Another spark plug question...
Thread Starter
Heel & Toe
Joined: Jun 2017
Posts: 18
Likes: 0
Another spark plug question...
Good morning.
I have purchased NGK Iridium IX Plugs (TR55IX) for my '93 vette.
I've heard (and read) various information on these plugs. Are these good plugs to use in my '93? Or should I stick with ACDelco Platinums?
If I stick with he NGKs what do I need to set the gap at? Again, read various information on this.
If I decide on the ACDelcos what's that gap?
I already have the NGKs but a mechanic told me to stick with the Delcos so now a bit confused.
Thanks for the info.
I have purchased NGK Iridium IX Plugs (TR55IX) for my '93 vette.
I've heard (and read) various information on these plugs. Are these good plugs to use in my '93? Or should I stick with ACDelco Platinums?
If I stick with he NGKs what do I need to set the gap at? Again, read various information on this.
If I decide on the ACDelcos what's that gap?
I already have the NGKs but a mechanic told me to stick with the Delcos so now a bit confused.
Thanks for the info.
Team Owner
Joined: Jul 2004
Posts: 28,416
Likes: 3,271
From: Hartford WI
I think you should stick with stock gap unless you have done something radical and your builder advises different. I really don't like the long lasting plugs since it might be years before you pull them and dissimilar metals corrode and well...... I get the cheap stock ones or V Power TR55 if I want and change them annually. Prevents seizing up and lets me check if it is oil fouled.
Drifting
Joined: Mar 2015
Posts: 1,275
Likes: 165
From: Utah
I agree about the "checking plugs" to a point.
For my daily driver cars i use the AC delco double platinum, but those cars were also designed for them.
the plugs are also a bit of a pita to change in those cars... Doing it every 60k is a ok with me...
The vette is a different story, mostly because I'm still building it up, and still building the tune.
i change and inspect those plugs often...
Once it's all setup, i would like to run a longer life plug... Right now i have to pretty much unbolt the headers on the driver side to get at the #5 plug.
Atleast that keeps fresh antiseize on the threads...
For my daily driver cars i use the AC delco double platinum, but those cars were also designed for them.
the plugs are also a bit of a pita to change in those cars... Doing it every 60k is a ok with me...
The vette is a different story, mostly because I'm still building it up, and still building the tune.
i change and inspect those plugs often...
Once it's all setup, i would like to run a longer life plug... Right now i have to pretty much unbolt the headers on the driver side to get at the #5 plug.
Atleast that keeps fresh antiseize on the threads...
