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Which spark plug for '68 911?
The car is new to me and from what I can tell it is a stock engine setup (2.0 130hp US version).
The car has crappy/cheap plugs in it currently. What plugs would be recommended? I see that the W3DPO is the recommended plug per Porsche but wanted to see if there are other's I should consider. The car is just for street driving. Thanks, Dan
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--Dan 1968 911 Coupe 1970 911T Targa 1995 993 Coupe 1997 993 Targa (sold) |
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02-16-2009, 07:49 AM
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RETIRED
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Go with what is recommended if they still make the plug. Don't go with anything fancy like split fires or quad tips and certainly not Platinum.
If the plug is discontinued, there will be a superceeded recommendation.
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1983/3.6, backdate to long hood 2012 ML350 3.0 Turbo Diesel |
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02-16-2009, 08:25 AM
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There in lies the rub. The recommended plug is a platinum complete with the platinum price. I'm happy to pay 7x more for a plug but I'm not sure this is really the right plug to go with.
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--Dan 1968 911 Coupe 1970 911T Targa 1995 993 Coupe 1997 993 Targa (sold) |
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02-16-2009, 08:42 AM
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Max Sluiter
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Most people recommend NGK copper electrode plugs for early cars. If the factory specs the Platinum Bosch, I am sure they will be fine. The copper are cheaper.
You can decide. I would go copper in Bosch or NGK.
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1971 911S, 2.7RS spec MFI engine, suspension mods, lightened Suspension by Rebel Racing, Serviced by TLG Auto, Brakes by PMB Performance |
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02-16-2009, 12:53 PM
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N-Gruppe doesn't exist
Join Date: Jun 2005
Location: *%@#ing GPS, where am I? Oh wait I see the Space Needle.
Posts: 4,394
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here is a bosch to ngk chart
http://www.spark-plugs.co.uk/pages/technical/boschd6b-w4e2.htm
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Ted '70 911T 3.0L "SKIPPY" R-Gruppe #477 '73 914 2.0L SOLD bye bye "lil SMOKEY"  "Silence is Golden, but duct tape is SILVER.” other flat fours:'77 VWBus 2.0L & 2002 ImprezaTS 2.5L |
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02-16-2009, 03:27 PM
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Join Date: Nov 2006
Location: Denmark
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i had a US 2.0 '67 911, i ran w5dcs in it,
i went for "nothing special" w5dcs, as that original early car tended to soot it's plugs quite frequently i run w5dcs in my 69 also.
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Paul '76 911S - cockney brown '69 911T coupe - tangerine '73 911T targa - light ivory '67 911 coupe - polo red Last edited by red67; 02-16-2009 at 03:52 PM.. |
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02-16-2009, 03:48 PM
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+1 on the 5s. Even my wrench recommended staying with a hotter plug...unless you constantly track the car...
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Roger 1968 sand beige 911 Normale coupe #11830091 1984 metallic moss green with champagne interior 911 Carrera coupe 2012 silver with red interior Boxster |
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02-16-2009, 04:02 PM
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So do you mean the WR5DC? I can't find a W5DC on Pelican for sale.
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--Dan 1968 911 Coupe 1970 911T Targa 1995 993 Coupe 1997 993 Targa (sold) |
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02-16-2009, 05:42 PM
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Location: southern RI USA
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WR5DC+ is what they recommended for a my 2.2. I believe its just a superceding part # re: W5DC?
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Sepia brown 1971 911T. |
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02-16-2009, 05:47 PM
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RETIRED
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I think the "R" stands for resistor type plugs,,,,,
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1983/3.6, backdate to long hood 2012 ML350 3.0 Turbo Diesel |
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02-16-2009, 06:30 PM
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Location: Denmark
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yes wr5dc's are the same heat range. get a set of those babies.
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Paul '76 911S - cockney brown '69 911T coupe - tangerine '73 911T targa - light ivory '67 911 coupe - polo red |
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02-17-2009, 02:09 AM
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1970 Porsche 911T 2.2E
1968
1970 and 1997 Porsche 911 and 993 
Da cab
1971 Porsche 911S
1968 Porsche 911 Normal
1984 Porsche 911 Carrera
