Iridium spark plugs for Tacoma

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Old 22 Sep 2009, 10:23 pm   #1 (permalink)
studio
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Default Iridium spark plugs for Tacoma

I've tried various types of plugs over the years in different engines
with less than satisfactory results. So I wasn't exactly optimistic
about trying the NGK Iridium plugs in my stock aspirated V-6 2004
Tacoma with OEM NGK plugs, but I tried them anyway.

Cost me about $44., and took me 1 hour to change them out.
For the first time I was actually satisfied with the results. It's a
very subtle difference to be sure, but I could tell they made the
engine run smoother and with better throttle response.

They cost about 4 times more than OEM, but they will last 4 times
longer and give better overall performance results.
I definitely recommend these plugs and give them 2 thumbs up.

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Old 23 Sep 2009, 08:13 am   #2 (permalink)
Handyman
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Default Re: Iridium spark plugs for Tacoma

On Sep 22, 7:23*pm, studio <tl...@hotmail.com> wrote:
> I've tried various types of plugs over the years in different engines
> with less than satisfactory results. So I wasn't exactly optimistic
> about trying the NGK Iridium plugs in my stock aspirated V-6 2004
> Tacoma with OEM NGK plugs, but I tried them anyway.
>
> Cost me about $44., and took me 1 hour to change them out.
> For the first time I was actually satisfied with the results. It's a
> very subtle difference to be sure, but I could tell they made the
> engine run smoother and with better throttle response.
>
> They cost about 4 times more than OEM, but they will last 4 times
> longer and give better overall performance results.
> I definitely recommend these plugs and give them 2 thumbs up.


I wonder if you would have seen the same results from a new set of
stock plugs
or Platinum Plugs as you are comparing your results with the old plug
performance.
Like you, I've tried a variety of plugs over the years and I keep
coming back to Bosch
or Champion Platinum depending on cost. Always remember to use anti-
seize compound
when installing long life plugs. It will save a lot of frustration
years down the road when it
is time to remove them!
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Old 23 Sep 2009, 10:06 am   #3 (permalink)
Desertphile
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Default Re: Iridium spark plugs for Tacoma

On Wed, 23 Sep 2009 05:13:23 -0700 (PDT), Handyman
<sgt_az@yahoo.com> wrote:

> On Sep 22, 7:23*pm, studio <tl...@hotmail.com> wrote:
> > I've tried various types of plugs over the years in different engines
> > with less than satisfactory results. So I wasn't exactly optimistic
> > about trying the NGK Iridium plugs in my stock aspirated V-6 2004
> > Tacoma with OEM NGK plugs, but I tried them anyway.
> >
> > Cost me about $44., and took me 1 hour to change them out.
> > For the first time I was actually satisfied with the results. It's a
> > very subtle difference to be sure, but I could tell they made the
> > engine run smoother and with better throttle response.
> >
> > They cost about 4 times more than OEM, but they will last 4 times
> > longer and give better overall performance results.
> > I definitely recommend these plugs and give them 2 thumbs up.


> I wonder if you would have seen the same results from a new set of stock plugs
> or Platinum Plugs as you are comparing your results with the old plug performance.


Drivers tend to fool themselves into believing more expensive
items are better: they tend to "feel superior performance" when it
isn't happening. The only way to know for sure is double-blind
tests where the driver does not know which spark plugs are in the
vehicle, or using expensive lab equipment.

> Like you, I've tried a variety of plugs over the years and I keep coming back to Bosch
> or Champion Platinum depending on cost. Always remember to use anti-seize compound
> when installing long life plugs. It will save a lot of frustration years down the
> road when it is time to remove them!



--
http://desertphile.org
Desertphile's Desert Soliloquy. WARNING: view with plenty of water
"Why aren't resurrections from the dead noteworthy?" -- Jim Rutz
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Old 23 Sep 2009, 12:46 pm   #4 (permalink)
studio
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Default Re: Iridium spark plugs for Tacoma

On Sep 23, 8:13*am, Handyman <sgt...@yahoo.com> wrote:
> * I wonder if you would have seen the same results from a new set of
> stock plugs


The engine had 11,000 miles on at the time of changing the plugs. I
saw no appreciable difference in performance over that time. All the
old plugs with the 2 electrode design were in very good condition when
I pulled them.

> or Platinum Plugs as you are comparing your results with the old plug
> performance.


While I didn't try the Platinum ones, the Iridium ones did give me
results I was very satisfied with.

> Like you, I've tried a variety of plugs over the years and I keep
> coming back to Bosch
> or Champion Platinum depending on cost. *Always remember to use anti-
> seize compound
> when installing long life plugs. *It will save a lot of frustration
> years down the road when it
> is time to remove them!


I did use anti-seize compound.

Desertphile wrote:

> Drivers tend to fool themselves into believing more expensive

items are better: they tend to "feel superior performance" when it
isn't happening. The only way to know for sure is double-blind
tests where the driver does not know which spark plugs are in the
vehicle, or using expensive lab equipment. <

I bought the Iridium plugs about 6 months before installing them.

About a week before installing them I was watching some hot rod tv
show where they were testing OEM vs, Iridium spark plugs in a
performance engine with various lab test equipment.
The results showed not only a 4 horsepower gain (in a 350hp engine
though), but also a very slight (.07%) increase in fuel economy.
They then showed the difference in spark the two plugs make...the
Iridium plug was much brighter and had a much thicker spark than the
OEM plugs.
But the good thing I found out is; whether the engine is normally
aspirated or performance, these plugs will work equally well.

Like I said before, I was a skeptic, but I'm absolutely sold on the
superiority of Iridium plugs.
I'm just passing my personal experience to others who want the best
for their trucks.
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Old 23 Sep 2009, 07:14 pm   #5 (permalink)
studio
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Default Re: Iridium spark plugs for Tacoma

I couldn't find the particular video I seen, which was just an engine
in a testing facility with lots of testing equipment.
But there's a few others at YouTube expounding on the virtues of
Iridium plugs.

Not a Toyota truck, but the results are are going to be near the same
in almost any engine.

Harley Davidson motorcycle dyno test.
1 day old Stock plugs = 92.5 horsepower.
New NGK Iridium plugs = 95.7 horsepower.

3 horsepower gain in the 60 seconds of time it takes to change them in
the Harley.

http://www.youtube.com/watch?v=0A9_7RtFoZ4

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Old 23 Sep 2009, 08:02 pm   #6 (permalink)
clare@snyder.on.ca
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Default Re: Iridium spark plugs for Tacoma

On Wed, 23 Sep 2009 05:13:23 -0700 (PDT), Handyman <sgt_az@yahoo.com>
wrote:

>On Sep 22, 7:23*pm, studio <tl...@hotmail.com> wrote:
>> I've tried various types of plugs over the years in different engines
>> with less than satisfactory results. So I wasn't exactly optimistic
>> about trying the NGK Iridium plugs in my stock aspirated V-6 2004
>> Tacoma with OEM NGK plugs, but I tried them anyway.
>>
>> Cost me about $44., and took me 1 hour to change them out.
>> For the first time I was actually satisfied with the results. It's a
>> very subtle difference to be sure, but I could tell they made the
>> engine run smoother and with better throttle response.
>>
>> They cost about 4 times more than OEM, but they will last 4 times
>> longer and give better overall performance results.
>> I definitely recommend these plugs and give them 2 thumbs up.

>
> I wonder if you would have seen the same results from a new set of
>stock plugs
>or Platinum Plugs as you are comparing your results with the old plug
>performance.
>Like you, I've tried a variety of plugs over the years and I keep
>coming back to Bosch
>or Champion Platinum depending on cost. Always remember to use anti-
>seize compound
>when installing long life plugs. It will save a lot of frustration
>years down the road when it
>is time to remove them!



My experience with Bosch Platinums over the years has been less than
satisfactory. Lots of compression seal problems and resulting
misfires.

NipponDenso Platinums are the Cat's Ass for Toyotas. NGK Plats are
pretty good too. Dual Plat is only "required" for waste spark systems
(double ended coils), which Toyota has pretty well gotten away from
(if not totally)

I put Iridiums in my Chrysler PT Cruiser - and a couple months later I
developed a #1 misfire at idle.. I ruled out plug wires and coils by
switching them, and figured I'd switch plugs between #1 and #4 to see
if the misfire followed the plug.

Misfire went away.

It appears ONE of the plugs wasn't happy firing "backwards".

That's the only experience I've had with Iridium or "fine wire" plugs
in the last 20 odd years.
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Old 23 Sep 2009, 10:56 pm   #7 (permalink)
M. Balmer
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Default Re: Iridium spark plugs for Tacoma




About a week before installing them I was watching some hot rod tv
show where they were testing OEM vs, Iridium spark plugs in a
performance engine with various lab test equipment.
The results showed not only a 4 horsepower gain (in a 350hp engine
though), but also a very slight (.07%) increase in fuel economy.
They then showed the difference in spark the two plugs make...the
Iridium plug was much brighter and had a much thicker spark than the
OEM plugs.



So they glow brighter and in a 150 hp 4 cyl you'd see a 2 hp gain? This
reminds me of teenage boys comparing a certain part of the male anatomy and
one crowing because his was 2mm longer. I think I will stick with the $3.00
dealer plugs. Let's see. What do those cost per mile over a 30,000 mile
change interval? Good luck getting those Iridium "glow plugs" out after
they've been in for 50,000 miles or longer -anti seize or not.

you don't have one of these, do you?
http://www.vorteccyclone.com/index.html


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Old 24 Sep 2009, 10:48 pm   #8 (permalink)
studio
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Default Re: Iridium spark plugs for Tacoma

On Sep 23, 10:56*pm, "M. Balmer" <boogerpic...@wazoo.net> wrote:
> So they glow brighter and in a 150 hp 4 cyl you'd see a 2 hp gain? This
> reminds me of teenage boys comparing a certain part of the male anatomy and
> one crowing because his was 2mm longer. I think I will stick with the $3.00
> dealer plugs. Let's see. What do those cost per mile over a 30,000 mile
> change interval? Good luck getting those *Iridium "glow plugs" out after
> they've been in for 50,000 miles or longer -anti seize or not.
>
> you don't have one of these, do you?http://www.vorteccyclone.com/index.html


lol...nope, don't have or believe in cyclone thingy's.

The Iridium plugs are designed to last 100,000 miles.
And I don't believe I'll have any problems removing them at that
point. I've dealt with tough plugs before.

The OEM plugs will work just fine. Indeed the ones I removed were in
perfect condition for the time they were in.
Like I said twice before, I was a skeptic of plugs touting they could
do so much....but I'm not a skeptic anymore, and neither are a growing
amount of professional mechanics.
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Old 24 Sep 2009, 10:53 pm   #9 (permalink)
studio
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Default Re: Iridium spark plugs for Tacoma

On Sep 23, 8:02*pm, cl...@snyder.on.ca wrote:
> I put Iridiums in my Chrysler PT Cruiser - and a couple months later I
> developed a #1 misfire at idle.. I ruled out plug wires and coils by
> switching them, and figured I'd switch plugs between #1 and #4 to see
> if the misfire followed the plug.
>
> Misfire went away.
>
> It appears ONE of the plugs wasn't happy firing "backwards".


Strange that it would develop an unhappiness months later. Or that one
plug would be unhappy and the other not.
Sounds more like a faulty wire connection problem to me.

> That's the only experience I've had with Iridium or "fine wire" plugs
> in the last 20 odd years.


Did you check your gas mileage at all, or notice any other
improvements?

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Old 24 Sep 2009, 11:20 pm   #10 (permalink)
M. Balmer
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Default Re: Iridium spark plugs for Tacoma


Well I must be a traditionalist. I have 153M on my 98 (auto) 4x4. I got
150M on my original oxy sensors (only changed them because they were old!)
and CV boots. Have always used Toy oil filters, plugs and that pink coolant.
Getting 20mpg even though the gov says it's a clunker. Plan on keeping it
another 12 years. The original seat fabric is starting to wear a little
thin; other than that it looks like new. Oh yeah; no body rust either. Of
course our 7" of annual precip (all rain) helps too.


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