Quote:
Originally Posted by P@ul
(Post 1860293)
:thumbup:
If you really want to have fun with this, the 94 + 3000GT Twin Turbo also came with these Sumitomo calipers.
40.4x2 + 42.8x2 piston setup in the front (From: Stealth 316)
38.1x2 piston setup in the rear
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Also note the pistons on the 3kgt brakes are differentially sized, so it's important to know that the orientation is correct. What I mean is the OE Sti brembo pistons are different too, and since the caliper on the FR-S is behind the axle (as opposed to leading or vice versa, don't remember, point is, it's the opposite of the Stis) then the wrong piston becomes the leading edge... I wish I could quote whoever provided the info.... It was a while ago. I think @
Dave-ROR actually. I am just trying to recall all I've learned reading countless brake threads... :iono:
Quote:
Originally Posted by eikond
(Post 1910378)
I've been driving on these for about a month now.. They are great! I'm very happy with the modulation, feel, etc.. I have only had a few instances where I've had to brake hard and I've worried about the car behind me rear-ending me rather than me hitting the car in front.. i guess that's a good sign.
The one thing about this whole package that has been bothering me is the weight of the upgraded Leg GT 316mm rotors. To be honest, I haven't felt the added weight myself.. but I know from a factual standpoint that the extra weight (especially un-sprung weight) is a detriment to performance.
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:bonk:
HAHAHA It's like... reverse butt dyno! True perfectionism- love it.
SKIP TO FILTER OT NONSENSE - - All this talk of rotational mass reminds me of my cycling experience... Measuring parts (EVERYTHING, like EVERY SCREW) to grams to reduce weight. Way more important when 400g is 5% of the total weight.... buttttt.... Our generally excepted totally uneducated not claiming right formula, is rotational weight is worth roughly double that of static. The entire bike can be essentially considered unsprung, even with suspension components, and weight carried on your body is your static. Which is why it is better to have 144oz camelback than a freaking gallon of water strapped to your bike! It is a HUGE difference. Also, in regards to rotors, I remember specifically same caliper and pads, (hydraulic disc brakes also lol...) going to 8" rotors from 6", was noticeable. Stopped better, more torque, also resulted in heating up pads faster, but the rotors cooled faster, and since it was not enclosed, the exterior portion of the rotors cooling surface, is also moving faster, which, on a bike now going 4mph uphill is a huge deal. Doubt it makes a difference on a car. SOOOO OT. Sorry guys... Still. Admire the, "I know it almost doesn't matter, but I don't want to add weight. I want to add lightness."
Anyone have experience with RacingBrake 1 piece rotors? @
JRitt @
Dave-ROR
Can't speak for any other products, from personal experience, or for their newer stuff- don't want to bad mouth, just check into it before spending $, which you're doing obviously. But check the vw forums... There are horror stories of their BBK calipers failing. The crossover simply breaking free from the caliper. Complete loss of brakes. Warranty denied. Biggest issue that everyone agreed on was crappy customer service. Perhaps not?
What about a DBA 4000 series for the LGT? Don't they have better cooling vanes? Since we have essentially determined the weight while increased, is very much negligible, (other than in your mind KNOWING it's there :P) but cooling should be better, why not just improve the good qualities you have- since removing mass from the rotor *COULD* remove cooling potential- or maybe offset by better vaning? God knows. My head hurts from this read, but thanks everyone for all the info.
More OT Crap here - - - I should also note- I'm extremely proud of myself for my calculations on my own being determined as what was right. :D Totally patting myself on the back, you can all hate me for it. re-reading, trying to help my buddy with his celica GT-S not have to pay for a freaking TRD bbk. *SIGH* Told him tires. Auto-x, determine next issue. Hoping to find a vented rear OE brake for it, and then use Avensis front brakes. Same piston, larger pad, larger rotor, so need to balance it out in the back. his back brakes look like my 94 Miatas... Pathetic. Then again, my 94M will stop dam good for what it is. Not... a ton of times. but once or twice :P OH yeah, *facepalm* brakes don't stop car brakes don't stop car *repeating in head*
Not a waste of time, you made this amazing thread.
You guys freaking rock. I love this forum, so much less ... abusive? than others, and I always learn something... and hopefully don't dump it later. Thanks for putting this together OP! Following closely, and if for NOTHING ELSE than cosmetics, this could be worth it to me if it doesn't make the brakes worse, I do drive hard? Spiritidly? (I've definitely cooked the stock pads before...) but when brake upgrade time comes around, might do this instead of the pads/rotors/lines with stock brakes, and just tack on a bit more, and do calipers as well.
