looking for spark plug recommendations
It's been years since I looked into new plugs for my sporty and I notice there are now a lot of choices. All I have ever run are harley 4r4s. Now there are platinum and fine wire electrodes with U grove or split collectors. What experiences have you had with the various types now available? Anything to stay away from?
I am running a 1000cc with a .03 overbore and thick head gaskets and an S&S super B. The bike runs pretty dirty and needs to warm up before it runs smoothly.