i have a b18b that i recently replaced the head gasket. now i am experiencing some overheating problems. i cheked the relays and fuses and all are fine and in working order. the fan also turns on aswell. the thermostat seems to be working( the top radiator hose is hot). when i drive it normaly it does not over heat until i run it hard and then i starts to over heat. i can get the temp to go down if i keep it around 3k. dont know that to check now.

thanks