Denso Iridium spark plugs, No hype!, a real gain (Page 2/8)
FieroMaster88 SEP 09, 08:31 PM
Yeah, whats done to your 3.4 to get 200HP? Most 3.4 people are putting out 140 to 160 HP at the dyno.

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James Essar
88 Coupe 3.2L V6
Putting V8 Fieros in their place: My rearview mirror

Alex4mula SEP 09, 09:35 PM
He said his Fiero is running "just under 200HP". I guess almost all NA 2.8/3.4 Fieros run "under" 200HP

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Alex4mulas :-)
N2O! 3.4!

maryjane SEP 09, 09:47 PM
Well, 'IF' the electrode is pure iridium(doubtful) they are a bargain:
"At present, therefore, we know that either iridium or osmium is the densest known element, but the data do not yet allow selection between the two. Iridium costs about $500/troy ounce."
$12 per plug is a little rich for my blood.
2fn4wrds SEP 09, 10:21 PM
Shaun, who bit you in the a**. This Thread is'nt about me it's about spark plugs. Are you even reading what others are saying about the topic, Unwad! Who wants to communicate w/someone who sounds like an a-hole. To answer fiero88, I'm amazed that anyone would dyno less than 160 hp for properly running 3.4 unless it was tired. 160 is what their rated at, come on. Mine is a low milage 95'. The only internal work as yet is 1.6 full RR's & bolts. We did the normal intake mods( cutting out the air cleaner canister lid bolt support and intake box at fender ), some have said there is no hp gain w/intake boot completely removed. That's because now your sucking hot dry air instead of cool dense outside air. Anyway, added msd, and the secret weapon, a totally dial-in, propietary chip from the canadian company WESTERS G. Programed even down to the 89 octane I wanted to use. The oil I use is Castrol synthetic and six months ago started adding Z-max, yes the indy cars protectant and within a week added a smoothness to everything I asked the engine to do. This stuff works well too. Almost felt like I had the engine professionally balanced. Next was the DENSO IRIDIUM plugs. And last, had the smallest highest flow car sounds catalytic c. installed, another significant improvement I have friends that race at willowsprings and laguna seca who have driven my car and agree it is easily in 200hp territory. In Oct. when I install the KFTurbo from John's company in Canada that's when I'll have dynos done before and after. OK, time for something else. So far the choices we've made seem to be the right ones. OK that's it...be thankful to God were still here. Don't forget 9/11/01

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87'gt 3.4L

2fn4wrds SEP 09, 11:02 PM
One other important choice was going with ac/delco ignition module and pick-up. Even new modules from accel and others were failing.

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87'gt 3.4L

Dennis LaGrua SEP 09, 11:07 PM
Twelve dollars each for a foreign made Japanese spark plug. Wow, that buys alot of soy sauce or about 6 sets of AC plugs.
Really now. A spark of a cetain energy level measured in Joules, will be the same no matter what major manufacturer made plug is used. It could be argued that copper electrode plugs perform better due to their better conductance and will emit higher spark energy but even the stock system can shoot a spark over 2" long. Add an aftermarket multispark CD ignition box and the spark will remain high at elevated RPM's as well. There is plenty of spark available to properly ignite any cylinder charge with a slightly improved system.
I don't believe that any magic "snake oil" spark plug will give you more horsepower.
Furthermore, from that cowardly sneek attack by the Japs we lost a lot of good men at Pearl Harbor. I won't use any Japanese manufactured parts on my Fiero even if they gave them to me for nothing!

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87GT 3.4 Turbo Best 0-60 5.2 seconds
http://turbofiero.fierojoe.com/turbo.htm

2fn4wrds SEP 09, 11:09 PM
 
quote
Originally posted by 2fn4wrds:
[B]One other important choice was going with ac/delco ignition module and pick-up. Even new modules from accel and others did not have the same level of quality. A 180 thermo and 195 fan switch from Rodney D. round out the current engine related stuff we've done.

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87'gt 3.4L

2fn4wrds SEP 09, 11:28 PM
[QUOTE]Originally posted by Dennis LaGrua:
I don't believe that any magic "snake oil" spark plug will give you more horsepower.
Furthermore, from that cowardly sneek attack by the Japs we lost a lot of good men at Pearl Harbor. I won't use any Japanese manufactured parts on my Fiero even if they gave them to me for nothing!

Does that mean you are sure to never buy anything japanese ever. Be serious. What about your appliances or audio equipment...better check those. Snake oil I'm not interested in, but I do my share of research and many important industry people agree and the word has been out for a while that these plugs are giving racers lower times and higher output throughout the racing world. Do a search and read for yourself. Also read what a few responders to this thread say from their own experience. I know you've been at this for a long time and I respect that, but I take the time to research claims and sometimes there is a benefit.

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87'gt 3.4L

Oreif SEP 09, 11:36 PM

quote
Originally posted by Dennis LaGrua:

I don't believe that any magic "snake oil" spark plug will give you more horsepower.
Furthermore, from that cowardly sneek attack by the Japs we lost a lot of good men at Pearl Harbor. I won't use any Japanese manufactured parts on my Fiero even if they gave them to me for nothing!

HMM, Travis DYNO'd NGK's and showed a Hp increase over a set of new AC Delco Rapidfires on a stock 2.8L.
Did you ever dyno your turbo yet, Dennis? Many are still waiting.

Rogue_Ant SEP 09, 11:47 PM

quote
Originally posted by 2fn4wrds:
Does that mean you are sure to never buy anything japanese ever. Be serious. What about your appliances or audio equipment...better check those. Snake oil I'm not interested in, but I do my share of research and many important industry people agree and the word has been out for a while that these plugs are giving racers lower times and higher output throughout the racing world. Do a search and read for yourself. Also read what a few responders to this thread say from their own experience. I know you've been at this for a long time and I respect that, but I take the time to research claims and sometimes there is a benefit.


Sigh.
Everyone always wants a 'magic power solution' they can either poor into their fuel tank or something as arbitrarily simple.

The whole point of a spark plug is to ignite the fuel/air mixture. Once the combustion process starts the spark plug doesn't do squat until the next fuel/air mixture enters.

Now if your feeling a power increase its prob. because your old spark plugs were worn and the gap was too much for your ignition system to jump.
Just because its a smaller electrode and its made of iridium doesn't mean its going to make the arc any easier to produce. The main benefit of iridium is that it will last significantly longer then a standard copper electrode.

So if your lazy and don't want to change your spark plugs for 50k or more then spend that much on spark plugs...I will stick with tried and true standard NGKs.

Besides the only times I've ever seen an improvement was in forced induction cars (which I have one) and the power improvement can be attributed to just changing to a fresh set of plugs anyway.

Rogue