Air to Air Intercooler ducting/shroud for 818s and 818c interest?

[bbjones121]

I made this duct/shroud from HVAC material. It is fed by the side vents and actually works very well at maintaining the intercooler temp when driving. I also have water sprayers in there with a tiny tank behind passenger seat that I can instantly drop the intercooler temp with if stopping and starting a lot.

I have a cousin that could potentially make this out of fiberglass. If they were able to make a mold for it would anyone else be interested? The goal i have is to end the duct right below the rear roll bar support with a 4" opening or larger so that it would have the option of using the side vents like it have and/or the coupes roof ducts down into it.

This would work with either the 818s or 818c. I was planning on wrapping it in carbon fiber vinyl or painting it then putting an emblem on it so that it looks nice through the 818c rear hatch glass.

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[Ajzride]

I'm going to be doing the same thing, so I would be interested in seeing what it would cost.

[AZPete]

I'm not getting pics, just a circle with a line through it.

[bbjones121]

weird, are they showing now? They didn't show up on my phone, but they show up on my computer when i open this thread

[bbjones121]

I just clicked the box retrieve instead of just using my google photos link.

[Ajzride]

I can see them fine.

[Kurk818]

How does the air enter on the side ducts?

[AZPete]

I can see the pics now. Are you using the side duct vents from Factory Five?

[Sgt.Gator]

Have you tried blocking off one of the ducts at the side intake and seeing how your temps change? I'm asking because normally two intakes to one common plenum don't work as well as a single intake. The reason being that the pressure from both sides has to be equal, which it rarely is. So some of the air from the higher pressure side stops the air from the lower pressure side and actually can push it back out, lowering overall flow thru the cooler. The system could be made 50% less complex, and the other side scoop can be used for things like an oil cooler or tranny cooler.

[bbjones121]

Have you tried blocking off one of the ducts at the side intake and seeing how your temps change? I'm asking because normally two intakes to one common plenum don't work as well as a single intake. The reason being that the pressure from both sides has to be equal, which it rarely is. So some of the air from the higher pressure side stops the air from the lower pressure side and actually can push it back out, lowering overall flow thru the cooler. The system could be made 50% less complex, and the other side scoop can be used for things like an oil cooler or tranny cooler.

I have not tried this yet, when i get the mold in fibeglass, i will stick my monometer in there and test it. I have driven it with my makeshift duct for over 5k without any issues. I don't know if just one side will be enough...

[bbjones121]

How does the air enter on the side ducts?

I am using the factory five side scoop collectors. They funnel into a 4"

[bbjones121]

I can see the pics now. Are you using the side duct vents from Factory Five?

Yeah i am using their collectors.

[AZPete]

Sgt Gator asked, " . . . normally two intakes to one common plenum don't work as well as a single intake. The reason being that the pressure from both sides has to be equal, which it rarely is. So some of the air from the higher pressure side stops the air from the lower pressure side and actually can push it back out, lowering overall flow thru the cooler. . . "

I think he makes a good point. When I built an intercooler plenum for my 818C, I included partitions inside the plenum so each air intake (4) had its own channel on the intercooler, hence could not compete with any other air duct. Would it be possible in your design to just add a partition to keep the right and left intakes from competing?

[Ajzride]

Ideally one side scoop would feed A2A and the other would feed the fresh air intake. With an in-line fan 1 duct can provide plenty of air.