airvents on the hood
 

im going to be redoing my 7 over this coming winter
and i would like to add hood vents but i dont know how to

ive looked for guides and i got nothing still
so somebody out there, could you please tell me how to add
hood vents that are actually functional
do you just get the hood pressed?
new hood?
cut a hole that is the vent shape and slide them in and
fasten them somehow?

any help would be great thank you

http://www.ebay.ca/itm/1-Pair-Straig...item2a146e3fab

In case that link doesn't work, just search "hood louver" on eBay. There's all kinds available, you just need to look around.

I've got two sets of those and plan to put 3 on the hood with the leading edge about where the rad sits. Just going to get my hands on a spare hood and cut the holes out, put some sealant around the mating surface and then rivet them in place. Probably cut the 4th in half and put each half on each side of the hood behind the headlights. The main reason I want them is to reduce front end lift at higher speeds, but also to vent hot air when autocrossing. You could also just cut straight holes in your hood and then bend the metal up to form a lip. There are a million different options, you just have to get creative. You could have them pressed in, but I couldn't begin to tell you where to get that done.

ah so most people just cut the holes out then seal the vents in place then?

Yup. Hyperformance2k just used a wall vent for a house and riveted or bolted it in place. I have a pair and was going to follow his lead but found these louvers and went with them instead. You could also use epoxy or other bonding agent instead of bolts/screws/rivets.

i put on mine a 300zx hood scoop

i just love your car hand down.....its definatly the coolest one ive seen and ill be repainting mine white and trying to get something like those rims cause i love your rims...

i think then its time to get a spare hood and start crackin at that...

just out of curiousity how strong of a bond do you get with epozy/bondin agents..
cause i dont want anything flyin off on the highway like my front mazda emblem :scratch:

thanks!!!!! the 300zx hood scoop is bolted down no epozy at all.

what about doing a hood vent like the tornado silver rx7 that i have for my avatar??

You can use fiberglass and resin to mate the vent piece with the hood. You just have to take the hood down to bare metal and prep the surface. I did my hoodscoop the same way. Used bondo and glazing putty to smooth it out:

https://www.rx7club.com/attachment.p...1&d=1317613089

Love the "Eyes" and "Fangs" on it.

https://www.rx7club.com/picture.php?...ictureid=30972

That would be fairly easy. You would need to cut the shape of the vent out in a sort of square U shape, then push that metal down a bit and add metal to each side to give it strength, then lift the front edge up to create a lip so you get the low pressure area to draw air out..... or is it high pressure? I always get those mixed up. Either way it creates a pressure differential (that's what we'll go with) that forces air to be sucked through the vent. You just have to watch how big you make it and where you place it in relation to what's under the hood. Too low or too far back and you'll end up hitting engine parts. Too far forward and it won't pull the hot air from the rad. Measure twice, cut once applies here. Hell, measure 4 times. You only get one shot per hood. Crappy MS Paint diagram included.

I'm planning on basically copying this car's hood. I'm not sure whose it is, but I think it belongs to a member here.

https://www.rx7club.com/attachment.p...1&d=1317669519

I want that airdam, too.

thanks you have no idea how much that helps me

yea i know that venting on the hood is killer sweet plus it provides really good cooling

Thanks! It was a Halloween autocross. My car went as Count Wankula.

That vent looks really good, and I bet it's very effective. It's harder than it looks though... if you look on the underside the hood, you'll notice there is a lot of support structure in there that will need to be cut. It's still doable though, just complicates things a little. And I bet it was really hard to get the hood to roll down so smooth. He did a good job. I wonder if he added any extra reinforcement after he cut it?

lol count wankula you sir have made my whole week!

yep thats very funny....
that made my week also

I remember the guys at Mariah Motorsports offering a 2nd gen turbo hood intake that could be glassed in a be fully functional.
Not a bolt-on but it looked really cool. I wish I went for it...