Tick tick clunk!

[isaac]

Well good luck getting it all back together with the new part but I can pretty much guarantee that it will be something you did during the teardown and rebuild that's causing this, assuming it wasn't the catastrophic damage itself that did something you can't see. The simplest explanation is usually right in these situations, and this is coming from a guy who's blown engines like a hobby for the last decade.

You really need to make a concerted effort to retrace your steps.

BTW If you're getting crank and spark then clearly none of the safety switches are an issue.

If the spark is orange instead of blue, you've got a weak ignition part (unless the battery's weak), but it's not like you had an ignition part magically fail at the exact same time you had catastrophic internal engine damage. That kind of coincidence just doesn't happen unless the crankshaft wobbled so badly that it broke the ignition pickup in some way when piston met valves.