NGK (7544) CR7HIX Iridium IX Spark Plug gap?

[OregonDad]

How large of a gap do I set on a NGK (7544) CR7HIX Iridium IX Spark Plug for a 2008 Agility 50?

[sentinex]

You don't, iridium spark plugs do not require setting the gap, just install as is.

[wordslinger]

...really??

...anybody verify that?


             

[Vivo]

Maybe what was meant was Iridium plugs come pre-set and pre-gapped and doesn't need setting or re-gapping especially on stock engines. But it won't hurt if you check the gap of newly bought plugs. There might be some bad ones that come out the factory.   However, when modifying an high performance engine, you may re-gap depending on your engine's needs.

[wordslinger]

..in my experience, i have not seen significant performance increase with iridium, an any 4t i tried them in, but then, i've only tried a cpl different heat ranges with my setups...

..always been able to get real good performance without them, i reckon.,...

[juice]

The fine wire electrodes are VERY easily damaged , it is not recommended to gap them . I have even been told thay if you try to gap them they will be ruined . Good luck .

[wordslinger]

The fine wire electrodes are VERY easily damaged


....makes sense.....

[zombie]

I do know they recommend no gapping. BUT... If it is banged in shipping they are set to .7mm or .028". I have opened standard plugs to 3/16" using 60,000 volt coils so it is relative. You should Always use a brass feeler gauge when setting Iridium plugs as the wire type or the Stainless type can bend the fine tip.

[wordslinger]

should Always use a brass feeler gauge when setting Iridium plugs as the wire type or the Stainless type can bend the fine tip.

..makes sense......

[sentinex]

Maybe what was meant was Iridium plugs come pre-set and pre-gapped and doesn't need setting or re-gapping especially on stock engines. But it won't hurt if you check the gap of newly bought plugs. There might be some bad ones that come out the factory.   However, when modifying an high performance engine, you may re-gap depending on your engine's needs.

Correct.

[Vivo]

..in my experience, i have not seen significant performance increase with iridium, an any 4t i tried them in, but then, i've only tried a cpl different heat ranges with my setups...

..always been able to get real good performance without them, i reckon.,...

copper = lasts long
platinum = lasts longer
iridium = lasts even longer

So, the better the metal, the longer it lasts. Performance are the same. 

[juice]

Performance is also improved . bikeadvice.in/iridium-spark-plugs/ .

[baddi]

If its not damaged in shipping, i wouln't consider gabbing it, as iridium is very durable and will last so long, that buying a new one wont kill your purse, as they last 3 times as long, but only costs the double.

[blue]

I recap all my plugs ha never know. .7 to .8mm  sometimes .71/2

[OregonDad]

Performance is also improved . bikeadvice.in/iridium-spark-plugs/ .

According to that article I should also get a high energy ignition coil/wire/plug cap to improve starting, acceleration, and fuel mileage.