I recently (1500 miles ago) changed my water pump as a part of preventative maintenance. I put on a pump with a cast iron impeller, used gasket sealent(on both sides) and reused all 8 bolts. Then I found out that 3 of the 8 bolts (the bolts that hold the pump to the head) are not supposed to be reused because the are "torque-to-yield" bolts. Do I have a problem here? Also, I didn't use a torque wrench when installing the new pump, just installed them to what I thought was reasonable. No leaks (yet).
