Got a track related question? I'll try to answer.

[CSG Mike]

Originally Posted by Apex_BRZ

Thanks, I'll give that a shot.

In the meantime...what do I do about the pulsing? Will a bed-in process shave it nicely and lay on a new, even layer of material on the rotor surface? If it's just pad material, it seems to me I only need to do that to fix this for now (while I work on another solution for the next track day).

Also, this is the first track day I ran the Titanium shims. My guess is they are doing more harm than good by trapping the heat in the pads. Toss them?


EDIT: Also, for anyone NOT doing the "pedal dance"...DO IT. I refused to do it for the first session at RA thinking it wasn't necessary. But during the first session, going down the hill into turn 5, I found out quickly that just having it off by holding the button down is no good. That bumpy hill when being hard on the brakes kept making the stability control flash at me, and every time it did it the back end kept wanting to come right around. Not a great feeling. Doing the pedal dance changed everything, it was consistent, predictable, etc.

It's most likely an uneven deposit/transfer. If you keep driving, it'll go away.

Pads also pulse when they're badly faded on track.

If you REALLY want to, you can take your rotors off, take it to your local auto parts store, and have them turned (lathed) so that the surface is flat again, but IMO, it's not necessary unless the pulsing is unbearable.

[Apex_BRZ]

Originally Posted by CSG Mike

It's most likely an uneven deposit/transfer. If you keep driving, it'll go away.

Pads also pulse when they're badly faded on track.

If you REALLY want to, you can take your rotors off, take it to your local auto parts store, and have them turned (lathed) so that the surface is flat again, but IMO, it's not necessary unless the pulsing is unbearable.

It's not that bad, I'll let it sort itself out. Thanks.

[gramicci101]

Originally Posted by Apex_BRZ

Also, this is the first track day I ran the Titanium shims. My guess is they are doing more harm than good by trapping the heat in the pads. Toss them?

The shims act as a heat shield between the pads (heat source) and the fluid, to keep your fluid from boiling and becoming useless. This is a little bit less easy to fix trackside than replacing pads is. You want the heat to go from the pads to the rotors, because the rotors are a bigger heat sink and have vanes designed to dissipate that heat. The brake fluid does not.

Some people say they make a huge difference, others say they've not done anything worthwhile for their brakes. Since you already have them, there probably isn't any harm in leaving them in.

[YouShallKnow]

Hey Mike,

After switching to xp10/xp8 for pads I'm starting to consider my options for when my stock rotors give out.

I track the car but only for time trials, so the most I've ever done is around 7-8 laps.

The question is, should I upgrade the rotors and keep the stock calipers with racing pads for track duty and OEM/OEM+ pads for street duty (W1 right now), or should I bite the bullet and just go BBK.

I ask because it seems like the stock rotors do such a good job with racing pads, a BBK might be unnecessary.

I've seen you recommend a BBK as a cost saving measure long-term since pads are cheaper and rotors wear less. Is that the main reason to upgrade or does a BBK really improve braking enough to justify the investment?

I missed you guys at the last couple 86 cup events, but I'll see you at Laguna Seca!!! Can't wait.

[CSG Mike]

Originally Posted by YouShallKnow

Hey Mike,

After switching to xp10/xp8 for pads I'm starting to consider my options for when my stock rotors give out.

I track the car but only for time trials, so the most I've ever done is around 7-8 laps.

The question is, should I upgrade the rotors and keep the stock calipers with racing pads for track duty and OEM/OEM+ pads for street duty (W1 right now), or should I bite the bullet and just go BBK.

I ask because it seems like the stock rotors do such a good job with racing pads, a BBK might be unnecessary.

I've seen you recommend a BBK as a cost saving measure long-term since pads are cheaper and rotors wear less. Is that the main reason to upgrade or does a BBK really improve braking enough to justify the investment?

I missed you guys at the last couple 86 cup events, but I'll see you at Laguna Seca!!! Can't wait.

A BBK also reduces unsprung weight and rotating mass, so you WILL get a small performance improvement, but it's not a good return per dollar spent in that area. You'd get a larger improvement with light wheels for less money.

How many days are you currently getting out of your pads?

I highly recommend you go to a square pad setup.

[YouShallKnow]

Originally Posted by CSG Mike

A BBK also reduces unsprung weight and rotating mass, so you WILL get a small performance improvement, but it's not a good return per dollar spent in that area. You'd get a larger improvement with light wheels for less money.

How many days are you currently getting out of your pads?

I highly recommend you go to a square pad setup.

First day I used them almost had no wear at all, second time I used them was Sunday at chuckwalla and I went through about 1 mm per pad is all. But I only did about 14 laps all day.

This is my first set of track only pads. At this rate they'll last quite a while.

If I'm braking well they should only last about 3 track days right?

Also, what's the concern about running less aggressive rear pads? Does it shift the bias to the front too much? I haven't had any issues, but then again I'm not braking like the big boys yet.

[CSG Mike]

Originally Posted by YouShallKnow

First day I used them almost had no wear at all, second time I used them was Sunday at chuckwalla and I went through about 1 mm per pad is all. But I only did about 14 laps all day.

This is my first set of track only pads. At this rate they'll last quite a while.

If I'm braking well they should only last about 3 track days right?

Also, what's the concern about running less aggressive rear pads? Does it shift the bias to the front too much? I haven't had any issues, but then again I'm not braking like the big boys yet.

You nailed it.

[ZionsWrath]

Check your time trial rules as well. Sprint kit may cost you points.

[YouShallKnow]

Originally Posted by ZionsWrath

Check your time trial rules as well. Sprint kit may cost you points.

Bbks are free in the 86 Cup! But I should probably get the most out of my stock setup before I shell out $2,500.

[ZionsWrath]

Originally Posted by YouShallKnow

Bbks are free in the 86 Cup! But I should probably get the most out of my stock setup before I shell out $250.

I would like an 86 cup on east coast, for now im just trying to get seat time and learn the local tracks

I have sprint kit and after 5 days I still got a ton of pad left on my XP10 pads. I used more than half XP10 on stock caliper in 2 days before that. I'm just HPDE novice though, not done any TT or even data logging. Soon

[CSG Mike]

Originally Posted by ZionsWrath

I would like an 86 cup on east coast, for now im just trying to get seat time and learn the local tracks

I have sprint kit and after 5 days I still got a ton of pad left on my XP10 pads. I used more than half XP10 on stock caliper in 2 days before that. I'm just HPDE novice though, not done any TT or even data logging. Soon

Want to organize one in your area? The license for the rules and name are free to anyone willing to organize a local series.

I won't lie; it's a lot of work.

[Dave-ROR]

Originally Posted by CSG Mike

A BBK also reduces unsprung weight and rotating mass, so you WILL get a small performance improvement, but it's not a good return per dollar spent in that area. You'd get a larger improvement with light wheels for less money.

How many days are you currently getting out of your pads?

I highly recommend you go to a square pad setup.

Yeah the real reason to use a good BBK like the Sprint kit is to reduce consumable cost and gain lifetime on the pads and rotors more so than any performance improvement (beyond fade resistance/heat capacity).


I'll be back in 6 months to check for replies

[CSG Mike]

Originally Posted by Dave-ROR

Yeah the real reason to use a good BBK like the Sprint kit is to reduce consumable cost and gain lifetime on the pads and rotors more so than any performance improvement (beyond fade resistance/heat capacity).


I'll be back in 6 months to check for replies

HE'S ALIVE!

[King Tut]

Originally Posted by Dave-ROR

Yeah the real reason to use a good BBK like the Sprint kit is to reduce consumable cost and gain lifetime on the pads and rotors more so than any performance improvement (beyond fade resistance/heat capacity).

I'll be back in 6 months to check for replies

You selling that BRZ for $10k yet? I will throw a new battery in it.