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Registered User
Join Date: Mar 2011
Posts: 865
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US spec 1981 911 sc- so many spark plug options
hey everyone,
I have a 1981 911 sc us spec car I need to change the plugs on. while shopping Pelican I noticed there are a ton of options for plugs... can anyone pint me n the right direction of which one I need? my car is set up mainly for Drivers Events and weekends. any help is appreciated http://www.pelicanparts.com/catalog/SuperCat/911M/POR_911M_ELIGNT_pg1.htm#item0 |
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08-19-2014, 08:15 PM
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Member 911 Anonymous
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Get either the Bosch or NGK Copper plugs. I prefer the NGK's and make sure it is properly gaped. Also check the rotor, if not within tolerance OHMs replace it. Checking the cap would not hurt either.
Jim
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'85 Carrera Targa Factory Marble Grey/Black * Turbo Tail * 930 Steering Wheel* Sport Seats * 17" Fuchs (r) * 3.4 * 964 Cams * 915 * LSD * Factory SS * Turbo Tie Rods * Bilsteins * Euro Pre-Muff * SW Chip on 4K DME * NGK * Sienes GSK * Targa Body Brace PCA/POC |
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08-20-2014, 12:44 AM
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Regis turd ab user
Join Date: Dec 2006
Location: Tacomatose, Wa USA
Posts: 1,489
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If your car has stock injection and compression NGK BP7ES should be great.
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08-20-2014, 02:34 AM
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Registered
Join Date: Mar 2006
Posts: 1,107
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My experience is that these cars work best with BOSCH normal plugs, the vacuum retard disconnected and plugged, the timing set to the high end of the factory spec. , and the FV set to 30-40 dwell. The 81 US SC was spec'd for 87 CLC octane fuel, and, if it is in good condition and does not overheat, you can usually run a bit more timing with higher octane fuel.
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Paul |
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08-20-2014, 06:35 AM
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Marble Grey
