I just bought a set of TRW piston's, 30 over, forged, off ebay for $315 (428 SCJ). Asked the guy about ring sizes and he threw in a set for free! Problem is, I am not sure what I have here. They are Speed-Pro, and here is what is on the box:
8 - 4.130 x 5/64 BR-18PF-24 Top Gr.
8 - 4.130 x 5/64 RBT-10-50 2nd Gr.
8 - 4.130 x 3/16 SS-50U-617 Btm Gr.
400PR 18-18-21 10-76
SS-50
OIL RING
R-9221 0.035
M4
What does "broken set" mean?
What material are they made of?
Thanks!!
Mike