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extraction hood

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Old 12-20-2007, 12:33 AM
  #261  
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Try that one on for size!
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Old 12-20-2007, 12:35 AM
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I like this hood a lot, wish I would've grabbed a closer shot of it. Looked pretty good.. just had to be careful where you parked the car cause you could steal the BOV through the openings.. lol
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Old 12-20-2007, 09:48 AM
  #263  
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Originally Posted by Braineack
...much easier to mold in vs the ebay one.
the biggest issue is the center spine and whether it will intersect the perimeter of the miata hood bump

this one would fit for sure... but it's not as pretty and has smaller holes

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Old 12-20-2007, 09:55 AM
  #264  
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exactly, it's not pretty. I'm considering just cutting the hood and making my own. I dunno yet. I'm still pondering, but I'd like to do something over this holiday.


I think I'm going to cheap out, just get a can on bondo and do something like this, in the same area I've posted about above.

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Old 12-20-2007, 10:31 AM
  #265  
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the nice thing about those vents is there not so flamboyant

though if you're going to diy, why not go all out? now that's extraction
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Old 12-20-2007, 10:48 AM
  #266  
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Originally Posted by Braineack
exactly, it's not pretty. I'm considering just cutting the hood and making my own. I dunno yet. I'm still pondering, but I'd like to do something over this holiday.


I think I'm going to cheap out, just get a can on bondo and do something like this, in the same area I've posted about above.

I know a guy locally who can weld aluminum, I may just have to make the cuts then go to him and have him weld in some side pieces.
Any measurements on where to place those vents?
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Old 12-20-2007, 11:03 AM
  #267  
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Originally Posted by m2cupcar
the nice thing about those vents is there not so flamboyant

though if you're going to diy, why not go all out? now that's extraction
Heh, thats how mine should sorta be whenever I bother to finish it
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Old 12-20-2007, 11:18 AM
  #268  
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I'm not going to weld. I have a ton of sheet aluminum that I'll make walls with and rivet, then I'll make something for the air foil and then smooth it all down with body filler.

I suspect it will look something like this:



that's being optimistic if I can cut that well....however, with an air nibbler, it should look fairly clean.
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Old 12-20-2007, 11:21 AM
  #269  
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Why not just do one big one? Less work...
Obviously mine isn't bent 100% yet or side ducted... but visually you get the idea.

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Old 12-20-2007, 11:24 AM
  #270  
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Air foil?
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Old 12-20-2007, 11:31 AM
  #271  
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Originally Posted by levnubhin
Air foil?
I'm fairly certain he is talking about adding a lip to the front of the ducts to create an aero affect and lower the pressure zone even more in that location, thus increasing its effectiveness.

Thats on my list too... jebus.. what isn't at this point... sigh.
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Old 12-20-2007, 11:32 AM
  #272  
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I'm fairly certain he is talking about adding a lip to the front of the ducts to create an aero affect and lower the pressure zone even more in that location, thus increasing its effectiveness.
exactly.

split, perfect. i forgot you did that. that's exactly what i'll do. what did you cut it with?
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Old 12-20-2007, 11:35 AM
  #273  
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I agree- a single hole, no divide. I may just do the same. Could've done it already given all the time wasted looking at ready made extractors. I think I'll resort to some kind of black treatment too- something to disguise/detract from the hole, because I know it's going to be ugly on the first round.

dott- you need to trim the bottom line of your bumper hole to match the OE recessed contour line so it doesn't look bowed up from the front. And you'll get more air. I know you're always looking for ways to make your car prettier.
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Old 12-20-2007, 11:58 AM
  #274  
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I kinda like the way Brain photoshopped his. Almost looks like it was supposed to be there.
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Old 12-20-2007, 12:02 PM
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Now is there anything that can be done to extract heat from the turbo area?
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Old 12-20-2007, 12:09 PM
  #276  
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Originally Posted by Braineack
exactly.

split, perfect. i forgot you did that. that's exactly what i'll do. what did you cut it with?
I marked it then went to town with a dremel cutoff wheel, fiber reinforced one.

M2... yah, it is a show car after all.. I should clean the cut up . I may get to it, but I already put door trim onto the opening to make it all purty... so I might be too lazy to recut then retrim
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Old 12-20-2007, 12:12 PM
  #277  
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my god im not reading through all pages of this... but did anyone else think of something like the TRD3000GT hood??

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Old 12-20-2007, 12:15 PM
  #278  
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looks like where ever the bracing behind the hood had an opening it was cut. the problem there is the lack of airflow. my goal is to extract as much flow from the radiator as possible. without the holes having any sort means to route the air up through them, they probably only function well at idle. otherwise at speed, the airflow over the top of them will prevent any air to actually escape.
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Old 12-20-2007, 12:43 PM
  #279  
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I like the pad lock on the hood...lol.
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Old 12-20-2007, 06:28 PM
  #280  
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here's my final decision.



i plan the cut out a rectangle and literally build this separately from the hood & fiberglass solid, then laying down on top, rivet, smooth with body filler, and paint.
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