240zip Posted February 15, 2013 Share Posted February 15, 2013 I was curious to see people's opinions of the various options out there. I'm going with cross drilled discs and 280ZX rears and 4Runner 4x4 S-12 calipers with the 15/16" 280ZX master cylinder. Here are my options ... MSA Cross Drilled Rotors .... anyone know the manufacturer of MSA's offering? $220 http://www.thezstore.com/page/TZS/CTGY/PBC06 Centric $190 http://www.ebay.com/itm/Nissan-240Z-70-73-Performance-Drill-Slot-Brake-Rotors-Pads-Set-FRONT-KIT-/360593169447?pt=Motors_Car_Truck_Parts_Accessories&fits=Model%3A240Z&hash=item53f5071c27&vxp=mtr Mountain Rotors - these are not slotted or cross drilled but can be had for around $50 each $100 http://www.partsgeek.com/mmparts/brake_rotors/nissan/240z.html You could (in theory) cross drill the mountain rotors in DIY fashion http://www.zcsd.org/tech-articles/crossdrill-rotors.php Reuse stock 240Z rotors, turned by PepBoys ($6 each) and then cross drilled DIY fashion (as above) .... $20 You'd need to factor in a few drill bits. Quote Link to comment Share on other sites More sharing options...
R3VO 3VOM Posted February 15, 2013 Share Posted February 15, 2013 Why do you want to go cross drilled? Dimpled/slotted are the way to go for racing applications (I assume that's what your doing since you're looking into it). Cross drilling the rotors gives them stress points to crack from under hard braking. Unless your tracking your Z, the stock ones should do just fine. Quote Link to comment Share on other sites More sharing options...
240zip Posted February 15, 2013 Author Share Posted February 15, 2013 I've seen that slotted dimpled rotors are common in Australia. I've yet to see dimpled rotors for the 240Z in the US. Quote Link to comment Share on other sites More sharing options...
Xnke Posted February 16, 2013 Share Posted February 16, 2013 Why bother with slotted OR dimpled? Are your brake compounds blowing off THAT much gas? Drilled, slotted, dimpled...they all sacrifice ultimate braking ability for looks/gas handling/cool factor. Modern brake compounds don't outgas nearly as much as some of the old ones did; that outgassing was the reason behind the drilled/slotted rotors. It's not for cooling, it's not for weight reduction...it was to give the gas from burning brake pads a place to go, instead of floating the pad. In short, why sacrifice both rotor integrity AND ultimate braking strength by removing rotor material? Quote Link to comment Share on other sites More sharing options...
R3VO 3VOM Posted February 17, 2013 Share Posted February 17, 2013 (edited) Um I do not believe you are entirely correct there. Yes, the slots are there to disperse the gas; the surface area you lose by the slots is offset by the release of the gas pressure. However, they don't sacrifice really any braking ability. There's a reason race cars like the Corvette C6.R use slotted rotors; they're pure function. They seem to work well for them and a lot of other race cars; if they didn't I'm sure they would've switched away. When drilled rotors came out they were the thing to have on race cars but because of the extreme stress put on the rotors under hard braking, the rotors would crack because each drill is a point from which to stress crack under repetitive extreme braking situations. (Now I will say that the new carbon ceramic rotors they are fitting to the high end GT race cars are drilled. I'm sure that has something to do with the rotors construction. But for all intensive purposes I don't think we're talking about them here) But again this is all racing. Street use there really isn't a need/use unless you want the look. Edited February 17, 2013 by R3VO 3VOM Quote Link to comment Share on other sites More sharing options...
30 ounce Posted February 17, 2013 Share Posted February 17, 2013 Is this for the turbo build? If you are going to track it I would go with the slotted and vented disks like these: http://www.silverminemotors.com/Front-Big-Brake-Kit-stage-4-Front-Big-Brake-Kit-Stage-4.htm This is what I have. Ryan can tell you how well they work on the track... Quote Link to comment Share on other sites More sharing options...
240zip Posted February 20, 2013 Author Share Posted February 20, 2013 Did you get the whole set-up from Silvermine or did you piece them together including the spacers? Quote Link to comment Share on other sites More sharing options...
30 ounce Posted February 21, 2013 Share Posted February 21, 2013 I got the whole setup including the rear GT 500 disc setup. You can save a bit sourcing everything individually but I didn't want to go the hassle. Quote Link to comment Share on other sites More sharing options...
LanceVance Posted February 21, 2013 Share Posted February 21, 2013 I've got the S12 calipers and drilled/slotted rotors... And if I had a running motor I would be able to give an opinion! The look pretty sharp though! They are from R1 Concepts, and were very reasonably priced. Quote Link to comment Share on other sites More sharing options...
240zip Posted March 5, 2013 Author Share Posted March 5, 2013 Is this for the turbo build? If you are going to track it I would go with the slotted and vented disks like these: http://www.silverminemotors.com/Front-Big-Brake-Kit-stage-4-Front-Big-Brake-Kit-Stage-4.htm This is what I have. Ryan can tell you how well they work on the track... That's what I ended up getting from Silvermine. Packaged arrived complete with the 15/16 Master set-up. That in combination with the rear disc set-up should be good for the turbo build. Ryan is focused on is 240SX LS drift car at the moment. Quote Link to comment Share on other sites More sharing options...
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