Denso Irridium plug gap ?
Thread Starter
Instructor
Joined: Dec 2003
Posts: 229
Likes: 0
From: Aurora Colorado
Denso Irridium plug gap ?
What is the best gap for the Denso's. I was getting some misfires on brand new plugs during dyno tuning. I set them to the " factory
suggested" .060. My tuner suggested .055 and Iv'e heard of some people going as tight as .045. I also heard those plugs are supposed to be pre-gapped and I opened them up considerably, I think they were
closer to .045 - .049 out of the box.
Any help would be appreciated
suggested" .060. My tuner suggested .055 and Iv'e heard of some people going as tight as .045. I also heard those plugs are supposed to be pre-gapped and I opened them up considerably, I think they were
closer to .045 - .049 out of the box.
Any help would be appreciated
Drifting
Joined: Oct 1999
Posts: 1,712
Likes: 7
From: Sunnyvale CA
Originally Posted by James G
What is the best gap for the Denso's. I was getting some misfires on brand new plugs during dyno tuning. I set them to the " factory
suggested" .060. My tuner suggested .055 and Iv'e heard of some people going as tight as .045. I also heard those plugs are supposed to be pre-gapped and I opened them up considerably, I think they were
closer to .045 - .049 out of the box.
Any help would be appreciated
suggested" .060. My tuner suggested .055 and Iv'e heard of some people going as tight as .045. I also heard those plugs are supposed to be pre-gapped and I opened them up considerably, I think they were
closer to .045 - .049 out of the box.
Any help would be appreciated
Racer
Joined: Jun 2004
Posts: 424
Likes: 59
From: Warner Robins GA
Originally Posted by James G
What is the best gap for the Denso's. I was getting some misfires on brand new plugs during dyno tuning. I set them to the " factory
suggested" .060. My tuner suggested .055 and Iv'e heard of some people going as tight as .045. I also heard those plugs are supposed to be pre-gapped and I opened them up considerably, I think they were
closer to .045 - .049 out of the box.
Any help would be appreciated
suggested" .060. My tuner suggested .055 and Iv'e heard of some people going as tight as .045. I also heard those plugs are supposed to be pre-gapped and I opened them up considerably, I think they were
closer to .045 - .049 out of the box.
Any help would be appreciated
The Denso Iridiums come pre-gapped, you don't have to adjust anything and shouldn't since you run a huge risk of damaging the Iridium plating.
I have them in my Z06, nice plugs, but not cheap.
