Replaced Iridium with Platinum Plugs

[Thermo1223]

I don't believe you're straining anything at least not with Coil on Plugs.

Maybe a standard single coil & distributor setup but not coil on plug. Coil on plug was specifically built for lower maintenance and improved performance.

I really like to see those expensive ignition components as well.

If less than $100 is to much for you than maybe so is owning a car.

 

[GMBoy]

Originally Posted By: Thermo1223
I don't believe you're straining anything at least not with Coil on Plugs.

Maybe a standard single coil & distributor setup but not coil on plug. Coil on plug was specifically built for lower maintenance and improved performance.

I really like to see those expensive ignition components as well.

If less than $100 is to much for you than maybe so is owning a car.


All coils perform the same way and are designed to fire at a certain gap. As the gap gets wider (and out of spec) it makes the ignition system work harder to make the spark jump. Period. Easy to understand and no changing this fact. Yes, todays coil on plug systems and so forth are very powerful. But they do get stressed when working OUTSIDE their design limits. Trust me on this - I work for GM and deal directly with GM powertrain engineers daily. Ignition modules and coils can cost upwards of $100-500+ depending on application.

And I do not appreciate the sly remark about $100 and maybe I shouldn't own a car. I just refuse to pay for unneccessary items. For the record, I own 7 cars of which include a Corvette and new Cadillac and 3 Harleys. I also make an excellent salary thank you very much.

 

[Thermo1223]

Yes $500 on $80,000 sports car but not a $15,000 economy car.

All coils do not perform the same way and are designed with tolerances as you stated. Working outside those tolerances will cause it fail at x time. There is a reason they specd 100k intervals because if the gap does widen the coil can & will compensate for it while working just fine. If not they would have specd lower.

What is unnecessary about decreased maintenance cost over the life of a vehicle? Maybe people tend to think cars should work regardless of maintenance but I don't see having to replace an ignition coil after 100k as bad. 100k for some people is a looong time.

I'll trust my owners manual.

I stand by that if paying $100 on a part that fulfilled it's use is too much than yes I don't think owning a car is right for that person.

 

[willix]

Originally Posted By: Robenstein
http://www.lsgbrisk.com/

Willix why go E3 when you can go Halo?
Why would you use synlube with MMO & STP out there? That Halo is quite a thing 28% increase in mpg.

 

[PandaBear]

Originally Posted By: GMBoy
Originally Posted By: willix
The point is they don't required service according to the schedule for 100,000 miles. They often last that long. That would be fact. I never owned a car for more than 70,000. Every car I have ever owned has had the plugs replaced as good measure as part of a initial maintenance that one would do to a used car.


Automakers list 100k tune-ups for one reason - to make the car appear low maintanence to customers. Secondly, they use long life plugs to last thru the emmissions warranty. Yes, some plugs do last the 100k (but how is that car running and how much strain on the ignition system?) but many do not. You state that they last 100k as a fact yet you change them out at +/-70k (which is good practice) so where is the "fact" if you never went the full 100k?



Agree here. My dad's Taurus had a plug went bad at 60k, platinum too suppose to last 100k. Those plugs that didn't fail, they have the electrode worn down so much they look like they are filed down considerably.

If you take them out and inspect or gap them they may last 100k, but I wouldn't just leave them in as is, especially on a car that are famous for plugs not going that far (i.e. Taurus)

 

[willix]

These are super sonic http://www.enginebrain.com/

 

[wiswind]

Toyota uses NKG and DENSO as OEM.
My 2003 Sienna owner's manual says to use NKG or DENSO....and give the specific part numbers.
There is also a sticker on the underside of the hood that states to use ONLY iridium plugs.....and the same sticker also states NOT to gap the plugs.
The DENSO SK20R11 plugs that I just installed came with a sleeve over the end of the plug to prevent the gap from being bumped during shippment.

 

[Robenstein]

Yeah my Scion came sans owners manual and had no guidelines on the motor or under the hood.

I will pull one at my next oil change and give it a look see. If I have the spare cash I may just swap them for a set of Iridiums.

 

[mechanicx]

I like NGK better than Denso. The NGK iridiums can be gapped if necessary according to NGK, but the Denso use a u-channel groove on the ground electrode and are not to be gapped.