Check the cooling system condition, check the radiator, if its dirty or looks suss dont touch it!
I have just bought my second high performance car, both never made 7,000km in my hands before they were rubbish.
I have just discovered to today my R33 has a blown head gasket caused by corrosion and damage from an unserviced radiator, which i have just replaced also. When things like this are neglected and the damage is done its only a matter of time before something goes wrong and you wont be able to see it happening.
Looks like the beast if off the road for 4-6months for a top engine rebuild. Going to do Cams, computer, injectors, highgrade metal gasket. And looks like need a new roof after the bonnet incident. Stretched the metal beyond beating. Loving the new bonnet thoug. Tell me what you think. Just got it last night
The best tip I can give anyone is treasure your cooling system and buy bonnet pins!