Which Spark Plugs To Run On the Street?

[earossi]

About got the long block back together in my 12 month rebuild of my 3.6 out of my 98. The engine is stock, except for 52 mm intake valves and a Webcam RS hydraulic cam. Will also be installing a 200 cel cat. What plugs should I run in this motor? My last set, prior to the rebuild were NGK BKR6EK twin electrode plugs. They seemed to run well and looked fine on disassembly; however, the motor had 110k miles on it at that time. Now, essentially a new engine. Your thoughts would be appreciated. If you have an opinion on spark plug make, can you also spec out the model of plug?

[Steve]

Hi Ernie,

We run either FR6DTC or FR5DTC, depending on how the car is used. For general all-around use in N/A 993's ,the FR6DTC is perfect. FR5's are used in TT's.

[earossi]

Thanks Steve. I did a Google search to find where I could buy the FR6 plugs, and the search came up with the plug listed as "Discontinued". Where can I go to source these plugs?

[Steve]

[GaryB]

Steve: as for information on this topic, I searched for "Bosch FR6DTC" and came up with a number
of vendors.

Another question is whether you recommend any for of lubricant or antiseize on the plug prior to
installation?

Thanks for all your help.

Gary

[Steve]