Increasing the heater temperature mod.
01-04-2004, 08:00 PM
#1
Senior Member
Thread Starter
Join Date: Nov 2003
Posts: 181
Increasing the heater temperature mod.
I remember seeing a write up on increasing the temerature of the Max's heater. Can anybody provide a link or a how to on how to perform this modification.
It's going to be a high of 3 degree F tomorrow in Minneapolis. Thanks.
It's going to be a high of 3 degree F tomorrow in Minneapolis. Thanks.
01-04-2004, 09:08 PM
#2
Originally Posted by bosa1
I remember seeing a write up on increasing the temerature of the Max's heater. Can anybody provide a link or a how to on how to perform this modification.
It's going to be a high of 3 degree F tomorrow in Minneapolis. Thanks.
It's going to be a high of 3 degree F tomorrow in Minneapolis. Thanks.
01-05-2004, 06:51 AM
#11
Supporting Maxima.org Member
iTrader: (14)
Join Date: Dec 2000
Location: Ontario, Canada
Posts: 2,404
Originally Posted by bosa1
I remember seeing a write up to increase hot temp by 10 deg. F and AC by 10 deg. F.
It's a high of 0 deg. F/low -12 deg. F in Minneapolis today.
I need the extra 10 degrees F.
It's a high of 0 deg. F/low -12 deg. F in Minneapolis today.
I need the extra 10 degrees F.
I'm curious now... who's got 'search' access here??
EDIT: Okay I JUST got my search access enabled... (thanks Jane)... I'll see what I can dig up for you guys (and myself) on this issue.
01-05-2004, 09:57 PM
#14
Senior Member
Join Date: Jul 2003
Posts: 1,334
Originally Posted by theblue
come on guys... 80 or 85 is more then enough... esp. it's not like the car will warm up quicker with this mod or anything
You'll have super huge sweat stains in your pits, and it'll be 0 degrees outside, and people will think you're weird...
01-06-2004, 12:17 AM
#16
Senior Member
Join Date: Dec 2003
Posts: 501
Dude if your really ****ed about the cold do what I did. One have heated seats and two buy a good auto starter and start you car out your window in the morning since I live in a apartment and wait like exactly five minutes and sit in nice heated leather, and enjoy preheated car. 
01-06-2004, 04:26 AM
#17
Member who somehow became The President of The SE-L Club
iTrader: (19)
Join Date: Jun 2001
Posts: 16,033
Originally Posted by theblue
come on guys... 80 or 85 is more then enough... esp. it's not like the car will warm up quicker with this mod or anything
I keep my temp around 72 on really cold days. Thats plenty warm enough inside a cars cabin. As theblue said, your car will not heat up any quicker by turning up the temp.
01-06-2004, 08:49 AM
#18
Senior Member
Thread Starter
Join Date: Nov 2003
Posts: 181
Originally Posted by theblue
come on guys... 80 or 85 is more then enough... esp. it's not like the car will warm up quicker with this mod or anything
Sorry guys but you are incorrect regarding the way to heat up my car’s cabin when it’s dark outside, temperature is in the negative degree F range while traveling at highway speeds.
Let’s use the simple laws of thermodynamics:
A) The heater is throwing out a volume of air each minute, let’s say 100 cubic liters. Temperature of the air is at 85 degrees F. With this output we have a very specific amount of energy being introduced into the car’s cabin. Because it is dark outside, there is no increase in temperature from the greenhouse effect due to the lack of sunlight during a predawn 25 minute commute.
B) The insulating property of glass is not great so we are loosing energy (heat) from that source and we are also loosing energy from other parts of the car’s cabin in contact with the outside ambient temperature.
What we end up with at the end of my commute are cold feet and cold hands. This does not occur when temps are +10 degrees F. Increasing the heater temperature output would increase the amount of heat in the cabin (energy introduced (A) minus energy loss from energy transfer from outside ambient (B) = final cabin temperature).
In conclusion, a 10 degrees increase in cabin heater output would help increase the final temperature of the car’s cabin on really cold mornings. Heated seats would help and I’m in the process of looking for a good junkyard full leather seat package (front and rear).
I’m still hoping somebody has some information on how to perform this 10 degree modification. Thanks
01-06-2004, 09:05 AM
#20
When it's zero outside I keep my recirculate system closed. (it's the button on the far left right above the fan switch.) This means the heater is reheating inside air and not pulling in outside air. That helps quite a bit.
Also, don't run your defroster at all. It kicks the AC on whether you want it or not.
Instead, to keep your windows frost free crack open one of the back windows or the sunnroof if you have one. I open the roof a crack and this allows the moisture from my "sweaty pits" to escape rather than freeze on the glass.
The other thing I do in winter is block airflow to at least half of the radiator.
This means at highway speeds my cooling system will be at max temp and therefore my heater will also be at max temp.
This should be ALL that you need to do.
If you aren't getting enough heat this way you have a BAD thermostat and mod'ing the heater won't help.
Also, don't run your defroster at all. It kicks the AC on whether you want it or not.
Instead, to keep your windows frost free crack open one of the back windows or the sunnroof if you have one. I open the roof a crack and this allows the moisture from my "sweaty pits" to escape rather than freeze on the glass.
The other thing I do in winter is block airflow to at least half of the radiator.
This means at highway speeds my cooling system will be at max temp and therefore my heater will also be at max temp.
This should be ALL that you need to do.
If you aren't getting enough heat this way you have a BAD thermostat and mod'ing the heater won't help.
01-06-2004, 09:29 AM
#21
Senior Member
Thread Starter
Join Date: Nov 2003
Posts: 181
Originally Posted by maximomo
When it's zero outside I keep my recirculate system closed. (it's the button on the far left right above the fan switch.) This means the heater is reheating inside air and not pulling in outside air. That helps quite a bit.
Also, don't run your defroster at all. It kicks the AC on whether you want it or not.
Instead, to keep your windows frost free crack open one of the back windows or the sunnroof if you have one. I open the roof a crack and this allows the moisture from my "sweaty pits" to escape rather than freeze on the glass.
Also, don't run your defroster at all. It kicks the AC on whether you want it or not.
Instead, to keep your windows frost free crack open one of the back windows or the sunnroof if you have one. I open the roof a crack and this allows the moisture from my "sweaty pits" to escape rather than freeze on the glass.
Sometimes I activate the recirculate feature but the windows ice/fog up. I'll try the window cracking method with recirculate on. I will not be a fan of the wind/road noise though. I'll see if the windows stay clear with this method.
01-06-2004, 10:01 AM
#22
Originally Posted by maximomo
When it's zero outside I keep my recirculate system closed. (it's the button on the far left right above the fan switch.) This means the heater is reheating inside air and not pulling in outside air. That helps quite a bit.
Also, don't run your defroster at all. It kicks the AC on whether you want it or not.
Instead, to keep your windows frost free crack open one of the back windows or the sunnroof if you have one. I open the roof a crack and this allows the moisture from my "sweaty pits" to escape rather than freeze on the glass.
The other thing I do in winter is block airflow to at least half of the radiator.
This means at highway speeds my cooling system will be at max temp and therefore my heater will also be at max temp.
This should be ALL that you need to do.
If you aren't getting enough heat this way you have a BAD thermostat and mod'ing the heater won't help.
Also, don't run your defroster at all. It kicks the AC on whether you want it or not.
Instead, to keep your windows frost free crack open one of the back windows or the sunnroof if you have one. I open the roof a crack and this allows the moisture from my "sweaty pits" to escape rather than freeze on the glass.
The other thing I do in winter is block airflow to at least half of the radiator.
This means at highway speeds my cooling system will be at max temp and therefore my heater will also be at max temp.
This should be ALL that you need to do.
If you aren't getting enough heat this way you have a BAD thermostat and mod'ing the heater won't help.
Guys I tried searching last night, but came up with nothing.
I thought the reason the A/C kicked in when you put the defroster was to clear up the windows, it makes the heater throw out dry hot air, instead of the hot humid air. I do this all the time and the car still gets prette darn warm. I live in San Diego, it has gotten into the low 30s F here at night, but it is not as cold as the temperatures that you guys deal with
.
01-06-2004, 07:02 PM
#23
Senior Member
Join Date: Aug 2003
Location: Montreal
Posts: 742
Originally Posted by bosa1
Sorry guys but you are incorrect regarding the way to heat up my car’s cabin when it’s dark outside, temperature is in the negative degree F range while traveling at highway speeds.
Let’s use the simple laws of thermodynamics:
A) The heater is throwing out a volume of air each minute, let’s say 100 cubic liters. Temperature of the air is at 85 degrees F. With this output we have a very specific amount of energy being introduced into the car’s cabin. Because it is dark outside, there is no increase in temperature from the greenhouse effect due to the lack of sunlight during a predawn 25 minute commute.
B) The insulating property of glass is not great so we are loosing energy (heat) from that source and we are also loosing energy from other parts of the car’s cabin in contact with the outside ambient temperature.
What we end up with at the end of my commute are cold feet and cold hands. This does not occur when temps are +10 degrees F. Increasing the heater temperature output would increase the amount of heat in the cabin (energy introduced (A) minus energy loss from energy transfer from outside ambient (B) = final cabin temperature).
In conclusion, a 10 degrees increase in cabin heater output would help increase the final temperature of the car’s cabin on really cold mornings. Heated seats would help and I’m in the process of looking for a good junkyard full leather seat package (front and rear).
I’m still hoping somebody has some information on how to perform this 10 degree modification. Thanks
Let’s use the simple laws of thermodynamics:
A) The heater is throwing out a volume of air each minute, let’s say 100 cubic liters. Temperature of the air is at 85 degrees F. With this output we have a very specific amount of energy being introduced into the car’s cabin. Because it is dark outside, there is no increase in temperature from the greenhouse effect due to the lack of sunlight during a predawn 25 minute commute.
B) The insulating property of glass is not great so we are loosing energy (heat) from that source and we are also loosing energy from other parts of the car’s cabin in contact with the outside ambient temperature.
What we end up with at the end of my commute are cold feet and cold hands. This does not occur when temps are +10 degrees F. Increasing the heater temperature output would increase the amount of heat in the cabin (energy introduced (A) minus energy loss from energy transfer from outside ambient (B) = final cabin temperature).
In conclusion, a 10 degrees increase in cabin heater output would help increase the final temperature of the car’s cabin on really cold mornings. Heated seats would help and I’m in the process of looking for a good junkyard full leather seat package (front and rear).
I’m still hoping somebody has some information on how to perform this 10 degree modification. Thanks
knock it off.. get a girl, and warm yourselves together on the rear seat !
01-06-2004, 07:10 PM
#24
Supporting Maxima.org Member
iTrader: (14)
Join Date: Dec 2000
Location: Ontario, Canada
Posts: 2,404
Originally Posted by twiggy144
knock it off.. get a girl, and warm yourselves together on the rear seat !
I DO however have a blanket in my trunk for any such occasions!
01-06-2004, 08:56 PM
#25
Junior Member
Join Date: Feb 2003
Posts: 17
I think many of you are under the wrong impression of how the temp setting in your car works. Just because you set it at 80 doesn't mean it blows 80 degree air. If the temp in your car is 30, it's going to set the vent doors to route the max amount of air through the heater core. As it aproaches 80 in the cabin, less air is routed throught the heater core. Being able to set it to 90 won't help. It will still route the max amount of air through the heater core. As long as the door is operating to route the max amount of air through the heater core, the only way to increase the temp of the air then is to increase the temp of the coolant running through your engine. You may try putting cardboard in front of the radiator. This should at least heat your engine quicker, giving you warm air faster.
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