Going heaterless in SoCal
05-14-2014, 11:27 AM
#1
Rennlist Member
Thread Starter
Going heaterless in SoCal
Living in SoCal commuting in my daily driver I almost never use the heater, the defroster occasionally - maybe once or twice a year.
I can't remember if I ever used the heater or defroster in my old 964; it barely worked anyway with the engine blower removed.
A/C is another issue being on all the time in my daily driver.
Anyway, I bought a set of stock headers without the heat exchangers (like 993 Supercup), and have decided to go heaterless but with air conditioning still working.
I plan to put screens or filters over the heat inlets in the chassis to allow air to be drawn in if defroster or heater is on FWIW.
Anyone else done this, any caveats as far as CCU operation, fumes in cockpit or whatever?
I weighed the components of the cast aluminum tube, stainless tubes, silicon tubing, bypass valves etc. and this comes to almost 15 pounds. The headers alone save another 10 pounds for a total of almost 25 pounds, almost approaching the mass of A/C surprisingly and all this is mass aft of the CG unlike A/C.
The other advantage is the car will be really clean underneath with just headers and no heater pipes at all. The engine shroud will simply have a block off plate at the heater pipe take off (like RSR does) with a tube coming from it going to the distributor.
Comments?
I can't remember if I ever used the heater or defroster in my old 964; it barely worked anyway with the engine blower removed.
A/C is another issue being on all the time in my daily driver.
Anyway, I bought a set of stock headers without the heat exchangers (like 993 Supercup), and have decided to go heaterless but with air conditioning still working.
I plan to put screens or filters over the heat inlets in the chassis to allow air to be drawn in if defroster or heater is on FWIW.
Anyone else done this, any caveats as far as CCU operation, fumes in cockpit or whatever?
I weighed the components of the cast aluminum tube, stainless tubes, silicon tubing, bypass valves etc. and this comes to almost 15 pounds. The headers alone save another 10 pounds for a total of almost 25 pounds, almost approaching the mass of A/C surprisingly and all this is mass aft of the CG unlike A/C.
The other advantage is the car will be really clean underneath with just headers and no heater pipes at all. The engine shroud will simply have a block off plate at the heater pipe take off (like RSR does) with a tube coming from it going to the distributor.
Comments?
05-14-2014, 12:35 PM
#2
Banned
Join Date: Aug 2011
Location: 6feet under snow of CANADA
Posts: 3,665
Likes: 0
Received 0 Likes
on
0 Posts
a/c and heater blower unit left the back of my car last night. I wish I could go heaterless but living up north it just cant happen. I wish I could drop the added weight soo much. Sounds like a good idea for a southern car. enjoy the weight loss
05-14-2014, 01:46 PM
#4
Race Car
I run mine open (headers without heat etc) and have noticed if I am idling or in slower traffic i notice the smell of fumes in the cabin. I am going to block mine off completely to see if it stops. If it creates problems with the CCu operation I will post.
05-14-2014, 02:03 PM
#5
Rennlist Member
Thread Starter
A thought I had is to also remove the muffler tubes in the rocker sections that carry the heated air forward in the chassis for even more weight loss.
One could then block off the openings at the rear and set up the system to recirculate cabin air in heater mode by removing the hoses at the footwell that go to the heater flap valves.
One could then block off the openings at the rear and set up the system to recirculate cabin air in heater mode by removing the hoses at the footwell that go to the heater flap valves.
05-14-2014, 03:58 PM
#6
I've had no problems or exhaust fumes. front fans still blow tons of air from the front intake.
the rear tubes going into the body are covered with canvas
my cheapo scale showed a total weight loss of 19.6lbs.
the rear tubes going into the body are covered with canvas
my cheapo scale showed a total weight loss of 19.6lbs.
05-14-2014, 07:58 PM
#7
Banned
Join Date: Aug 2011
Location: 6feet under snow of CANADA
Posts: 3,665
Likes: 0
Received 0 Likes
on
0 Posts
since were on the topic, question as per heat removal,
There is a 4 way vac tube that came off my rear blower assembly
one of the tubes has no where to go do I just cap this off?
any ideas..?
There is a 4 way vac tube that came off my rear blower assembly
one of the tubes has no where to go do I just cap this off?
any ideas..?
Trending Topics
05-14-2014, 09:31 PM
#10
Burning Brakes
Living in SoCal commuting in my daily driver I almost never use the heater, the defroster occasionally - maybe once or twice a year.
I can't remember if I ever used the heater or defroster in my old 964; it barely worked anyway with the engine blower removed.
A/C is another issue being on all the time in my daily driver.
Anyway, I bought a set of stock headers without the heat exchangers (like 993 Supercup), and have decided to go heaterless but with air conditioning still working.
I plan to put screens or filters over the heat inlets in the chassis to allow air to be drawn in if defroster or heater is on FWIW.
Anyone else done this, any caveats as far as CCU operation, fumes in cockpit or whatever?
I weighed the components of the cast aluminum tube, stainless tubes, silicon tubing, bypass valves etc. and this comes to almost 15 pounds. The headers alone save another 10 pounds for a total of almost 25 pounds, almost approaching the mass of A/C surprisingly and all this is mass aft of the CG unlike A/C.
The other advantage is the car will be really clean underneath with just headers and no heater pipes at all. The engine shroud will simply have a block off plate at the heater pipe take off (like RSR does) with a tube coming from it going to the distributor.
Comments?
I can't remember if I ever used the heater or defroster in my old 964; it barely worked anyway with the engine blower removed.
A/C is another issue being on all the time in my daily driver.
Anyway, I bought a set of stock headers without the heat exchangers (like 993 Supercup), and have decided to go heaterless but with air conditioning still working.
I plan to put screens or filters over the heat inlets in the chassis to allow air to be drawn in if defroster or heater is on FWIW.
Anyone else done this, any caveats as far as CCU operation, fumes in cockpit or whatever?
I weighed the components of the cast aluminum tube, stainless tubes, silicon tubing, bypass valves etc. and this comes to almost 15 pounds. The headers alone save another 10 pounds for a total of almost 25 pounds, almost approaching the mass of A/C surprisingly and all this is mass aft of the CG unlike A/C.
The other advantage is the car will be really clean underneath with just headers and no heater pipes at all. The engine shroud will simply have a block off plate at the heater pipe take off (like RSR does) with a tube coming from it going to the distributor.
Comments?
05-15-2014, 01:16 AM
#12
Rennlist Member
I'd do a RS bypass or something. I really haven't used heat in a long time, in either of the 911's, but found that on several occasions making runs up Palomar or Mesa Grande in early morning-defrost is mandatory if the marine layer extends to the east.