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Back at the track - update 2 ccm rotors/sintered metal pads
First track weekend for me this year. Friday was more or less dry, used about 40 gal of race gas ($). Sat was quite wet and used 15 gal...
My friend Tim (TargaTim) in 2010 gt3RS joined me on Sat, still had fun in the rain. New Toyo R88R worked good in the dry and reasonably in the rain, even at speed probably as they are new and have good tread still.
Ok for the sintered pads which are supposed to 'heal' the ccm rotors, you can see the surface of the rotors on this previous post, there are pits caused by carbon fibre weave that come to the surface disappearing with use. https://rennlist.com/forums/showthre...ferrerid=28499
Brakes/pads performed fine, no hint of fade, progressive, able to keep at the edge/just shy of setting off abs, lots less pedal pressure in general to stock brakes.
Here's how they look now after a couple of days at the track (one dry, one wet). I also washed the car/sprayed the discs with a stream of water. Most of the time brake dust can be washed out of the rotor holes with a strong jet of water, but the the material left by the sintered metal pads seem hard and won't wash off. Also noticed that there really wasn't much brake dust in general.
Pad material has filled in all the pits, surface looks and feels quite different from before. The orange material is all the deposits.
Here's a vid of me opening up some of the holes in the rotor, the material will 'flick' off with some pressure. I guess it's good that the pits get filled in with pad material, it's not like brake dust, it's actually sold material that gets deposited. Sort of 'healing" I guess. Will monitor pad longevity, and what happens to the rotors after more use.
Pic with me in the technologically handicapped 20+ yr old car in front of the gt3rs, usually I’m so far out in front it’s unusual to catch both cars in one pic
Here's a vid of me opening up some of the holes in the rotor, the material will 'flick' off with some pressure. I guess it's good that the pits get filled in with pad material, it's not like brake dust, it's actually sold material that gets deposited. Sort of 'healing" I guess. Will monitor pad longevity, and what happens to the rotors after more use.
Any reason for you not having a front spoiler ? It does make a difference.
Try compressed air, super high pressure, for brake dust. Don't breath it in to much
^ looks like fun.
I've not had a front spoiler as I've never really thought I had problems with understeer. I get oversteer regardless of a long sweeper or coming out a little too heavy footed out of a corner.
Using 235/35/19 and 305/30/19 - to fit over the brakes - but prior using 255/35/18 and 315/30/18.
Well, I've been thinking about this a little more since you mentioned a front spoiler, I did seem to need to work a little harder in the corners and thought I was needing a little more steering input into a couple of the lower speed corners. I'm a little limited in tires sizes in 19". Maybe I should try a front spoiler -thx. I'll try a little more aggressive alignment in the front in the mean time.
04-29-2018, 03:53 PM
Back at the track - update 2 ccm rotors/sintered metal pads
hehe I am back to with the 964 Biturbo
