Not much to say. In fact I'm not sure there's much learning here. Just though I'd post/archive this in case someone else has the same issue.

Last night i heard a rattle coming from the engine back on my way home. While driving home I thought it sounded like a bolt/washer rattling around (at the time I was thinking one of the vertical bolts through the s/c). I'm not sure it was wise, but I drove the last 2 miles home. Quick inspection in the garage yielded the clanking noise coming from the front of the supercharger. I went to sleep thinking I had a supercharger with at least a trashed nose.

Since my backup transportation (motorbike) was down, I needed to make the conversion back to N/A today. I was putting the wrench into the dynamic tensioner to release the belt when i noticed the allen bolt holding the top of the tensioner mounting bracket was loose. Sweet! Just need to pull the tensioner, tighten, and call it a day.

Nope. Surprisingly the bolt holding the tensioner spun easily. And kept spinning. I then pulled on the tensioner and it popped off revealing both bolts were sheared at the block/mounting bracket interface. Looking back on it, how that bracket stayed in place on the strength of 1 thread (max) in the block I don't know.

Trying to track down replacement hardware now. Not looking forward to drilling/tapping hardened bolts out of the front of the block (will require moving the condenser and radiator).

 

Bummer man..Hope the repair goes well..

 

Thanks for the kind words. The following is neither here nore there.

Sent a few emails to gadget wondering how to disposition the URD kit during my week or two at normal aspiration. <12 hr turn around on the weekend. Once again I'm completely satisfied with their customer support. I asked Gadget if he'd heard of other's snapping these two bolts. his answer was Yes. (actually it was Yep).

 

to the point of this upcoming weekend. has anyone drilled (to extract) a hardened bolt? What am I up against?