Th3Franz Posted April 7, 2009 Share Posted April 7, 2009 I contacted TI Speed to perhaps get some titanium brake shim plates made for Legacy GT fitment. They have some available for aftermarket calipers and Brembos, just not the stock calipers. Would anyone else be interested? They aren't expensive and help to keep your calipers and brake fluid cooler. http://tispeed.com/ -Franz The end of a Legacy http://www.youtube.com/th3franz Link to comment Share on other sites More sharing options...
enthusiast Posted April 8, 2009 Share Posted April 8, 2009 I would be interested in seeing how much they would be. I completely obliterated mine after my last track event last year. My mod list Link to comment Share on other sites More sharing options...
Th3Franz Posted April 8, 2009 Author Share Posted April 8, 2009 Guessing from the price of shims for other cars I think it would be about $60 for the front set. -Franz The end of a Legacy http://www.youtube.com/th3franz Link to comment Share on other sites More sharing options...
enthusiast Posted April 8, 2009 Share Posted April 8, 2009 Yeah I saw some of them were on sale. Let me know what you find out. My mod list Link to comment Share on other sites More sharing options...
RochNY91TSI Posted April 8, 2009 Share Posted April 8, 2009 Possibly interested, where exactly does this install? I can't tell from the diagrams Link to comment Share on other sites More sharing options...
Th3Franz Posted April 8, 2009 Author Share Posted April 8, 2009 It's my understanding that the shims go behind the brake pads, to insulate between the caliper/pistons and the brake pad. -Franz The end of a Legacy http://www.youtube.com/th3franz Link to comment Share on other sites More sharing options...
Guest Posted April 8, 2009 Share Posted April 8, 2009 I heard these are gimmnicks, but then some reputable companies like Girodisc market them.... I was considering getting them for my Brembos, especially that I cooked the Brembos on the track.... Link to comment Share on other sites More sharing options...
RochNY91TSI Posted April 8, 2009 Share Posted April 8, 2009 It's my understanding that the shims go behind the brake pads, to insulate between the caliper/pistons and the brake pad. Ah ok. so it's sort of a heat sink that's supposedly dissipate the heat faster... Link to comment Share on other sites More sharing options...
jamal Posted April 8, 2009 Share Posted April 8, 2009 Ah ok. so it's sort of a heat sink that's supposedly dissipate the heat faster... no, insulation to keep your calipers and brake fluid cooler since titanium has very low thermal conductivity. Many racing calipers have ti pistons. Link to comment Share on other sites More sharing options...
Bolksey85 Posted April 9, 2009 Share Posted April 9, 2009 I'm assuming something like this is kinda overkill on a street car or a DD but better suited to a track car? Link to comment Share on other sites More sharing options...
Th3Franz Posted April 9, 2009 Author Share Posted April 9, 2009 I'm assuming something like this is kinda overkill on a street car or a DD but better suited to a track car? yea unless you drive spiritedly on backroads. Basically, any situation where the brakes see higher heat these would help. -Franz The end of a Legacy http://www.youtube.com/th3franz Link to comment Share on other sites More sharing options...
praedet Posted April 9, 2009 Share Posted April 9, 2009 StopTech sells these too... But, from a materials stand point, I don't understand how they help... The Titanium will definitely stand up to heat better than the stock shims/backing plates. But, the heat transfer rate is almost as high, so just as much heat will go through these as goes through the stock shims. What we need are some type of phenolic shim (very good insulator) Link to comment Share on other sites More sharing options...
ShadowImg Posted April 9, 2009 Share Posted April 9, 2009 ^ I was under the impression the purpose is actually that titanium doesn't deform/expand as much under heat, and not so much the heat transfer rate. Though I don't think the heat transfer rate of titanium is actually all that close, I think it is significantly lower (I reserve the right to be waaaay off on this). Link to comment Share on other sites More sharing options...
praedet Posted April 9, 2009 Share Posted April 9, 2009 The expansion, compression thing might be true, but most advertise it as a way to keep fluid cooler and keep the pistons happier... And, you are Link to comment Share on other sites More sharing options...
ShadowImg Posted April 9, 2009 Share Posted April 9, 2009 Ok, for some reason I thought Titanium absorbed heat well, but didn't radiate it as readily. Link to comment Share on other sites More sharing options...
praedet Posted April 9, 2009 Share Posted April 9, 2009 Nope Link to comment Share on other sites More sharing options...
ShadowImg Posted April 9, 2009 Share Posted April 9, 2009 You should maybe email StopTech for us and find out, since they advertise it and you probably know enough to call them out. They don't seem like the types to BS, maybe a titanium alloy rather than titanium? I'm curious to know now. "These titanium inserts are installed behind the pads, dramatically reducing heat transfer to the calipers. This helps prevent dust boots from vaporizing and reduces the temperature of the brake fluid. They are especially effective when the pads have worn by 50 percent or more, since worn pads provide less thermal insulation between the rotors and calipers." Link to comment Share on other sites More sharing options...
praedet Posted April 9, 2009 Share Posted April 9, 2009 Here you go... The shims that are currently there are mild steel I believe, which is in the 25-35 range... Different materials coefficient of thermal conductivity Air 0.025 Aluminum 220 Titanium 7.4-22.0 (Depending on alloy and temp) Usually roughly equivalent to Stainless Steel. Steel 46 Stainless Steel 15 Copper 401 Concrete 1.0 Glass 1.1 Rubber 0.16 Wood 0.04-0.4 Cork 0.05 The Titanium used in most shims is about a 15. It does have a LITTLE benefit, but not as much as switching to something like concrete or glass Link to comment Share on other sites More sharing options...
ShadowImg Posted April 9, 2009 Share Posted April 9, 2009 Well I wouldn't think you'd want a huge shift, that heat has to go somewhere afterall. I guess it's hard to judge the actual heat and temperature differences in the different locations based on the shim material. Link to comment Share on other sites More sharing options...
trackhore Posted April 9, 2009 Share Posted April 9, 2009 I use glass shims. They hold up much better than the cork ones I had previously. Link to comment Share on other sites More sharing options...
praedet Posted April 9, 2009 Share Posted April 9, 2009 ^^^or Air shims... Actually, a pad that had a vacuum in the back would work pretty well Link to comment Share on other sites More sharing options...
enthusiast Posted April 9, 2009 Share Posted April 9, 2009 I wonder if racecomp engineering would make these for our cars? One of the images says Subaru on the caliper. These images are from their FB page. http://photos-h.ll.facebook.com/photos-ll-snc1/v2659/36/99/59572734222/n59572734222_1474231_333901.jpg http://photos-a.ll.facebook.com/photos-ll-snc1/v2659/36/99/59572734222/n59572734222_1474232_1891868.jpg http://photos-b.ll.facebook.com/photos-ll-snc1/v2659/36/99/59572734222/n59572734222_1474233_5963498.jpg /Off threadjack.. My mod list Link to comment Share on other sites More sharing options...
trackhore Posted April 9, 2009 Share Posted April 9, 2009 I wonder if racecomp engineering would make these for our cars? Insert quote from Big Lebowski about Danny walking in mid conversation like a two year old demanding to know what was going on:lol: FYI, its in developement, only because the new STi uses the same front knuckles. Link to comment Share on other sites More sharing options...
enthusiast Posted April 9, 2009 Share Posted April 9, 2009 I figured that all others were going of topic about having "air shims" I thought I would add to this as well. My mod list Link to comment Share on other sites More sharing options...
Th3Franz Posted April 9, 2009 Author Share Posted April 9, 2009 yes brake ducts would be ideal, but then you would need some Legacy-specific pieces to probably fit in the fog light areas and get some good airflow through the hoses to the rotors. Last I checked, WRX brake duct kits were a few hundred dollars.. -Franz The end of a Legacy http://www.youtube.com/th3franz Link to comment Share on other sites More sharing options...
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