My L98 needs a hotter plug/suggestions
Advanced
Joined: Sep 2001
Posts: 87
Likes: 0
From: Baytown Texas
Re: My L98 needs a hotter plug/suggestions (AS84)
Are they wet, and if so, is there a gasoline smell....or is it just a dry carbon buildup? Reason I'm asking is because often times a breakdown in plug wires/cap & rotor/ or ignition module will mimic the need for a "hotter" plug...which really does nothing more than transmit heat to the cylinder head at a slower rate. In any case and to answer your question, increasing the numeric value of your plug increases the heat range, i.e. R43TS to a R44TS.
Thread Starter
Melting Slicks
Joined: Aug 2000
Posts: 2,009
Likes: 1
From: Springfield MO
Re: My L98 needs a hotter plug/suggestions (Red85)
A few on the passenger side have been wet, but other than that its just dry carbon build up. I've been thinking of upgrading my ingnition system but haven't checked it all out yet.
Advanced
Joined: Sep 2001
Posts: 87
Likes: 0
From: Baytown Texas
Re: My L98 needs a hotter plug/suggestions (AS84)
AS,
Adjusting the heat range up or down should be the last thing after you've verified the PCV, EGR, secondary ignition, and fuel pressure systems are o.k. I realize this sounds silly, but are those heads original to the car....or aftermarket? GM and lots of modifiers use heads that require 3/4" reach plugs and a stock 1/2" plug will foul quickly....but CHECK THE DEPTH before switching!
Adjusting the heat range up or down should be the last thing after you've verified the PCV, EGR, secondary ignition, and fuel pressure systems are o.k. I realize this sounds silly, but are those heads original to the car....or aftermarket? GM and lots of modifiers use heads that require 3/4" reach plugs and a stock 1/2" plug will foul quickly....but CHECK THE DEPTH before switching!
Thread Starter
Melting Slicks
Joined: Aug 2000
Posts: 2,009
Likes: 1
From: Springfield MO
Re: My L98 needs a hotter plug/suggestions (Red85)
It has stock heads. It has a new EGR valve and solenoid and the pvc seems to be ok but it isn't new. Ever since I did the mods it has a long crank on a cold start. i just figured it was due to the stock ignition.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski