Toyota GR Yaris BRAKE FAIL | 4K
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- Опубликовано: 25 июл 2024
- PLEASE NOTE:
I MADE TWO (2) MAKE MISTAKES IN THIS VIDEO, AS FOLLOW BELOW, SORRY FOR THAT!
1) The installation of Pistons is done with the externally machined grooves on the outside (towards the pad), not as shown in the video. The machined holes are for heat reduction, letting air thru.
2) Thanks to the input of a fellow subscriber (@aurickgo2746) it appears that the "Revolution GR Yaris" driven by NOB was, at the time of crash, using AP Racing calipers. Still causes of both crashes occurred on that car are to be clarified.
--I'm sorry for these mistakes: I always work very hard to bring you the best information, but mistakes can happen, especially when working on a tight schedule. This said, I will ALWAYS state if there is something wrong.--
We have discussed about brake pads, discs fluid and lines, but today is the time to talk about real world Toyota GR Yaris BRAKE FAIL and How to Prevent it.
Rest assured that if your car is stock and you don't track it frequently on very "brakes intensive" tracks, you WILL BE OK!
Instead, if you have upgraded pads and discs, and not as much on the cooling side, problems could come your way.
BCB Brake has built a very interesting kit, already proven by many, that comprehends silicon dust boots with much higher temperature ratings and special design Stainless Steel brake pistons and flush pins. We will compare them to the stock units and spot the differences, while waiting to install the whole kit on my GR Yaris.
VIDEO OF NOB BRAKE FAILURE (min 19:15): • 〈ENG-Sub〉GRヤリス vs.シビック...
LINK TO PRODUCTS: / bcb_brake
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/ @ajclubsport
Contact me: adriano.piras1@gmail.com
TIMESTAMPS
00:00 - Intro
00:53 - Brake failiures on GR Yaris
02:37 - BCB Brake Seals & Dust Boots Vs OEM
08:30 - BCB Brake Pistons Vs OEM
13:25 - When is this kit necessary?
16:14 - Conclusion
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Авто/Мото
Wanted to see someone discussing this topic for so long! Thank you very much. Very informative and looking forward to watching your coming videos❤️🔥
Thankyou!! My pleasure: pleasure Subscribe and Share!
Thanks AJ once again for this very informative vidéo.
You are very welcome mate, thankyou for supporting!
Titanium brake shims are working well for me on track at the moment. They help reduce heat transfer from the disk and pad to the calliper.
Yes, they are a very solid first step, and I use them too!
Hi AJ,
Not trying to be an asshole here, but the ORings run through the piston body not in the front, the calipers have grooves inside for this rings, where you are putting the rings is where the dust boots go. Also the pistons are pushing the opposite side you shown, so the original ones push with the empty side and go flat not with the side that has a smaller bump. Also a more cost effective solution would be put carbon brake shims IMHO.
Just making sure that everyone has everything right, and if someone tries to DIY it with this information and install it as you shown, he will go without brakes for sure.
Thanks a lot for your efforts and video as usual ❤
Yes, you are right and I wrote this first in the description.
Problem is when you don’t have all the parts on the table and time is limited this can happen 👍
Thanks for this useful video!
I did one track day in my stock GRY (apart from braided lines, RBF 660 fluid), then another TD with titanium shims, and finally one more TD with RS3 air guides for brake cooling.
Unfortunately I've noticed one dust boot starting to disintegrate!
I'm always quite cautious with braking, hard and late for the shortest amount of time possible to prevent overheating but I guess it wasn't enough. Glad there's a solution for stock calipers!
I noticed BCB also do a brake booster upgrade, what would be the benefits of this?
@AmjadJDM yes I have: the benefits, as they state, are of achieving a less servoed brake pedal, which implies more pedal force to brake. This allows for improved control, like you would find on all Porsches from factory. Installing this unit would be best with higher friction brake pads, to your liking
@@AJClubsport this sounds like quite a nice upgrade! Noone likes a long pedal 😅
@AmjadJDM yes, it is very interesting!
Interested in people’s experiences regarding carbon/titanium shims - they do reduce heat transfer, but I’m also mindful that the air around it is also very hot, and it’s not something that shims can block, so the usefulness of sandwiching the brake shims maybe debatable, plus its impossible to get them in with a new set of pads, at least in my experience!
Hello there,
The shims are working for many, including me, but the point is that you should add cooling, but secondary ducting and removing/cutting the dust plate
hi, good demonstration and info
i think you actually mistook the two sides of the piston though, the flat side usually goes inside caliper. otherwise you would need a lot more fluid to fill the cavity and also that way the pad would, like you mentioned, not be flat against the piston.
Yes mate, thankyou for pointing that out, I had stated the mistake in the description!
At time of recording I didn’t have nor the calipers nor instructions with me!
Great info and solution again AJ, it gives people multiple solutions for stock calipers/brakes dependant on use.👍
For me the HEL carbon shims and these upgraded seals on stock pistons would be ideal, steel bleed nipples as well do they recommend
a good anti sieze compound for the bleed nipples, can't be a bad thing ?
Regards Russ 🙏
If you use just a smear of high temp grease on the fillets, having the steel units it would never bond!
Thanks for this overview! Useful piece of kit for sure. Although I would like to point out that the Revolution GR Yaris you were pertaining to that crashed in Tsukuba was running a set of AP Racing Calipers, not the stock Advics calipers.
The car actually crashed twice in the same corner, with the most recent incident having Masahiro Sasaki (Gazoo Racing works driver) behind the wheel. He criticized the safety risks the vehicle compromised to reduce weight, so Revolution decided to retire the car for now.
Really mate? Are you sure he didn’t have the non competition calipers in grey?
Thankyou for the feedback anyways!
@@AJClubsport this is the most recent video i’ve found on it: ruclips.net/video/HftNO54USXI/видео.htmlsi=NoNh93Y4eYg9TAcp
Around 16:40 mark the brakes are indicated as “AP343 & Endless”, I’m assuming this is their 343mm brake kit with Endless pads. The video is dated 8 months ago but the incidents with their GR Yaris happened towards the end of 2023. Still curious how they were able to replicate the accident twice on the same corner with two different drivers though.
You are totally right, my bad.
Also, I made another mistake in this video, and got the piston install direction wrong. Am writing a disclaimer note to clarify these two points now.
Thankyou for your precious support, guess running three jobs makes me rush a bit too much lately… always difficult when you don’t have all the parts in your hands!
Thanks
Welcome
Had this issues with burned piston rubber. Changed under Toyota guarantee + HEL carbon shims added. Should be fine now :)
Great to hear you didn’t have issues with it, the Oring was doing its job!
So to clarify, is this a cost effective solution before going to a big brake kit? Is it available in titanium other than steel and if affirmative, does it make sense to go titanium?
This solution is to convert the STOCK calipers to Race Mode
As said in the video, certain people are getting failures on the stock calipers, therefore this is a solution to convert the STOCK calipers to a motorsport grade mechanics and hydraulics.
Scusa se ti scrivo in italiano, secondo te i dischi anteriori della GR sono da invertire lato destro con il sinistro? Grazie per la tua divulgazione 👍
Grazie a te Alessandro,
Sono da invertire se ti serve che raffreddino di più, inoltre lo farei solamente se non sono molto consumati ed in occasione del cambio delle pastiglie
looking forward for follow-up video after literally "break-in" at a track.
btw. those are more quad rings than o rings. just a detail, no offence.
Yes they are: this is the difference in having to make the content on a tight schedule and watching it. Sometimes there may be some minor inaccuracies
Thank you AJ. My brakes have overheated once. First time on ring and just beginer fears.
I was always aware people adding shims behind their pads, but thought it could not help using titanium as surly thst passes the heat well. Now I see carbon ones that probably keepinh the heat in the pads, probably not good.
I was thinking taking your sdbice RP1. Any thoughts?
Yes and Yes: the HEL carbon shims and EBC RP1, from various reports among which Import Racing, that gmtracks Hockenheim a lot. BUT additional cooling is always necessary, and this BCB kit for peace of mind mate
where is their shop? it might be good upgrade, at least those bleeding nipples.
Yes, you can contact them direct on Instagram
@@AJClubsport cheers!