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Registered
Join Date: Oct 2003
Location: Palm Beach Gardens, FL
Posts: 280
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Spark Plug Differences and Recommnedations
I note that Wayne says in his book that Bosch WR5DP are what the 1974-83 stock engines takes.
What is the difference between the WR5DP and the WR6DP plugs, and when would one use the 5 and when use the 6? Any recommendations?
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1983 911SC Chocolate Kiss (Smokey Quartz Metallic) 1991 VFR750F 1982 VF750S Miata (wife's) Audi A6 Quattro (family) |
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06-14-2004, 09:03 AM
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Registered
Join Date: Nov 2001
Location: Central Kentucky
Posts: 729
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For Bosch plugs the higher the number the "hotter" the plug (For NGK it is opposite the lower the number the hotter the plug). That said, in general use a hotter plug if you are getting some plug fouling, especially important on a carb'ed car but I see you have a CIS 83 SC. My geuss is that you would not be able to tell much difference between a 5 and a 6...but heck just try both and see how they work. Run them for a half hour or so, cool down , pull a plug and check the color.
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Richard Lane 1978 911SC 1973 "Clean" RS clone |
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06-14-2004, 09:36 AM
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