Brake pads gLoc vs Raybestos
I recently picked up an NB track project. The car will be prepped similar to Supermiata S2, normally aspirated ~140rwhp 2200-2300 lbs, track only use. It has the stock 2000 non-sport brakes on it now. I'll be adding 3" ducts and a bias adjustment valve. I'll be on R-comps (NT01, RC1, RR) in 205 and/or 225. I've run a lot of different pads on other racecars through the years (Pagid orange, PFC 97, Hawk blue, Porterfield, Raybestos, etc). I had a street legal NA for a short period of time and used Raybestos ST43 front and Porterfield R4 rears based on the recommendation of Porterfield Enterprises. It seemed like a decent combo but I really didn't spend enough time on it to form a strong opinion. In general the ST43 has been a good pad for me and I've used them on 3 or 4 different platforms. The amount of bite, modulation, reasonable cost, and low wear has been good.
Looking at the Miata world, especially Supermiata, it appears that the gLoc and Carbotech pads are the most popular. Has anyone run both the gLoc and Raybestos pads? How do the gLoc compare? Seems like the gLoc combinations are all over the board too: R18/10, R12/10, R10/R8, etc. Is there any consensus? Obviously I'll be testing things out myself but I'm looking for impressions now. Looking at my data (in other cars), I have no issues braking late but have a tendency to overslow the car at times, so I'm not sure I need the highest friction coefficient to maximize performance. Maybe I'm better off with a little less bite and better modulation? Should I stick with what I know or give gLoc a shot? |
None of the above, PFC 97 or PFC 11's is my preference. Not super aggressive bite and the easiest to modulate pads I've used. I prefer less initial bite so I'm not locking up tires all the damn time. Also, try different pads and see what works best for your driving style
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I have a combo of PFC 01 and 11's (for all tangible purposes they are the same) and I am happy with them. Nice bite, no squealing sounds, streetcar friendly... they just dust quite a bit.
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gLoc guys are former carbotech people. I have not used em but would hold em in high regard based on carbotech experiences. I suspect they maybe one of your best options for a pad that bites well and modulates well.
Love the Cobalt pads myself! Great bite and wear properties. Probably takes a back seat to gLoc/Carbotech for modulation (think everything does) but they work the best for my application. PFC is another top contender. Between these three you’ll find the best results. If mixed driving gLoc pads are the best option IMHO. |
Thanks for the info. I've run PFC 97 before and they are good, the ST43 seemed to have a stronger initial bite, but both were easy to modulate and not too hard on rotors. I've heard the 01/11 is a newer and better compound. Haven't tried Cobalt yet. I found some good comparisons online and people seem to love the gLoc performance but the pad life is very limited (on heavier cars anyway).
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For your power and weight, I would do Raybestos ST42 (front and rear) instead of ST43. The feel and modulation is almost equal to carbotech but the ST42 has much much longer life. Most of the racers on this forum have found the ST43 to be too aggressive for a low power miata.
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Well I ended up going for the gLoc pads, R12/10. I needed stainless lines anyway and the whole enchilada (pads, lines, rotors, and fluid) was only like $50 more than the pads and lines separately so I purchased the complete kit from Supermiata. It may be a little while before I can use them in anger but I'll try to report my impressions on this thread. Thanks for the comments and adding a few new pad options to my list to try out.
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Good choice. I run that combo on 140rwkw track/street. Lots of dust on the fronts, it is hard to clean but doesn't damage the wheel finish, so I generally sport a 'black front wheels, silver rear wheels' look ...
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I have raced the following on basic naturally (110-125 whp) HPDE & endurance race cars, here's my opinions so far. No opinions on dust as I more or less never clean anything on my own cars & some of these opinions are based on other peoples' endurance race cars.
Normal 1.8 brakes
1.6 Brakes: (not my car, 200tw and no aero)
Weird Experiences: W2W ice racing on street legal studded tires with standard 1.8 brakes and no ABS- unique because very low maximum grip & minimal weight transfer due to low longitudinal g-force. I would guess .15 to .3g depending on how good the ice ice from weather conditions and how early in the race it is (WRC studded rally tires alternate heats with street legal tires, they make the track abrasive for good grip early in our races but pace falls off as street tires polish off the surface at an average of 8 seconds in 3 laps on courses about a mile long)
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Originally Posted by the.cheat
(Post 1552788)
G-Loc R10 front/R-8 rear IIRC:- our test session we wanted to use to bed brakes was spoiled by heavy rain, we had to run a whole 24 hr on poorly bedded pads. I drove 20 hours into the race and it was horrible, the car shook like crazy every time you were in a braking zone. No reference to a properly bedded set of brakes but I have been favoring other brands due to their less stringent bedding procedures and adequate performance for my usage.
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Originally Posted by DeerHunter
(Post 1552834)
G-LOC track pads are available pre-bedded. This is an fairly inexpensive option which makes them work well right out of the box (well, if you've already put down a G-LOC-friendly transfer layer on your rotors). When I took delivery of my 30AE ND2, I immediately replaced the OEM pads with G-LOC GS-1 street pads and drove that way until break-in was complete. Pre-bedded R10 front pads were installed in preparation for the drive to Laguna Seca and they worked like gang-busters on the first stop. Great modulation but able to invoke ABS with no problems at all. The R10s are street-friendly in that they work well when dead cold but they are noisier than is ideal for non-track use.
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I have used Carbotech/g-lock since starting with my MX5 6-7 years ago.
I would hardly say the bedding in process is finicky. A quick trip around the block getting them nice and hot a day or so before a race meeting is all i have ever done when I made an effort. Soemtimes I have used them straight up in a practice qualifying and had no major difference. Though this is with G-Lock dedicated rotors. I like them so much I import them from Supermiata to New Zealand. No damage to wheels, easy to clean (if they dont get wet and dry for too long). Perform exactly as described with the heat and friction capabilities. Mix and match front to rear for good balance. (I have no bias adjustment, never felt I needed one with these). In fact I dont get all the brake pad talk that goes on consatantly when im out racing, Hawk this, Padgett that. They just work so I have nothing to discuss......Pretty hard to beat. |
Originally Posted by mx5-kiwi
(Post 1552937)
I have used Carbotech/g-lock since starting with my MX5 6-7 years ago.
I would hardly say the bedding in process is finicky. A quick trip around the block getting them nice and hot a day or so before a race meeting is all i have ever done when I made an effort. Soemtimes I have used them straight up in a practice qualifying and had no major difference. Though this is with G-Lock dedicated rotors. I like them so much I import them from Supermiata to New Zealand. No damage to wheels, easy to clean (if they dont get wet and dry for too long). Perform exactly as described with the heat and friction capabilities. Mix and match front to rear for good balance. (I have no bias adjustment, never felt I needed one with these). In fact I dont get all the brake pad talk that goes on consatantly when im out racing, Hawk this, Padgett that. They just work so I have nothing to discuss......Pretty hard to beat. Start doing 70-5 stops until they stink and the pedal gets soft, let them cool completely. Done. |
Yikes, all I said was that I raced on a poorly bedded set and it was an awful experience- not trashing them overall. Can anyone compare them to the PFC/Raybestos I like? Maybe I will try them again- if they offer any significant advantages.
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Originally Posted by the.cheat
(Post 1553199)
Yikes, all I said was that I raced on a poorly bedded set and it was an awful experience- not trashing them overall. Can anyone compare them to the PFC/Raybestos I like? Maybe I will try them again- if they offer any significant advantages.
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