Spark Plugs

[Grim[Z34]]

Where is the best place to get the best set of spark plug's...Car been running rough last day or to days and its running under 1000 rmp. at idle, so I look under the hood to find one of my spark plug rod's is hanging out of the engine...and it was busted in half....I don't know how this happend, I know I didnt break it...

[geoffinbc]

Goto your dealership and buy AC Delco plugs.

[Grim[Z34]]

Sound's Good might be on the high side tho...I use Ac's in my quad..well anyway thx.

[imported_germ]

NGK spark plugs are nice as well

[Ja[M]z]

NGK ? They specialize themself in Japenese engine no ?

Ac delco all the way or take Rapid fires or platinum ones , if you want to invest some more .


But everyone told to never try those Bosch Platinum sparkplug . I was having some bad misfiring under heavy accelration with AC delco Spark plugs ( standard one tho )one my Sunbird 3.1 and it disapeared with Bosch ...

[White93z34]

from what i understand bosch are junk for our engines.

and NGK as far as i know spechalise in import engines.

i have always ran AC Declo spark plugs in my 3.4s, in fact i have a brand new box of 6 here waiting to go into my euro.

you can get em at about any parts store.

[Juglenaut]

It is like asking what is the best Burger joint to goto to get hot food.

[X11_STE]

A/C Delco's are the way to go if your car is stock. NGK's, while are made for import engines, are very acceptable as they are made to tighter, higher performance tolerances. Bosch, STAY AWAY FROM!!! , especially the bosch supers, they are made in mass without the required quality controls and can vary greatly from batch to batch. The Bosch Platium's are ok but for the money there are better options. Finally, if you have bottomless silver lined pockets, you can consider the Denso Iridium's. Absolutely the BEST plug on the market. The downside is they can be rather hard to find AND the cost for my X-11 is $12.99 PER PLUG!!!!!! Thats not a typo, 12.99 per plug, ouchy ouchy.
BTW, I dont work for any sparkplug company. I used to work for AutoZone and my statements are based soley on personal expeirence, and expeirence from customers.

[Grim[Z34]]

what about AC-DELCO_RAPIDFIRE them the one's to get

[X11_STE]

Not sure about those (our store didnt stock them). Sounds like they are either Delco's version of platinum plugs (if so, go for it) or Delco's version of the Splitfire plug, in which case I would have to say why waste the money? With all plugs you get 1 spark per combustion cycle so having more than one tip is useless. Sure you get like.0000001 ohm less resistance per spark (since the spark has a choice and will take the path of least resistance) but really, will that small of an amount make any difference? Absolutely not.

[geoffinbc]

I am pretty sure I saw that GM is now using Iridium plugs on some new motors. Plugs last like 200,000kms

[imported_germ]

actually, IIRC, AC Delco plugs have been discontinued and is being replacing them with NGK plugs. by the way, i saw this with my own eyes. a buddy bought AC Delco plugs, i pulled them out to gap them and they were NGK's.

yes NGK's are used in the import cars, but they are becoming more and more popular in the US.

the part #'s you need for NGK are TR-55 for a stock heat range, or a TR-60 for 1 heat range colder.

i would not recomend Iridium plugs yet, you cant really gap them or you risk the chance of breaking off that VERY small electrode.

[Ja[M]z]

What about AC delco Rapid fires ? They will be my next bought , its been a while since i want to try them

[goatman]

I used a set of NGKs in my 2.8 Beretta, and it did not like them at all. So I swithched to the Delco Rapid Fires, and they worked awesome.

[Grim[Z34]]

I put Ac's in my car today..Same as what was in it... And its running a little better not missing now..Still need to salve ses light and need to get abs sensors so my abs light goes off