airconditioning

[zedls1]

Hey fellow zedder's, can anyone tell me if airconditioning can be intergrated into exisiting heater/ fan system in 240z?

[matt drago]

I've got a '73 240Z that had an after market A/C installation.  I have it out of the car at the moment because I am still rebuilding the car and the A/C needs a lot of freshening up.  Inside the car, the condenser (I think that the name of the part of the A/C system inside the car) Is inside of a plastic box that attaches to the internal/recirculate inlet of the blower fan.

 

So I guess the answer is yes, A/C can be integrated into the factory heater/fan system.

 

I can take photos of the parts if you like, but not until next week as the car is at my folks place.

 

Cheers,

 

Matt D

[oldmates260z]

I have just put in a "integrated" system into a 74 260Z, not sure if its the same as what you would have under the dash of a 240Z?? As it is an early 260 so it may be close.

 

The evaporator is fitted directly behind the vents in the centre of the dash

 

What it looks like was done in Australia, very common in the 1970's, was that a aftermaket box was made up (in sheetmetal) and locally sourced parts put into them as not many cars came with factory fitted AC. I would guess this would suit a 240Z if they have the same heater box as the 260Z.

 

If you get a AC evaporator (what goes under the dash) from a 75 model and beyond it will be a plastic box and you would have to replace the heater box and all the dash controls as they run on a vacuum system, not cable. Maybe taht is what Matt D has??

[biggels240z]

Hi guys

ive fitted in a 260z air conditioning system in to my 71 240z , i did have to modify the heater control mechanism, to get it to fit , i had to bent the back section down and now the levers go in a very small arc instead of dead flat but i plumbed it all in and it looks great and works quite well

[matt drago]

The plastic box that I have is separate from the heater box.  The AC evaporator (thanks for the correction) is in a plastic box that is attached to the internal air intake of the blower unit.  All of the flaps are cable controlled in the 240z.  The only issue that I have at the moment is that as the AC is an add one, you can have the AC and heater running at the same time.  I am thinking of adding some micro switches to only allow the AC to come on if the vents are opened so that air flows through the evaporator and that the valve for the heater core is closed.

 

I've attached a photo that I took whilst dismantling the car.  If you look beneath the glove box door, your can see the AC switch and then behind and beneath that you can see the blower unit, and then the big black plastic box beneath that is where the evaporator is in.  The bottom tray of this black box has a pipe leading out of the firewall for the water to drain out of.

 

Hope this helps.

[oldmates260z]

Interesting to hear that the 260 AC fitted into the 240, was it a steel or plastic box?

 

Wow, did not realise how much different the centre of a 240 dash is to the 260.

 

The evporators in the 260Z are separate too, however with the later AC units you have to change the heater as well as it operates on vacuum control and a mirco switch is in the vent selector.

 

My 260Z has the same AC switching problem. The air only goes through the evap coil when the air comes out the centre vents so I have to be sure to switch the AC off when the air is directed to the floor and through the heater coil

 

Below is a photo of the later model evap unit, did not have one of the one I used

[zedls1]

Thank's for the info guy's, any idea on $$$, new or reco?

[oldmates260z]

Not sure you could buy one new or reconditioned.

I paid $150 for a whole system taken out of a wreck from a guy up here in Brisbane. It came with everything but I could not use it all due to the condition of the parts. (I am in the AC game a did source the other bits without too much trouble.) You could try him, he has a couple of sheds of parts

email or phone zbitz@westnet.com.au or 0754645056

Things to watch:

- fit new TX valve, receiver drier and hoses. Not worth reusing unless you are sure they are OK

- fit a deice thermostat, the later factory AC came with one

- the orginal compressors are expensive to repair. If you get a good one it should be OK otherwise you can get a aftermaket bracket and fit a standard automotive Sanden compressor

- you loose the time mark with the factory compressor bracket

- you may need either a cowl around teh radiator fan or a electric fan to boost the air though the radiator if it overheats

Hope that helps

[maddos]

I've started swapping the OEM aircon setup out of my 76 260 into my 1/75 model.

I've noticed some interesting things in the process.

I was planning to just install the cooling unit straight into the already fitted dash unit. Thought this would be fairly simple job. Turns out the cooler is too large to fit with this setup which uses all the mechanical operated flap controls. The vacuum actuated setup allows the cooling unit to sit lower behind the front panel controls.

In the end I swapped the complete control unit from the donor car which has the later model vacuum operated controls. Then when I went to plug in the fan blower unit found it to have 6 pin plug on newer unit as opposed to 4 pin on older model. Grabbed the donor car fan unit and noticed blower on new unit is rated 160w compared to 80w on old model. Fan speed control also had changed to 4 speed instead of 3, hence the extra pins. I suspect they must have beefed it up for a bit more oomph to blow through the cooling unit.

 

Oldmate - looks like I found the same thing as you. Should have read up yesterday before I started. Did you find the same thing with your blower fans?

[24OZ]

The plastic box that I have is separate from the heater box.  The AC evaporator (thanks for the correction) is in a plastic box that is attached to the internal air intake of the blower unit.  All of the flaps are cable controlled in the 240z.  The only issue that I have at the moment is that as the AC is an add one, you can have the AC and heater running at the same time.  I am thinking of adding some micro switches to only allow the AC to come on if the vents are opened so that air flows through the evaporator and that the valve for the heater core is closed.

 

I've attached a photo that I took whilst dismantling the car.  If you look beneath the glove box door, your can see the AC switch and then behind and beneath that you can see the blower unit, and then the big black plastic box beneath that is where the evaporator is in.  The bottom tray of this black box has a pipe leading out of the firewall for the water to drain out of.

 

Hope this helps.

 

 

 

this is a good thing for defogging the screen in winter while still keeping warm,i would leave it as is

ps if any one is looking for the factory piggy back aircon set up i have one for sale,PM me

[dazzed]

260zeds air con were all fully itergrated so i really dont know how it would fit a 240z, a small under dash unit fitted under the glove box fits ok the rest has to be custom made new hoses , condensor etc, 260z compressor and bracket is ok to use with most systems, unicla japan is the only after market system that intergates with the origonal ventilation system on a 240z without to much trouble. but just as tim said, new thermal exansion valve condensor and hoses is the  go , most needs to be custom made as nothing just bolts straight in, good idea tho air con in a 240z perfect.

[biggels240z]

Ive fitted the 260z air conditioning intomy 71 240z i did have to modify the control levers for the heater controls , they now no longer move in straight lines across the dash ,the move in a slight arc motion but the system works really well !

[dazzed]

260 zed systems are quite complex even early ones , vaccuum hoses ,wirea and the evaprator is huge, i guess it must have been quite a juggle, with a bit of trial and error im sure, anyway well done,pleasant hot days driving ahead

[blue fairlady]

Hi I am about to put an A/C into my 240Z. Can anyone shine a light on where I could get a bracket for a sanden 508 compressor?? Thank you.

[nizm0zed]

8mm plate steel, an angle grinder, drill and an arc welder.

an afternoon should make you a nice solid bracket.

[oldmates260z]

The after market ones they fit to the Patrols with the L series engines are the ones to get.

 

I bought one from a mob in Brisbane but they ahve stores around Australia. I will see if I can find the info.

[blue fairlady]

Thank you sir , please supply the contacts.

Thank you for the home made suggestion, I shall chect that if I cannot get one from "mob".

[oldmates260z]

Cooldrive Distribution

 

+613 98967300

[blue fairlady]

Thanks oldmates, I rang the co, and they seem to need the part no, and they say they supply parts to get onto the original stock brackets, hence converting the original to house the sanden 508 compressor.

however in my case I have no bracket in the engine at all, just 4 holes in the block?

Is that what you've got, do I need to get the original bracket first??  Thanks

[aircobra]

any updates on this thread?

can anyone tell where the hoses go thru the firewall?

[PB260Z]

any updates on this thread?

can anyone tell where the hoses go thru the firewall?

Hi

 

In my '77 they are on the left side of the firewall.

(In the middle of the attached image)

Edited March 5, 2016 by PB260Z

[oldmates260z]

Assume you are asking for a 240? Not sure if they have the allowance

 

Here is it for a 260

[aircobra]

yes, sorry the question is for a factory 240z install. i believe they were hitachis

[specialp3]

Hi,

 

Not sure if the attached helps, I was sent this years ago from a contact in Japan that said 240z's were available with factory air.

 

Cannot confirm or deny.

[specialp3]

Sorry, image attached this time.