Timekeeper explosion in P400

[CursedH1]

Figured I'd go ahead and post here as a warning to others.

Timekeeper set installed in a brand new P400 in 2022. 20k miles on the motor and Timekeeper set. Around Thanksgiving I noticed a knock coming from the engine, then found glitter in the oil.



Thankfully the pieces of the exploded dogbone were found and the engine is being rebuilt. This time with the standard timing chain.

 

[DieselCash]

Wow, that is wild! How bad did it mess up the engine?

 

[SnowDrift]

Has the cause been determined?

My set was purchased around the same timeframe for my engine, so I guess it will sit until this is resolved.

 

[CursedH1]

Wow, that is wild! How bad did it mess up the engine?

Thankfully the engine itself appears to be as unscathed as possible. The pieces of the broken dogbone are accounted for in the oil pan but there still was glitter. On Monday we order all new bearings/gaskets/seals/gapless rings. Already have all new ARP hardware ready to go. Also taking the opportunity to change to the P400 DS4 IP.

Has the cause been determined?

Not sure we'll ever really know - but I know that there was a thicker gasket put on the water pump / backing plate to make sure that the "dowels" didn't interface with something they shouldn't have when they were installed.

 

[SnowDrift]

Those teeth appear peened so it makes me wonder if they are either soft or if the tooth spacing in inconsistent, possibly causing the dog bone to fatigue.