I know this is an old thread, but I wanted to leave a quick note about my experience with these.
When I needed to remove my crank bolt at roughly 220k to replace a self-destructed vibration damper (and timing cover...), I welded up a piece of 4' pipe on an old crank pulley to use to lock the crank, then tried a 30" breaker bar with a 4' jack handle (about 5-6' of leverage) with no luck. Next I tried an I-R air wrench rated at 1,300 ft/lbs with no luck.
My final solution was to slowly heat the bolt with a torch until it was a uniform cherry red (giving time for the heat to soak down the bolt to the threaded portion), let the head cool slightly so as not to twist it off, and it came off easily.
Moral: If you think you're doing something wrong, you're probably not, as these things are TIGHT.
Also: Yes, it IS a normal right-hand thread. You start to wonder after the heavy artillery has no effect on it.
- Eric |