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-   -   Vented hoods and turbos (https://www.ft86club.com/forums/showthread.php?t=39897)

charged86 09-22-2013 10:17 AM

Quote:

Originally Posted by Supermassive (Post 1195584)
I can actually attest to this...the FR-S generates a ton of underhood pressure. When I was running my CF hood it was extremely noticeable because it would flex the sides of the hood up (near the wheel arches). At 160 there was about a 1-1/2 inch gap between the hood and the wheel arches...I decided to slow down since i didn't want the hood to break. That hood was also vented so it's definitely a science as to where venting should be to alleviate that pressure. I personally think that function fender vents would help substantially...but that would require some serious fabrication to make work well.

A few other people including myself noticed stock hood lift I was accelerating into a head wind on the highway and tha exact spot you mentioned near the high point of the fender started to lift. I only hit 103 or so. And I would have the same issue I would love a vented hood but would hate the rain and snow in my engine bay

King Tut 09-23-2013 10:28 AM

At 100 mph I have more improtant things to look at then how much hood lift there is. :lol:

Anthony 09-25-2013 03:29 AM

Quote:

Originally Posted by King Tut (Post 1228697)
At 100 mph I have more improtant things to look at then how much hood lift there is. :lol:

I concur. Those text messages aren't going to read themselves.

ftc~brz 09-25-2013 04:45 PM

Quote:

Originally Posted by Anthony (Post 1232564)
I concur. Those text messages aren't going to read themselves.

oh but they do read themselves in the brz. Just saying

[ame="http://www.youtube.com/watch?v=z0r2bSm0iOY"]http://www.youtube.com/watch?v=z0r2bSm0iOY[/ame]

charged86 09-25-2013 04:58 PM

Quote:

Originally Posted by King Tut (Post 1228697)
At 100 mph I have more improtant things to look at then how much hood lift there is. :lol:


can you multitask son!!!

Pete156 09-25-2013 10:43 PM

Reading through this thread makes me glad I went with an AVO turbo kit. I don't have to worry about under hood heat because the engineers and designers have kept the heat where it's supposed to be (under the motor not all around it). Vented hood? No thanks, no need.

pmccut 09-25-2013 10:59 PM

Quote:

Originally Posted by Pete156 (Post 1234406)
Reading through this thread makes me glad I went with an AVO turbo kit. I don't have to worry about under hood heat because the engineers and designers have kept the heat where it's supposed to be (under the motor not all around it). Vented hood? No thanks, no need.

lol. :bonk:

ZionsWrath 09-25-2013 11:04 PM

Quote:

Originally Posted by Pete156 (Post 1234406)
Reading through this thread makes me glad I went with an AVO turbo kit. I don't have to worry about under hood heat because the engineers and designers have kept the heat where it's supposed to be (under the motor not all around it). Vented hood? No thanks, no need.

Being in the pacific northwet you probably only drive in rain anyway so probably right, don't need a vented hood

:lol:

Pete156 09-25-2013 11:17 PM

Quote:

Originally Posted by ZionsWrath (Post 1234450)
Being in the pacific northwet you probably only drive in rain anyway so probably right, don't need a vented hood

:lol:

We had 81 straight days without a raindrop this summer, but don't tell anyone.

phloozy 09-25-2013 11:19 PM

Has anyone seen any actual benefit of a vented hood on our cars?

Frs300 09-25-2013 11:28 PM

Quote:

Originally Posted by phloozy (Post 1234477)
Has anyone seen any actual benefit of a vented hood on our cars?

When I get my car back I'm goig to log temps with stock hood then throw on vented hood see what we get..I don't have oil coolee or radiator upgrade so we will see how well it works. Might end up trading hood for oil cooler in the end

nix 09-25-2013 11:51 PM

Quote:

Originally Posted by Pete156 (Post 1234406)
Reading through this thread makes me glad I went with an AVO turbo kit. I don't have to worry about under hood heat because the engineers and designers have kept the heat where it's supposed to be (under the motor not all around it). Vented hood? No thanks, no need.

Do you monitor your temperatures and especially IAT? The AVO kit does add a LOT of heat and a vented hood would do a great job of reducing the heat soak that turbo cars have when they are stationary.

I have heard a lot of mixed reviews on Seibon products don't have a local distributor so it's risky option to me. Don't really want to cut my hood up though!

phloozy 09-25-2013 11:52 PM

Quote:

Originally Posted by Frs300 (Post 1234490)
When I get my car back I'm goig to log temps with stock hood then throw on vented hood see what we get..I don't have oil coolee or radiator upgrade so we will see how well it works. Might end up trading hood for oil cooler in the end

Awesome please report back, this is exactly what I am looking for.

vinh 09-25-2013 11:59 PM

Quote:

Originally Posted by phloozy (Post 1234477)
Has anyone seen any actual benefit of a vented hood on our cars?

aesthetic benefit. looks dope!

Pete156 09-26-2013 12:07 AM

Quote:

Originally Posted by nix (Post 1234535)
Do you monitor your temperatures and especially IAT? The AVO kit does add a LOT of heat and a vented hood would do a great job of reducing the heat soak that turbo cars have when they are stationary.

No oil cooler, stock radiator, no heat issues even during autocross. Might be different if I lived in Miami.

nix 09-26-2013 12:53 AM

Quote:

Originally Posted by Pete156 (Post 1234563)
No oil cooler, stock radiator, no heat issues even during autocross. Might be different if I lived in Miami.

That is a different result than most of us. I saw very high oil temps and even some moderate heat soak when my car was NA.

Doesn't matter if you are high or low mount, make sure to watch their IAT when the car is fully warmed & stationary and oil temps when driving hard or tracking.

Torque app and a bluetooth obd2 dongle are totally worth it.

King Tut 09-26-2013 11:59 AM

Quote:

Originally Posted by Frs300 (Post 1234490)
When I get my car back I'm goig to log temps with stock hood then throw on vented hood see what we get..I don't have oil coolee or radiator upgrade so we will see how well it works. Might end up trading hood for oil cooler in the end

Don't trade it. I will take it. I will give you a new Mishimoto oil cooler in exchange. :D

OICU812 09-26-2013 12:05 PM

Regarding all the talk of air flow under the hood..

Some locals here in the car club recently drilled out their fender side panels, where your 86 pistons are, amazing how much air can come through on those sections, sitting comes out like a hair dryer no joke.. Something to consider anyhow. :)

olorin 09-26-2013 12:37 PM

Is it temperature or pressure that is the concern? If pressure it would seem opening up the side fenders (as folks have mentioned) would be a great way to go.

Frs300 09-26-2013 03:15 PM

Quote:

Originally Posted by King Tut (Post 1235285)
Don't trade it. I will take it. I will give you a new Mishimoto oil cooler in exchange. :D


word let me log some temps first see how well it does and if it dont work out and you really want to trade i will

Frs300 09-26-2013 03:16 PM

Quote:

Originally Posted by OICU812 (Post 1235297)
Regarding all the talk of air flow under the hood..

Some locals here in the car club recently drilled out their fender side panels, where your 86 pistons are, amazing how much air can come through on those sections, sitting comes out like a hair dryer no joke.. Something to consider anyhow. :)

got pictures of what they did exactly?

niceguy21 09-26-2013 04:46 PM

Quote:

Originally Posted by Supermassive (Post 1195584)
I can actually attest to this...the FR-S generates a ton of underhood pressure. When I was running my CF hood it was extremely noticeable because it would flex the sides of the hood up (near the wheel arches). At 160 there was about a 1-1/2 inch gap between the hood and the wheel arches...I decided to slow down since i didn't want the hood to break. That hood was also vented so it's definitely a science as to where venting should be to alleviate that pressure. I personally think that function fender vents would help substantially...but that would require some serious fabrication to make work well.

I agree with most of you guys as well, as for me I manufacturer carbon fiber products such as hoods.I myself have a carbon fiber hood on my FRS and there is a great amount of pressure build from within and under the hood, since the hood is a light yet solid piece, it generates a lot more flex than the alumuniun OEM hood, since pressure is being pushed from underneath the hood and from air resistance pressure being excerted from the outside of the hood. As for the OEM hood there also some flex being excerted yet you can't notice since its painted and the fact that alumunium retains it rigidity shape better than carbon.

Sent from my SPH-L710 using Tapatalk 4

Frostyman 09-26-2013 05:59 PM

Quote:

Originally Posted by Frs300 (Post 1235801)
got pictures of what they did exactly?

From :http://www.ft86club.com/forums/showthread.php?p=870191
http://i692.photobucket.com/albums/v...0_165340-1.jpg

SmsAlSuwaidi 09-26-2013 06:19 PM

:barf: might be functional but damn that aint pretty

pheoxs 09-26-2013 06:22 PM

Quote:

Originally Posted by SmsAlSuwaidi (Post 1236224)
:barf: might be functional but damn that aint pretty

That's just the inside you still put the cover back over it with holes drilled or cut out the mesh on the brz inserts

SmsAlSuwaidi 09-26-2013 06:58 PM

Quote:

Originally Posted by pheoxs (Post 1236228)
That's just the inside you still put the cover back over it with holes drilled or cut out the mesh on the brz inserts

Ohh alright now I see, adding a mesh might actually make it look way better. I thought they were driving around with huge cut side panels

Ethan 09-26-2013 07:11 PM

Quote:

Originally Posted by SmsAlSuwaidi (Post 1236284)
Ohh alright now I see, adding a mesh might actually make it look way better. I thought they were driving around with huge cut side panels

There is a thread on this and a mesh part you can buy through Rally Sport Direct. See: http://www.ft86club.com/forums/showthread.php?t=33462. I was ready to do this because: (i) I hate have a fake vent on my BRZ, and (ii) extra cooling would be nice.

I held off, however, for a couple of reasons. If you pop the hood, you'll notice that the hood hinges are right in the area where the vent would go. So, I have a hard time believing that a ton of air could flow through that spot. Also, I was concerned that rain would get in and then get stuck inside the quarter panel. Any thoughts on those issues?

Frs300 09-26-2013 07:43 PM

inserts are way over priced for plastic

mike the snake 09-26-2013 10:31 PM

I'm thinking that some metal screen formed to fit perfectly into the recess would look pretty good too.

Anthony 09-26-2013 11:41 PM

Quote:

Originally Posted by OICU812 (Post 1235297)
Some locals here in the car club recently drilled out their fender side panels, where your 86 pistons are, amazing how much air can come through on those sections, sitting comes out like a hair dryer no joke.. Something to consider anyhow. :)

http://forum.unity3d.com/attachment....1&d=1377691686

I did not know about this. I'm considering un-thanking your post so I can thank it a second time. I can't see any of the pictures or videos in the related links yet, but I'm looking forward to looking into it later. The thought of hood lift has really been breaking my balls lately.

Gen 09-26-2013 11:58 PM

Quote:

Originally Posted by Ethan (Post 1236304)
There is a thread on this and a mesh part you can buy through Rally Sport Direct. See: http://www.ft86club.com/forums/showthread.php?t=33462. I was ready to do this because: (i) I hate have a fake vent on my BRZ, and (ii) extra cooling would be nice.

I held off, however, for a couple of reasons. If you pop the hood, you'll notice that the hood hinges are right in the area where the vent would go. So, I have a hard time believing that a ton of air could flow through that spot. Also, I was concerned that rain would get in and then get stuck inside the quarter panel. Any thoughts on those issues?

You'd be quite surprised how much heat is released with those vents. After a hard drive, it will burn your hand if you hold it there too long.

Ethan 09-27-2013 11:04 AM

Back to the original question of this post, I have been lusting over the Seibon TS hood. Anyone have experience with it.

Anthony 09-27-2013 01:59 PM

Quote:

Originally Posted by ftc~brz (Post 1233697)
oh but they do read themselves in the brz. Just saying

http://www.youtube.com/watch?v=z0r2bSm0iOY

Weeeeellllllllllllllllllllllllll... technically that's the car reading the message. Not the message reading itself. I still stand by my conviction.

Is that your car?

ftc~brz 09-27-2013 02:09 PM

Quote:

Originally Posted by Anthony (Post 1237833)
Weeeeellllllllllllllllllllllllll... technically that's the car reading the message. Not the message reading itself. I still stand by my conviction.

Is that your car?

true…

yes it's mine.

the last 2 times I have had frs owners in my car when I have received a message it's been my hubs sending me his standard "I love you" txt. So both times it's been witnessed my car has told me it loves me lol

Anthony 09-27-2013 02:24 PM

Haha nice. That was my first time hearing crickets. Was that your car making the sound? If so, I'm surprised that it sounds exactly like crickets.

ftc~brz 09-27-2013 02:33 PM

Quote:

Originally Posted by Anthony (Post 1237882)
Haha nice. That was my first time hearing crickets. Was that your car making the sound? If so, I'm surprised that it sounds exactly like crickets.

no, that was actual crickets the car wasn't running, but the "crickets" do sound just like that.

Ethan 09-27-2013 10:33 PM

On the possibility of replacing the fake fender vents with real fender vents, I spoke with a body shop today and thought I should share a few points. First, I asked about using the stock plastic pieces on the BRZ cutting out the fake part and replacing with mesh. The problem with that approach is that would be cutting out four of the six plastic clips that secure it to the car. The Prova part only uses to fasteners, but it looks like they are metal screws. So, while the Prova parts are expensive ($399), it would be more secure than using the stock piece with only two plastic clips. The second issue to consider is getting rain inside the fender. The body shop recommended pulling the fender off, drilling any necessary holes at the bottom to let water out (and which wouldn't be visible after the fender is back on), and then spraying the inside to prevent rust. I am very tempted to do it.

phloozy 10-10-2013 01:06 PM

any updates on people with vents?

JustBoostin 10-10-2013 03:39 PM

I cut stock brz vents for mine. And only left one clip. I put double sided foam tape around the edges and it holds flawlessly, and releases a ton of hot air. I'll update my post later with pictures!

*EDIT*
http://i1136.photobucket.com/albums/...psd15f4b09.jpg
http://i1136.photobucket.com/albums/...ps362e0420.jpg
http://i1136.photobucket.com/albums/...ps6f41e521.jpg

1slowbrz 10-10-2013 11:09 PM

^Want!


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