DIY: Hood Ventilation Mod
#103
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.
Last edited by musclecarconvrt; 08-23-2007 at 09:49 PM.
#104
Future Rotary User
Join Date: Oct 2006
Location: Chicago, IL
Posts: 567
Likes: 0
Received 0 Likes
on
0 Posts
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?
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?
#109
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.
Note- I also have the mazsport fan mod, use Redline water wetter, & use distilled water.
Last edited by sosonic; 08-24-2007 at 11:43 PM.
#110
I don't buy Kool-Aid
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.
Looks cool. Like you dont know its there unless I point it out.
Anything helps when it comes to that heat under that hood.
#111
Hmmmmmm.........
Join Date: Mar 2005
Location: Melbourne, Australia
Posts: 3,564
Likes: 0
Received 6 Likes
on
4 Posts
Just came across this. http://www.arc-parts.com/ you could try sticking it all over your hood
#116
Registered
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.
FWIW, after I park my car I can definitely feel the hot air seeping out from under the hood now.
#117
Boosted Kiwi
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
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
#122
Boosted Kiwi
iTrader: (2)
https://www.rx8club.com/showpost.php...54&postcount=8
be interesting to see if it works on you car bret.
beers
be interesting to see if it works on you car bret.
beers
#125
JunpoweR ?
Join Date: May 2007
Location: Bay Area Cali- Oakland 510
Posts: 14
Likes: 0
Received 0 Likes
on
0 Posts
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
Last edited by JunpoweR; 11-08-2007 at 07:47 AM.