Art,

Iridium spark plugs will last for 2,000 hours. With the Champion plugs, at 500 to 800 hours, you will either have to buy massive plugs to swap the resisters or buy new iridium plugs. I went to the junk yard and pulled good resisters out of used massive plugs. The Tempest plug resisters will stay good for the life of the plug.

Other than the resisters, you will not be able to tell the difference between the iridium plugs. Make sure that you don't get the older platinum type.

To buy:

For good service with spark plugs call Linda Lou, Inc. in Memphis, Tn. All Linda sells are plugs. She has replaced dropped plugs for me in the past. Linda also gave me the number of a Champion rep. I will talk to him in the near future and see if resisters or replacements are available for the high resistance Champion plugs.

800-824-9912

Her prices for plugs are:

Tempest: $51.00
Champion: $89.95

Lorn

On Feb 7, 2012, at 6:00 AM, Lancair Mailing List wrote:

> From: Art Jensen <flycassutts@yahoo.com>
> Date: February 6, 2012 7:50:13 PM EST
>
> All,
>
> Would like to hear from everyone using the tempest spark plugs. Are you satisfied with them? Do you think they are better than Champion, and why? Are you using the massive or fine wire? Help me make an informed decision.
>
> I am getting ready to order a new set of plugs. I currently use the RHB32E by Champion in my IO-550-N. I have no complaints with these plugs but wonder if the Tempest with their one piece resistor design is better as their ad would suggest.
>
> Thank you for your input
>
> Art Jensen

--
Lorn H. 'Feathers' Olsen, MAA, ASMEL, ASES, Comm, Inst
DynaComm, Corp., 248-345-0500, mailto:lorn@dynacomm.us
LNC2, FB90/92, O-320-D1F, 1,800 hrs, N31161, Y47, SE Michigan