ACDelco Platinum spark plugs, will they fit? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

lumbeardjack · 02-03-2021, 02:27 PM

I got ACDelco Platinum spark plugs and I got a bit nervous when the only viable reason behind which ones to get was the salesperson said "I used to have a BRZ years back and this is what I used" (good memory???)
I purchased part# 41-805 and when I scour the web I see nothing saying that it would fit my 2017 86. the owner's manual says to strictly use Iridium and I found a thread that mentioned a platinum plug that can be used. I'd like some clarity before I jump into this

DarkPira7e · 02-03-2021, 03:29 PM

You'll likely be a martyr. or you can choose not to take the risk. I personally spend the coin to get OE plugs, because sparkplugs on this car are not something worth messing around with

churchx · 02-04-2021, 06:08 AM

I don't know if our OE sparcplugs are already rather expensive and higher end due wish to lengthen change intervals (by original procedure involved lifting engine), or it's generic trait of modern high efficiency/rpm/compression engines that need high quality plugs as well, but OE are good. Most aftermarket ones claiming massive improvement over those i'll look at as if snake oil. Or at very least as massively overblown improvement, if any. OE in this case works well, and at most i'd think of trying to find them somewhere cheaper, with lesser markup then that of some dealerships. Coilpack of very early twins is different story though.

sygfrid · 02-04-2021, 07:16 AM

OEM spark plugs are DENSO Iridium. Iridium is harder, lasts longer, & has higher melting point than Platinum. Changing our boxer's spark plugs is quite challenging too so stick with the OEM Iridum ones.

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TommyW · 02-04-2021, 08:43 AM

When I had my new IAG motor built I asked my builder what plugs and he said to stick with OEM

Purist · 02-04-2021, 04:21 PM

Dont forget that incorrect sparkplug temperatute range can cause knocking, whuch will cause power loss at best, damage at worst.

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jflogerzi · 02-06-2021, 12:46 AM

Oem in this case is good. Stick with them. Given how long they last...

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8inchAzN · 02-10-2021, 05:27 PM

Quote:

Originally Posted by sygfrid

OEM spark plugs are DENSO Iridium. Iridium is harder, lasts longer, & has higher melting point

What Iridium spark plugs would you recommend?

Edit: wait are you using DENSO Iridium and Iridium interchangeably? I read it as Iridium > OEM Denso Iridium and you continued to recommend the Denson Iridium...

churchx · 02-11-2021, 12:32 AM

Iridium is name of metal, not some trademarked product. And what's wrong with using OE recommended plugs that had been chosen by engineers that made this engine and have most experience with it? About the only reason not-to, if you have reliable info (apart from advertisement pitch by manufacturer or retail to push sale or some single forum thread) that some aftermarket alternative is as reliable and not differing much in important specs, but still is cheaper then OE.

scion fr-s · 02-23-2021, 05:56 PM

I have been running HKS sparkplugs for a little over two years now. I haven’t had any knocking or other strange noises coming from under the hood.

02-03-2021, 02:27 PM	#1
lumbeardjack Member Join Date: Mar 2018 Drives: 2017 Toyota 86 Location: Lancaster Posts: 35 Thanks: 5 Thanked 8 Times in 5 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	ACDelco Platinum spark plugs, will they fit? I got ACDelco Platinum spark plugs and I got a bit nervous when the only viable reason behind which ones to get was the salesperson said "I used to have a BRZ years back and this is what I used" (good memory???) I purchased part# 41-805 and when I scour the web I see nothing saying that it would fit my 2017 86. the owner's manual says to strictly use Iridium and I found a thread that mentioned a platinum plug that can be used. I'd like some clarity before I jump into this

02-03-2021, 03:29 PM	#2
DarkPira7e Rust bucket enthusiast Join Date: Feb 2017 Drives: 2013 Turbo Firestorm FRS Location: Vermont Posts: 3,950 Thanks: 3,210 Thanked 4,104 Times in 2,051 Posts Mentioned: 31 Post(s) Tagged: 0 Thread(s)	You'll likely be a martyr. or you can choose not to take the risk. I personally spend the coin to get OE plugs, because sparkplugs on this car are not something worth messing around with __________________ Turbo FR-S Build - Build Thread JDL EL Recirc manifold, Boostlab BL58x Turbo w/ T51R, 17x9 ARC-8, IAG block

02-04-2021, 08:43 AM	#5
TommyW Senior Member Join Date: Feb 2017 Drives: '13 Whiteout Location: San Clemente Posts: 1,491 Thanks: 496 Thanked 1,242 Times in 673 Posts Mentioned: 10 Post(s) Tagged: 0 Thread(s)	When I had my new IAG motor built I asked my builder what plugs and he said to stick with OEM Last edited by TommyW; 02-12-2021 at 09:13 AM.

02-04-2021, 04:21 PM	#6
Purist Senior Member Join Date: May 2017 Drives: Subaru BRZ Location: Australia Posts: 349 Thanks: 125 Thanked 261 Times in 145 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	Dont forget that incorrect sparkplug temperatute range can cause knocking, whuch will cause power loss at best, damage at worst. Sent from my SM-G973F using Tapatalk __________________ Less More

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02-04-2021, 06:08 AM	#3
churchx Senior Member Join Date: Mar 2015 Drives: 2014 GT86 Location: Latvia, Riga Posts: 4,333 Thanks: 696 Thanked 2,086 Times in 1,436 Posts Mentioned: 53 Post(s) Tagged: 1 Thread(s)	I don't know if our OE sparcplugs are already rather expensive and higher end due wish to lengthen change intervals (by original procedure involved lifting engine), or it's generic trait of modern high efficiency/rpm/compression engines that need high quality plugs as well, but OE are good. Most aftermarket ones claiming massive improvement over those i'll look at as if snake oil. Or at very least as massively overblown improvement, if any. OE in this case works well, and at most i'd think of trying to find them somewhere cheaper, with lesser markup then that of some dealerships. Coilpack of very early twins is different story though.

02-11-2021, 12:32 AM	#9
churchx Senior Member Join Date: Mar 2015 Drives: 2014 GT86 Location: Latvia, Riga Posts: 4,333 Thanks: 696 Thanked 2,086 Times in 1,436 Posts Mentioned: 53 Post(s) Tagged: 1 Thread(s)	Iridium is name of metal, not some trademarked product. And what's wrong with using OE recommended plugs that had been chosen by engineers that made this engine and have most experience with it? About the only reason not-to, if you have reliable info (apart from advertisement pitch by manufacturer or retail to push sale or some single forum thread) that some aftermarket alternative is as reliable and not differing much in important specs, but still is cheaper then OE.

02-23-2021, 05:56 PM	#10
scion fr-s Senior Member Join Date: Jun 2017 Drives: 2017 PP BRZ Location: California Posts: 201 Thanks: 56 Thanked 53 Times in 43 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	I have been running HKS sparkplugs for a little over two years now. I haven’t had any knocking or other strange noises coming from under the hood.

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