out my website listed in my signature for my gaues and stuff.
I do not tap off the lines to the radiator for a couple of reasons.
I like to keep water going through the engine when the t stat is closed. You may have noticed the return hole on the block where the water pump was is usually blocked by the new coolant line fittings. Keeping coolant flowing through the engine always helps to prevent cavitation and aids in expelling any air pockets.
My water pump has a provision for a heater suction side and I come off of the engine in the stock location on the manifold. I also have a small return line from the high side to the low side to keep some coolant flowing even when the t stat and heater control valve are closed.
I was thinking of making a kit for this conversion, I will test it next week when I get back home.
Mark
Posted by: skline Apr 7 2007, 02:06 AM
That is sweet, I will be needing one of those in mine, being old, I get cold easily and the defrost would be a plus too.
Posted by: euro911 Apr 7 2007, 02:47 AM
Here is one of the heater control valve.
Does anyone know what these wires are for? The red is + and the 2 browns do not give me anything, + or -
Mark
Nice job on the heater
... What did you use for the heat exchanger?
Posted by: quadracerx Apr 7 2007, 03:40 AM
That is COOL.....When will it be available....I WANT ONE!
Let me know...
Steve
Here is one of the heater control valve.
Does anyone know what these wires are for? The red is + and the 2 browns do not give me anything, + or -
Mark
Nice job on the heater
... What did you use for the heat exchanger?Posted by: marks914 Apr 10 2007, 10:30 AM
thanks for the input everyone.
If i were to offer these, would you want just the box with the core installed, or everything? (box, water control valve, j-pipe, etc?
Would you guys want a complete assembly or ship tours to me for modifications?
Thanks
Mark
I should have the Porschev valve covers in about 2 weeks
Posted by: drive-ability Apr 10 2007, 10:50 AM
Here are the pics of the prototype. If there is any interest, this may be one of my next produts.
It hets pretty cold here in Michigan, its 26F right now and I do need a heater. I had a heater under my dash and I got tired of looking at it so I came up with this.
It uses the stuck heat/fan controls on the dash. The fan works in the usual way and the red heat director lever actuates the water control valve to control the temp of the heat exchanger.
Mark
Mark,
That's some nice work!
Posted by: Porcharu Apr 10 2007, 01:33 PM
thanks for the input everyone.
If i were to offer these, would you want just the box with the core installed, or everything? (box, water control valve, j-pipe, etc?
Would you guys want a complete assembly or ship tours to me for modifications?
Thanks
Mark
I should have the Porschev valve covers in about 2 weeks
I would like to have everything (heater related) in the picture - minus the hoses. Nice work, keeps us from reinventing the wheel.
Posted by: soloracer Apr 12 2007, 01:11 AM
I would like one of everything as well. Let us know when you put something together and what the cost is. Looks really good and solves an important problem for some of us.
Posted by: PinetreePorsche Apr 12 2007, 09:10 AM
Yeah--where do you get the actual exchanger? Also--to do sourcing on the mystery wire, you COULD (your option--but exciting!) purposely short hot to ground just to see which fuse blows (maybe after first checking the red for current). Or, for the more prudent willing to spend more time on it, put a load into the line and check which fuse circuit shows current flow (what a drag).
Now about the origins of the exch. unit--new or recycled--if its not top secret?
Posted by: Eric_Shea Apr 12 2007, 09:15 AM
Very clean job. 
Posted by: bd1308 Apr 12 2007, 09:17 AM
I was wondering if oil could also be used for this as well, via an adaptor plate on the oil filter console?
oil in something like an oil cooler for aircooled engines that could be shut off or bypassed in the summer
Posted by: marks914 Apr 12 2007, 09:45 AM
The heat exchanger is new. It will use any liquid to heat it, so oil coild be used as well as coolant.
I have not had a chance to test it since my ignition cylinder broke and I still have the tank out to put my swaybar on. I should have it running and tested this weekend. The theory is sound, so it should work.
I think the Kit would consist of the heat exchanger in the air box, and the coolant control valve with optional j-pipe.
I would leave threaded fittings on the heat so that the customer could go to the hardware store and get the proper hose barbs for their particular size coolant lines.
I know Renegade's steup is $395, I plan on being less than half.
Mark
Posted by: bondo Apr 12 2007, 06:00 PM
Add an AC evaporator, and I'll be interested too. 
Posted by: fiid Apr 12 2007, 08:29 PM
I'm interested
Posted by: Bigbohr Apr 12 2007, 10:02 PM
My water pump has a provision for a heater suction side and I come off of the engine in the stock location on the manifold. I also have a small return line from the high side to the low side to keep some coolant flowing even when the t stat and heater control valve are closed.
What waterpump are you using? If it's a Renegade pump do they always come with heater suction inlet?
Thanks
Posted by: marks914 Apr 14 2007, 06:29 AM
My water pump has a provision for a heater suction side and I come off of the engine in the stock location on the manifold. I also have a small return line from the high side to the low side to keep some coolant flowing even when the t stat and heater control valve are closed.
What waterpump are you using? If it's a Renegade pump do they always come with heater suction inlet?
Thanks
I am using a Desert Hybrids pump. it does have the water return on the pump. I do not know if Renegade has this provision. You can always come off of the intake manifold stock water outlet, to the heater core and then plumb it back to the suction side hose somewhere.
Mark
Posted by: marks914 Apr 17 2007, 10:29 AM
Finally got the sway bar and the tank in, fired it up to test the heater. Seems to work Ok. The air is not hot by any means, but pretty warm. Its been and is going to be in the 30s-40s the rest of the week so I will drive the car as much as I can to see how the heater works out. Should be fine. Replacing my fresh air hoses made a world of difference in the force of the air coming through the vents. I will get some numbers up by the weekend.
Mark
Posted by: MecGen Apr 17 2007, 06:32 PM
Hey Great Work !
I am pretty sure once you drive it you will see a big difference in the heat output. The coolant has a long way to travel, extra RPM might be needed. Whenever I do my conversion, I had thought of a system similar to yours would be perfect.
Keep us informed
Later
Posted by: soloracer Jul 23 2007, 11:20 PM
Any updates on this set up?
Posted by: 914nerd Jul 24 2007, 04:46 PM
Thats what I was going to do!! Cool!
cept mine was to be an oil cooler...
I'm going to be doing something like this very soon
Oil cooler up front
Lever actuation to change where the air is going. Vent it out when it is warm outside and vent the heat into the cabin when it is cold (also, possibly add a fan within the ducting to get a little more flow when needed)
We'll see how it turns out
Posted by: pjhaun Jul 25 2007, 09:01 AM
Here are the pics of the prototype. If there is any interest, this may be one of my next produts.
It hets pretty cold here in Michigan, its 26F right now and I do need a heater. I had a heater under my dash and I got tired of looking at it so I came up with this.
It uses the stuck heat/fan controls on the dash. The fan works in the usual way and the red heat director lever actuates the water control valve to control the temp of the heat exchanger.
Mark
Mark,
What does the inside look like? How did you put the heater core in that little box?
Thank You!!!!
Phillip J. Haun
Oak Harbor, WA.
Posted by: marks914 Jul 25 2007, 09:10 AM
The heaters are coming, probably this fall, mid September. I have been slammed at work, plus the quad gauges/tachs and I am going on vacation in a couple of weeks then I have my brother's wedding next month, then I can get going on them.
The prototype works well, I have found a denser core that looks like it will work. I am also trying to keep the price below $200 which looks like it may happen, maybe $225 at the most, including everything except the hoses/clamps.
Phillip,
I don't have a pic of the inside, its just a heater core in there with a closeout on the bottom and some of the upper rain flap trimmed from the bottom. The box is bigger than you think.
Mark
Posted by: mike_the_man Oct 24 2007, 12:51 PM
Any updates on this? I'm planning to start collecting all the V8 parts I'll need, and something like this is definitely on my list! It looks awesome.
Posted by: joefri187 Nov 14 2007, 04:05 PM
Yes, Updates please!!!! Winter is here!!!
Posted by: budman5201 Nov 17 2007, 12:21 AM
Has anyone ever thought of using a Water to Air intercooler that uses the stock heater core lines off the engine and then uses the stock 914 blower motors and heater flappers to keep the 914 stock heater intact? Sounds to me like that is the easiest and most stock way of doing 914 heat and in the summer you can keep them running through the intercoolers that are used the opposite way and have a switch to kick the blower motors on too!
Yes, Updates please!!!! Winter is here!!!
Posted by: pdlightning Nov 5 2011, 07:19 PM
Add an AC evaporator, and I'll be interested too.
A/C and heater and I will buy up also.
Posted by: partwerks Nov 5 2011, 08:03 PM
Seems like in the past I had seen a 914 member that had made one of these setups?
Does the blower suck in cold air that blows over the oil cooler and vented into the cab?
Not sure if it is doable, but since I had the Renegade under dash unit, I was wondering if I could run some duct work from the under dash unit up to the defroster vents?
Posted by: pdlightning Nov 5 2011, 10:03 PM
Seems like in the past I had seen a 914 member that had made one of these setups?
Does the blower suck in cold air that blows over the oil cooler and vented into the cab?
Not sure if it is doable, but since I had the Renegade under dash unit, I was wondering if I could run some duct work from the under dash unit up to the defroster vents?
I was told by Steve at Renegade on Thursday that you could .
Posted by: partwerks Nov 5 2011, 10:52 PM
I'll have to crawl around under there and take a closer look, since it now sounds like it is a possibility.
Posted by: type47fan Nov 6 2011, 04:32 PM
>four year old thread and Mark S. hasn't even been logged on this year since late July. Anybody heard from him?
Posted by: partwerks Nov 6 2011, 05:00 PM
Guess mine is already set up to divert the air from the under dash to the vents with switching the lever where it forks into the "Y"
Posted by: speed metal army Nov 6 2011, 06:16 PM
Couldnt a guy make some Heat exchangers for the V8 exhaust? 
Posted by: kg6dxn Nov 6 2011, 06:31 PM
Couldnt a guy make some Heat exchangers for the V8 exhaust?
Maybe with marine exhaust manifolds, but it's water heat. If you had good sheetmetal skills, a hot air exchanger could be made.
Posted by: 3d914 Nov 6 2011, 07:19 PM
I was planning to put one of these
into one of these
and hook up the stock fan. It would still use the heater tubes in the longs like a stock system. By locating it in the engine bay, routing should be less of a hassle.
Posted by: speed metal army Nov 6 2011, 10:56 PM
Couldnt a guy make some Heat exchangers for the V8 exhaust?
Maybe with marine exhaust manifolds, but it's water heat. If you had good sheetmetal skills, a hot air exchanger could be made.
Yes!Hot air xchngr is what im talking about.Not that hard.Has anyone done this?
Posted by: ruby914 Nov 20 2011, 02:00 PM
I was planning to put one of these
into one of these
and hook up the stock fan. It would still use the heater tubes in the longs like a stock system. By locating it in the engine bay, routing should be less of a hassle.
I like that box, where do you get it from?
Posted by: 3d914 Nov 29 2011, 09:37 PM
ruby,
Its from http://content.yudu.com/Library/A1t83w/CarBuilderSolutionsC/resources/183.htm. You want page 191. I believe they are in the UK.
They also show this . . .
Posted by: ThinAir Nov 29 2011, 11:49 PM
Its from http://content.yudu.com/Library/A1t83w/CarBuilderSolutionsC/resources/183.htm. You want page 191. I believe they are in the UK.
They've got some great stuff! Is there any reason why this couldn't be set up as an external oil cooler? I'm thinking that if you run one on each side and connect them up to the tube in the longs you could have heat like crazy regardless of whether you are aircooled or watercooled.
Posted by: 3d914 Dec 3 2011, 06:34 PM
Ernie, that's basically what I had in mind, except I was going to start with one and go from there.
Posted by: partwerks Dec 3 2011, 06:56 PM
The Renegade Hybrids under dash unit has the capability to run the air hoses up to the defrost vents or vent it out directly from the unit into the cab.
Posted by: BRAVE_HELIOS Nov 7 2014, 11:28 PM
I have a 71 Chalon with a SBC. When building the car, I incorporated a heater core in the fresh air blower case and ran a couple of feet of heater hose from it with the intention of someday getting it all connected. Well, that day is here. My question is whether it's feasible to tie the the heater core lines to the radiator inlet and outlet hoses via T's instead of running the heater core lines back to the engine's intake manifold and water pump.
What do you think... doable?
Posted by: BRAVE_HELIOS Nov 8 2014, 03:37 PM
I have a 71 Chalon with a SBC. When building the car, I incorporated a heater core in the fresh air blower case and ran a couple of feet of heater hose from it with the intention of someday getting it all connected. Well, that day is here. My question is whether it's feasible to tie the the heater core lines to the radiator inlet and outlet hoses via T's instead of running the heater core lines back to the engine's intake manifold and water pump.
What do you think... doable?
Surely someone has an answer; an opinion... something!
Posted by: Mike Bellis Nov 8 2014, 04:45 PM
Sorry, I didn't see the question. Yes, in theory you should be able to flow a heater core from the inlet and outlet of the radiator. Flow will vary based on things like hose size, port resistance, parasitic drag, pressure differential, etc... But it should work. If you can find a Y fitting and point it the right direction (with flow) it should work better.
Like this...
Posted by: BRAVE_HELIOS Nov 10 2014, 10:27 PM
Sorry, I didn't see the question. Yes, in theory you should be able to flow a heater core from the inlet and outlet of the radiator. Flow will vary based on things like hose size, port resistance, parasitic drag, pressure differential, etc... But it should work. If you can find a Y fitting and point it the right direction (with flow) it should work better.
Like this...
Thanks. I think I'll give it a try and see how it goes. What's the worst that can happen... no heat? Already there!
Posted by: BRAVE_HELIOS Nov 17 2014, 11:30 PM
Sorry, I didn't see the question. Yes, in theory you should be able to flow a heater core from the inlet and outlet of the radiator. Flow will vary based on things like hose size, port resistance, parasitic drag, pressure differential, etc... But it should work. If you can find a Y fitting and point it the right direction (with flow) it should work better.
Like this...
This might be a silly question but if I design the system so the heater core coolant T's off the radiator inlet and radiator outlet hoses; how does the coolant know to enter the heater core from the radiator inlet T and exit into the radiator outlet T. Or do I have that reversed? Or do I "T" in and out of the radiator's inlet hose? This is confusing!
Posted by: Mike Bellis Nov 17 2014, 11:53 PM
Pressure differential. it will flow. This is where angle, T size and internal resistance come into play.
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