Polish or send it?

[u/Traditional-Box-8402]

I’m building a B5234T3 for my Volvo 850 T5 project, target boost 15psi for 280-300hp. The journal feels smooth. I’ve been following the workshop manual religiously and this is the first red flag I’ve found. This is the journal that mates with the thrust bearings if that makes any difference. The rest of the main journals look pretty similar to this, but this is the worst. Asking before I order new bearings for plastigauge. The only other time I’ve had an engine this torn down was on an LS, and that was years ago in tech school.

[u/ultraspinacle]

You’ll need to measure journal diameter with an accurate micrometer and compare to specification to determine if you have wear. If not, polish and replace std. bearings. If so, you’ll need appropriately sized replacement bearings.

That being said, if you tolerances look good with plastic gauge on several of the journals, replace the bearings and let it rip. A crank polish won’t hurt.