Thread: Cylinder head buggered???

You shouldnt lose any coolant. Almost every vehicle will crack its head if you cook it. The main reason we see is blocked radiators or generally poor condition of coolant system. Bigger exhaust always helps get rid of the heat particularly in turboed motors. If you do need to replace the head do yourself a favor and stick with a genuine Toyota head. See too many aftermarket soft heads or incorrectly machined heads that cause no end of trouble and the genuine heads are usually only a few hundred more dollars anyway.