A/C Removal

[Honcho]

For those of you who have deleted the A/C system, when removing the front condensers, do you take out the entire duct and fan assembly, or just gut the duct (i.e., remove condensers and fans) and put the empty ducts back in the car? I can't tell if the ducts are necessary for any structural purpose (support bumper, hold wire harnesses, etc.)

 

[sca037]

On our purple turbo NSX we removed the entire condenser/fan/bracket assemblies from both sides, none of it was structurally needed.
Plus, it saved a lot of weight and made a nice pathway to route cooling ducts to the front brakes.

 

[Honcho]

On our purple turbo NSX we removed the entire condenser/fan/bracket assemblies from both sides, none of it was structurally needed.
Plus, it saved a lot of weight and made a nice pathway to route cooling ducts to the front brakes.

Thanks, that is really helpful! I am considering using those scoops for brake ducts. I was thinking of fabricating some kind of in-line damper that could be closed for normal street operation and opened at the circuit. [MENTION=13294]CL65 Captain[/MENTION]

 

[sca037]

Depending on what pads you are using, it's probably not needed to have the ducting 'switchable' between street and track mode.

I used a pair of dual outlet ducts, since I already owned them from my collection of many years of race car spare parts.

 

[jaja]

^^ that's a clean setup

 

[Mac Attack]

You can remove everything - just ziptie the fan wires and possible others so they are secured and out of the way. You can also remove the front temp sensor and aspirator fan for even more weight savings. Manually adjusting the heater is easy enough!

This is what I was left with:View attachment 155527

However, you'll now have a lot more air flowing around and it will cause the front to feel too light unless you block it off with brake ducts, auxiliary lights, or just completely. What did Honda do for the Type S and R?

I had no reason for brake ducts as I don't track often, so I made aluminum plates to completely block off the airflow:
View attachment 155528

 

[Honcho]

You can remove everything - just ziptie the fan wires and possible others so they are secured and out of the way. You can also remove the front temp sensor and aspirator fan for even more weight savings. Manually adjusting the heater is easy enough!

This is what I was left with:View attachment 155527

However, you'll now have a lot more air flowing around and it will cause the front to feel too light unless you block it off with brake ducts, auxiliary lights, or just completely. What did Honda do for the Type S and R?

I had no reason for brake ducts as I don't track often, so I made aluminum plates to completely block off the airflow:
View attachment 155528

Thanks Dave- those pics are very helpful. I likely will go with a duct setup, as this will be mostly a track day toy (my NSX version of a GT3 RS, essentially, which is what the NSX-R and S-Zero were supposed to be after all). On the NA1 R, they used these guards. Not sure if the S-Zero also used them- it has been exceedingly difficult to figure out exactly what parts went on that car. It is the rarest of all NSXs (if you don't count the 5 NSX-R GT unicorns). I know it borrowed many NA1 R parts, as it essentially replaced the R in the product lineup until the NA2 R showed up. Not sure about the grills though.