For Sale: Fiberglass Side Scoops

[tmoretta]

Some kind of measure of increase in air volume/flow.

[Kurk818]

I've purchased this anemometer to conduct some testing of air flow just inside the scoop area with and without the scoops.

https://imgur.com/4hiC0Zf

Bad/good idea? Input on where to mount?

[tmoretta]

Great idea! I am anxious to see results. Don't know about where to mount, I guess back side of FFR scoop.

[DMC7492]

Kirk great idea, testing at several different speeds,ex 10,30,45,65 MPH. I am more interested at lower speeds such as city driving in an 818S.
I noticed while carting at 30-45 MPH going with the wind. The cooling fans would kick on this is the only time they ran. Leads me to believe the engine compartment must also be getting hot during this condition.

[Canadian818]

Good stuff! It will no doubt validate your work and help you sell more.

[FFRSpec72]

Then compare to the factory vent to get a base line

[Kurk818]

I plan on performing a test with and without the scoops at set speed increments and provide a spreadsheet of the results. The gauge is able to show Cubic Feet /Minute results which i think will be the biggest indicator of functionality.

[DMC7492]

Kirk how is the scoop functionality tests going?

[Kurk818]

I've been working 70+ hours a week lately. I definitely think about needing to do it lately. Need to find a passenger to take notes safely as well.

I definitely haven't forgot though.

[RetroRacing]

We need a set asap, who do I need do to get a set?

[Kurk818]

(8/29 EDIT - See Post #65 below for more accurate data)


I was finally able to perform some testing of CFM air flow with and without the scoops. My cut out was larger than most so craft paper was used to cover and funnel the air flow. See photos.

Graph shows air speed in CFM as it relates to vehicle speed (Labeling is wrong on the X,Y axis). Since air flow fluctuates a little with speed, the average CFM was taken for each speed.

I just noticed from the photos as i was writing this post that the test with the scoops did not have direct flow towards the meter (as you can see in the photo). I think this may have caused some turbulence and will have to correct the issue and retest at some point soon.

I also posted a photo of my intercooler temps just outside my turbo and just prior to entering the throttle body. They stayed pretty constant at a little over 100*F with ambient temp at 95ish degrees.

[Kurk818]

We need a set asap, who do I need do to get a set?

Lol PM sent

[FFRSpec72]

So I wonder what the external scoops would be like with the internal scoops I have now, as that combo should be awesome for a TMIC

[Kurk818]

Tony, i was wondering that same exact thing. I may have to make an inner scoop/duct setup for 4" and 6" ducting. There is definitely some air volume there that can be of great use for our application.

Do you know if FFR intends to sell their inner scoops as an option?

[FFRSpec72]

Tony, i was wondering that same exact thing. I may have to make an inner scoop/duct setup for 4" and 6" ducting. There is definitely some air volume there that can be of great use for our application.

Do you know if FFR intends to sell their inner scoops as an option?

I think it will depend on the feedback that they get on the scoops, so I may be interested in getting a set of yours if they will still mount since I have the internal scoops

[Kurk818]

I think it will depend on the feedback that they get on the scoops, so I may be interested in getting a set of yours if they will still mount since I have the internal scoops

The front mounting points will mount without issue. Looks like the 2 rear mounting points will need to be installed through the Ffr piece. Your original edge body line is in tact. You won't be able to tell you have the inner scoop when the outer scoop is installed

[DMC7492]

I like the results. Was CFM based on the square inches of the scoop inlet area or the area of the little fan?

[Frank818]

Captain, what does it mean a speed of 5000? 5000mph? lolll 5000in/h?
I'm trying to determine the speed cut point at which the scoops give more CFM than without (1100 on the pic).

[Kurk818]

I like the results. Was CFM based on the square inches of the scoop inlet area or the area of the little fan?

Cfm was based on the area of the fan.

[Kurk818]

Captain, what does it mean a speed of 5000? 5000mph? lolll 5000in/h?
I'm trying to determine the speed cut point at which the scoops give more CFM than without (1100 on the pic).

Lol. I noted in the posted that the X,Y axis labels were swapped.

25mph is the last time the cfm readings are close.

[DMC7492]

Cfm was based on the area of the fan.

Great let's say I'm not an aeronautical engineer, if the results were multiplied by the area of the inlet, like three or four times and the graph paper was removed, is it safe to say the air flow would be 9000-12000 CFM at 60 MPH? I'm curios because your basically choking the outlet to the size of the fan. Knowing the velocity will be higher but also at a higher pressure against the fan. Without this restriction I believe the duct will flow a greater amount.
Can any engineers out there confirm my suspicion?

[Kurk818]

Great let's say I'm not an aeronautical engineer, if the results were multiplied by the area of the inlet, like three or four times and the graph paper was removed, is it safe to say the air flow would be 9000-12000 CFM at 60 MPH? I'm curios because your basically choking the outlet to the size of the fan. Knowing the velocity will be higher but also at a higher pressure against the fan. Without this restriction I believe the duct will flow a greater amount.
Can any engineers out there confirm my suspicion?

That was my original theory and reasoning for having such a large cutout behind the scoop. Better utilization of the volume of air that makes it into the scoop will definitely be helped by an inner scoop. (Which will be built in the future)

[Kurk818]

Would air speed be a better indicator rather than cfm? Then multiple by area of inlet to get cfm.

[DMC7492]

The area of the duct can be entered in the meter, and saved. the fan could be mounted in the opening of the scoop and then entering the square inches of the scoop in the meter. The read out would be CFM going through the scoop. This along with the craft paper removed my get the best results.

[Kurk818]

So i need to clarify some of the data that i posted. While trying to provide data sooner than later, i did not fully understand the Anemometer and air flow as it relates to this test. The meter had a preset area of 160 in^2 (1.11 SF), of which all of the data that i posted in the previous post reflects.

Below is a table showing the data based on actual surface area of the opening for the scoop as well as 3" and 4" duct opening (which is what an inner scoop would more than likely have. The X axis would be the MPH and the Y axis being the CFM. Ive attached the data used for the graph to show more data points.

[Kurk818]

One more set available. Will be focused on building my shop for the winter.

[07FIREBLADE]

Is it a white or black set? Any update on making a CF set of just doing an overlay like what you did?

[Kurk818]

Is it a white or black set? Any update on making a CF set of just doing an overlay like what you did?

White set available.

I dont plan on making any parts for a while. C.F. overlay set will be installed on my car at some point this winter.

[Kurk818]

Ive had some recent interest in more scoops, which plays in nicely with my current schedule, to produce a few sets of scoops. I wanted to get a tally of who and what was needed. You can PM me or post within the thread Thanks

[SixStar]

Interested

[Kurk818]

Update in post #1

[Dave 53]

It's been a few years since any chatter about your scoops. Can I talk you into going back into production?

[blomb11]

I would be interested in a pair as well!

[Hojo]

Right price, me too

[tgf05354]

I'm in for a set

[Kurk818]

Thanks for the interest guys.

I need to dust off the mold and get them made.

I will keep you posted.

[Kurk818]

Can those that want a pair let me know if they want want or black scoops. Need to know how much of what color gelcoat to get.

PM preferred.

[tgf05354]

Can you match the red gelcoat from FFR, if not, Black for me. Do you need any other information?

[Kurk818]

Looks like prices have pretty much doubled for the raw materials here in Seattle since 2015. New price is $400 + shipping and I'll leave the final fit up and epoxying of mounting studs to the purchaser.

[Kurk818]

Can you match the red gelcoat from FFR, if not, Black for me. Do you need any other information?

I do not have the red gelcoat to match to unfortunately and in my opinion a shade off would not look good.