DP #24 Engine failure....

[mtkawboy]

Hang in there, its been forgotten by now but there was a very large learning curve to keeping 428 Cobrajets alive in stock & especially SS for years.

[Chris "drooze" Wertman]

Originally Posted by mtkawboy

Hang in there, its been forgotten by now but there was a very large learning curve to keeping 428 Cobrajets alive in stock & especially SS for years.

Im going to "cross post" this to 2 threads related...

What yall think about these mains ?

[Peter Ash]

Normal?

[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.

[mtkawboy]

That looks like heat prior to bearing spinning, prior to the rod breaking, prior to a hole in the block with a rod sticking thru it. Remove intake & valve covers, toss rest in dumpster {428}. That was an oiling problem in them. Dont know anything about these new motors except they haul as#

[Chris "drooze" Wertman]

Originally Posted by mtkawboy

That looks like heat prior to bearing spinning, prior to the rod breaking, prior to a hole in the block with a rod sticking thru it. Remove intake & valve covers, toss rest in dumpster {428}. That was an oiling problem in them. Dont know anything about these new motors except they haul as#

I know thats what the LOOK like, Im glad someone else came to that conclusion and Im not just a COMPLETE moron.

Those bearings are BRAND NEW Out of the Plastic !

Its something in the way they are treated. They are ACL Racing Bearings Made in Australia

These are AFTER they were cleaned with tet and scrubbed dry.

The bearings and all their sisters brand spankin in the plastic look the same , except in all there is variation on the coating/heat treating, the backs are BROWN like BURNT heat Brown......

But they are BRAND New....

[art leong]

That is the coating just wash in soap and water and install. Do not try to polish them.

[SSDiv6]

Originally Posted by drooze

Those bearings are BRAND NEW Out of the Plastic !

Its something in the way they are treated. They are ACL Racing Bearings Made in Australia

These are AFTER they were cleaned with tet and scrubbed dry.

The bearings and all their sisters brand spankin in the plastic look the same , except in all there is variation on the coating/heat treating, the backs are BROWN like BURNT heat Brown......

But they are BRAND New....

Drooze...what is the date on the packaging or bearings?
Many high performance bearings that contain an aluminum layer, will get surface corrosion if they are stored improperly and have even seen this happen on new boxes were the bearings came wrapped in plastic.