Originally Posted by billhendren
Send the pistons to Swain Technology and have them ceramic coated on top,this really helps pistons that are thin in the valve pocket area.we do this with all our N20 and turbo engines.Bill
I'd have to agree here with Bill the problem is:
Valve size, 2.200
Piston relief,is cut deeper to accept the 18 degree valve,which inturn means a lesser distance to the 1st ring land.
Nitrous means more heat on the top of the piston,coating I believe will help.Also oil sprayers from the connecting rods will help cool the bottom of the piston.
Do your home work on a better ring stack on the piston.
All piston qualitys are not all alike,different type grades of aluminum alloys.
And I am prolly forgetting more but thats off the top of my head,maybe this will bring more to the discussion.
Gas port the piston to get a better ring seal.
Use a good hell fire ring with plenty of ring gap= atleast .007 to the inch