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spark plug gap?

2662 Views 13 Replies 9 Participants Last post by  COSVT03
I just got some denso iridium spark plugs, and im just wonering what i should gap them to.
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I think for a stock SVT, you are fine with 50-55 wherever in there. OPening them up is a myth about making more power, they really dont or if it does you wont feel it. I have mine gapped at 40 but my Motor is far from stock. But as i said if its just bolt ons ur fine with 50. Nitrous or FI go to 30-35.
 

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.060 without nitrous or FI .030-.035 with nitrous or FI.

also its not a myth... the wider the gap the more voltage it takes to fire the plug. The more voltage used the more complete the ignition/burn..... it will definitly help smooth out the idle.
 

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i thought the iridiums come pre gapped and if you try to gap them you risk breaking the small electrode or whatever??? [dunno]
 

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Ok, Well THATS true. 03Orange you dont gain really any power tho do u?I mean i KNOW for a fact with FI you can, but NA basically stock you wont. We would somewhat, but its minimal for stock vehicles right?HEHE i had my gaps right tho!!
 

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It does make some difference even with a NA motor... you can even hear the difference in the exhaust note.

I know it sounds strange.......
 

· Turbo!!!!
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If your that woorried about the gap go to your local parts store they'll gap them for free.
P.S.ask the old guy behind the counter every parts store has one and they always show you how to do it so you can do it your self the next time
 

· on thin air
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Either way is good, just know that the coppers need to be replaced more frequently than the plats.

Right now I am running the coppers and I have zero complaints. You will most likely have to order them though.
 
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