Discussion on cool head cooling.

[NOS_350X]

I have been running a cool head on my banshee for several years now, racing TT, Its o-ringed. Also on my 250r's O-ringed stock heads. O-ring desings are far superior, the heads are naturally designed to flow watter to the exhaust side then up. without the gasket, the gasket just assists in that.

[kaw rider]

Most cooling systems have problem with the waterpump. Most single pass radiators, heads and hoses will flow more water then the pump can push. There are new designs with smaller volume of water in the head are the dome area. You what the head to be under a postive pressue from the pump. You need a pressue drop across the head water circuit.