30K Service - Spark Plugs?

who said anything about enhancing performance?... was just seeing if iridium plugs are worth the price

 

iridium are not solely for boosted applications, they are just ideal for them due to their superior durability.

i remember when HKS superfires first came out, they were $25 A PLUG! now you can find 6 plugs for about $60 from NGK and denso. you have to weigh out if you'd rather change the plugs once for 60 bucks and 2 hours of your time, and be done with it forever, or if you'd rather change the plugs every 30k for 18 bucks and 2 hours of your time each time. most of you probably view iridium as overkill and i can understand that.

something tells me that you could ideally re-gap the OE plugs at 30k intervals (unless the center electrode is really worn), but due to emissions toyota has it part of their intervals and emissions warranty that they need to be changed that often. that is just a guess, but considering what i've seen with service intervals using copper plugs in the past, with higher compression and higher abuse applications, that seems logical.

 

again... who said i wanted to buy them? if you re-read my post, i asked if anyone had experience with them. no where did i say i wanted to but them.

 

you can get iridium in the same heat ranges as any other plug.

if your truck and set up calls for a 6 in japanese plugs, get a 6.

naturally, but iridium plugs cost a ton more when you have 6 per engine than cheapo copper plugs.

in these days of lowering production costs and cutting corners, such as the bean counters making them meter paint down to the DROP, i'm not surprised they equipped these trucks with copper plugs. they work fine, but need to be changed sooner than more expensive technology plugs, which means they save money and you will probably spend more money with Toyota getting them changed/replacing them.

 

I have no idea if mine have ever been changed. I have 42,000 on mine.

 

oh dang, off-topic but you guys are pretty close to me. i'm in cape may county.

 

I just did my 30K maint and changed them out.

 

Awesome thread thanks!!!

(kinda confused on spark plug to get lol)

1) Question,

OEM plugs or the long life denso ones? http://shop.advanceautoparts.com/we...nso_20650306-P_960_R|GRPTUNEAMS_1154378924___

only 8.99

I just want whats best for paradise. Also I'll be getting a K&N filter most likely.

 

if you want to change the plugs as per the factory intervals, get the copper NGK v-power or comparable denso units.

it you want to have an indefinite change interval BUT pay 3x as much per plug, get the iridium.

it's up to you. truthfully i'm going to run these plugs to the factory interval and install iridiums. i've used them in all of my cars since HKS superfires were released a long while ago so i have no reason to do differently here.

just make sure the heat range is the same. though i am not that familiar with denso, it appears the stock plug is K20HR-U11 so the long life iridium counterpart would be

$53 SK20HR11 ---- IRIDIUM PLATINUM power pack Spark Plugs -- # 3421 ----- 6 PCS NEW

SK20HR11. i am familiar with NGK and their heat range numbering. they too use the same heat ranges between their types, so if your truck takes a

$6 LFR6C-11 V-Power Spark Plug, Pack of 1

LFR6C-11 in copper, it would take a

$11 ILFR6T11 Laser Iridium Spark Plug, Pack of 1

ILFR6T11.

 

Yes, thank you. I just wanted to make sure. His truck in an 07 prerunner and just wanted to make sure.

 

I have a question: What about the wires. When do they get changed, no ones talked about them.

 

coil on plug. there are no wires to speak of since there isn't a classic distributor and coil setup sending power to the plugs through wires.

 

Thats why I need a site like this... I didnt realize that.

Thanks

 

no prob. i didn't even think about it until i pulled the engine cover and intake box off the other day to see what's doin' underneath.

 

If you can change a flat tire, you can do the plugs. Easy.

 

It's a little more involved now. Since you have to remove panels/parts to get access.

Not like the old days of having my Accord and it's right on top of the engine.

 

similar concept....take the top cover and the air filter...