DP #24 Engine failure....

[Chris "drooze" Wertman]

Originally Posted by Peter Ash

Normal?

I would agree since they are new. What this leads to is an error in a prior conclusion where I "THOUGHT" I saw bluing on the bearings of motor #1 the pics really dont do the blue justice, it looks bright as gun blue. while the brown is crispy looking.

That said not seeing this coating before quite these colors and with taper to the blue that looks to me like its from heat. And to me, and on some others is quite in line with a rotational bluing, it also appears at the edges of the bearings most frequent.

In motor #2 the bluing is left in the parting areas where the bearings had not worn and it looks suspect, the mains as well a mix of blue and brown like that with pretty good dyno time and say 10 passes as well as some other part runs....the coating is still evident in large swaths.

So Im taking all my conclusions on "appearance" with the exception of actual surfaces with a microscope and throwing them away.

Just thought I would share it.