vented BRZ fender trim?!
 

Hi guys I am thinking to start making the BRZ fender trim fake vents to real ones and start selling them is anyone interested in buying them ?

Attachment 171459

If I start selling them the kit will include .
1- FRP unpainted vent trim right and left .
2- template for the cut line on the actual fender .
3- 3M .

let me see your thoughts :popcorn:
:cheers:

https://www.ft86club.com/forums/showthread.php?t=70815


Also..
https://www.nengun.com/prova/fender-vent-emblem


But if you can offer it for cheaper I think you may have a business on your hands.

Will try my best to get the lowest price the higher the demand on this part the lower i can get the price:thumbup:

bump

If you want to be a vendor or sell a service then you should contact the mods so you don’t get banned for possibly violating the forum rules.

Offering a DIY kit that includes the vent mesh, adhesive, and cutting template with instructions for less than 60.00 might capture a nice market.

I absolutely love my GT mesh from customcargrills.com.

The amount of heat that pours out of these small vents will surprise you too. Would definitely consider these a smart option if boosted.

http://i.imgur.com/iCkbayB.jpg
http://i.imgur.com/rySCR2z.jpg

Still doing this?

Sent from my SM-N960U using Tapatalk

I was looking at my 16 BRZ, seems like I would need to cut metal to vent through the fender garnish. I am wondering about cutting some metal out in between the clips and then trying to slot or putt small pin holes in the black area of the garnish. If it looks like crap then I have to cut more out and put in some grill material. What do you think? Crazy, stupid, not worth it for minimal heat loss?

Seen this?


https://www.ft86club.com/forums/showthread.php?t=70815

Thanks. I’ll wait to see if someone tests that it actually lowers the temps. Not sure I am ready to cut it up yet, but thinking about it.

I'm making these. I'm gonna see about putting some kind of thermometer in the hood near the area and do a before and after. Not sure if someone has a suggestion of a more scientific way lol

Sent from my SM-G960U using Tapatalk

My temp probe is not long enough, but it would be best to take temp measurements at different places in the engine bay. Before and after.

I’m interested in the mesh kit!

Interested as well, though in less apt to be cutting the metal behind it unless the cooling benefits are significant

It does, there is barely a slot 1/8” wide without cutting.

I bought used fender garnish to experiment with. I would love to just slot the stock black trim and cut the back out first. Worse case if it does not look good I can cut it out and put in a new grill. Then I need to match the cuts on the fender. Once I get it, I will start some planning. Any ideas or input?

I'm a little concerned opening this up at all will necessitate adding something stronger than 3M tape to hold it on given it's going to be dealing with air pushing out. Love the idea of making them any kind of functional though as fake vents are a real pet peeve of mine.

Totally agree. At a first quick look, I would just be looking to remove fender material in between the clip mounting points. Then the tape is added as a secondary. I am going to focus on the garnishes first and what I will do to them. Once I have that idea, I can see how the holes I have made can match up with the fender.

Maybe using something similar to a brake duct to direct air to the vents so as to provide better cooling an potentially alleviate the pressure against the 'body' of the garnish

Air isn't being "pushed out", it's a low pressure region, so technically sucked out. It'll see way less force than a spoiler and that is able to withstand adhesion with just adhesive tape. I wouldn't overthink it. Just make sure the surface is prepped properly and the tape is of good quality.

I'm not an aero expert, but at interstate and above speeds wouldn't it become pressurized? The intent is to vent from the engine compartment correct? On a stock car, there is significant pressure in the engine bay that causes the hood to deflect upward at higher speeds.

This is exactly what I was thinking, as everytime i'm on the highway I get uneasy when I see the hood floating up a tiny bit

Yes it's "pressurized" but it's not as simple as that. The vents will provide some release but it won't fully release the high pressure zone through the side vents the same way hood vents will. Also speaking of hood vents threes a reason they need to be in a particular area in the car to maintain effectiveness. They need to vent in a low pressure region otherwise they would intake vs exhaust. Wicker bills also aid in creating a larger low pressure region to increase their effectiveness. The fender vents will only flow whatever the low pressure region around it will support.

The stock hood is just flimsy aluminum, you're talking about a larger surface area for the pressures to act on. Hence the death rattle.

I've been following this thread because functional vents would be baller, of course BUT

I had no idea the hood shaking at highway speeds had a name. I've noticed that over the last 1.5 months ownership and I've thought that maybe the play in the hinge or something needs to be adjusted LOL.

Death Rattle.

My concern is to do this correct, because years ago on the NAsioc forum, I remember someone doing similar things to reduce under hood temps. One finding was that it effectEd the flow over the radiator negatively which is something you don’t want to do unless it’s more flow. I can’t remember what the modification was. I will do some searching of the internet. My feeling is holes in the right place is good, holes in the wrong place is neutral to bad. I don’t want to do this much modification for a DD just because Racecar.

I think it's best not to overthink this, it's going to help but don't expect jet streams of hot air to shoot out of these vents or a drastic reduction of under hood pressure/temps. You won't see that without large venting.

I did this 2 years ago. Hot air POURS out of them when the engine fans are running. at speed it must be even more.

3M tape is holding them on just fine. Keep in mind that venting the pressure reduces the force imparted on the trim piece.

Did you cut out any additional metal from the inner fenders?

Yea, roughly this much:

https://uploads.tapatalk-cdn.com/202...15312e74c0.jpg

I didn’t cut under the slot cause there’s a chassis beam behind it anyway, not much air coming from that.

Do you think the extra cutting makes a difference? Or would the air still stream through without it being cut? Maybe the smaller exit would create a vacuum?

Yes the cutting makes all the difference. A smaller exit will not create a vacuum, just less flow.

I will likely do what you did, but keep the clip parts and cut in between.

So I got the fender garnishes. I am cutting out the spots between the clips from behind, but not the black trim part. Just the backing behind it. After that I am drilling multiple holes along the angle lines of the black trim part. Not sure it will be enough open space , but I want to go subtle first before I go big and cut it all out.

Pictures of your progress would be appreciated!

Would drilling a bunch of holes so it's essentially a perforated fender area allow the heat to be reduced and retain the factory clip locations without ruining the cooling abilities of the rest of the cooling system?

I think you'd need multiple temperature probes in a few different locations around the engine bay and a few test drives or a huge dyno styled fan to test all of this....

also would require airflow sensors to determine if it's helping or hurting aerodynamics as well.

Here is what did. Still have stock ones in case, but went for a drive. When I parked the car in the garage the heat is pouring out of the fender garnish. Have no idea if it works at speed. It’s good for now, not perfect but I like it. All clips were used and new 3m tape. Let me know what you think.



https://imgur.com/rm7dJoZ

https://imgur.com/MTotgde

Garnish vents
 

I trimmed down cast aluminum registers to make my garnish vents. This allowed a large openings in the fenders to let air out of the engine compartment.

Nice job, but I would get more of a grill with smaller holes. I think it will look better and still allow plenty of air flow.

Holes from a distance
 

I'm sure there is a better option out there but these were less than $20 each.