(6) HotRodg57 (9)cdandelivery
(8)tahoe52deluxe (3)60Impala18374dr 57
||speedygman (7)Mike JW (4)kwhizz
Jerry Acheson (13)
Loc: Plano, TX
02-20-12 09:03 AM - Post#2192906
In response to technitom
Precious metal electrodes (iridium and platinum) last longer, so will maintain the proper gap for a much longer time. They have allowed new car mfrs to extend plug change recommendations to 100K miles. If platinum-tipped plugs cured a fouling problem, it's probably because they were a slightly hotter heat range.
I'm not sure what, if anything, copper core and Rapid Fire plugs do that other plugs can't. I guess a copper core could reduce resistance, allowing more spark current, but who knows if the performance increase is even measurable?
1982 C-10 SWB pickup -- Unmolested base truck, original paint, originally with 250 six and 3-on-the-tree
Now has 355 with Vortec heads & RamJet roller cam, TH350
Retired, but working part-time on 50s-70s cars and trucks.
Edited by MikeB on 02-20-12 09:05 AM. Reason for edit: No reason given.
NOTE: You are viewing an individual Post. View the Entire Topic
FusionBB™ Version 2.1
©2003-2006 InteractivePHP, Inc.
Execution time: 0.172 seconds.
Total Queries: 10
Zlib Compression is on.
All times are (GMT -0800) Pacific. Current time is 04:51 AM