50enzo

do colder spark plugs actualy help? or does it depend on your set up? or are they supposed to run hot for a better burn?

iceman89gt

mostly depends on fuel type, higher octane actually burns colder and cleaner because its more pure than pump gas per say. the lower the octane the more heat it takes to burn and the slower it burns due to additives and its grade of refinary. the slower the burn the more heat produced and the slower the burn the more fouling due to the whole amount of fuel on intake into cylinder not being burned completely. you could put three motors heads in front of me thats been run for a good while then taken out and run with diffrent octane fuels like 1-89 octane, 2-98 octane, and 3- 108 octane and i could tell u which was which by the amount of fouling in the cylinders

50enzo

thanks, but wat should i run? ive got gears that i havent added to my list of upgrades.3.73
is their a part number if u do recomend a set of plugs?
i usualy run chevron 87. or 76 gas 87 grade

92cobra

i never run anything less then 89 10% ethanol.

iceman89gt

stay with stock plugs , im running stock in mine but get autolite plugs. gap em at .052 when you change em see what color they are and check current gap. if they are brown or tan=good burn gray= a little rich light brown and crusted=lean burn black= really rich black and wet= fouled and either overly rich or if its oil you got oil getting into the cylinder.

EliteTuners

+1 on the iceman!

50enzo

why auto lites and not those platinum plugs with all those commercials for them? are they for imports?

iceman89gt

no, they just looking for your money with those commercials,how well the plugs perform is up to your care for the motor mainly. i race at the track every weekend for about 3 years and my dad has racedabout 30 years now and thats allwe ever used.

porsc911t

would that be the same gap for an '85 gt?

i only ask because i just got this mustang and whoever painted it sprayed over the vacuum diagram and stuff, thanks

my77stang

good call, the two best places you can get gas.... for cerial - but stop using the cheap stuff you cheap bastard [8D]