I have been struggling for the last month or so with a broken crank bolt. I removed the bolt but the threads were trashed so I went with the time cert option and that is not working out for me. I wasn't able to drill the hole true enough and the time cert is pulling out.

These are my options as i see it.
1. Drill out the crank larger and tap for 3/4 inch bolt (hole is already drilled slightly larger than 37/64's)also drill out the HB to accommodate the 3/4 inch bolt.

2. remove engine, remove crankshaft and bring to machine shop see if they can repair the snout.

3. replace crankshaft with new/remanufactured crank.

with Option 2 and 3 I would go ahead and replace the rod and main bearing. Anything else I should do while i'm in there? Will i need to get the re-man crank indexed? I've never been into an engine before and don't want to miss any important steps. Any tips or ideas y'all might have would be much appreciated.

This is bad news. I can only hope mine goes in better. I think you're left with options 2 or 3. I wouldn't go for #1.

John B.

Just make sure your bit stays sharp. That's where I went wrong. The bit chipped and dulled at the ends of the cutting edge and I did not stop to sharpen it. Dumb mistake and now I'm going to pay for it. Good luck.

Anyone used a top line reman crank before? That's what I'm looking at for about $500 including shipping. Brand new cranks go for around $1000. <img src="/forums/images/graemlins/scared.gif" alt="" />

Yeah, I quit half way through drilling into my old threads because I noticed the bit had chipped. I'm not sure if it can be sharpened or if I should contact Time Sert for another one. Not even Grainger has the right size in a short square-end shank configuration. That's what I need due to the tight quarters and the limited tools I own to drive it.

John B.