NGK TR55 plugs
Thread Starter
Safety Car
Joined: Sep 2003
Posts: 3,558
Likes: 2
From: Cape Coral FL
NGK TR55 plugs
I just recently put a set of NGK TR55 Iridium's in. When they came out of the box they were gapped to .050. I gapped them to .060 according to the service manual. Now I read somewhere that they should be gapped to .050. :smash: I guess that is the plug's spec. Anyone have any feedback for me? Should I take them out and regap them to .050. I haven't had any problems yet, but will this change the characteristics of the combustion process? :confused:
[Modified by ArKay99, 3:19 PM 11/19/2003]
[Modified by ArKay99, 3:19 PM 11/19/2003]
Racer
Joined: Sep 2001
Posts: 429
Likes: 0
From: Rocky Mount NC
Re: NGK TR55 plugs (ArKay99)
I gapped mine to 0.50 per recommendations on the forum. I believe the larger gap would be ideal in a nos setup, but I could be mistaken. I'm sure someone will clear it up fro you. As far as changing it out, I wouldn't think it would hurt either way.
