Dust Boot Cooked!!

[FL5golfer]

Was inspecting my brake pads, and this is what I discovered. Dust boots are cooked after multiple track days. Any of you know how to replace these?

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[J_D]

Buy part from Honda, should be standard procedure as per any calliper rebuild

 

[Rhorn]

Been awhile since I've worked on my brakes but I'm pretty sure card id sells brake hardware that has dust boots. I remember buying a kit back in the winter earlier in the year

 

[azev]

you can also look for an aftermarket higher temperature boots that will last slightly longer than stock boots.

 

[apl360]

Savage geese had this issue on their fl5 too. Their solution was just to buy a big brake upgrade front and rear. It included calipers and rotors for sure. Probably includes lines and brackets too?

Hopefully it’s a doable option. The whole thing sounds super expensive

it was ap racing, forgot to include the brands name sorry

 

[Djseto]

I cooked mine at the track. Replaced them with ones I got on rock auto. Cooked them again at the track.

Now I don’t bother. You can get the high temp silicone one and I’ve been told titanium shims help but then you put the heat back into your pad so pick your poison.

The high temp ones are rated to 450f. The caliper temp sticker on my calipers said they hit about 430-440F so not sure the high temps will last much longer either.

 

[azev]

If you dont want to keep replacing boots then the only options is to replace the caliper with a model without boots.

Honestly I've seen people on track day with completely torn brake caliper boots from the year before and it seems to be ok.. Idk how bad it is running without boots for an extended period of time.

 

[iforgettopee]

get titanium shims and keep sending it - forget about the dust boots lol
either way you'll have to rebuild your calipers regularly from all the track days you're doing

 

[lightningteg]

If you dont want to keep replacing boots then the only options is to replace the caliper with a model without boots.

Honestly I've seen people on track day with completely torn brake caliper boots from the year before and it seems to be ok.. Idk how bad it is running without boots for an extended period of time.

Probably more of an issue for a DD. Dirt/water/grime in the piston bore causes rust and eventually seize caliper.

 

[azev]

Probably more of an issue for a DD. Dirt/water/grime in the piston bore causes rust and eventually seize caliper. Sponsored

How about those calipers that uses no boots from the factory like AP racings?? what do they do differently so that it is ok not to use the outer boots ??
From my observation the main difference is that they replace the boots with another internal seals, and that the piston is made of stainless rather than aluminum, but both are "rust free" material for the most part.

 

[lightningteg]

How about those calipers that uses no boots from the factory like AP racings?? what do they do differently so that it is ok not to use the outer boots ??
From my observation the main difference is that they replace the boots with another internal seals, and that the piston is made of stainless rather than aluminum, but both are "rust free" material for the most part.

That’s what you pay for with aftermarket. For a mass produced vehicle I can’t see them spending the engineering to do that when a boot works 95% of the time and is cheaper / easier to assemble based on existing processes

 

[AZCWTypeR]

If available, silicone dust boots should withstand 450 degF for a very long time. Longer than most of you will own this car. I'm speaking from decades of jet engine experience.

 

[Djseto]

If available, silicone dust boots should withstand 450 degF for a very long time. Longer than most of you will own this car. I'm speaking from decades of jet engine experience.

I have caliper temp sticker on my front OEM calipers. After a weekend at VIR, it maxed out at about 430F. Being 20 degrees off from the max isn't a lot of leeway. That being said, here is the link:

https://racingbrake.com/search-results-page?q=db-40

 

[azev]

Back when I had my GT350 I tried using those blue silicon boots and it still barely last around 2 track days before it start cracking and essentially get disintegrated soon after. My brother E46M3 is in a similar boat.. basically if you track your car often and hard on the brake, the brake boots becomes parts of the consumables.

 

[MooMoo]

How about those calipers that uses no boots from the factory like AP racings?? what do they do differently so that it is ok not to use the outer boots ??
From my observation the main difference is that they replace the boots with another internal seals, and that the piston is made of stainless rather than aluminum, but both are "rust free" material for the most part.

AP makes stuff for racing, they also assume you are going to rebuild the caliper more often which is what you do if you are actually racing,

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