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Somatic Negative Optimist
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Plugs for a ss 3.2?
CR is 9.8 : 1 on this SS 3.2 with 964 cams and CIS.
Engine runs well with the W5DC but I am wondering if other plugs might be recommended. After about 2000 miles, the plugs look good but slightly dark-soothy indicating rich mixture? What about a W7DC? Why are W5DC recommended for 1980 SC's but after that Porsche called for W7DC? Hotter or colder plug? CR was the same after 1980: 9.3 : 1. So. why different plugs?
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1980 Carrerarized SC with SS 3.2, LSD & Extras. SOLD! 1995 seafoam-green 993 C2, LSD, Sport seats.  Abstract Darwin Ipso Facto: "Life is evolutionary random and has no meaning as evidenced by 7 Billion paranoid talking monkeys with super-inflated egos and matching vanity worshipping illusionary Gods and Saviors ". 
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06-10-2007, 08:29 AM
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Designer King
Join Date: Mar 2004
Location: Toronto, ON Canada
Posts: 5,499
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FWIW I use the 7s on my ls 3.2. 10:1 CR.
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Paul Yellow 77 Sunroof Coupe/cork interior; 3.2L SS '80 engine/10.3:1/No O2; Carrera Tensioners; 11 Blade Fan; Turbo tie rods; Bilstein B6; 28 tube Cooler; SSI, Dansk; MSD/Blaster; 16x7" Fuchs/205/50 Firestone Firehawk Indy 500s; PCA/UCR, MID9 Never leave well enough alone |
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06-10-2007, 06:46 PM
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Somatic Negative Optimist
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Paul:
10:1 with single plug? What octane? Timing 5 deg BTDC?
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1980 Carrerarized SC with SS 3.2, LSD & Extras. SOLD! 1995 seafoam-green 993 C2, LSD, Sport seats. Abstract Darwin Ipso Facto: "Life is evolutionary random and has no meaning as evidenced by 7 Billion paranoid talking monkeys with super-inflated egos and matching vanity worshipping illusionary Gods and Saviors ".
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06-11-2007, 06:00 AM
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ME 262 (SOLD)
Colibri
Gas Mizer
Mileage King
Dog Bus
