Name this bolt! Multi-part, bazaar mode of failure!

[cnavarro]

Originally Posted by Jake Raby

Yes... And its not the first time we have seen this.. I have seen an engine run fine with one rod bolt shot through the top of the case! It was taken to a dealership and they didn't know what the bolt was or where it was from!

The engine ran like this for a good while, until the remaining bolt snapped from seeing double the normal load as it was trying to retain the rod cap all by it's self.

Look closely, the bolt in the picture never broke. Its also not stripped.. It literally fell out during engine operation.

.....and people wonder why the only engines I'll warranty are ours with full upgrades!

Just like the '06 Cayman the local dealership dived into. The rod bolts were finger tight! Probably would have suffered the same fate if driven any longer.