2023 GR Corolla | Exhaust and Cooling Issues Addressed
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- เผยแพร่เมื่อ 15 ก.ย. 2024
- We dive into some of the glaring issues we uncovered on our first track event with the Toyota GR Corolla. With the AWD system overheating and limiting our track time we search for ways to make this car take the beating we are going to throw at it.
For more on the finer details of the GR all wheel drive system visit Engineering Explained and specifically this video here: • Toyota GR Corolla's Br...
Thank you to APEX'i and BSide Fabrication for all the help and support as we dive further into this new-to-us chassis.
#toyota #grcorolla #gryaris #trackday #racing
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I have a GRC and you guys keep me so hyped up after my purchase. Thanks for all the knowledge ya'll give out.
Awesome! Thank you for the support. We have another video coming soon about the Bride Seat install! Thank you for your support!
Appreciate you guys keeping us updated!!! And I’m loving how in-depth you guys are going on this build! If you guys happen to be free Sunday morning and are in the Anaheim area I’d love to meet you guys and see the car in person! The cars and coffee classics In Anaheim is happening this Sunday morning. No doubt you guys would win best in show!!!
We have been discussing this! If you see us there come by and say what's up!
You guys just earned yourselves a new subscriber. Love the in depth stuff on the GRC. I just picked mine up on Monday.
Heck ya! Thank you for the support! We are loving the GR! We are excited for you to finish your break-in period! Enjoy!
Great video! I like that you are covering exploratory brainstorming. I'm a sucker for this nerdy stuff.
Yah, some people don't realize what goes into making something work. After the brainstorming usually comes a lot of failures. But it's all pretty fun along the way!
This is going to be another dope build from the Just Driven crew 💯
Thank you so much!
It could be an electrical gremlin. I was at uni the other day on a pretty cold day (around 4 degrees).
Picked up my car and drove home. 5 minutes out of the parking mode it went into 2WD mode stating that it overheated.
That's crappy! We are for sure beating up the car a bit trying to find any potential weak points for our track days.
Im a Toyota master tech and I also own a GR Corolla. get a hold of me, maybe I can help you with some more info
How about share it so we can laugh at your incredibly slow but expensive purchase.
@@Uno_Floyddhow bout you shut up with your clapped out barely running wanna be relevant supra?
@@Daks274 I gapped an new cheb Camaro last night before it started raining. Be took off then I caught him by the next section of "track" my car has 130kmile v8. I no longer have a supra. I have the big boi.
Sounds like someone who drives an auto v8 in straight lines and thinks he's a driver.
@@Uno_Floydd redline reviews got 4.9 0-60. Pretty good for a manual boosted 3 cylinder.
Anyone else hear the kim possible notification in the background at 9:15?
Thought i was insane
We also heard maybe it was Power Rangers? Can anyone confirm? Inquiring minds want to know.
If there is room around the clutch pack you could have an aluminum heat sink designed to wrap around it and bolt it on to help pick up the heat from it and release it in the air on top of your ducting you planned. Ķind of like an RC car electric motor sink.
We discussed this also. Wait till you see what we came up with. It's pretty sick.
Awesome cars, sadly we dont get it here 🇬🇧, but we do get the GR Yaris which I have. Love it on road and track.
Heck yes! We would trade our GR Corolla for a GR Yaris without batting an eye.
For the diff coupler, it wouldn’t be that hard to tac on a bracket and mount some kind of metal fin and shield to keep it cool. Apexi should 100% incorporate that into any aftermarket units. It seems like such an easy solution I wonder if this thing was engineered to heat up and disengage for long term reliability reasons? Pure conjecture.
We've been discussing some options similar to this over the last couple of weeks. We have some pretty cool tricks coming.
A friend of mine has one he has been tracking and so far hes done the exhaust wrap but he over heats it in any mode he is running 265 r comp tires though. He said even on stock 235s he would get it to over heat on track in any mode though....
Well, hopefully he can check out our journey and we will do all the modifications to keep the overheating down. We will figure out what needs to be done to get this car to take some abuse on the track!
Grc gang ftw!
🤘🏼
That’s interesting. It sounds like you may want to increase cooling capacity for the clutch pack assembly.
Time to get creative.
I can think of some fabricating options.
1. Air cooled option. You need to increase surface area to dissipate heat. Maybe add fins or a heat sink
2. Electric option. Rig up your own temp sensor to the case, along with one or two mini fans (computer server fans?)
3.Water option. Fabricate a water jacket to mostly or partially encase the unit. Then you have the option to create a standalone cooling system for it, if needed.
Those are all great ideas. And a couple of them (didn't really think of the water jacket) were brought up with BSide Fabrication when building parts for it.
Glad to know for my gr Corolla
We have new exhaust options and some aftermarket seats coming up soon!
@@JustDriven great I’ll have to look at that
its not a matter of cooling the clutchpack, its a matter of adjusting the software limits on the temperature sensor/ecu. its being way too overprotective, the limits simply need to be raised in software.
We discussed some trickery with the sensor but we want to work within the parameters of the Toyota framework to start. We might have to wait on the software situation until we can find someone who can adjust those or until we just swap the ECU.
@@JustDriven from what I know, Toyota is aware of the issue and it will most likely be addressed with a recall and firmware update at the dealership. This is educated speculation, but I believe that's the correct way to move forward because it's kind of a glaring issue and people are cancelling orders and backing out of deals because of it.
Steady in the event of wild races or racing
Steady indeed.
Drill two holes in the diff cover, weld some bungs, add a small pump and oil cooler and your done..
If your truly building a "track car"
We have a couple plans before we start drilling into the diff cover.
Sealed unit? At least Haldex on VW, Audi, Volvo, etc. have regular service intervals.
Maybe Toyota sees more benefit in swapping the whole unit? Cost or ease of serviceability?
I'm even excited!
Thank you!
Does this finally solves the clutch pack AWD overheating issue on heavy track use? Thinking of applying it to my GRC?
It helps but does not fully alleviate the issue. It is ongoing.
@@JustDrivenwill upgrading the stock LSDs to Cusco Type RS LSDs along with the Cusco Front Diff Cover completely solve the overheating and durability issues?
It's unlikely going to solve the issue.
@@JustDriven ahhh ok 👍. It’s pretty much inevitable then.
Use some of that space gained with the new exhaust to build a metal heat shield between the exhaust and clutch packs. Mount it with some of the case bolts or something like that.
We have something very similar planned.
Newish to the channel. Hopefully next video will have more scenes of fixing the problems. I wonder if the Morizo Edition has some differences or solutions to the described problems? If a car marketed like the GR products can't make it through a 20 minute HPDE session without overheating...
We have some more videos coming with some tricks to get this car to stay cool on track. It already looks cool now it's time to be cool too.
Seems the saga continues to make this do what it was advertised to do stock.
I'm even more disappointed to see the Corolla GR overheat the drive train during cannyon driving ON A COLD DAY. That's quite sad. Now, "it needs" suspension, seats, exhaust, AND to find a way to cool it down... smh.. That's frustrating, honestly.
I am interested to see where this journey goes.. 😁👍
You shouldn't be too disappointed. This car is way better than advertised. It explains the popularity of the car so much that Toyota is ramping up production. We are beating this car up a little bit. We need to know all the shortcomings so we can improve the vehicle for our track days. Daryl was working on seeing if he could get the clutch pack to heat up. We have lots of tricks to try out and see where this new to us chassis goes.
@Just Driven I shouldn't be too disappointed you say, yet it doesn't do what it's advertised to do 🤔
Toyota is ramping up production because they didn't make too many in the 1st place, to be honest.
You say it's" popularity " has them selling fast. No, I think the low numbers and extremely high hype of these cars have them selling fast. Not many reviewers are doing what you all are doing, and that's pushing its limits as advertised. Most reviews are of someone doing a walk around of it or a spirited drive for 5 minutes . That's not an honest review. Personally, I feel that seeing you all drive it as it's advertised truly shows its shortcomings, and there are several that you are showing us now. Not only that, but it didn't take any time at all for them to show up. I wonder what else will pop up 10 track days from now, etc... You all are doing just what many of us plan to do with it. (Or planned to do with it until I saw your videos), and that's comute in it and really ring it out on the track for track days. This car honestly fails at that as you have shown, time and time again. Your driver even over headed the diffs on a cold day canyon carving.
I am truly interested to see how this unfolds. Sadly, my money is on hold for maybe an upgrade model in a year or so, or maybe just go in a completely different direction.
i want one. (acid test over)
James!!!!!!!! It’s Mikey!!!!! How you been?????? Reserved my GR today!!!!!!!
Heck yah! Congratulations!!
Great video, thank you and very insightful. Curious, does the exhaust pipe get so hot because of low grade material? Is there a different material that resists heat better?
Thank you. Yes, titanium dissipates heat, but the issue doesn't lie in in the exhaust. We are developing the exhaust to help alleviate the issue of the rear end overheating.
Thank you for your reply, I appreciate it.
Id say magnaflow exhaust. The read differential really needs some cooling ducts.
Yah we designed an exhaust and added some cooling ducts.
If this is already an issue for GRY, the problem is going to get worse in the GRC (heavier car and more torque from the engine)
We didn't want the GRY issue to stop us from experiencing a completely new platform in the US. We don't regret it. This car is so much fun!
9:16 oh god, childhood memories. 😆
At the track?
How did Toyota engineers not run into these diff overheating issues🤷🏾♂️
Maybe they didn't push them like we do? Honestly, we just don't know.
I'm sure they did. They just decided it didn't make financial sense to fix it.
@@jaball77 they did, chief engineer said said they added more airflow to try and curb the issue, but it definitely didnt
What if you just replace the ITCC with something without clutches that just makes it 50:50 all the time.. is that the ultimate solution?
It would be great if someone offered that, and if it didn't then cause the ECU to go bananas.
@@JustDriven yeahhhhhh that would likely be a problem
They should check with a meter how hot that exhaust pipe gets. I would be surprised it gets that hot.
We have plans in the near future to get more accurate readings on the exhaust temps. Between the exhaust and the strain on the clutch packs it's all bad news for cooling.
What do you guys do, are you guys like a shop that build projects cars too? Reason I ask is cause a got a couple of Toyota projects in hand that i wanna have done properly. I brought it to one of the Shop down in LA and all he does is to low ball the quality of everything I’ve ask him to do with a price of an arm and a leg! So yes I’m looking.
We work with studios and build projects for ourselves. We are currently not taking outside work. What are you looking to have done? Maybe we can aim you in the right direction.
Id keep it three exist for the uniqueness of it but extra sound
Not a bad idea!
Keep Up The 👍👏👍👏👍👏👍👏👍👏 Work 🏆
Thanks! 💪🏼
6:52 Me as an European: Not the same concern as me, at that temperature I'm literally boiling alive.
Yah, don't take the AC out!
Just make some side exit exhaust and which one of you guys have the Kim Possible notification at 9:17 lol
Side exit as in...under one of the passenger doors? Or right or left rear side exit? The message tone was someone at Apex'i. And we are all wondering why you knew that? haha....
@@JustDriven under the passengers, I think it’ll be an interesting look. KP was a piece of the childhood, didn’t think people had it as a ring tone these days lol
We never even really thought about moving it under the passengers. It would surely leave the rear diff and clutch packs out of the exhaust heat. As for the Kim Possible ringtone...? It would seem you are not the only lover of the cartoon!
Pretty disappointed in how underwhelming this car is. It’s worse than a 20 year old Evo.
It was never meant to be matched up against an Evo. It's a lot of fun. It is a new chassis to us so we are almost hunting for shortcomings so we can improve the fun factor of this lil' beast.
Yeah, my 2016 WRX will kick it's butt, for less than $35,000!
@@patrickodonnell3260 ugly car though 🤷♂️
Yule brenner guy is funny
Haha! We will be calling him that as a new nickname around the shop. Thanks for that.
Once up-on a time, Padmé was on a Formular 1 circit, but unfortunatly, she becaum a vicktum of Mad Max. She tryd to escaip on Ruot 666 in a 2000 hp Supra, bekaws she herd it was the fastist car arownd. The earf was gettting hottrr and hottrr, and she new she had to leave befor it was too late.
As she was driving, she met a 95-year-old Telsa invister who was ridiing in a self-drayving car. He was verry ritch and offored to mary her so she could inherit his fortune when he dies. Padmé thoht it was a good idea and agried to marry him.
But even tho she was maryed to a ritch man, she stil had feelins for a Chad who was moor interested in his poster of a Corolla GR than her. She was disapointed that he wouldn't commit to her and wanted to be with the poster instead.
In the end, Padmé was happy with her ritch husband and they livd happily evr after.
Padme sounds like she should have followed her heart to the land of 3 cylinders and all wheel drive blasts through the countryside.
Great car 👏🏻
Yah it is. We love it!
2025 corolla gr is ousting 30 70 and doing 40 60 wonder why?.
Likely from the overworked clutch pack issues we reported early on with our project.
“Apex” not “Apex’i”. 🤦🏻♂️
We want you to be right, but owner of US and Japanese branches refer to it as "Apex'i." A couple of the guys here agreed with you, but we were corrected by US owner of Apex'i.
N1 for me
You and James. That's two votes. haha...
Please do not put the exhaust in the ceter! Love the vids
What would you do with it?
@@JustDriven im taking delivery when summer comes, prob gonna have to keep it stock, would rather throw exhaust on the 5.0 loll exited to see yours tho!,
I just dislike centre exhausts! haha
3 out
okay.
Limited production and dealer markups make this car and the type R completely over priced and laughable! Only fools are willing to pay over MSRP for these cars. These car's ain't collector type cars! Buy a hyundai elantra n at MSRP or better yet a Tesla for less money and way better performance!
The people purchasing these cars are the ones who really covet them. Something new and exciting. People willing to pay the price to have the chassis before others. We are testing this car and beating it up so others will benefit from the knowledge. So maybe that's a fool to you? We have zero interest in a Tesla for a track car. Or a Hyundai for that matter. Those are just not our style. We hope you understand.
We have a tesla and it is fast and can be kart-like on rails in turns tho heavy but its not a gas motor car. i had an s2k once, that's a car that i really found to be perfect except the rear corners in the ragtop would rip. When i look at GRC it makes me think of s2k and I want one. Oh, the ap1 S2k was $34k in 1999 and the interior was spartan. How much $ would that be in US$ today adjusted for inflation? I'd say around $50k ish. That said GRC, even with markups is cheap and yes S2K when it came out was going for $2-3k above sticker.
99% of this car life will stay on city road, and exhaust just to annoy peoples on the street, or just show of
You mean the GRC in general? Or our GRC?
Please don't do a center exhaust. No car with a center exhaust has ever looked good, except of course, maybe a Pagani Zonda.
So that's at least one car...
Stop stop stop stop stop stop stop stop stop! Wait, I thought Toyota’s were the most reliable vehicles out there, no matter what! I thought you could go hundreds of thousands of miles with zero issues, doing anything you want! This is what Toyota love-makers tell us right? Or is maybe, JUST MAYBE, that Toyota’s are reliable cars because they are tuned very low, and driven very slow? Maybe, JUST MAYBE that has something to do with it, because we are now witnessing one of the very very very few factory Toyotas, that’s tuned from the factory, at a pretty high limit (which is about the normal limit that Euro vehicles are tuned at from the factory), to see problems and it’s weak points come out.
"Driven very slow" is an exaggeration. It's not like their max speed is 30 mph
Still runs and drives
@@ranggafahmi8479 it’s not rocket science to know that most Toyotas (Supra doesn’t matter because that’s actually a BMW 👍) are slow as balls in comparison to their rivals. That goes for their cars, SUV’s, and trucks. They are slower, and produce a lot less torque than most anything else in their class. That alone means their engines work a lot less, and when an engine works a lot less, their drivetrains also work a lot less, and the result is things last longer. It’s not rocket science.
We are hardly treating this car like someone's grandparents treat their Toyota Avalon. We aren't badmouthing Toyotas or BMWs. We are just hunting for weaknesses in a car pushed to its limits. We push it so we know what to expect on the track.
german cars break a lot bc they suck. toyotas dont break a lot bc they dont suck. who cares wat the reason is even if the reason is speculation and not fact? ase in point my 99 4runner gets yhe snot driven out of it on and off road and the tranny and motor are abused to limits quite a bit. with 240k on it, its just fine. i mean your argument that they are tuned low is very ignorant, did you just make that whole theory up?
next u r going to tell everyone that hondas are reliable lmfao!
Would it be a good idea to heat wrap the exhaust for daily driving? Or no?
Huh?
@@reinhardtiushippoglossoides I think he's asking if it would be also good for regular daily driving, as the video is focused on track performance, sometimes you don't need the same in every situation.
In this case, I'd say it's ok anytime, as the reading is probably wrong or at least the heat source is not the one that should be measuring, so heat wrap for everything!!
@@YOEL_44 pretty much what I meant to say
Sorry I couldn't say it in a clearer way I was driving but I really wanted to ask before I forgot 😆
@@thedsmbroadway3780 As always the answer is, it depends. First it's still an unknown how much heat is actually transferred from the exhaust to the clutch packs. As close as we see them here, the GrY is even closer as this is one of the revisions made for the GR Corolla. Second is if you're in an environment where they salt the roads. If that's the case, you don't want any material that absorbs and retains water wrapping any metal piece, especially one that goes under heavy thermal loads and is simply steel. Third is most people won't need to worry about it anyway as the problem seems to only show up for track duty or repeated launches.
Don't heat wrap any exhaust. Answer is no.
Its so funny to see ppl
Buy a street car and try to track hard. These cars are street cars first and foremost not
Track cars, can it do a track day with a fairly new driver here ans there sure! But not what u guys are trying to do, gonna be a money pit for the typical
Ricer but hey i learned the hard way am sure other will want to
Learn the same way.
Why is it funny? We are looking for the limits of this car from Toyota. We want to chase down its shortcomings and build it up to handle the street and hard track days. We will abuse our car so others can enjoy theirs more!
@@JustDriven why not just buy a car thats is more track oriented? Seems kinda of a big ego thinking your going
To build a better car than toyota, toyota built it that way, to be a fun street car not a track car you already hit the limits lol hey its your money and if u are doing it for the youtube views and money than i get it ur other than that its kinda dumb..
Since the dawn of the automobile, owners have been modifying them to go faster. This is no different. Even if we had a more track oriented car like an M3 we would want to make it faster. It is who we are. It's what we do. Enjoying your car at its limits is fun. Building our cars to reach a higher level is fun for us. We hope you can enjoy the build and our views even if they aren't your own.
@@JustDriven on d again thinking you can make it better/faster than factory is crazy! Do you know much r and d they have how
Much money they spend? But hey get your money and your
Views bro its all good but dont bs me with the “beginning of time” bs lol thats made me
Laugh.
We've already made it faster. Sssoooo...Not sure what you're rambling about. Also, if you're going to quote someone who JUST wrote something, try quoting them correctly. We clearly wrote, "since the dawn of the automobile" not "beginning of time." It's okay. We know you're bored. We don't mind conversing about this, but we don't think that's what you want.