GR86 Engine Failure

Are you concerned about the GR86 engine failure stories emerging?

  • 1. Not concerned - if it breaks Toyota will fix it

    Votes: 48 39.3%
  • 2. Slightly concerned - but not losing any sleep over it

    Votes: 53 43.4%
  • 3. I’m getting worried - I want to use my car on track

    Votes: 13 10.7%
  • 4. I’m very worried - I’d planned a lot of mods and lots of track use

    Votes: 2 1.6%
  • 5. I’m that worried I’m cancelling - and off to buy something else

    Votes: 6 4.9%

  • Total voters
    122
You could go say oh well its got warranty but given how things have been, how long would you want to be without your car for? 3 months, maybe 6? It sure as hell won't be a seamless ride, then there is the likelihood of encountering issues, whether its them scuffing your paintwork, poor workmanship, its certainly not going to be factory levels of fit and finish, no thanks I'd rather not have anyone touch it if they don't need to.
This is a lot of "what if's" at this point as it could be fine. If it's not, then deal with that bridge when we come to it and hope it's dealt with. If in 3 years it's not right I'll sell on. I have the bike so have no issue being without a car for a while. I was pretty much all last year anyway waiting for this. The last 86 when it had the recall for valve springs was mostly without issue. Some failed later but competent garages did plenty and were fine.
 
I'm less concerned as I pretty much only drive on the road, and I don't tend to me flying around roundabouts fast enough for it to be a problem (hopefully). It is still in the back of my mind, but I'm not going to let it stop me enjoying the car.

I think the absolute best thing we can hope for is that it's a relatively simple issue which could be rectified with a new sump design and that enough noise gets made about it that Toyota/Subaru end up doing a recall to retrofit a replacement. Unfortunately though, I reckon it will be a case of they will just ignore it as it will be cheaper for them just to replace the engines that do fail.
 
I'm less concerned as I pretty much only drive on the road, and I don't tend to me flying around roundabouts fast enough for it to be a problem (hopefully). It is still in the back of my mind, but I'm not going to let it stop me enjoying the car.

I think the absolute best thing we can hope for is that it's a relatively simple issue which could be rectified with a new sump design and that enough noise gets made about it that Toyota/Subaru end up doing a recall to retrofit a replacement. Unfortunately though, I reckon it will be a case of they will just ignore it as it will be cheaper for them just to replace the engines that do fail.
I agree, unfortunately I doubt Toyota will take any proactive action, at least in the near future. That would mean admitting there is a problem with a car still on sale. They are likely to discredit the video (perhaps not unfairly) as the cars were modified with oil coolers and running 5W30, even if the same issue applies (or possibly worse) for stock cars on thinner oil. It’s not impossible they could implement a fix (they did for the valve spring recall) but I think that’s less likely, especially while this generations is still for sale. The damage is suspected to be accumulative wear eventually leading to failure, so if you have covered a lot of miles before a potential future recall, some damage could have already been done. There are not many high mileage example to know what the average long term reliability looks like.

I downloaded an accelerometer app and went for a drive in my GT last night, as I was curious what the lateral G would be on the road with Pilot Sport 4. Initial conclusions:
  • A normal drive is probably sustained 0.4 G with spikes up to 0.5-0.6 G.
  • Making progress is probably sustained 0.5 - 0.6 G and spikes up to 0.7-0.8 G, which appears to be just below the danger zone (looked like issues started around 0.9 G)
  • Pushing hard is probably sustained 0.8 - 0.9 G with spikes up to 1.1-1.2 G, which is into the danger zone.
Sustained = 3+ seconds, spikes = less than 1 second. Above was on medium sized roundabouts and slip roads, within national speed limits. I am going to monitor my driving for the next couple of weeks so see if those findings are consistent.

If I went ahead with my order I would find myself holding back some of the time for fear of oil starvation, which does somewhat diminish the purpose and fun of buying a sports car.

Are there any legal experts in the group able to comment on whether Toyota could change the service activated warranty at a later date so the 10yr warranty no longer applied, and we only receive the 3yr manufacturers warranty? The 10yr / 100k warranty is mentioned on the GR86 marketing pages, with a footnote that T&Cs apply: https://www.toyota.co.uk/new-cars/gr86

The warranty T&C include the statement “We reserve the right, at our sole discretion, to update, change or replace any part of these Terms by posting updates and changes to our website. It is your responsibility to check our website periodically for changes”: https://www.toyota.co.uk/content/da...ranty/toyota-warranty-ts-and-cs-june-2022.pdf
 
The 86 does have G Meters which are interesting. I'll leave it on during drives to see what I get. Also tells you how much throttle, brake and steering lock. Goes red when you hit the lock stops.
 
The 86 does have G Meters which are interesting. I'll leave it on during drives to see what I get. Also tells you how much throttle, brake and steering lock. Goes red when you hit the lock stops.
Yeah, I always thought it was a gimmick, but now thinking it could be the most valuable feature 🤣.
 
If I went ahead with my order I would find myself holding back some of the time for fear of oil starvation, which does somewhat diminish the purpose and fun of buying a sports car.
Yep, it will always be in the back of your mind even if you try not to worry
 
Interesting HKS do kits to make it a 2.5 now
1687954724617.webp
 
There was a similar issue with the RB26 the ends was staved with oil after a Chicane the wave of oil got bigger with every bend. Tomei did a sump baffle kit with rubber oneway flaps . You also had to drill out the oil return holes from the rear of the sump. A restrictor was also put in the oil gallery to the head. Some fitted external return head to sump and a bigger capacity sump . Sure we will have a after market solution soon
 
There 100% will be an aftermarket fix for this. For a new car the aftermarket because it's so similar to the old one is getting bigger every day.
 
If there are enough instances across the pond and our American friends manage to successfully push some sort of class action case (despite seemingly an abundance of them running 255 wide semi slicks, messing about with different oil viscosities, running them hard on tracks in higher elevation and higher temperature locations along with their questionable manual shifting techniques) then there may be some manufacturer recall at some point. I guess time will tell!
 
Unless there are a significant number of cars consistently trashing their bearings I can't seem them doing anything. Yes there is a noticeable drop in oil pressure around right hand corners but whose to say that's not within spec? Or that the pressure drop is only at the point of measurement. Is a momentary drop in pressure enough to cause damage?

Lots of variables to consider and lots of opinions from people off the internet who suddenly become engine and lubrication experts. There have been a number of bearing failures from US owners who neglected to maintain their oil level.

Proactive aftermarket suppliers will be the ones who come up with a solution, or even from the GR cup series, if they keep running into problems I'm sure they will address it.
 
In Snows Bournemouth for 1st service.

Asked the receptionist to get the tech to check the oil for RTV residue. Of course we will Sir, we’ve already had one GR86 fail and had to replace the engine ☹️
 
In Snows Bournemouth for 1st service.

Asked the receptionist to get the tech to check the oil for RTV residue. Of course we will Sir, we’ve already had one GR86 fail and had to replace the engine ☹️
Interesting. It could be that, could be abuse, etc and they've got it under warranty. It's what it's there for.
 
Seems doubtful, I don't think I would listen to the receptionist in this instance (No disrespect to that person, but they deal with alot of cars, customers, queries and issues)

Americans are very hot on this, the RTV issue/cause has fizzled out, even with one side of the pickup completely blinded its proven that there is no distinguishable loss in oil pressure.

https://www.gr86.org/threads/rtv-had-no-effect-on-the-oil-pressure.11541/
 
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