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Discussion Starter · #1 · (Edited)
anyone USED long life iridium SK16R11 for stock 99 corolla? not ur avg denso iridium.

I hear that denso has special plugs that comes with platinum ground and iridium center, a combination that will truely make the plugs last, otherwise, standard ngk / denso iridium will last about 30,000 to 60,000? Does anyone know of the stock number for such denso plug? I found it (SK16R11), but have a few questions below. I don't think ngk carries them.

Awh man, this thing is f****en expensive, about $15 each!!! ouch!!! the ONLY reason why I want them in my stock engine is because I don't want to ever replace them because there's always risk of damaging the sparkplug wiresets with every plug change.. i've had ngk before, did not abuse them, was as gentle with them as possible, but the sucker still broke! i'm using stock TE64 ngk wireset..let's hope this won't break on me. the one that failed on me after 1+ years had no burn marks.

update: found SK16R11 for $9.35 at http://www.sparkplugs.com .. next is i'll research if NGK has the ultra long life iridiums too.

here's for reference:

http://www.tundrasolutions.com/forums/engine-and-drivetrain/41290-denso-iridium-problems-concerns/
http://www.densoiridium.com/faq.php

I'm going to return my ngk iridium cuz I initially thought it would last 100,000 miles. I don't want them if it lasts about 60,000 miles.

Few questions:
1) Does anyone know why denso doesn't offer the ultra long life iridium specifically for 99 corolla, stock engine 1zzfe.
http://www.densoiridium.com/find_part.php

2) are other engines pretty much the same if they are a few years off, for example 2000 corolla, stock engine *also* is a 1zzfe. I don't understand why for this particular year, denso has available the ultra long iridium / platinum part: SK16R11 while it doesn't list it for the 99 corolla.

3) still debating if I should pay for a plug that's about $10, the best ultra long running iridium or change them out often. Are there some spark plug wiresets that just won't break?? people swear by ngk wiresets, but i wasn't too impressed the last time had them. for the money i pay, i kinda expect it to last a life time.

Thanks,
Gordon
 

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<3 My subie!! >.<
03 Camry SE
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846 Posts
should work, Denso usually toyota choice. if there problem way car runs, get plugs had before
 

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Discussion Starter · #3 ·
yeah, but by that time, I've already bought the car. I'm just wondering why sources such as denso does not list this ultra long life spark plug for my 99 corolla, yet lists it for a 2000 corolla which has the same engine.. anyone know? There's got to be a reason right?

If an engine is the same model number, but the car is a different year, is it the same engine though? It's hard to believe they change engine design between years yet it has the same engine model.

Thanks,
Gordon



should work, Denso usually toyota choice. if there problem way car runs, get plugs had before
 

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Raging Raven
05 Dodge Neon SRT-4
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2000 is when the switch to VVTI and i guess that makes a differcen. Also went to using ignition coils instead of plug wires.
 

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Discussion Starter · #5 · (Edited)
here's what I see:

both corolla 2000 and 1999 can use denso IK16 iridium plugs. If that's true, if one can use SK16R11, then shouldn't the other can also use SK16R11? Am I missing something?

source: http://iridiumpower.com/find_part.php

has anyone tried SK16R11 on a 1999 corolla?

Thanks,
Gordon

2000 is when the switch to VVTI and i guess that makes a differcen. Also went to using ignition coils instead of plug wires.
 

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Raging Raven
05 Dodge Neon SRT-4
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1,095 Posts
well get one of those plugs and then look at one that your take out from your car. So long as it the same length and thread it will work.
 

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<3 My subie!! >.<
03 Camry SE
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846 Posts
is difference between 98-99 and VVT-i 2000-2002 and up as TenZen said
 

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Raging Raven
05 Dodge Neon SRT-4
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1,095 Posts
Well by looking at the list from Denso, it looks like 99 didnt use Iridium. Maybe late 99 did, but not early, so if your car uses Iridium call it an early 2000. Like if i want parts for my car, I cant call it on 2002 cause theats when then did an redesign on it.
 

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<3 My subie!! >.<
03 Camry SE
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846 Posts
vvt-i have ignition coils, not the plug wires, mite be difference??
try new plugs and see if enigne likes it. if doesnt, gonna idle/run funky!!
but this gonna be trial and error thing ^_^
 

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Discussion Starter · #15 · (Edited)
Not sure if my spark plug is the cause of high smog numbers.

Two reasons for this post: a) If you examine SK16R11 vs. K16TR11, you'll see that the SK16R11 has the longest life span while having the same spec as the K16TR11.

My update to my 2009 thread (corolla 1999 automatic CE); today is 10/5/2014, and apparently, I've had these SK16R11 plugs since 2009. Car runs great, however, smog check has never been pretty. I'm not sure if it's these plugs or something else because what I put in was the iridium in 2009. Prior owner did not smog the car before I buy the car, so I have no historical records until I replace all plugs with SK16R11. Other problem was that my ignorant coworked advised I pour mystery oil in the engine oil compartment before I replaced the plugs with SK16R11, so that may be a contributing factor to why my smog numbers are bad.

For the record, my card is the 2009 corolla without the vvti. currently using SK16R11, Iridium long life. I did read here about type of spark plugs I should be getting:

Spark plugs
Non-VVT-i: NGK BKR5EKB-11/Denso K16TR11, optionally BKR5EKPB-11/PK16TR11 platinum
VVT-i: NGK BKR5EIX-11 iridium

http://www.toyotanation.com/forum/1...002/294665-its-time-8th-gen-corollas-faq.html

and did read

http://www.toyotanation.com/forum/1...2/294665-its-time-8th-gen-corollas-faq-8.html

I did compare K16TR11

http://www.densoproducts.com/product.aspx?zpid=10923

with SK16R11

http://www.densoproducts.com/product.aspx?zpid=11132

BOTH plugs have these specs:
Reach: 19mm (3/4")
Gap: .044" (1.1mm)
Heat Range: 16
Resistor: Yes

So the question I have is, do you think my SK16R11 plugs are making my smog numbers high on my automatic corolla 99? Back then, when I bought the car used, it would run really bad on the freeway, and one of the plugs was oily. That's when I decided to replace all plugs with the SK16R11 and NGK wireset, thinking I would never have to ever touch the spark plug and wireset ever. It's possible that the bad numbers are due to prior abuse by the bad oily plug and the mystery oil that I poured into the engine oil.

Here's my 2009 smog:

@15mph %CO2 15.0; %o2 0.1;
HC PPM max 64, population average 9, my car 61;
%CO max 0.55, population average 0.2, my car 0.28
NO ppm max 477, population average 57, my car 404.

@25mph %Co2 15.1, %O2 0.0 ;
HC ppm max 47, population average 7, my car 15
%CO max 0.54, population average 0.03, my car 0.02
NO ppm max 764, population average 50, my car 29.

Passed in 2009, but very close to failing as my numbers approach the max allowable.

Then 2012 smog result (inspection reason being "high emitter profile")

@15 mph %CO2 15.0, %O2 0.1;
HC PPM max 64, population ave 9, my car 45
CO% max 0.55, population average 0.03, my car 0.28.
NO ppm max 477, population average 67, my car 447.

@25mph %CO2 15.0, %O2 0.0;
HC ppm max 47, population average 6, my car 22;
CO% 0.54, population average 0.03, my car 0.19;
NO ppm max 764; population average 62, my car 225.

I'm thinking of pouring SHOP LINE into the gas tank as recommended by Scotty Kilmer .. the guy claims he has passed hundreds of cars with this stuff. https://www.youtube.com/watch?v=5I71er1vxZQ

Actually, never mind about the Scotty Kilmer thing, see here:
https://www.youtube.com/watch?v=ZlPadYU2mPg
I'm not sure about other cleaners.

Update: don't ever try lacquer thinner: https://www.youtube.com/watch?v=ie1C07vnPXE
 
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