C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

When replacing J55 front rotors

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Old Jan 14, 2007 | 06:39 PM
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Default When replacing J55 front rotors

Make sure you put them on the correct side

The replacements are not marked like the originals

That is all
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Old Jan 14, 2007 | 08:56 PM
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I thought the J55 front rotors where interchangeable right/left?
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Old Jan 14, 2007 | 09:28 PM
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Originally Posted by Zix
I thought the J55 front rotors where interchangeable right/left?
So did I
Nope They are stamped on the inside RH and LH
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Old Jan 14, 2007 | 09:37 PM
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Originally Posted by 94ZR1
So did I
Nope They are stamped on the inside RH and LH
Other than the RH/LH are there really any other differences? I'm trying to remember taking them off my car a while ago and don't remember anything that would stop someone from taking one for the right and putting it on the left and vice versa
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Old Jan 14, 2007 | 09:52 PM
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The difference is the air fins are curved and are directional. The air flow helps to cool the rotor. When turning in the correct direction. The air is taken from the center or inside and exhausted to the top or outside edge of the rotor.

Brake wise they are the same, the cooling is what makes them directional.
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Old Jan 14, 2007 | 09:55 PM
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Ah, that makes sense!
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Old Jan 14, 2007 | 09:57 PM
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Originally Posted by pcolt94
The difference is the air fins are curved and are directional. The air flow helps to cool the rotor. When turning in the correct direction. The air is taken from the center or inside and exhausted to the top or outside edge of the rotor.
Brake wise they are the same, the cooling is what makes them directional.
Bullseye!
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Old Jan 14, 2007 | 10:21 PM
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Originally Posted by pcolt94
The difference is the air fins are curved and are directional. The air flow helps to cool the rotor. When turning in the correct direction. The air is taken from the center or inside and exhausted to the top or outside edge of the rotor.

Brake wise they are the same, the cooling is what makes them directional.
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