Denso iridium plugs?

[TurboTnZ06]

Anyone tried these in a 10 second or faster Turbo Buick? Saw them in jeg's online catalog next to the autolite and champion racing plugs.

"Denso Iridium Power Spark Plugs"

 

[GNVYUS 1]

I have read a few posts from fast turbo imports that are blowing the electrode within 3k miles, pics were included. Sounds like forced induction is putting a hurt on the small electrodes.

Any GN's back that up?

 

[TurboTnZ06]

Thanks for the info. I always use the Delco 42's but saw the Denso's for sale and was curious.

 

[1of1035]

been running those plugs for over a year with no complaints. Not sure what I run but I should be somewhere in the mid-low 11's. I also noticed a little bit smoother of a idle once I started using the denso's.

 

[Ormand]

The platinum/iridium plugs work great for three cylinders on a GN. The other three cylinders, the ones that fire "backwards", will fire better with regular plugs. Spark does not jump well to the tiny tip of a platinum type plug. Jumps FROM it well, but not TO it. As noted above, you CAN run them, but they won't make as much power dependably as the ACs.