Wednesday, July 30, 2008

Hood Vent Mod

When it comes to cars and performance every degree cooler your engine runs can be critical. Or at least carnuts obsess over it like it is ;) The Pontiac G8 has some hood-scoops that most people either love or hate ( I like 'm !). The only problem is - they're NOT really functional. Once taken apart you can see that they're actually first blocked off by a piece of plastic with 3 tiny holes in it, afterwhich there's a big rubber piece in the hood.

Now i'm sure 'some' air gets in/out (there's still some debate whether the vents are in a low-pressure zone and whether or not they let cold air in, or let hot air out but that's an side)
but it's just not very efficient as you can imagine. Some members over on g8board have come up with several modifications to help out with this problem and here's the most elegant one that I did myself (well ALMOST.. ) provided in detail to you by SRG963
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With this mod, you should avoid parking uphill in the rain and don't follow closely in the rain. If you park on a flat surface or down hill and drive properly, you shouldn't have any problems.

1. Remove the rubber inserts from the inside of the hood. Note, the first picture is what the finished mod will look like. You can leave the rubber inserts out if you choose. Not using the rubber inserts will allow more hot air out.



2. Remove the hood vents, which lift out. Lift the outside edge (clip) and run you fingers along the inside of the hood vent to the other edge (clip) and lift. The back will lift up and then the front will slide out.





3. Remove black plastic backing from hood vents and leave off. There are small clips at each end. You will need to pull one side off first, the other will follow.
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4. Switch sides of rubber inserts (right side to left and left side to right) if you choose to reuse them.
5. Place rubber inserts into the top of the hood back in the same openings, just upside down. Place the long side of the rubber insert under the metal lip at the front of the hood vent opening. You will need to press them back into the opening, don't be scared. Just a little pressure and they pop back in perfectly.



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Instead of tucking them in from the top I Chose to actually tuck them behind the hoodliner from the bottom. This so that if I ever get in a nasty rainstorm or go through a touchless carwash (yeah yeah I know.. should handwash it) I can simply pop the hood, swap the rubbers in 10 seconds so they're upside down and blocking the vents so no excessive water comes in.

View from above with vents removed. You can see the top of the MAF sensor in the drivers side opening. After the mod, the driver's side vent is in front of the sensor drawing the hot air away from it.
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6. Place the hood vents back where they came from.
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When you put the hood vents back on, fit them in at the front before you push down to clip them in. This will avoid them sticking up.



7. Test new mod!


2 comments:

  1. any tips for washing your car with this mod without the rubber inserts?

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  2. I have no problems going through the carwash. When doing a manual wash with a high-pressure hose etc I just make sure not to blast straight in there. Once in a while though you will have a trickle of water that shows up , especially when you open the hood. At that point though it just drips basically on either side of the engine and away from anything, but by holding a cloth under it as soon as you open it can catch most of it

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