expo1

Yes, about 3 rubber washers under the bumper.

olddragger

iTrader: (3)

try elavator bolts from lowes/home depo they are perfect and you dont have to worry about glue
olddragger

musclecarconvrt

This works. It's been over 100 almost every day for the last two weeks here in TN and with the hood gap, TB heater/coolant line bypass, and pre-mix together gave me some relief. I even fabbed up some aluminum heat syncs for the coils. Before, I was getting a terrible hesitation and off idle stutter at anything over 90 in traffic or after long cruises. Now it run smooth even over 100. We hit 107 the other day ! Still smooth.

lone_wolf025

I'm gonna ask a dumb question here so please don't flame.

I noticed that the hood has a liner. I assume its a good idea to keep that liner in, and that removing it would not have an effect on temps?

I ask because I have known of people (like myself on a previous car) removing the liner for aesthetics and to make it sound better. I'm guessing though that it might not be a good idea due to all the heat produced by the engine, making a warped hood possible?

musclecarconvrt

Fair question.
I don't think removing it will do anything more than let more sound out of the engine bay.

MazdaManiac

iTrader: (3)

And let the heat of the engine compartment work directly on the aluminum hood and its painted surfaces.

paulmasoner

iTrader: (1)

.

MazdaManiac

iTrader: (3)

Hey, I know that picture!

sosonic

I ran my car hard at over 100+ mph. You guys that have not tried this simple hood mod can doubt all you want, but I'm convinced it works. My scanguage is showing lower temps and the car was more responsive than it has been. The effect is like when you run your RX-8 in cooler weather. What many of us have noticed is that the RX-8 likes cool weather. It also likes to be cooler in the summer too, so if you can make that happen, you get rewarder with a more responsive car.

Note- I also have the mazsport fan mod, use Redline water wetter, & use distilled water.

DOMINION

I did this mod when I did the DIY coolent by pass one mod, and this helped out a lot on keeping my car cool. That or the 2 helped. Any way I went to homedepot and got some rubber deals that you put under furnituer so it dont move. Then I used some boults and screws to hold them in place that I got at homedepot too.
Looks cool. Like you dont know its there unless I point it out.
Anything helps when it comes to that heat under that hood.

auzoom

Just came across this. http://www.arc-parts.com/ you could try sticking it all over your hood

DOMINION

Dam I'm going to get me some lol

Brettus

iTrader: (2)

just did the mod . started with 14mm packers but felt there was too much tension on the hood hinges so took them down to 13mm which still puts the hinges under tension but does not feel excessive .

DOMINION

You can adjust your hood if the ends by the windsheld are up. Mine where till I adjusted the hood.

lepichichi

iTrader: (10)

i did mines yesterday, pretty good and simple idea, keep up the good work!!!!

peterlemonjello

I did mine this past weekend. I used the expo1 method. So far I think I can tell a difference. It hasn't been as hot this week but it's still over 90 with high humidity. I wish I could've tested this back when it was 105 with 100% humidity.

FWIW, after I park my car I can definitely feel the hot air seeping out from under the hood now.

Brettus

iTrader: (2)

Hate to throw cold water on this idea but .......
I had it for several weeks and got sick of the freash air coming into the cabin being heated . I know you can switch it back to recirculate but it keeps defaulting back to freash which I found to be a big PITA .
What I've done now is a compromise - the RH third is opened up but left the rubber strip on the LHS where the ventilation system picks up it's air from .
I was not having overheating issues anyway so I'm happy with this setup

rotorocks

Strange,
My car never switches back from recirc. to normal. It always stays the way i left it before the shut off.

Brettus

iTrader: (2)

think it's whenever turn the A/C on that it defaults to freash - will check

MazdaManiac

iTrader: (3)

There is a re-programming procedure for that which you can employ yourself.

swoope

iTrader: (5)

https://www.rx8club.com/showpost.php...54&postcount=8

be interesting to see if it works on you car bret.

beers

Brettus

iTrader: (2)

mine is a 2003 model so it is not programable - thanks for finding that though

Madhops

This is definitely a mod I'd try. Love the cheap easy ones! Do you guys think that this mod would work better if the plastic engine cover was off?

DOMINION

^I run with out it. IMO let the heat out! But thats just me.

JunpoweR

Very true you will get hot air from the engine bay so this makes me believe air always leaves the engine bay at all speeds because I have my vents on cold in the SF mornings and i do get up to 70mph and feel hot air with the slight smell of engine oil in the interior.If the air at any time entered the engine bay through the cowl then you would not get hot air from the vents.

Here is a pic of the ones I made for the FC then and yes it lifted on the sides also so it dosen't look very sleek but did the job.


If everyone remembers back in 2003 I posted and sold hood lifts for the FC3S on the RX7 forums and eBay.
I stopped making them for fc's but I did make them because the hood on my turbo II would start lifting on itself while I was going over 130mph+. There was enough pressure from the engine bay and the hood scoop to lift/flex the aluminum hood at high speeds.
Also this mod did have noticable cooling effects at buttonwillow.
I got really hated on about this mod but believe it does work.Well I like to think so now.
So many haters out there actually got me to start thinking about testing it.I will be buying a wired thermo probe and sensors to test my 90 GTUs at button willow the day after thanksgiving again.
With and without the hood lifts.I will also use something to trace the air around the cowl section of my car.

Below is my old posting on the RX7Club about my hood lifts,
Enjoy and feel free to revive the posting.Look at all the flaming i got for it back then! Atleast the RX8 members seem a bit more civilized for the most part.I just hate *** holes.

http://www.rx7club.com/showthread.ph...ght=hood+lifts