View Full Version : Wedge tr7 spark plugs

08-20-2004, 11:59 PM
I need some advice on the "correct" spark plugs for a 1980 TR7. The manual says champion n12y, Vicoria british says BOSCH super w8dc and my car came with NGK bp5es. The champions were just installed, and the car started better with the old NGK'S. Are these "HOTTER" plugs or something? I apreciate the help!

Mark Beiser
08-21-2004, 09:57 AM
Are you sure you have the gap set correctly on the new plugs? The heat rating of the plug has no effect on starting.

08-21-2004, 10:37 AM
My -7 has the Bosch plugs and runs and starts fine.

08-21-2004, 07:53 PM
Just went and looked 79 TR7 NGK BPR5ES. runs great.

08-21-2004, 11:43 PM
Thanks to everyone, I think I am going to try a new pair of NGK.

09-16-2004, 10:21 AM
The car runs fabulous with the NGK. I am not sure why, but who cares!