Will a hotter plug make a difference?
Thread Starter
Member
Joined: Jul 2011
Posts: 465
Likes: 0
From: Michigan
Car: 1991 Camaro RS/1989 Formula
Engine: 5.0 L03 V8
Transmission: 700r4
Axle/Gears: 3.73
Will a hotter plug make a difference?
I've heard that it can but never tried it for myself, anybody know?
Moderator
Joined: Jul 1999
Posts: 17,263
Likes: 168
From: 51°N 114°W, 3500'
Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
Re: Will a hotter plug make a difference?
Plug temperature is the temp on the tip of the plug. What temperature the plug is depends on a lot of factors but the goal is to have the tip temp operating in the same range. Adding compression or boost requires a colder plug because of the hotter temperatures created in the combustion chamber. In the end, the tip temp will still be in the proper operating range even though it's a colder plug.
You want to run as cold a plug as possible. Too cold and the plug fouls up. Too hot and the tip burns off. Running a hotter plug in a basically stock engine won't change anything unless you're burning oil and the plugs are fouling up. The hotter plug will help burn off those extra deposits. It's a bandaid fix.
You want to run as cold a plug as possible. Too cold and the plug fouls up. Too hot and the tip burns off. Running a hotter plug in a basically stock engine won't change anything unless you're burning oil and the plugs are fouling up. The hotter plug will help burn off those extra deposits. It's a bandaid fix.
Thread
Thread Starter
Forum
Replies
Last Post
