Cascade Crew

Twilightoptics

Found this. Just like it did 6 years ago before I had it line honed.

Dewey316 · Posted: Fri Aug 07, 2009 6:51 pm Post subject:

well, its a good thing you took her apart.

Going to re-line-hone it?

chevymad · Posted: Fri Aug 07, 2009 7:11 pm Post subject:

That doesnt look like cam material.. looks more like the align bore was waay outa wack!

I see a few lines from debris. But that wasnt the major issue.

Xophertony · Posted: Fri Aug 07, 2009 7:18 pm Post subject:

help out us less knowledgeable. what are we looking at here, and what does it mean?

Al Hasse · Posted: Fri Aug 07, 2009 7:31 pm Post subject:

I'm guessing that the bearing material has worn away, hence the copper color.

chevymad · Posted: Fri Aug 07, 2009 7:44 pm Post subject:

Most bearings are 3 layers. Steel backing, then copper, then lead babbit. You're seeing where the babbit has been worn away down to the copper layer.

But look its only worn on 1/2 of the bearing, and not the same on every bearing. To do that the crank has to be pushing on that half more then the other half. It might be normal in an extreme case to wear out all the bottom halves(the half without the groove) because those halves are what the cylinders push down against. But it should never wear half here, half there. This means something was crooked. Most likely the crank bore in the block The cam Paul had go flat accelerated the wear by putting grit in the oil. You can see some of that in the parallel grooves and specs stuck in the babbit. But the fact that Paul said the rod bearings arent too bad, means there was a problem more specific to the mains. (the mains also get oil first, so they get the most grit)

I also don't like how the copper is showing in a sort of diagonal pattern. Like hte bearing and bore are cocked a bit.

dlp · Posted: Fri Aug 07, 2009 8:29 pm Post subject:

That sucks. Looks like there is a problem with the crank? If the line hone was done incorrectly shouldnt the bearrings be coppered in a striaght line?

Twilightoptics · Posted: Fri Aug 07, 2009 8:37 pm Post subject:

Because the wear is identical I wonder if the line hone wasn't actually done. Crank was turned last time and checked out. I'm the machinist this time. :0). Line bore/hones are done by only a few places so it will be farm out but to a different place.

Alot of times the bearings do t wear completely even. I put new bearings in and measured and measured crank and all is round. So having the #1 opposite the rest means line bore.

Quasi-Traction · Posted: Fri Aug 07, 2009 9:00 pm Post subject:

Well, I guess you were right about your consistant low Oil psi, hot.

Want some help removing the motor?

Twilightoptics · Posted: Fri Aug 07, 2009 9:01 pm Post subject:

Quasi-Traction · Posted: Fri Aug 07, 2009 9:02 pm Post subject:

Shoulda figured. Can't really remove the crank and bearings with the motor in the car, lol.

Schultzy89GTA · Posted: Fri Aug 07, 2009 9:12 pm Post subject:

Paolo.

http://paoloengine.com/

Thumbs up

-Schultzy

Twilightoptics · Posted: Sat Aug 08, 2009 6:41 am Post subject:

LOL Looked at their pictures. We have the exact same equipment except for their head machine.

I bet they farm out line bores too. I might check em out!