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titanium brake shims

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#62 ·
None of the tracks I attend allow for a cool down lap. I suppose you can keep an eye on the time and guess at when the checkered flag gets thrown, but at best I get 1/2 a lap of cooling/parade (flag is usually first show on back straight). Which I take as slow as possible with as little brake use as possible. Paddock speed limits are 10 mph so can't putz around that cooling either. Also keep in mind our front brakes have heat/dust shields on the backside of the rotors, not ideal for dissipating heat. If I was going to continually track my car removing them is one of the first things I'd do.
 
#63 ·
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#64 ·
Replaced my front caliper piston seals this weekend. They were toast after 3 track days and no shims. The rubber was falling apart even on the ones that weren’t torn. Ordered the ELIG TI shims from Lamspeed for VIR time trials in March. Will probably look into Verus Brake cooling ducts as well when the ambient temps come back up in the spring.

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#65 ·
Just ordered some Endless SSM plus pads and ACRE titanium brake shims to hopefully significantly reduce brake dust while not sacrificing much performance. Both front and rears is only $211 if ordered from Blackhawk Japan. Shipping to the states was an additional $64. They also sell the ACRE titanium GRY brake shims for $113, which is a bit pricey, but doesnt add much weight when shipped with the Endless brake pads and only added $2 to the shipping. So total shipping for the pads and shims was $66.
The price of the Endless pads even with the $65 shipping charges at $276 is a damn good deal though. If i were to order just the ACRE shims it would have been $113 + $18 for shipping, or if i were to order the other shims from lamspeed, it rould have been $80+$55 for shipping, so basically about $130 USD shipped for either set.
Really only worth getting the shims on Blackhawk if you order some pads as well to save on shipping.
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#66 ·
Tokyotexan said:
Just ordered some Endless SSM plus pads and ACRE titanium brake shims to hopefully significantly reduce brake dust while not sacrificing much performance. Both front and rears is only $211 if ordered from Blackhawk Japan. Shipping to the states was an additional $64. They also sell the ACRE titanium GRY brake shims for $113, which is a bit pricey, but doesnt add much weight when shipped with the Endless brake pads and only added $2 to the shipping. So total shipping for the pads and shims was $66.
The price of the Endless pads even with the $65 shipping charges at $276 is a damn good deal though. If i were to order just the ACRE shims it would have been $113 + $18 for shipping, or if i were to order the other shims from lamspeed, it rould have been $80+$55 for shipping, so basically about $130 USD shipped for either set.
Really only worth getting the shims on Blackhawk if you order some pads as well to save on shipping.
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Good to know for the pads. The ELIG titanium shims (I got front and rear shims) were $153 + $56 shipping from Australia. Let us know how the dust is with the new pads.
 
#67 ·
Toome said:
Good to know for the pads. The ELIG titanium shims (I got front and rear shims) were $153 + $56 shipping from Australia. Let us know how the dust is with the new pads.
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This is the description along with ratings of initial braking, less dust, less noise, feel of pedal, abrasion resistance, and contrallability. These pads graded best in less dust, abrasion resistance, and controllability. Not listed as a track pad, but listed as a street pad for streetuse and windy roads (which is where i will be doing most of the driving anyways). Probably fine to use for occasional track use. Ill do some performance comparisons (along with dust producing conparisons) with the stock pads (as those seem to be fine for occasional track use).
If I feel as performance did not suffer from the brake pad switch, then ill use these for the occasional track days. But if I feel performance was sacrificed for less dust when compared to the stock pads, ill simply just swap back out to stock pads when going to the track.

 
#68 ·
Tokyotexan said:
This is the description along with ratings of initial braking, less dust, less noise, feel of pedal, abrasion resistance, and contrallability. These pads graded best in less dust, abrasion resistance, and controllability. Not listed as a track pad, but listed as a street pad for streetuse and windy roads (which is where i will be doing most of the driving anyways). Probably fine to use for occasional track use. Ill do some performance comparisons (along with dust producing conparisons) with the stock pads (as those seem to be fine for occasional track use).
If I feel as performance did not suffer from the brake pad switch, then ill use these for the occasional track days. But if I feel performance was sacrificed for less dust when compared to the stock pads, ill simply just swap back out to stock pads when going to the track.

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I have a set of Pagid RST-3’s for the track. The stock pads are ok, but not worth swapping back in for track imo.
 
#70 ·
ND4SPDR said:
How do they feel before/after a swap? I wanna put some RSL29s on for track duty but I don’t like the idea of re-bedding them on the street
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They felt great after about a day or two of the rotor surface mating to the new pad. I just went out at 1am and bedded them on the street following the processes recommended by pagid. Wasn’t too hard. Just a few very hard high speed stops. Went back to stock pads day after track day and feels fine. Still driving on those till springtime
 
#72 ·
Smoovy said:
Can you confirm these fit? I see another set of brakes on that site that had something like "RC-18 inch wheels" threw me off but the part number is still EP558/EP559
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I was told EP558/559 are the correct part numbers. I should be installing them today, at least that's the plan.
 
#73 ·
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Update after two track days at summit point main: Still melted the dust boot seals with the TI shims. For next track day I will try installing the CE brake ducts. The brake fluid on the shim also concerns me. Going to have calipers rebuilt soon just as a precaution.
 
Discussion starter · #74 ·
Toome said:
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Update after two track days at summit point main: Still melted the dust boot seals with the TI shims. For next track day I will try installing the CE brake ducts. The brake fluid on the shim also concerns me. Going to have calipers rebuilt soon just as a precaution.
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my calipers reached the same temp with the ti shims, not sure if you mentioned it before, but are you able to do a cool down lap? even around the paddock? if i havent mentioned it here, i usually do a parade lap around the paddock. until oil temps are below 210F and hopefully that sheds heat off the rotors too. bc if they just sit after a session, the heat soak will do the most damage
 
#75 ·
Toome said:
View attachment 23811 View attachment 23810
View attachment 23812
Update after two track days at summit point main: Still melted the dust boot seals with the TI shims. For next track day I will try installing the CE brake ducts. The brake fluid on the shim also concerns me. Going to have calipers rebuilt soon just as a precaution.
Click to expand...
black86 said:
my calipers reached the same temp with the ti shims, not sure if you mentioned it before, but are you able to do a cool down lap? even around the paddock? if i havent mentioned it here, i usually do a parade lap around the paddock. until oil temps are below 210F and hopefully that sheds heat off the rotors too. bc if they just sit after a session, the heat soak will do the most damage
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Yup. I did a full 60-70% cooldown lap after each session. I also would drive around the paddock till oil temps were below 220 and idled the car in my pit space until temps were below 210 and then shut the car off.
 
#77 ·
#78 ·
I’ve been looking into getting some Ti brake shims for the brake heat issue, and while looking around I stumbled upon these carbon fiber shims on a GR Yaris forum. A few people got them and have said they’ve held up well. Technically carbon fiber is an even better insulator than titanium so I wonder if these would help or would it be a negligible increase in efficiency? They’re around the same price too and they’re for front and back

www.tegiwaimports.com

Hel Performance Carbon Fibre Brake Pad Shims Toyota GR Yaris 20+

HEL Performance have pulled out all the stops when developing their carbon fibre brake pad shims. They've used the finest carbon fibre, combined with an exclusive thermal-resistant resin which cures an attractive deep orange against the black fibres.
www.tegiwaimports.com www.tegiwaimports.com
 
#79 ·
NickW3 said:
I’ve been looking into getting some Ti brake shims for the brake heat issue, and while looking around I stumbled upon these carbon fiber shims on a GR Yaris forum. A few people got them and have said they’ve held up well. Technically carbon fiber is an even better insulator than titanium so I wonder if these would help or would it be a negligible increase in efficiency? They’re around the same price too and they’re for front and back

www.tegiwaimports.com

Hel Performance Carbon Fibre Brake Pad Shims Toyota GR Yaris 20+

HEL Performance have pulled out all the stops when developing their carbon fibre brake pad shims. They've used the finest carbon fibre, combined with an exclusive thermal-resistant resin which cures an attractive deep orange against the black fibres.
www.tegiwaimports.com www.tegiwaimports.com
Click to expand...
Carbon is a great insulator but not necessarily the best for dissipating heat. These did well for me
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#80 ·
I'm not sold. It would be an interesting experiment, though. Disposable, maybe?

The carbon in those shims isn't the concern; carbon is pyrolyzed at thousands of degrees F, sometimes upwards of 6000°F. The problem with heat is always down to the resin. Hel claim the resin is thermally resistant to 752°F, which is extremely high for a laminating resin or adhesive, but that threshold is easily exceeded at the track. Once the thermal limit (Tg) is exceeded, the resin is no longer rigid. It will soften, or sort of rubberize, and deform. Any form of stress (*such as being compressed by the edge of a piston) will causes micro-delaminations within the fabric and then, well they're trash at that point.

Now exactly how much of that heat transfers from the pad face (1200°+F source) to the back of the pad I'm not sure, but I don't see that being a 500°F+ difference...

Carbon brake rotors as a comparison, are manufactured using an entirely different process than fabric lamination, so the thermal envelope is entirely different.
 
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