Hey AJ, great Video! What is with gen2 GR yaris? I thought toyota just used the GR corolla pistons(and therefore same Problem) ? But sounds Like they Modified/fixed that Problem on gen2?
@daveb2300
Сағат бұрын
My question also….?
@AJClubsport
26 минут бұрын
Yes, this is exactly the point: we still don’t know if the issue is fixed on the Gen2 or not, till we manage to get eyes on the pistons and understand what they actually used. Toyota is very aware of the problem and are trying to keep on top while trying to stay away from a huge recall on Gen1’s and Corolla’s
@STIStuff
42 минут бұрын
Can we have some oil recommendations plz
@AJClubsport
29 минут бұрын
Ant major brand, full synthetic, 5W30 API SP rated will be fine mate!
@CA18Drifter
44 минут бұрын
Thanks for sharing this info and my suspicion on the correct oil 5w-30 which i run myself
@AJClubsport
28 минут бұрын
Happy to help and share this information: please share the video with everyone!
@mitevm
41 минут бұрын
So, just because Toyota's engineers have had a few instances of misgapped piston rings, I should now take a gamble with a local mechanic-essentially paying a lot of money to draw a new hand of cards without even knowing how bad the first hand was? What are the right tolerances, how do you check them? Why buy new pistons before verifying that I have the problem?
@AJClubsport
30 минут бұрын
Not sure it is a mistake, I think that is how they engineered it and it isn’t working ad intended. Not any mechanic, somebody that specialises in these engines
@mrmorizofan7001
34 минут бұрын
thanks for the video. sounds strange that Engine is so well designed, yet it has ring gap problems like they would not been measured well during engine build up. is there any documentation available from Toyota / Yamaha to what spec the piston rings should be gapped in this engine, just to have it checked whoever has the possibility? it is quite big project to open the engine but no brainer if forging it. Just installed catch can to my GR, and already running baffles in oil pan including oil cooler, maybe they help in keeping the temps down and oil in better condition but as said it is not a resolution. But good reason to do a bigger engine project with valve springs, cams and pistons at some point.
@AJClubsport
31 минут бұрын
Yes mate, forging is the only way to have complete piece of mind. For sure they are gapping the rings for a reason, maybe the specific material they use expands more than what we usually see, and this dimension shift makes the issue happen
@thedangdanger
Сағат бұрын
This event in the nomenclature I'm familiar with is called LSPI, low speed pre igniton. Well documented in many DI petrol engines. SP rated oil a must, lower calcium content alledgedly reduces uncontrolled oil detonation events around the ring lands. It makes sense that excessive ring gap would excaserbate the chance of a LSPI event.
@AJClubsport
28 минут бұрын
Well said mate!
@webbieuk
34 минут бұрын
Scary . Do I now keep lower power in my car or still map and tune
@AJClubsport
33 минут бұрын
Not really a big factor in this lottery, as long as things are kept sensible
@lukapogo
13 минут бұрын
I have noticed a large disparity in the day-to-day fuel consumption of my GR versus other friends'. This might explain it. Would a compression test be able to show a latent issue in our engines?
@armoredp
11 минут бұрын
Very informative and well investigated video, thank you. Hope the problem in Gen 2 is fixed, but to be sure I will make sure to use the correct oil and engine warm up procedures as we all should!
@Sprintcup1
33 минут бұрын
Nice video AJ, dissapointing to find it's a build issue by Toyota on the ring gaps, as others have said has the Gen2 been fixed ? Correct warm up and cool down is essential on all engines, built or stock, keep up the great work . Regards Russ....🙏
@mitevm
28 минут бұрын
I’m confident that Toyota will find a reason to deny your warranty in such cases, but using off spec oil viscosity makes their case far easier. I like my chances with 0W20 and the courts of law.
@romka_ind
30 минут бұрын
If this is true, why Toyota won't make a recall? Or at least change the oil recommendation? Adriano did you try to contact them? Any reaction?
Пікірлер: 21