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From: studio on 22 Sep 2009 22:23
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.

From: Handyman on 23 Sep 2009 08:13
On Sep 22, 7:23 pm, studio <tl...(a)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!
From: Desertphile on 23 Sep 2009 10:06
On Wed, 23 Sep 2009 05:13:23 -0700 (PDT), Handyman
<sgt_az(a)yahoo.com> wrote:

> On Sep 22, 7:23�pm, studio <tl...(a)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
From: studio on 23 Sep 2009 12:46
On Sep 23, 8:13 am, Handyman <sgt...(a)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.
From: studio on 23 Sep 2009 19:14
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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