What's Different Between Denso Iridium SP in SK20 & IK20

[2BDriver]

Dear All,

 

Any Denso Iridium Spark Plug Expert user can advice the differences with SK20 & IK20 ?

 

I were told by Ric-Tat @ owen road that the IK20 is now out of stock, but SK20 is available, I'm wondering the same Heat Range numbered for "20" is for Hot Engine application.

 

Kindly advice.

[Ladykillerz]

The SK20 has 0.7mm electrode and is designed as a long life plug, while the IK20 has 0.4mm.

 

Link

 

Denso_Spark_plug.xls

[2BDriver]

The SK20 has 0.7mm electrode and is designed as a long life plug, while the IK20 has 0.4mm.

 

Link

 

The gap of 0.7 to 0.4 is so wide, does it affect the application into Engine ?

 

 

 

[Zuoom]

strange, normally SK series harder to find. at least that's what i encounter many years back.

[Ladykillerz]

The gap of 0.7 to 0.4 is so wide, does it affect the application into Engine ?

 

0.7mm will last longer; 0.4mm is finer and thus, better efficiency.

if you ask me, i will opt for the typical copper spark plug and change every 10,000km.

cheap and good.

 

i think mine is using platinum spark plugs and come with stock.

 

to each its own.

[2BDriver]

strange, normally SK series harder to find. at least that's what i encounter many years back.

FYI the unit price is cheaper than IK20 series, they quoted me SK20R11 for $14/pcs/Included GST.

 

[Trex101]

FYI the unit price is cheaper than IK20 series, they quoted me SK20R11 for $14/pcs/Included GST.

 

Slightly cheaper then IK20 which is going for $15/pc.

[QQDreamer]

hi bros,

 

Just to add on... for my ride if my owner manual says that the minimum gap os plus minus 0.8mm for spark plugs will it be possible to use a spark plug that is say 1.0mm in gap? please advise. very noob to this.

[Escksu]

The gap of 0.7 to 0.4 is so wide, does it affect the application into Engine ?

 

ITs not the gap. ITs the width of the center electrode.

[QQDreamer]

which is better? wider gap or narrow gap?

[Escksu]

which is better? wider gap or narrow gap?

 

Too small gap it may not properly ignite the fuel. Too wide it will misfire. It has to be optimum.

[QQDreamer]

Too small gap it may not properly ignite the fuel. Too wide it will misfire. It has to be optimum.

 

 

Sorry am noob to this.. can advise how to know if its optimum? How to gage?