How about a forum for Spark Plugs ?

Status
Not open for further replies.
I've got the Bosch Platinum +4s in my '95 Civic- it likes them.

SplitFires, on the other hand, seem rather combustion-chamber-sensitive IMO. My 454 hated 'em but the old Slant Sixes I drove absolutely loved them.

Also, isn't the correct term "sparking plug(s)" hehehehehe...
 
At my BOSCH Center, Platinum +4s are a joke. Bosch Supers are the plug of choice. There is a Silber BOSCH for some apps, and I liked mine. Currently using NGK v-Power and they seem good. Best I used were Beru Ultra-X. I cleaned and re-used them in my V6 Audi most of the 90k I owned that car.
 
Iridiums -

If you arn't using a step colder plug then you arn't taking the full potential or benefits that the iridium has to offer. Period! (sorry couldn't resist
laugh.gif
)
 
in progress ? its started long ago! But I don't mind on this one - afterall where will all these poor chaps post their questions about sparkplugs since we dont have forum!
ooo.gif


As for colder plugs - best I can say without opening a can of worms is that check your plugs and if they are far from looking fouled then you should be ok going one step colder.
Or else just try it! Like we try different oils!!
Does depend also on the motor and life. As the carbon increases the compression ratio it will benefit from a colder plug.

Right now I have a step colder regular plugs in the accord for the last ~200 miles and its loving it! If this works for the regular plugs then the iridiums would work for sure!
 
then it will love a colder plug. exactly the case with my accord.
do you drive it hard/high rpm ? does it have an air intake(leaner mixture) ? then more the reason...

but dont take my word blindly, use a colder plug for a while and see how it likes it and how they look after maybe 2-3k miles ?

Be careful - besides using different numbers for heatrange, some manufacturers have heat range numbering reversed!! 6 is colder than 5 for NGK but hotter for some other brand !
 
Quote:

Slant six as in Chrysler Hemi?

Click to expand...


Yep, the ol' MoPar 30-degree economy six or "slant-six" engine. Virtually indestructible. My '95 Civic is the only thing else I've driven that could compare with the /6's reliability. Drove a few of them for a total of over 25 years The rest of the vehicle gave out but the engines kept on going.

Back to sparking plugs,...

Funny thing, though- I read somewhere that "open-flame kernel" plugs such as SplitFires were supposed to do better with open-chamber heads such as Hemis, BB Chevys, 318 polyspheres, etc. (the latter engine IMO was vastly superior to the 318 wedge-head that replaced it). My personal experience was totally opposite.
 
Quote:

then it will love a colder plug. exactly the case with my accord.
do you drive it hard/high rpm ? does it have an air intake(leaner mixture) ? then more the reason...

but dont take my word blindly, use a colder plug for a while and see how it likes it and how they look after maybe 2-3k miles ?

Be careful - besides using different numbers for heatrange, some manufacturers have heat range numbering reversed!! 6 is colder than 5 for NGK but hotter for some other brand !

Click to expand...


maybe i'll try them in my Galant, they were white....too bad the F150 is so hard to change, it can keep the MC the dealer put in 1k ago....
the galant is so easy to change...i have a K&N drop in and a very free flowing exhaust (aka, rusted to #@$%!)
 
Old fashioned steel is great - a good conductor.
They won't last as long as platinum or iridium, and thus are not used by mfrs. for mandated 50-100k emissions.
Platinum is not as good as a conductor as steel or iridium, but works well with fine wire types of plugs.
So, if you get a nice fine wire iridium that has the correct reach and heat range, you are golden.
Now you have no need for a forum.
 
Conductor quality is just a marketing tool IMO. If you look at the whole circuit wire is resistive , plug cap is resistive 5k, plug is resistive another 5k, air gap is HUGE infinity. Combined the resistive difference between copper or steel or platinum or rareum (more common than unobtaineum) is pretty much a moot point. What does make a difference is how resistant the material is to "burning back" or eroding the gap open too fast. That's why exotic metals and multiple ground straps are used, not for more spark power (even if the spark pictured on the product looks like Frankenstein's laboratory, LOL)
 
With a better conductor, you can make the gap wider [potential increase in burning efficiency], and used finer tips, for better gas flow.
But plain steel is great if you keep them sharp and gapped.
 
I was alwasy taught, with those like me, who have plymouth neons, platinum plugs are your enemy...our cars have have a waste spark set up, meaning, copper is preferred... pics of platinums used on neons, showed excessive plug wear, ashy white deposits, and poor perfromace in less than 10,000 miles. Bosch is supposed to be the worst according to them. I alwas had best luck, with NGK, NGK v powers (supposed to make a more complete burn, regarding 'quenching' of flame spark), and ac delcos wernt bad either! I have always wanted to try autolites, but at walmart, their sold as pieces yuo have to screw the top on, and they look not as well constructed... plus its a division of honeywell/fram.... their spark plug wires (2 sets) didnt work wel on my car.
 
I bought a 94 GC 3.3 couple of years ago. 180K miles. Ran well, but leaked oil everywhere and burned it as well. Finally got everything fixed and replaced the plugs with Autolite single plats, (W/M, about $2 each). It came with BOSCH single plats. 4 of the 6 plugs had broken insulators.
I've seen the same thing with these plugs in other mopar products.

My 2000 GC 3.3 came with Champ double plats. At 70K miles, they were used up. I put in Autolite double plats in 05, (on sale at NAPA), They looked like new last fall when I checked them. The 3.3 is a wastefire engine and supposedly requires the double plats. I have read of some using plain Champ RJ12Ys in the 3.3 with good results. My 2.2/2.5 4 cyl. mopars really do not like any plats. Plain champs or autolites work best and will out last the plats. The turbo versions are especially sensitive to the plats.

twocents.gif
coffee.gif
 
Status
Not open for further replies.

Similar threads

G
  • Locked
What's the "BEST" spark plug?? (*not* platinum)
2 3
Replies
54
Views
39K
mechtech2
G
  • Locked
spark plug wire problem
2
Replies
24
Views
6K
greenjp
C
  • Locked
When to Replace Spark Plug Wires?
2
Replies
23
Views
6K
philipp10
zyxelenator
ACDELCO iridium spark plugs after 100k in Chevy Volt
2
Replies
26
Views
10K
tyman
FordFETruck
Anybody else experiencing sparkplugs won't stay clean in lawnmowers running E10 pump gas?
3 4 5
Replies
83
Views
4K
nbpt100
Back
Top Bottom