well thanks for answering the rad its brand new. oil temp not sure done away with wiring when i put 16v in!!
thermostat put 4 in now got one in 75 degree. bleed it lots of times cant be that. fan working ok changed sensor in rad lots of times! been to tweeks today bought brand new racetech clock and sender to suit fan comes on at a 100

i screwed the sensor in the head must be wrong perhaps i should fit it in top hose???
i have done 6 rallies and no overheating its just annoying.
thanks for any suggestions