Ruthenium plugs

[AlleyCat]

Just put some Ngk ruthenium plugs. Left them pre gapped at .032. Car makes 1k to rear wheels.Wow! Have not taken it to track. 111 degrees but she loves them! Starts easier and the power is incredible. But then again I had brisks in there and I don’t think she liked them. I think the part number was 94320. Rock auto had the best price.

 

[vortecd]

Haven't heard of those. I went with the 2309 iridium.

 

[AlleyCat]

93420. My dyslexia.

 

[vortecd]

Ran across this story. It says it is a less expensive option over iridium yet they are almost $3 more a plug over iridium. Any reason you went with stock heat range?

https://vehiclefreak.com/ruthenium-...expensive than,high degree of heat resistance.

 

[AlleyCat]

Three reasons
I run e85 100 percent of the time
When ever I pull the plugs that are colder they are black and not tan. That is with the afr on.
I never run half mile or mile events.

 

[drag racer]

Oh yea, they're great, latest hi-tech alloy plugs. Put 'em in my daily, and have inventory on the shelf for the Hemi's when the time comes.

 

[AlleyCat]

Did you leave them at .032? I did. No problems.

 

[drag racer]

in the case of my daily N/A Chevy, I think I went .040-.045, even though the OE spec is something crazy like .060

 

[moparjim]

The NGK rep gave me a set. I had them in my old motor. Unfortunately had so many other things going on with the car it was hard to say if they were good.
I did suggest them to HPindy and he has used them in his car.
I will have another set for the next time on the shelf soon.

 

[Illegal_Demon]

What sort of HP boost are we talking about for our cars (hellcat, demon, redeye SC motors)?

 

[AlleyCat]

I would say none. But if you are needing a change of plugs it is an alternative. You may be down on horsepower with fouled or worn out plugs.