Today I checked all my TR6 plugs for tightness they have been in about 1500 miles or so. All good and snug I pulled one from the drivers side. My camera is down but it looked like this.

The last thread is black (from richness?)
The electrode looks almost the same as new.
The ceramic is getting a nice tanish brown tint to it.
And the little gap arm thingy is whiteish on the back and normal on the underside.

Does this sound ok?

Thanks.

 

Sounds good, but you really want to check them after a good hard pass down the track. If they still look the same, your OK.

 

Why such cold plugs with no pulley or chip?

 

Souinds good from your description.

LTG: TR6s are only one range 'colder' than the OEMs. He is being 'safe'.

Dan

 

I see...

 

well sal said it was the only plug he would run in a stock motor and ngk also points to the tr6 as a oem replacement.

Thanks for the replies. Plus at stock I am pushing peak 11# on the autometer guage.