Increasing compression using spark plugs.

I remember when I use to be into VWs that there were certain plugs that you could use to increase compression by a 10th. Basically you have a plug that sticks further into the cylinder therefore decreasing combustion chamber size. Has anyone heard of this on a teg? Just a thought.

u wont even notice a difference if it changes it by that little

good luck with clearance, raise compression the right way, build the bottom end.


I concur.