is this a carbon fiber rear hatch?
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www.rx7store.net sells them too..
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Super Snuggles
Joined: Feb 2001
Posts: 10,091
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From: Redmond, WA
Not very much... replacing the stock hatch is about as much of a waste of time as replacing the hood with carbon fiber. It may look cool, and you get the bragging points for carbon fiber, but you won't be saving much weight. Mazda really did their homework, and they even had a budget for how much the glass in the car could weigh.
If you want to try a little experiment, pop your hatch. Put one finger on the inside of the glass, assuming you don't have limo tint on it, and the put one on the outside of the glass directly over it. Check the gap between your two fingers... that glass is as light weight and as thin as possible, and the curve is actually part of the structural rigidity that made it possible. An acrylic replacement would also scratch more easily, just like an acrylic headlight lens would.
It's easier to add 20 horsepower, and probably far cheaper, than it is to save a few pounds by replacing the stock body parts. After you've exhausted all other upgrades, then worry about lightening body pieces or Extrude Honing your intake manifold, or porting your throttle body.
If you want to try a little experiment, pop your hatch. Put one finger on the inside of the glass, assuming you don't have limo tint on it, and the put one on the outside of the glass directly over it. Check the gap between your two fingers... that glass is as light weight and as thin as possible, and the curve is actually part of the structural rigidity that made it possible. An acrylic replacement would also scratch more easily, just like an acrylic headlight lens would.
It's easier to add 20 horsepower, and probably far cheaper, than it is to save a few pounds by replacing the stock body parts. After you've exhausted all other upgrades, then worry about lightening body pieces or Extrude Honing your intake manifold, or porting your throttle body.
