| sky-dancer is correct with saying the longer plug thread into the chamber has gained a slight bit more power. STOCK CYLINDER HEAD ONLY. dont try this with the 2 piece head kits or you will ruin your piston ect. with the angled sparkplug hole so to speak , the plug doesnt go directly straight down towards the piston crown instead it directs on the angle and does avoid piston contact, so when you think of this being some extra packing / filling that will reduce some internal volume in the combustion chamber, yes i will do so. as we say compression = power and compression comes from the cylinder head combustion chamber when the piston is at top dead center. just looking at the amount of guys that have viewed this thread that for some reason i started [ which i must say has been very valuable ] there have been over 20,000 views, beat that guys. ha ha. | 
