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Old 02-20-2005, 09:34 PM   #1 (permalink)
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4th Generation Very confusing about buying brake rotors, help please.

I'm ready to upgrade my rear disc conversion on my gen4, i4. I'm look for parts right now, but here's my question. Is V6 front rotor fit the I4 front rotor???
Here's the rotors I want to buy
http://cgi.ebay.com/ebaymotors/ws/eB...category=33564

If not, I have to buy the I4 front rotor, and v6 rear rotor seperate.
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Old 02-20-2005, 10:39 PM   #2 (permalink)
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do you have drums on the rear now?
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Old 02-20-2005, 11:08 PM   #3 (permalink)
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Oh god not drilled rotors.


By doing 2 min worth of research, you find:
Part number: 09.5624.10 TOYOTA Camry 2.2i 16V (SXV20) 10.96->
Part number: 09.5624.10 TOYOTA Camry 3.0i V6 24V (MCV20) 10.96->

There is your answer.
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Old 02-21-2005, 09:43 AM   #4 (permalink)
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yea, i have rums on the rear now, and ready to upgrade it to v6 disc.
what's wrong drilled???
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Old 02-21-2005, 01:54 PM   #5 (permalink)
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There is some thinking that the disadvantages of cross drilling out weigh the advantages in a daily driven street vehicle.
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Old 02-21-2005, 02:31 PM   #6 (permalink)
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^ There is 0 advantage to drilling a hole in a rotor.

A rotor is nothing more than a heat sink. Air itself is a great insulator, very shitty at transferring heat. (atoms are spaced too far apart)


The more mass the rotor has, the more heat it can soak.
There-hence-forth the more heat a rotor can hold, the less fade.
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Old 02-21-2005, 02:33 PM   #7 (permalink)
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You are also losing contact patch by drilling.

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Old 02-21-2005, 02:51 PM   #8 (permalink)
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Quote:
Originally Posted by Toysrme
^ There is 0 advantage to drilling a hole in a rotor.

A rotor is nothing more than a heat sink. Air itself is a great insulator, very shitty at transferring heat. (atoms are spaced too far apart)


The more mass the rotor has, the more heat it can soak.
There-hence-forth the more heat a rotor can hold, the less fade.
Sorry bud, there are advantages to drilling holes in rotors. And your idea about fade is way off.

Drilling a rotor gives it more surface area. More surface area means that it can dissipate heat faster. Now if you aren't racing and only doing light braking the crossdrilling probably won't do anything because regular ventilated rotors would have been able to dissipate the heat fine.

While air is an insulator, it is by no means a great insulator. It does carry away heat by convection. If you managed somehow to drive your car in a vacuum, your rotors would get red hot under extreme braking because there would be no air to cool them.

Cross drilling rotors also "slightly" decreases unsprung mass in a vehicle, so they can make a very small increase in handling.

Now slotted rotors are useless for street applications as modern street brake pads don't release gasses. Also, the slots tend to shave the brake pad as the brakes are used, so they are really only good for a few races around the track, not commuting.

Brake fade comes from overheated rotors. Heat reduces friction, which reduces stopping power in the case of brakes. There is a lot of physics involved though. When you crossdrill a rotor you are removing mass that could absorb heat and lower the whole rotor temperature under hard braking. But, you are also adding surface area that helps cool the rotor down. But, if cross drilling wasn't effective you wouldn't see it on F1 cars or supersport motorcycles.

For my corolla, I don't think crossdrilled rotors would do a damn thing. The brakes usually aren't even hot after park, just warm. The car is incredibly light. For a much heavier camry, crossdrilling might help though.

Either way, if you aren't racing your car, crossdrilled rotors for most people driving on public roads are a style thing anyway.
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Old 02-21-2005, 03:47 PM   #9 (permalink)
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You don't know what you're talking about.

The purpose of a rotor and a pad is to create friction.
Friction creates heat. The purpose of the rotor is to soak as much heat as possible...
Fading occures when the pad has glazed, the rotor is completely heat soaked, and the fluid has boiled.







Drilling a hole in a rotor reduces the amount of heat the rotor can absorb and decreases the surface area available for the pad to grip the rotor. It also creates massive weak points in the rotor, which are exposed under high temperatures, and quick cooling.

The surface area of the rotor to the air is the LEAST important part of the entire equation...
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Old 02-21-2005, 03:56 PM   #10 (permalink)
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Drilled disks, Synthetic oils, Toy Red Coolant, Plugs, Religion and Politics.
No talkie.

Ooooh, forgot RICE.
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Old 02-21-2005, 03:59 PM   #11 (permalink)
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exactly

"Leave it to one of the three Lexus owners to try and make this a better place. One arguement at a time" so I've been told!
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Old 02-21-2005, 04:09 PM   #12 (permalink)
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well back to the original question... you CAN put v6 rotors on i4 fronts, BUT you need v6 calipers as well...

dont fuck with toysrme he know things you need to do a SEARCH for.
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Old 02-21-2005, 04:24 PM   #13 (permalink)
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I have changed my mind, I completely agree with toysrme.

Get in your car, get up to 45mph, slam on the brakes to avoid hitting something. Then, while you are stopped, turn ignition off, get out, and walk home.

There you go, solid rotors all the way!

I'm done with this thread, Mercedes Benz, Honda, Kawasaki, Ducati, Suzuki, et al must not know a damn thing about brake technologies.
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Old 02-21-2005, 05:05 PM   #14 (permalink)
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any commend about slotted rotors?
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Old 02-21-2005, 05:42 PM   #15 (permalink)
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