AC systems

[Ron Earp]

And interesting line in the IT rules:

9.1.3e
Air conditioning systems may be removed in whole or in part.

"Air conditioning systems" isn't defined in the GCR Glossary. A look through the Ford Factory Shop manual defines AC as:




Over and over in the manual. Lots of pictures of the AC housing, complete AC system, internal AC system, etc. and they all reference this:



And then of course you have 9.1.3g which states:
Engine coolant fluid, coolant/heater hoses and clamps may
be substituted. Heater hoses may be plugged. Heater water
control valve(s) may be added or substituted. Heater core and
hoses shall not be removed.

Indicating the heater core MUST remain. Along with hoses, but I haven't seen a car with heater hoses in a long time.

I think one could make an argument that you could stick my heater core through the firewall and hang it in space, with hoses, and be legal. And, might could argue you could toss the entire thing, heater core too, based on 9.1.3d because evidence can be provided that the heater core is included in the AC system assembly according to factory docs.

In the end I will do neither and keep the system. The box weighs something like 3.X lbs, the motor is 3.5 lbs, and the heater core is around 2.5 lbs. That isn't a lot of weight to have a working defroster.

[lateapex911]

I always laugh when guys put the car on the trailer when it rains. They qualified, they are out the money, but they say their windshield fogs. yea, no heater lines will do that. I get they want to save weight, but ALL of them aren't Will Power, and I bet NONE of them can tell the difference if 10 pounds is added to the car ....it's just a mental thing for them. "Real race cars don't have heater cores".
Well, my shelf has a bunch of trophies I won in the rain in my what must be fake race car, LOL. The one that has a fully operating heater core, that not only keeps my windshield clear in the rain, but acts like an addition radiator should I need supplementary cooling, if the radiator gets blocked with paper or something in the race.

[Ron Earp]

I always laugh when guys put the car on the trailer when it rains. They qualified, they are out the money, but they say their windshield fogs. yea, no heater lines will do that. .

I can see that happening. I raced in the rain twice with my old Z. It had the heater core, but a seized blower motor and no lines to the core. I couldn't see anything during the race, nada.

However, there might be a much more space efficient and lighter way to add a heated blower. Could be somebody makes a bilge pump style heater with heated coils in it, or something similar.

[Gary L]

However, there might be a much more space efficient and lighter way to add a heated blower. Could be somebody makes a bilge pump style heater with heated coils in it, or something similar.

And exactly where is that allowance, in the ITCS?

[Ron Earp]

And exactly where is that allowance, in the ITCS?

Well, along the same vein where in the ITCS is the allowance for a cool suit?

As for the heater:

Ducting may be added to provide fresh air to the driver/
passenger compartment. This ducting shall be located in the
driver and/or passenger window area, with no modifications
to the bodywork. Only the cooling duct is permitted in the
window area. It is not permitted to otherwise fill in the window
area. The complete duct assembly in the plane of the window
shall be no larger than 100 square inches.

I suppose you could argue that your duct comes in feeds a heater/blower and it is delivering air to the driver/passenger compartment.

[Flyinglizard]

I pull the AC parts out of the box, and stuff the heater core back in. (For the It cars.)
For the Chumpcars, I draw warm air off of the floor behind the header, duct it straight onto the glass.
Just a piece of vertcially mounted dryer vent hose ,with the bottom at the floor , maybe 1in gap to the floor works very well. Hot air rises, etc.

[Z3_GoCar]

And interesting line in the IT rules:

9.1.3e
Air conditioning systems may be removed in whole or in part.

"Air conditioning systems" isn't defined in the GCR Glossary. A look through the Ford Factory Shop manual defines AC as:




Over and over in the manual. Lots of pictures of the AC housing, complete AC system, internal AC system, etc. and they all reference this:



And then of course you have 9.1.3g which states:
Engine coolant fluid, coolant/heater hoses and clamps may
be substituted. Heater hoses may be plugged. Heater water
control valve(s) may be added or substituted. Heater core and
hoses shall not be removed.

Indicating the heater core MUST remain. Along with hoses, but I haven't seen a car with heater hoses in a long time.

I think one could make an argument that you could stick my heater core through the firewall and hang it in space, with hoses, and be legal. And, might could argue you could toss the entire thing, heater core too, based on 9.1.3d because evidence can be provided that the heater core is included in the AC system assembly according to factory docs.

In the end I will do neither and keep the system. The box weighs something like 3.X lbs, the motor is 3.5 lbs, and the heater core is around 2.5 lbs. That isn't a lot of weight to have a working defroster.

That's what I did. My car was never avaliable without AC, so the box and fan are part of the AC system. Per the rules I installed the heater core and a couple of the heater hoses. It's easy to keep the box if you already have it. But if you're starting with a race car where it's already removed then, just finding the heater core is way easier. As for having to deal with defrosting, that's for places that see precipitation. We're the second driest place in the world, behide the Attacama.