Quote:
Originally Posted by Pat
Mike, I love reading your posts. We've never met, but as far as I can tell, you're experienced with these cars.
I can't get rid of this nagging feeling, though. I have a couple friends that I was at the track with, both of which said with great confidence that I don't need a BBK. One rode with me and knows me very well. He was a pro racer at one point and I trust his judgement. The other is a national champion autocrosser and maybe fender to fender national champ as well. He owns a BRZ and has built several. He also said with confidence there's no need for a BBK. Does this surprise you?
I feel like this has been discussed ad nauseam, but can't stop thinking about it.
I'd love to hear what others have to say on this.
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Do you absolutely need a BBK to do one or two laps? No. Big ducting and aggressive pads will probably buy you enough overhead, as long as you stay NA, to do more laps. Will getting a BBK reduce your running cost? Absolutely.
The metal fatigue will eventually cause your caliper to fail. The metal fatigue will cause your stock rotors to crack. Rotors cracking (instead of getting heavily webbed with small fractures that don't propagate) is a sign that the heat cycles are too large, which means the temps are probably getting too high to begin with.
If you want to do some of your own research, try using temperature paint on your rotors, and temp strips on your calipers. Ours went off the charts under our testing. It was so severe that we had a BBK on the 2013 BRZ before we had coilovers on. This is partially dependent on your own level of development in your driving.
The cost of not having a BBK: I crack as many as 3 rotors per day when I track my S2000. The problem is, it's REALLY difficult to find wheels that clear a BBK on a S2000 without some serious work. My pads last me 4 days, at best.