being in break-in it could be 190, but I have heard of the flashpoint (duratrax) being 70 dgrees off. at 190 you should be abke to touch the top of the head, if you can then your engine running too cool, also try the water test, put a drop of water donw by the plug and it should boil away in about 2-3sec if the engine is around 230-240 where it needs to be for break-in.