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slotted, cross drilled, or both

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Discussion Starter · #1 ·
well the name says it all... the very fist upgrade im doing to my 240 is brakes and i want to know your opinion on the 2 different options... or getting both.
 

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It kinda depends.I think all you need is slotted. If its a good drilled rotor then the hole should be cast in to the rotor , the cheaper ones are drilled out. The problem with cross drilled rotors is that they crack.
 

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sr240dett3 said:
Drill- crack
I second this, it happened to my cross-drilled and slotted rotors, if you looks close enough, you could see some hairline stress cracks. I like the look of cross drilled and slotted, but when the time comes to buy another set, im just going with slotted.
 
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slotted. but on the 240, the only slotted or cross drilled rotors you're going to find were made that way at a machine shop after the rotor was cast. just get brembo blanks, you'll be fine.
 

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gtp420 said:
It kinda depends.I think all you need is slotted. If its a good drilled rotor then the hole should be cast in to the rotor , the cheaper ones are drilled out. The problem with cross drilled rotors is that they crack.
Uh, wrong. The only rotors that have holes casted into them are the (this is where I can't rember) I believe it was the ceramic rotors for porsches. Normal rotors are drilled.

Again if it's done correctly cross drilled rotors function just fine, but are known to crack. However, with newer pads slotting and cross drilling isn't even necessary. So, both are more for looks than anything else.

I have slotted and cross drilled on all four corners simply because of cost. I did a 5 lug swap along with 26mm 300zx brakes in the front. Finding oem blanks in that sized turned out to be slightly difficult. Brembo only made the 30mm rotor (and when i found the rotor I needed it was expensive). So ebay sold me front Z rotors for cheap and the rear rotors i got that were slotted and cross drilled (again, I just did a 5 lug conversion in the back, no z brakes) were just cheaper than getting blanks. I figure that if/when i start to see cracks in my rotors I'll just spend the money and make sure I get some zinc coated ones that won't rust nearly as much and at most I'll just get slotted ones.
 

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Discussion Starter · #9 ·
yeah i was lookin at the brembo Gran Turismo Brake Systems yeah dont laugh i have the cash they are around 3 grand and i have always been go big or go home and i have an auto X that my uncle is in and he is 10th in the province and i would like to compete with him.
 
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pte.240 said:
yeah i was lookin at the brembo Gran Turismo Brake Systems yeah dont laugh i have the cash they are around 3 grand and i have always been go big or go home and i have an auto X that my uncle is in and he is 10th in the province and i would like to compete with him.
sorry, you're 18 years old. you're a dreamer.

you also don't need that kind of braking power to "compete"... z32 brakes would be more than enough to stop however much force you can exert from whatever's powering your 240.
 

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i had some brembo drilled and slotted on my crx and 3 out of 4 rotors had holes that cracked so next time i am going to get slotted
 

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cross drilled is pointless. they say it helps gasses escape, but so do slotted. some may argue it saves unspring weight, but you sacrifice like 1lb for the durability of your rotors. crossdrilled eats your pads far more than slotted. just look at all the jgtc cars and circuit cars. they seem to have either blank or slotted.
 

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Just to add in...if you want to resurface your rotors because they're warped...you can't do it on a X-drilled or slotted..at least that's what I was told. I specifically went with Brembo blanks for my Z brakes mostly for the reliability and sleeper look.
 
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