John's EZ36R H6 818R Build

[Hobby Racer]

I'm getting way to good at removing the powertrain quickly!




Here is the evidence of a catastrophic failure. That's bearing material!



On the plus side my fix for the timing chain worked as the timing chain never jumped!



Looking at the datalog, I can see that the oil pressure dropped steadily from 56psi until the motor blew. The log is about 5 minutes of run time. The green line is oil temp and the red line is oil pressure. I have no idea what caused the slow but steady drop in pressure yet.

[Bob_n_Cincy]

Looking at the datalog, I can see that the oil pressure dropped steadily from 56psi until the motor blew. The log is about 5 minutes of run time. The green line is oil temp and the red line is oil pressure. I have no idea what caused the slow but steady drop in pressure yet.

John,
I am surprised at your steady 56 psi of oil pressure. My stock EJ255 engine runs at 85 to 90 psi which is the stock oil pressure relief valve spring setting.

The 6 million dollar questions are:
1) Did the bearing fail because of lack of oil pressure?
2) Did oil pressure drop as a result of bearing failure?
Lets us know if you find any more clues.

[Hobby Racer]

... Lets us know if you find any more clues.

I should be tearing it down completely next week. I'll post back any findings.