Its the 4-cyl 3S-FE engine. I have about run out of ideas. I soaked the pulley and bolt in Seafoam for days. I did the " screwdriver jammed into the flywheel teeth" trick to lock the engine. Tried a 1/2 in air impact wrench at 100 PSI first, that did not work. Then tried a 1/2 in breaker bar with the impact socket, hitting the bar with a heavy mallet. NO joy. Put starter back in and tried to break bolt loose by cranking engine, that didn't work, either. The bolt is starting to get damaged, rounded a bit... but my 19mm impact socket still holds on it. I can't even get to first base replacing water pump, oil pump, timing belt, until I can get that damper pulley off. I am just going to end up ruining the bolt head, and then will have to drill with sucessively larger bits until the whole bolt head coms off, I guess. Then I would have the problem of easy-outing the bolt stud. I also tried some "freeze spray" (R-134) on the bolt, no help. I have an acetylene torch but that would likely ruin the pulley, because I think it is two parts held together in the middle by rubber. Its not reverse-threaded, so that it has to be turned clockwise, is it? I didn't try that. Any other "tricks" I can try before drilling the bolt head off?
- posted
17 years ago