plug Indexing???

[Nunook]

i recently changed my plugs from platinums to iridiums, and noticed on the platinums that it looks like there is alittle hotspot. Figured in a month or so I might take the iridiums back out and regap them/make sure their burning good.

I wanted to kno if any of you guys indexed your plugs when you put them in? Did you notice any difference, or do you think you'll get any power increase?

[F3600]

seem no one responded.. well i never indexed my plug maybe sometime but it was for testing purpose to see if the car would run better .. Usually plug are already gapped for your engine .. did you see feel any difference when indexing yours?

[Nunook]

i havent done it, i wanted to kno if someone else did.

i guess ill try one day and see if it makes a difference. thanks for the response.

[pulsar gtr]

I personally don't index them as they come already gabbed.

PULSAR GTRRafi

[themadscientist]

gap and index are different things. Gap is the space between the center and side electrodes, index is the direction the side electrode is oriented at when installed. Mark the ceramic with a sharpie to indicate the position and use different plugs and/or thin washers to get them clocked the way you want.

[pulsar gtr]

Thanks for clearing it out TMS, I thought both meant the same, I don't have to worry about my index, I am using the bosch +4 plugs.

There is always some thing new to learn.

PULSAR GTRRafi

[Not_a_sr]

bosch +4 plugs = ACK.. my car hates bosch plugs period.

[themadscientist]

I use NGK or Autolite platinums

[float_6969]

Always had NGK's in mine and I've never had a problem.