spark plug question
- Thread starter pokeyman
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gamefreakgc
Elite Member
Yes, I run them as well as many others of us who are supercharged. They last about 25k-30k miles due to the waste spark ignition system toyota has, makes they wear out prematurely. On my Nissan I just replaced the iridiums for the first time after 120k miles. Huge difference.
If you don't have forced induction don't bother with anything other than the dual ground copper DENSO's or NGK's that the manual calls for.
If you don't have forced induction don't bother with anything other than the dual ground copper DENSO's or NGK's that the manual calls for.
beklemmung
New member
gamefreakgc, is your last statement for people who are supercharged, or any 3rd gen owner? For those of us on an essentially stock non-supercharged setup, are these preferable to copper?
https://www.rockauto.com/en/moreinfo.php?pk=222807&cc=1272596&jsn=497
https://www.rockauto.com/en/moreinfo.php?pk=33251&cc=1272596&jsn=498
https://www.rockauto.com/en/moreinfo.php?pk=222807&cc=1272596&jsn=497
https://www.rockauto.com/en/moreinfo.php?pk=33251&cc=1272596&jsn=498
Brian.
Member
As simply put as possible.
No
It's like running 92 octane in a stock 4runner, a complete waste.
beklemmung
New member
Thanks Brian, that's an analogy that even someone as automotively-challenged as I am can understand.
gamefreakgc
Elite Member
I didn't word that last sentence very well did I? I don't always think about how many don'ts I do or don't put in a sentence. Don't.
Supercharged = iridium
Everyone else = copper.
And Brian, I run 91 octane with water/meth that brings that number up to 102 octane :biggrin2:
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Brian.
Member
So, that came stock where abouts in the world? :wink2:
I am SOOOooooo very thankful I'm not a HP junkie. I started out that way, sorta, about 30 years ago with motorcycles and eventually grasp the idea of "more fun to ride a slow bike fast". Never had the HP sickness in the 4-wheel world... my wallet thanks me for that every time I buy fuel.
gamefreakgc
Elite Member
Ha, I totally understand. I actually haven't put at much in this as one might think, there's a lot of people who have spend a whole lot more on offroad bumpers, winches, etc. than I have on performance parts. I really like these 4Runners, so wanted to make something unique and a blast to drive. So far so good!
I don't do motorcycles though. Too many friends with life-changing injuries or dead from too much speed. I got kids at home.
19963.4lsr5
New member
That would be a tuff decision for me to make had I had any children up to now. Giving up motorcycles.......I’ve been riding since 1984 on the street. Even roadraced a 1993 ZX7R from 95 to 98. In theory I can still have a child to pass my knowledge on too. If that happens, I got some thinking to do.
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19963.4lsr5
New member
For the record the 96 had iridium plugs when I bought it. I put the twin electrode plugs in and didn’t notice a difference.
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dogtail
New member
If you go to Autozone and ask for the 3.4L plugs they have a list of single electrode plugs, asked whats up with that, they said they fit. I tried the iridium singles before, didn't last long. I just use the Denso doubles just as Toyota designed it as.
BoomerBob
New member
Okay, I have a new set of double ground Toyota OEM spark plugs, but when I check the gap; they are all different and one side has a wider gap than the other side. They are not uniform at all. Some have a gap of less than .020 on one side.
My question is what gap should I set these electrodes to? I'm assuming it's the distance from the center post to the top of the electrode.
My question is what gap should I set these electrodes to? I'm assuming it's the distance from the center post to the top of the electrode.
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BoomerBob
New member
Thank you. That's what I'll do then.
hamsandwiches
New member
Yep, Denso duel electrodes gapped to .44
AZBub
New member
I had iridium singles. They lasted much longer and I got slightly better fuel economy than the old fashioned copper/dual electrode ones. of course in the time these trucks were new an Iridium plug was $30-60 a piece....
A good read... Iridium vs platinum vs cooper spark plugs
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