Spark Plugs

[CLS447]

How many of you guys are using the NGK Iridium spark plugs ?

If not , Why ?

[Resasi]

Happy to learn why I should.

[Russ Hobbs]

I do, and my engine purrs. My 503 runs better with the Iridium plugs than it did with the standard NGK plugs.

[Resasi]

Still ready to hear why this is so??

[Russ Hobbs]

I was told to try them by a rotax mechanic, I had problems with fouling. In all honesty, I had my carbs rebuilt at the same time and that in itself may have corrected the problem. I do believe the Iridium plug fires stronger and is less apt to foul, but I only have 5 hours on the plugs to base my gut reaction. Like I said my engine runs stronger and smoother for whatever reason and it's very obvious.
I admit the gentleman who tuned my carbs was pretty sharp.
Russ

[Resasi]

Sounds like an endorsement. I'll make a note, have a set to try out when the one's I have need replacing.

[CLS447]

The LEAF catalog says "for inverted engines".

Are they the best plugs ? The price might suggest this.

[CLS447]

Here's a bit on the Iridium plugs....


http://www.ngksparkplugs.com/products/spark_plugs/iridiumix.asp

[turbo]

in a new 0-360 lycoming 550 hrs ago. these are champions not ngk for the lyc. there is not a bit of wear yet. they should last the 2,ooo hr tbo. less maintenance, same cost by using the same plug for 2,000 hrs.