spark plug gap question

[Grambo]

couldn't find the answer in any of the archives but curious if the NGK plugs come pre-gapped for the 955i, or if I need to gap them, and secondly, what is the recommended gap for the iridium plugs?

.8 mm = .031"

.9 mm = .035"

thanks guys, sorry for the dumb questions
Chris

[Mustang]

no spark plugs come pre gapped for anything .......................

but they generally are in the .035 range will work in any combustible gas engine .

you should always check when installing new plugs .

anything .030-.040 will work just fine in a tigger motor .
I tend to stay more towards .030 cuz the sparkler maker is pretty lame

[Grambo]

no spark plugs come pre gapped for anything .......................

but they generally are in the .035 range will work in any combustible gas engine .

you should always check when installing new plugs .

anything .030-.040 will work just fine in a tigger motor .
I tend to stay more towards .030 cuz the sparkler maker is pretty lame

Ok, so the .030 works a bit better than the wider gap. Gotcha

[Grambo]

Ill try that! thanks Mustang 
Cheers
Chris

[Bixxer Bob]

Never used an ordinary plug for years and have never gapped an iridium plug, I'm sure I read somewhere they were already gapped, but then again ....

Edit:  not as straightforward as you might think:

http://densoiridium.com/installationguide.php

[Grambo]

Never used an ordinary plug for years and have never gapped an iridium plug, I'm sure I read somewhere they were already gapped, but then again ....

Edit:  not as straightforward as you might think:

http://densoiridium.com/installationguide.php

[Chris Canning]

Never used an ordinary plug for years and have never gapped an iridium plug, I'm sure I read somewhere they were already gapped, but then again ....

Edit:  not as straightforward as you might think:

http://densoiridium.com/installationguide.php

Yup haven't gapped a plug in what must be 25 years at least.