Update time.
I found the limit of stock ca18det pistons finally. They are pretty tuff and were holding up to 25psi really well. Only problem was that the forged motor was waiting and I was running out of patience for the motor to blow so I decided to see what 35psi would do to a stock motor. Unbelievably it lasted a few days before melting a piston and I must say that it was a fun few days. 3rd gear frying no clutch required. anyway here is a pic of my new paperweight.
I was really surprised that the the stock rods held up to the abuse and even the bearings were still in excellent condition.
Now for some forged loving
pistons and rods are balanced, prepped and clearances perfect for big power