The cylinder walls have a finely honed surface with plateau honing for good quick ring seal. The milky look is WPC treatment. The Japanese WPC treatment helps ring seal, cylinder wall durability and greatly increases life. To learn more about WPC, read here.
FX Motorsports Development replaces the weak cast iron main bearing caps with these billet steel parts. The billet caps are much stronger and eliminate the bore distortion problems.</span
The main bearing caps are nitrided for hardness on the register, you can see the black nitrided surface. high strength ARP studs are used, replacing the stock factory bolts. The block must be re-align bored after installing the caps. The locked and loaded block can now withstand over 1000 hp if need be.You can see how the buttresses of the MID sleeves eliminate any cylinder shifting under load. Also note how the coolant is still free to circulate around the top of the cylinders. After machining and the installation of the sleeves, the block is decked in a mill and hand lapped for optimal sealing.
