[white944cup]

toolboy62: you are right about sizing the valve guides.....the factory service manual calls for a .06-.08mm press fit, which is approx. .0024-.0032" press, which is a lot of press on the guide. That is why they also recommend heating up the head and freezing the guides in liquid oxygen before installation. With this much press, the inner diameter of the guides will collapse on installation, which means they need to be reamed afterwards to correct size. The manual recommends using Special Tool 3015, which is probably a step-type reamer.