There is no way to recirculate cold air from the smugglers box since it only has the compressor and ECU installed. The ambient air around the evaporator/blower is cooler but it blends with the frunk hot air once it gets past the carpet. A better solution would be to add small box fans to the recirculating side of both blend valve inputs to help move more air into the evaporator/blower.

Right, you would have to open the smuggler’s box lid for the air to flow through from the cabin.

@PorterF - you don't happen to have an anemometer do you? Was just curious of the flows from the griffiths blower. Or maybe just the face check. Can you feel the center vent on your face at full blast, medium setting? Can you feel it if you close upper and lower vents and only have the center/side/lower bowtie?

I ordered one and will report back. I will test the Griffith's fan on my '82 and stock fan on my '86. Both of them have the directional grille add-on for the bowtie vent.

I can definitely feel the center vent air on my face in the '82 on high, perhaps some on medium as well. On the '86 it only will hit my upper arm. IMHO it's a design flaw on the later style center vent that you can't aim it all the way at the driver.

Another nuance is the '82 has 3 sliders for the fresh air system and the '86 has 4, both have factory air.

***EDIT*** I realized my initial values were in meters per second, I have now converted them to MPH. My apologies.

Hi all - here are my results. This is with a $16 Amazon special small fan anemometer.

I didn't mess with the bowden cable setting since I believe they only deal with the heat/fresh air in the factory setup. Regardless, the knobs were all the way to the left. On both 911s where the bow tie vent is there are two small adjustable grills. I set all the grills to face straight out, and I moved the anemometer around until I found the highest reading I could get. On both cars the vents selected were foot well and forward dash vents (no air to windshield).

I left the 911s off (not running) but were plugged into a battery maintainer during the test, I noted the voltage on each at 13.4v.

<table width="303" cellspacing="0" cellpadding="0" border="0"><colgroup><col style="mso-width-source:userset;mso-width-alt:2998;width:62pt" width="82"> <col style="mso-width-source:userset;mso-width-alt:3766;width:77pt" width="103"> <col style="mso-width-source:userset;mso-width-alt:4315;width:89pt" width="118"> </colgroup><tbody><tr style="height:15.0pt" height="20"> <td style="height:15.0pt;width:62pt" width="82" height="20">
</td> <td style="width:77pt" width="103">'86 Stock Fan</td> <td style="width:89pt" width="118">'82 Griffiths Fan</td> </tr> <tr style="height:15.0pt" height="20"> <td style="height:15.0pt" height="20">
</td> <td>Large Vents</td> <td>Small Vents</td> </tr> <tr style="height:15.0pt" height="20"> <td style="height:15.0pt" height="20">Center Vent</td> <td align="right">MPH</td> <td align="right">MPH</td> </tr> <tr style="height:15.0pt" height="20"> <td style="height:15.0pt" height="20">Medium</td> <td class="xl65" align="right">4.7</td> <td align="right">9.17</td> </tr> <tr style="height:15.0pt" height="20"> <td style="height:15.0pt" height="20">High</td> <td class="xl65" align="right">9.2</td> <td align="right">15.6</td> </tr> <tr style="height:15.0pt" height="20"> <td style="height:15.0pt" height="20">Bowtie Vent
</td> <td class="xl65">
</td> <td>
</td> </tr> <tr style="height:15.0pt" height="20"> <td style="height:15.0pt" height="20">Medium</td> <td class="xl65" align="right">11.9</td> <td align="right">17.4</td> </tr> <tr style="height:15.0pt" height="20"> <td style="height:15.0pt" height="20">High</td> <td class="xl65" align="right">15.9</td> <td align="right">29.9</td> </tr> <tr style="height:15.0pt" height="20"> <td style="height:15.0pt" height="20">Side Vent
</td> <td class="xl65">
</td> <td>
</td> </tr> <tr style="height:15.0pt" height="20"> <td style="height:15.0pt" height="20">Medium</td> <td class="xl65" align="right">3.8</td> <td align="right">3.8</td> </tr> <tr style="height:15.0pt" height="20"> <td style="height:15.0pt" height="20">High</td> <td class="xl65" align="right">9.4</td> <td align="right">6</td> </tr> </tbody></table>

http://forums.pelicanparts.com/uploa...1629246100.jpg
http://forums.pelicanparts.com/uploa...1629246100.jpg

I’m curious, is there a dataset on the speed of the air exiting the blower unit itself and not from the vents? What’s the delta? Is there much force being lost through the ducting or is the blower itself not putting out the force.

Static pressure is a killer and finding a way to minimize it is critical to good airflow. Everything from bends to texture in the duct will slow the air down.

A small point that refers to balance of the blower/evac unit that Johnny mentioned way back. As to that unit itself I don’t think an outlet or inlet port should be blocked. It will affect the designed air flow thru the box, playing with the static pressure coming out. Perhaps this is why Johnny chose a 25-30% fresh intake air. So at some point as was said, the box reaches an optimum air flow that the driver likes. It seems like 0 is not optimum ( he said contradicting himself). The total balance thru ducts into and out of cabin, and back, is a different story. PS I received one package from CR today

So:

Pat have you got a patent on this modification yet?

Pat and Nick, did you both continue with this method? Seems the new A/C is putting out cold air just not a lot of air flow.

I've never been one afraid to find great solutions form others!

I have an issue with the old blower making a squealing sound so I presently don’t have it in the circuit. Once I fix it I will probably reinstall so it boosts the airflow in the center vent.

I was looking at this, the name is catchy.

https://www.amazon.com/gp/product/B08FL73F6G/ref=ox_sc_act_image_4?smid=A2NS3VXOIXXVDC&th=1

I had it hooked up briefly, the chillout blower. I believe it increased the speed by 1-2 mph more. I wasn't impressed enough to continue it. I may revisit since I am now running the dual upper vent switch which allows you to maximize the center vent blowing.

I am in agreement with your statement, the system does get cold, but the airflow is lacking. While it is better than the stock fan it is not better than the griffiths blower based on porterFs measurements. I think I would rather be blast in the face at 55f than have a cold 40f just barely hit me. My baked in the sun 120f cabin temp s10 cooling in sub 5 minutes can attest to that