It’s 9
I went 8 because I wanted to try colder plugs as I’m running more boost and our fuels in Aus seem of questionable quality at times
GR Yaris Plugs
- Thread starter Michael Knight
- Start date
I went 8 because I wanted to try colder plugs as I’m running more boost and our fuels in Aus seem of questionable quality at times
Sekred
Totally Hooked
- Dec 18, 2021
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The OEM plugs that came out of my 2020 GRY were NGK DILKAR8U7G so the heat range is # 8 .
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SckSqzBngBlo
Dedicated member
Interesting comment.
I'm not sure I would even trust Toyota dealers to wash my car and even that job only gets done a few times per year.
This is where I purchased mine from. They are a GR specialist. The site says they have two types. One for stock and an other for modified
I went with the colder ones
HKS Spark Plugs for Toyota GR Yaris / GR Corolla | Iridium Racing + Platinum
The HKS Super Fire Racing Spark Plugs feature high quality Iridium performance, designed and tested to handle increased vehicle performance through aftermarket tuning. HKS Super Fire Racing Iridium + Platinum Spark Plugs - 2020+ Toyota GR Yaris / Corolla G16E-GTS. Multiple heat ranges available!
g16motorsport.com.au
What gives
I wasn’t referring to the dealers specifically (there are good and bad ones) but to Toyota engineers who designed the engine and maintenance schedule together in order to have a reliable engine on stock form…
Spirited
Totally Hooked
- Jan 23, 2022
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Fair point and I agree that it's worth keeping things separate in our minds when it comes to the different Toyotas (manufacturer, dealers, etc).
Having said that, the Toyota manufacturer, while much more trustworthy than most dealers in my view, can get it wrong too, or at least not perfectly right
They're also human and subject to constraints of their collective operating model (eg what reaches us is not just the result of engineers' thinking, but also lots of other functions, like finance, etc).
The full details of MK2 will perhaps demonstrate what Toyota could have got (even) better with the MK1. Other examples include no mention of a running-in service in the manual, a questionably lengthy interval for the rear diff oil change, etc.
So, just like I choose to baby my car by changing the rear diff oil earlier than the Toyota schedule prescribes (so that I get the most out of it and look after it), I change plugs earlier if time and money permits. I still trust Toyota that if I go by their schedule intervals, the wheels won't come off
My participation in this forum is largely for that niche element, though; info that goes beyond what I can find in the owner and repair manual. As well as insight other and/or earlier than what I get through official sources (and thanks for that, by the way!).
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completely agree, changed at 30k and instantly improved start up and idle, Toyota's schedule is way too far, same for oil and aux belt
SckSqzBngBlo
Dedicated member
Its a 15 min job for any enthusiast to change plugs and the difference is remarkable.
Not sure why you want the car to be unhappy just to praise the Toyota dealer service schedule?
Not sure why you want the car to be unhappy just to praise the Toyota dealer service schedule?
no real fixed time but avoid disappointment say around 40 or 50k miles or 80k km
- Dec 27, 2021
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Does anyone have a good EU supplier for the ruthenium plugs mentioned earlier in the thread?
At about 35,000 km I've noticed starts taking half a revolution or so more than they used to and a few € chucked at plugs can hardly hurt.
At about 35,000 km I've noticed starts taking half a revolution or so more than they used to and a few € chucked at plugs can hardly hurt.
good - aux belt I leave for Toyota guys but maybe change those super plugs at 70tkm or smth, just out of curiosity.
Ordered from local dealer here 60€ for 3 plugs + delivery.
NGK - LKAR8BHX - NGK Ngk Spark Plug Stock # 91784 | Spark Plugs | Laukkanen Motorsport English
Buy NGK - LKAR8BHX - NGK Ngk Spark Plug Stock # 91784 quickly at a low price in Laukkanen Motorsport. Click and order now or visit our shop. Spark Plug - Ruthenium HX - 12 mm Thread - 26.5 mm Reach - Gasket Seat - Stock Number 91784 - Resistor - Each Additional information...
laukkanenmotorsport.fi
Sekred
Totally Hooked
- Dec 18, 2021
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Let us know what you think once you install these.Ordered from local dealer here 60€ for 3 plugs + delivery.
NGK - LKAR8BHX - NGK Ngk Spark Plug Stock # 91784 | Spark Plugs | Laukkanen Motorsport English
Buy NGK - LKAR8BHX - NGK Ngk Spark Plug Stock # 91784 quickly at a low price in Laukkanen Motorsport. Click and order now or visit our shop. Spark Plug - Ruthenium HX - 12 mm Thread - 26.5 mm Reach - Gasket Seat - Stock Number 91784 - Resistor - Each Additional information...
Just ordered some in the UK, I’ve had a misfire happen a few times and then not occur for a while but if you leave it for a few days it has trouble starting or cold idling. Originally i thought it was a coil pack but reading the stories here and being around 36,000 miles plugs sound like the solution.Ordered from local dealer here 60€ for 3 plugs + delivery.
NGK - LKAR8BHX - NGK Ngk Spark Plug Stock # 91784 | Spark Plugs | Laukkanen Motorsport English
Buy NGK - LKAR8BHX - NGK Ngk Spark Plug Stock # 91784 quickly at a low price in Laukkanen Motorsport. Click and order now or visit our shop. Spark Plug - Ruthenium HX - 12 mm Thread - 26.5 mm Reach - Gasket Seat - Stock Number 91784 - Resistor - Each Additional information...
Obviously I could take it to a dealer for warranty but the cost and time for plugs or a coil is probably break even.
