GR Yaris Plugs
- Thread starter Michael Knight
- Start date
Personally I’d go with 0.7 gap, gives a slightly smaller but more powerful spark against a bigger but weaker one. At full throttle when load of fuels pouring into cylinder a stronger spark gives a more consistent burn
out of interest: when I was young, the latest shit to put in our japanese rice cans were iridium plugs from denso. are those still recommended?
Sekred
Totally Hooked
- Dec 18, 2021
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Noo buddy,
ngksparkplugs.com
Ruthenium HX™ Spark Plugs - NGK Spark Plugs
Ruthenium HX High Ignitability spark plugs for NGK are designed for maximum durability and performance in today’s highly efficient engines.
ngksparkplugs.com
Robbie
Fascinated Member
- Dec 16, 2021
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I recently swapped out my 18000 mile plugs for a new set of the Ruthenium NGK's, gapped at 0.7mm . I'd had what a thought was a slight missfire at WOT up a hill earlier in the year with 20c temps. & as a result I'd taken it to my local Toyota garage in case it was a failing coil but they couldn't find an issue , (they said it could have been poor fuel). So I thought I'd change the plugs out and see if this would help.
I think my cars allways slightly lumpier idle than other GR's Ive been in & made worse by an engine mount insert...Not any more, it's way smoother with noticably less vibration coming into the cabin. It's harder to tell if it's better higher up the rev range atm but overall I'm really pleased with the result.
I think my cars allways slightly lumpier idle than other GR's Ive been in & made worse by an engine mount insert...Not any more, it's way smoother with noticably less vibration coming into the cabin. It's harder to tell if it's better higher up the rev range atm but overall I'm really pleased with the result.
Litchfield suggested that I should expect to go though plugs much sooner than default scheduling @ +100hp but to continue using the OE heat range. Plan is do the same as you at 18k service
Also to add based on this info https://www.clubmotul.co.uk/blog/oils-and-fluids-for-toyota-gr-yaris/961 5L of Motul 8100 power
sixtentouge
Totally Hooked
- Aug 28, 2023
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FWIW, the NGK race plugs for the G16E is R2558E-8, 9, or 10. Iridium center, platinum outer. ¥7,200 each.
Swapped these yesterday. Cars idle was bit uneven in startup, that appears to be gone with new plugs. Havent driven much lately (working 24/7 for last 6 months) but feel like its bit smoother again.
Here’s old plugs.
car seems to pull now much better. so I can recommend this plug. at least based on 1 day drive.
Sekred
Totally Hooked
- Dec 18, 2021
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did the first swap around 31tkm and now she has 61tkm so 30tkm with plugs.
- Dec 27, 2021
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The car does seem hard on plugs, they don't last anywhere near what Toyota seems to reckon they should.
I'm at 70k km and have noticed a slight hesitation pulling hard around 4500 rpm so I'll change them again.
I'm at 70k km and have noticed a slight hesitation pulling hard around 4500 rpm so I'll change them again.
Euge
Totally Hooked
Just picked up a set of oem ngk for mine this evening. 50 euro delivered. Daily driving mine in Tallinn traffic for 45000km has taken its toll on my plugs. Really need to start giving it a good blast every weekend to get some heat in it to keep it in top shape. Pull in 3rd and 4th seems a little sluggish at high revs along with slightly lumpy idle. Hoping a fresh set of plugs next week does the trick along with a clean out blast down motorway this weekend.
guessing Toyota themselves couldn't have known the relatively short plugs life for these engines so could only put an arbitrary figure on milage, it's up to us as long time users to fine tune a realistic change schedule
Euge
Totally Hooked
Fun fact NGK Plugs for the G16E-GTS come in packs of 4. Looking forward to fitting these when I get time at the weekend.
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