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Discussion Starter #1
I am running a turbo kit on a built motor at 10 1/2 psi. I would like to change out the spark plugs but dont know what would be best. Ive heard copper is best for turbo to keep heat minimal. Also, what gapping should i use if the compression ratio is 9:1. Any suggestions??
 

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you should really get one step colder fr turbo or nitrous appilcations
 

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Most of us run the MotorCraft AZFS22C f4 plugs gapped around .030-.035 they do great but the need to be changed out a little bit sooner than plats.... but at $8 a set who cares[:)]
 

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Discussion Starter #4
thanks for the info. Are the motorcrafts copper. ive heard copper is better for turbo due to it stays cooler?
 

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Yes the AZFS22C are a copper plug.
 

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You should be able to get them from any Ford Parts Dealer.
 

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03OrangeSVT said:
Most of us run the MotorCraft AZFS22C f4 plugs gapped around .030-.035 they do great but the need to be changed out a little bit sooner than plats.... but at $8 a set who cares[:)]
John, I've found them here for half that price, just buy 5 or 10 boxes to help defray the shipping... https://www.1stfordparts.com/oe_parts_catalog.html
 
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