[Cobvs]

Hi

I am looking to import Denso spark plugs for my Pajero. The plug is the Denso Iirirdium power plug. I know lots of gadgets claim more power but Denso is an established company who also manfucatures OME parts on the Colt and Pajero(fuel pump on my vechicles is Denso). the only backdraw here is the price which is abit steep but i'm willing to take a chane since it will also last longer than normal plugs. Some write up:

Iridium plug

14mm Thread Size, 19mm (3/4") Reach, 13/16" (20.6mm) Hex Size, Gasket Seat, Resistor, Removable Terminal Nut, 0.4mm Iridium Projected Center Electrode, Tapered Cut U-groove Ground, .043" (1.1mm) Gap, Heat Range 16

Denso's Iridium power spark plugs help your vehicle achieve unparalleled performance. It alters the belief that a mere spark plug can add power and mileage. This is done by combining an ultra-fine 0.4mm diameter Iridium center electrode with a tapered cut U-groove ground electrode. Iridium conducts electricity better than platinum, however what makes it exceptional is it's also 6x harder and 8x stronger than platinum. Because of this, the center electrode can be machined down to 0.4mm. This ultra-fine iridium center electrode provides superior ignition performance during acceleration and top cruising RPM. The U-groove ground electrode creates a larger, brighter flame kernel. The tip of the ground electrode has been tapered which further improves firing performance by reducing quenching. All of these features combine to give more horsepower to your motor.

The price depends on the quantity and postage. The price per plug goes down when ordering more than 50 but the postage goes up considerably. Roughly you look at R125 a plug. Is anyone interested and please I'll also appreciate your input and comments on the plug itself.

[Cobvs]

Ignitability That's a Cut Above


With DENSO's very own U-Groove ground electrode for better spark performance
To increase ignitability, the important point is to let the flame kernel caused by the spark to grow to a large size. Normally, this can be accomplishing by widening the spark gap, however this causes spark voltage to increase, which has the opposite effect. IRIDIUM POWER uses DENSO very own U-Groove ground electrode to realize a superb ignitability while maintaining spark voltage at low levels.

Improved Horse Power(1)


Get more power with an optimal combustion cycle.
IRIDIUM POWER has a low required voltage and a high ignitability, resulting in less misfiring and no spark, the outcome being a dramatic improvement in combustion. Engine output is thus increased. The findings of a bench test using a motorcycle engine to show the improved combustion from IRIDIUM POWER is shown on the below. Compared to normal plugs, a 0.5ps (1.4%) improvement is seen in output at 110km/h.

Improved Acceleration


Increased response and acceleration performance.
IRIDIUM POWER best demonstrates its performance improvement during acceleration.IRIDIUM POWER has a 0.4 mm diameter iridium center electrode and a specially shaped ground electrode. These features combine to achieve higher ignitability and require lower spark voltage than ever before. This enables high-response driving with fewer misfires than under higher required voltage spark conditions, and fewer misfires when ignitability is difficult. As a result, acceleration improves in comparison with normal plugs.

Improved Horse Power(2)


The 0.4mm center electrode increases output under various driving conditions.
The power produced by the 0.4mm dia. iridium center electrode is IRIDIUM POWER unmatched by other plugs. The graph below compares the resulting power when IRIDIUM POWER is installed compared to other high performance plugs. Using a 0.4mm dia. fine center electrode, there is more power compared to 0.8mm and 2.5mm dia. plugs. This is what makes the difference in acceleration and in your lap time.

Improved Fuel Mileage


Even during idling ignition is assured, with less fuel consumption and less noise.
The good ignitability from the fine electrode (0.4mm) of IRIDIUM POWER draws out much more performance from the engine. Comparing a normal plug (W20FS-U) with an IRIDIUM POWER(IWF22) on a 2 cycle 50cc engine, fuel consumption improved from 41.74km/L -> 43.69km/L, an improvement of about 5%.
Note: Mileage measured using a chassis dynamo; actual driving results under normal conditions may vary.

The Secret behind DENSO's Iridium Patent!


Plug electrodes conventionally have used nickel and platinum. These were not pure metals, but alloys containing other metals. Depending on the composition of the alloy, the matrix material's properties can be maximized. Using the same approach, iridium is alloyed with rhodium. The rhodium layer covers the iridium, improving the properties of the iridium. This iridium/rhodium technology was recognized by the Patent Offices of Japan and the UK, and in January 1999, a patent was granted in each respective country. (Patent Number - Japan: 2877035, UK: 2302367). Because DENSO had this patented technology, DENSO was able to make dia. of the iridium down to 0.4mm.
The most important things for plug performance are ignitability and sparkability. To make the electrode as fine as possible is the goal of spark plug manufacturers worldwide, and DENSO has taken the lead, succeeding the commercializing the 0.4mm dia. center electrode plug.
The finer the electrode, the more concentrated the electrical potential and the stronger the electrical field strength becomes, leading to a lower required voltage. This results in a steady combustion in a variety of driving conditions, and better starting and acceleration for the engine.

A Pattern from Spark to Ignition.


Electrodes have a quenching (cooling) affect (where the heat of the ignited flame kernel is taken away by the electrode). This cooling affect is greater with larger electrodes, sometimes causing the ignition to stop short of the stage in Figure 4. To improve ignitability, the contact area between the electrode and the flame kernel must be reduced. Improved ignitability is why IRIDIUM POWER electrodes have been made fine as possible.

[paw_by_paw]

Hi Cobvs,
Is this price vat incl or excl and how long before delivry .?
Second question is that for all the motors ?
Please let me know I am very interested .
Regards

[colinken]

Ive used iridium denso plugs on bikes for many years now my gsxr1000 runs with these plugs but i will garentee you will not notice a diffrence in performance longivity yes. on some of the bikes these plugs cost more than R500.00 per plug i usually just replace them with NGK as most customers refuse to pay those prices. No need to import them yourself just get them from craigs in Maitland
Colin

[Cobvs]

Thanx Colinken

craigs only keep motorcycle plugs. I do not expect a huge increase or boost when changing the plugs but think in conjunction with some other changes like a free flow/branches it might have an overall improvement. The irirdium power plug claim to have an influence across the power range thus you might not feel it as a sudden increase in power. I am still willing to give it a go.

i'm still looking at different places to import from UK or .com.

[soutie]

Thanx Colinken

craigs only keep motorcycle plugs. I do not expect a huge increase or boost when changing the plugs but think in conjunction with some other changes like a free flow/branches it might have an overall improvement. The irirdium power plug claim to have an influence across the power range thus you might not feel it as a sudden increase in power. I am still willing to give it a go.

i'm still looking at different places to import from UK or .com.

Why not try the NGK iridium option?? I believe you can get them locally...

[colinken]

My little experiment

[Cobvs]

I'm not a spark plug expert so found it very interesting. I also do understand that manufacturers will claim the stars from their products and it is good to have it measured in some way. I do not know what price the iridium NGK go for locally, will check. So far I can get the Denso IR "power" plug imported for about R143 a plug .

If I know it's a Denso super power plug I will feel the difference then lol

I also picked up something about a Pulse spark plug from Pulstar. Do you know anything about that. It apparently stores the extra current in a small coil? inside the plug and then send a burst/pulse with higher output than normal plug ...

[colinken]

Hi Cobvs I spoke to Donnald at Craigs he can get plugs for you but you will have to order 10 at a time how ever i think your price is better

I have not yet heard of pulstar. But do a google on stromberg this might intrest you my mate has it fitted to his bakkie and he swears by it

[Cobvs]

Midas don't know about NGK Iridium plugs. Diesel Electric knows but don't have plugs for Pajero due to the wide (1.1) gap. Will look further.

Just a question about the feel - will you really feel a difference on a 1000CC motorbike if their is a small increase in power/torque?