I bought new 42220 Manley wrist pins last year because i was advised to due to stroke and power increase. They have 14 dyno pulls and seven runs on them. My machinist called and said they were worn enough he didn't want me to reuse them! They supposedly should have been good enough, being .180 wall x 2.93 chrome moly. My CP pins were .150 wall and had over 300 runs on them and still looked good .
I called Trend and they had ONE SET of .205 wall DLC coated pins on the shelf. I bought them. They better hold up. $605 to my door.
I never did get the vacuum up so the motor never saw more than 4 inchs of vac. So my question is why would those Manley pins wear so quickly?
That wear is surprising to me too.
In the old days, using 0.150 wall pins was more common, but I changed my mind on that around 2014. And that was with 4.375" bore (lighter pistons).
I plan to use 0.185" wall pins, and have thought about tool steel (H13). Pistons around 575 grams.
Your 0.205" should be very strong.
I'm assuming the rods are bushed which would make the wearing surface on both the rod and piston softer than the pin. Even if a dry assembly were responsible, one would think the pistons and rods would be damaged more than the pin.