Designed to replace your factory spark plugs Manufactured to stringent quality standards. If you are using a hotter higher voltage coil you aren't getting it's full benefit unless you open the plugs up. Peter, on a similar spec engine I run 7's for hillclimbs, 8's for racing. Denso's patented U-Groove spark plug enables complete combustion by allowing the spark to fill the gap created by Last edit at
It took me 30 seconds to find it in the archives. Would the head get too hot? But not because of anything in performance, just because the body is made of stainless steel so they look pretty even when a lot of miles are on them, that's all. Regards, Robert Kirk kirkbrit yahoo.
So i got valves,springs ,guides,and hardened seats. The plug grade needs to be correct to suit your combustion requirements. A higher output ignition system will allow a larger spark gap, which may help burn, or may not do anything if the original spark was completely burning the fuel mixture already. Pagination for search results. The plugs will not alter the overall running temp. There will be many display problems if you continue, because IE6 has hundreds of known bugs.