AC Delco Iridiums Gap????

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Apr 18, 2010 | 07:02 PM

jc98ss

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From: Murfreesboro, TN

AC Delco Iridiums Gap????

i just got my msd's and delco iridiums......they are supposed to be set at .40, but the sticker inside the engine bay says set gap to .60.....what do i do?

Apr 18, 2010 | 08:47 PM

sjsingle1

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From: Fort Worth TX

i use 60 myself

Apr 18, 2010 | 08:53 PM

crainholio

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Don't try adjusting the gap on Iridium plugs, the center electrode is super fragile and not designed to be tweaked.

Apr 18, 2010 | 09:04 PM

sjsingle1

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i have a jacobs ignition SP gapper..........not a cheap tool

Apr 19, 2010 | 01:35 AM

robsls1

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Crap back under the car I go then. Just put in Bosch platinums and set the gap to 40 not 60. Autozone said to set to 40 and the car I bought had the sticker missing. Oh well should be easy to come out atleat now.

Apr 19, 2010 | 01:50 AM

bene

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I gap my iridiums real gently to .04

Edit: I meant to put .04 not .4

Last edited by bene; Apr 19, 2010 at 02:24 AM.

Apr 19, 2010 | 02:02 AM

joecar

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From: So.Cal.

GM revised the gap from .060 to .040 a few years ago.

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Apr 20, 2010 | 12:38 PM

Wesmanw02

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Quote:

Originally Posted by robsls1

Get rid of the Bosch Platinums while you are in there!! Bosch plugs run like complete **** in these engines, they just aren't designed for them.

Get AC Delco Iridiums. You will be much better off, and the gap is pre-set.

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AC Delco Iridiums Gap????

AC Delco Iridiums Gap????

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