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Registered
Join Date: Oct 2017
Location: houston, texas with Enzo SPCA # 8995
Posts: 449
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Spark plug gap on '74 Carrera
running (at least for now) NGK BP8ES. I could swear the owner's manual says .055" which seems very, very wide, considering the plug, out of the box, is about .030. What say ye'? thanx steve (stock motor, CIS, street car rarely driven in anger)
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Steve Meltzer '69 911E/bastard |
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02-06-2019, 05:23 AM
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Functionista
Join Date: Jul 2011
Location: CO
Posts: 7,717
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 The 0.55 number is millimeters....
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Jeff 74 911, #3 I do not disbelieve in anything. I start from the premise that everything is true until proved false. Everything is possible. |
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02-06-2019, 10:33 AM
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Registered Minimalist
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^Right which is 0.02165354 inches(so 21 thousandths on your little circle gauge thingy)
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Duane / IG: @duanewik / Youtube Channel: Wik's Garage Check out my 75 and 77 911S build threads |
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02-06-2019, 10:38 AM
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I feel like sucha an idiot (again!). I saw 0.55 and thought it was .055 (which would be a wide, but not off the wall, gap). My error, and thanx for helping me. NGK says .028" on their website. thanx again. steve
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Steve Meltzer '69 911E/bastard |
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02-06-2019, 10:59 AM
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Fleabit peanut monkey
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Quote:
One of the plugs was 22 thousandths which ties to manbridge's manual numbers. Others were larger up to 32.  https://www.go-parts.com/ps-mmp.php?make=Porsche&model=911&parttype=Spark%20Plug
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1981 911SC Targa |
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02-06-2019, 12:06 PM
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no wonder i'm confused. thanx. s
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Steve Meltzer '69 911E/bastard |
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02-06-2019, 12:08 PM
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1975 Porsche 911s
1981 Porsche 911 SC Targa
