I'm changing the timing belt and adjusters with a kit from Gates Rubber while replacing the head gasket. Instructions tell me to install the belt, line up the pulleys, install the tensioner spring, then torque down the pulley. (Interestingly, nor torque value is given for the pulley without the tensioner). Then rotate the crank a certain amount and check belt deflection. Spec calls for .375 to .45 deflection at the top between the two cams. I've got .39, which just LOOKS and FEELS way too loose to me. I'm using a brand new spring that came with the belt, pulleys, and adjuster.
If these engines are interference, and the cam belt is installed too loose, I'm going to trash the whole thing in a heartbeat! I don't want that to happen. My question pertains to how the adjuster functions. Once that bolt is torqued properly, does the spring continue to hold the correct tension on the belt as it stretches, or is it like the cam chain on an old Honda motorcycle, needing to be loosened and retorqued periodically to maintain proper tension?
What do you guys think? I just want to make sure I have this right so it doesn't grenade on me!