austinramsay

I have a greddy t78 turbo on my fd and was wondering if theres anyone that runs a/c with a single turbo setup? How do you do it and what am i going to have to do?

Vicoor

Yes you can.

With the stock configuration the ECU receives an A/C request, and depending on conditions turns the compressor on via a relay. So depending on which engine management you run you may be able to emulate this setup, or may have to rig something else up.

Having the compressor, plumbing, and such does take up space and requires additional "engineering" to work around.

But there's no good reason a single turbo installation should preclude the use of A/C.

austinramsay

Im running an apexi power fc will that be alright? I honestly dont know where to start with putting it all back together, how am i going to do custom plumbing? And where is the compressor going to be mounted? Im going to need to make custom brackets arent i?

Vicoor

If you are running a PFC then it should be plug and play. You should not have to move the compressor.
Depending on what turbo and manifold you use, the air pump on the passenger side may be in the way, if that's what you mean. It has nothing to do with the A/C, it's for emmisions.
As far as A/C plumbing you may have to tweak a couple pipes but it's more a matter of installing all to necessary turbo plumbing to work around the A/C parts.

Jobro

iTrader: (2)

I've been looking into this myself.

My understanding based off USA spec parts.

The A/C switch tells the heater / cooling control unit you want A/C on. A/C is never on when the fan is off. So if you have fan set to any setting 1-4 the heater / control unit knows you want A/C.

There is an pressure regulator with a window function, so that it is only enabled between a valid range of air con pressures. I can't remember the exact details but it turns off if the A/C gets too cold. It also turns off if it gets too hot (means theres no gas in the system).

The simplest system would just use a relay based on whether the A/C switch was on or not.

Better again would be disable the A/C whenever the RPM is above 3500.
Better again would be disable the A/C whenever the load is above x.
Better again would be disable the A/C whenever engine RPM is below 700rpm
Better again would be disable the A/C whenever the engine coolant is above a certain temperature (reduce load!)

Wantanotherseven

iTrader: (1)

Any luck with this? I'm looking at an FD and it has its AC taken out as well. I wanna know how much of a pain in the *** it will be to reinstall it

austinramsay

Havent attempted it yet, hopefully its not too bad i need it back in a couple of months before it gets into the 100's again

Wantanotherseven

iTrader: (1)

Do you know exactly what you gotta do? Or have you found a "how to" on how/what to do

austinramsay

Not really haha if you find one or someone else has a link to one let me know pleease!

Slow2k

iTrader: (9)

Find an ac removal guide and do the reverse. There's not much to installing the ac unit itself. The compressor will bolt under the power steering pump as usual and you'll have to see if you can route the lines to the firewall somehow as well as how to mount the condenser that will be the hardest parts. There are guides to how to use a/c with a pfc in the PFC section.

IRPerformance

iTrader: (41)

I do it all the time. I have built 600 hp cars with a/c. The main challenges are mounting the condenser and routing the lines depending on the intercooler setup. It is also a good idea to heat sleeve the a/c lines that run close to the turbo and exhaust.

fd3s20b

I have a single turbo and i have all my original a/c intact. I didn't have to move or fabricate anything.

2RotorsNaDream

iTrader: (7)

My friend has a huge BW S475 making about 800whp with A/C intact.

Rx7maluco

iTrader: (1)

Can't wait to find a a/c system for my fd.. After I'm done with other projects I got going on..