Che'_Moderator Posted July 7, 2009 Report Share Posted July 7, 2009 Big brakes are the best mod I ever did. And 2-piece rotors can be lighter than stock rotors (especially if you own a P2 R) i agree +1 for you Link to comment Share on other sites More sharing options...
--Aaron-- Posted July 7, 2009 Report Share Posted July 7, 2009 :lol: I don't know stuff about BBKs but this thread is a weiner. Link to comment Share on other sites More sharing options...
Chilled man Posted July 7, 2009 Report Share Posted July 7, 2009 Big brakes are the best mod I ever did. And 2-piece rotors can be lighter than stock rotors (especially if you own a P2 R) acutally you can use the S60R rotors or 2 peice ones made for those on any car 93-00 for 850/s/c/v70 Link to comment Share on other sites More sharing options...
Black Betty Posted July 7, 2009 Report Share Posted July 7, 2009 Let me get this straight. You went to a heavier rim and tire combo and lost hp, and that doesn't bother you because you like the way the wheels look, but you dont want to do a bbk because you might loose 10 hp. So for you looks are more important than saftey? You did say you wanted the bbk for looks.... I guess I would suggest the 302 conversion. I didn't notice a difference in hp they certainly fill out the rim better than 280's and I did notice a little bit improvement in the amount of brake fade I got. Still IMO saftey> looks Link to comment Share on other sites More sharing options...
volvo4lif3 Posted July 8, 2009 Report Share Posted July 8, 2009 Let me get this straight. You went to a heavier rim and tire combo and lost hp, and that doesn't bother you because you like the way the wheels look, but you dont want to do a bbk because you might loose 10 hp. So for you looks are more important than saftey? You did say you wanted the bbk for looks.... I guess I would suggest the 302 conversion. I didn't notice a difference in hp they certainly fill out the rim better than 280's and I did notice a little bit improvement in the amount of brake fade I got. Still IMO saftey> looks correct me if i'm wrong but for the 302 conversion consists of the larger caliper and and rotor from the T5? and also..... 98-00 s70 GLT = 280mm 98-00 s70 T5 = 302mm and 01-09 s60 GLT (2.4/2.5L) = 280mm 01-09 s60 T5 = 302mm Link to comment Share on other sites More sharing options...
ErikS Posted July 8, 2009 Report Share Posted July 8, 2009 Rotors and calipers, you get what you pay for. If you are worrying about the rotational mass, you don't have enough torque. If you know you don't have enough torque, it doesn't really matter anyways. Link to comment Share on other sites More sharing options...
Kit Vexed Posted July 8, 2009 Author Report Share Posted July 8, 2009 okay, let me clarify gentlemen... i said i got wheels because the stock 205's were so thin, and i'd wanted bigger and better rubber for handling - and yes, the new wheels look 'good'. as far as the bigger brakes (porsche kit), i said they do look good, but they would be 'overkill' for my type of driving; check my previous posts. so in lieu of the fact i went with a bigger wheel, i think the handling out-weighs the loss of some hp to the ground, but wasnt sure if the braking i'd get from a bbk would out-weigh the loss of power.. that's why i created this topic. i have iPd stage I, build 16t, rip kit, EST exhaust, MSD, stylin kit, on and on. but what im saying is, all these mods created power.. IS IT WORTH IT TO GO BACKWARDS IN HP FOR BRAKES?? that's all im saying. would an upgraded stock set of rotors (like powerstop, ebc, etc.), pads, and SS lines, suffice? or how much heavier are the 302's than the 280's??? how about answering that question? Link to comment Share on other sites More sharing options...
HtownTurboBrick Posted July 8, 2009 Report Share Posted July 8, 2009 302's came on 2000 R's, 280mm came on everything else before then. Calipers are the same on all cars, just need different brackets for the 302's. Link to comment Share on other sites More sharing options...
Ipd Posted July 8, 2009 Report Share Posted July 8, 2009 I was under the understanding that the 302mm brakes were on C70 models as early as 98 and that the caliper pistons are 2mm larger Haven't had a chance to actually measure one yet, anyone have info otherwise? Link to comment Share on other sites More sharing options...
Johann Posted July 8, 2009 Report Share Posted July 8, 2009 I was under the understanding that the 302mm brakes were on C70 models as early as 98 and that the caliper pistons are 2mm larger Haven't had a chance to actually measure one yet, anyone have info otherwise? 302 started early X70. My '97 V70T5 came with 302's already but I exchanged them for AP's within a week or two... The caliper is the same, the bracket holding the caliper is larger compared to the 280 mm version. I don't think the bracket is available from Volvo anymore. Link to comment Share on other sites More sharing options...
Zappo Posted July 8, 2009 Report Share Posted July 8, 2009 i have iPd stage I, build 16t, rip kit, EST exhaust, MSD, stylin kit, on and on. but what im saying is, all these mods created power.. IS IT WORTH IT TO GO BACKWARDS IN HP FOR BRAKES?? that's all im saying. would an upgraded stock set of rotors (like powerstop, ebc, etc.), pads, and SS lines, suffice? or how much heavier are the 302's than the 280's??? how about answering that question? You probably lost HP with the rip kit if you are on a 16t. What are you doing with the car? If you aren't racing, then it doesn't matter and we can just close the thread. The difference between the 302 and 280 is the rotor. Bracket weight difference is insignificant, so you are looking at 2 or 3 lbs more per side. Link to comment Share on other sites More sharing options...
AverageVolvo Posted July 8, 2009 Report Share Posted July 8, 2009 okay, let me clarify gentlemen... i said i got wheels because the stock 205's were so thin, and i'd wanted bigger and better rubber for handling - and yes, the new wheels look 'good'. as far as the bigger brakes (porsche kit), i said they do look good, but they would be 'overkill' for my type of driving; check my previous posts. so in lieu of the fact i went with a bigger wheel, i think the handling out-weighs the loss of some hp to the ground, but wasnt sure if the braking i'd get from a bbk would out-weigh the loss of power.. that's why i created this topic. i have iPd stage I, build 16t, rip kit, EST exhaust, MSD, stylin kit, on and on. but what im saying is, all these mods created power.. IS IT WORTH IT TO GO BACKWARDS IN HP FOR BRAKES?? that's all im saying. would an upgraded stock set of rotors (like powerstop, ebc, etc.), pads, and SS lines, suffice? or how much heavier are the 302's than the 280's??? how about answering that question? YES! Again , look at the overall picture. Sure you may be able to possibly get off the line quicker with less weight, But it is probably 1/20 of a second. Every 100lbs is apprx .1 less 0-60 . so 50lbs increase from brakes would be 1/20th slower or apprx 4hp. Additionally, As soon as we get to a road other than a straight line, A car with a bbk will destroy you, they can brake later and stop quicker allowing them to carry more speed into turns. Just my .02$ And my 17lb 17in with bbk is probably similar weight to your 18's with stock brakes. I personally built my suspension and brakes , and then did my manual swap and Ecu. This way , I can safely ensure that my car can handle the power . Link to comment Share on other sites More sharing options...
Che'_Moderator Posted July 8, 2009 Report Share Posted July 8, 2009 YES! Again , look at the overall picture. Sure you may be able to possibly get off the line quicker with less weight, But it is probably 1/20 of a second. Every 100lbs is apprx .1 less 0-60 . so 50lbs increase from brakes would be 1/20th slower or apprx 4hp. Additionally, As soon as we get to a road other than a straight line, A car with a bbk will destroy you, they can brake later and stop quicker allowing them to carry more speed into turns. Just my .02$ And my 17lb 17in with bbk is probably similar weight to your 18's with stock brakes. I personally built my suspension and brakes , and then did my manual swap and Ecu. This way , I can safely ensure that my car can handle the power . 1/20 is for sprung weight not unsprung. Its more. But saying screw braking is still dumb if your goals are performance. Link to comment Share on other sites More sharing options...
HtownTurboBrick Posted July 8, 2009 Report Share Posted July 8, 2009 302 brackets are still sold here in the states. DW volvo has the brackets with 2 zimmerman drilled rotors for $200. So were the 302's just an option then? Link to comment Share on other sites More sharing options...
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