That stinks Ron but your in good hands and your baby will be back up ripping the streets of ALBQ soon, hats off to both companies for stepping up.
haha Too funny Roy. Funny thing is, I always stay at Holiday Inn's when I travel and I think I am actually dumber.. haha Is that possible? Truth... Thanks Wade.
Waiting on the autopsy, Thanks Ron for the R&D! We will all learn something and at the end of the day your new motor will be BadAss! :grin:
All ten of my pistons had land cracks...I caught it before it blew...but only by luck...took it to the builder, and when he pulled the engine and the pistons, parts of the piston lands starting falling out...I was probably one quick sprint away from Boom! Go with forged pistons and never look back. Here are my new coated Diamond Pistons:
Ah Roy, my motor is/was fully built and forged. I promise that I will give a full eval with pics once everything is ironed out. The Crank and rods have been sent to the X-Ray guru for further evaluation.
What brand piston and what material were they? 2618 or 4032 ? The following from JE pistons SRP pistons made from 2618 wrought aluminum alloy are designed for higher performance applications such as FlyWeight or domed high compression pistons. These environments necessitate the higher tensile strength 2618 aluminum alloy. Physical Properties of 2618 Nominal Density 2.81 g/cc .100 lb/in3 Mechanical Properties of 2618 Tensile Strength, Ultimate 440 MPa 64,000 psi Tensile Strength, Yield 370 MPa 54,000 psi Modulus of Elasticity 74 GPa 10,400 psi Fatigue Endurance Limit 125 MPa 18,000 psi SRP pistons that are made from 4032 wrought aluminum alloy are designed for street/strip applications utilizing compression ratios that are compatible with pump gas. These pistons also provide a quieter engine on cold start-up. Physical Properties of 4032 Nominal Density 2.68 g/cc .097 lb/in3 Mechanical Properties of 4032 Tensile Strength, Ultimate 380 MPa 55,000 psi Tensile Strength, Yield 315 MPa 46,000 psi Modulus of Elasticity 79 GPa 11,400 psi Fatigue Endurance Limit 110 MPa 16,000 psi Coefficient of Thermal Expansion 2618 aluminum expands approximately 15% more than 4032 aluminum, thus the 2618’s initial piston-to-wall clearance has to be 15% greater. This difference is most noticeable during a cold engine start. When cold, the 2618 piston can rock back and forth producing a slight noise (sometimes referred to as piston slap) until the aluminum expands. Both types of aluminum have approximately the same clearances once the pistons have expanded and the engine is running at operating temperatures. Temperature Range Average Coefficient ºC ºF μm/m • K μin/in • ºF 20 to 200 68 to 392 23.2 12.9 Coefficient of Thermal Expansion for 2618 Temperature Range Average Coefficient ºC ºF μm/m • K μin/in • ºF 20 to 200 68 to 392 20.2 11.2 Coefficient of Thermal Expansion for 4032
Mine were Ross Pistons. Keep in mind, the summer of 2006 we did NOT have ANY options for building our motors. Mine was the first forged application. Redfox (Nathan) introduced the very first 426 motor about two months later, which paved the way for what we have today. I think PPP had their 426 motor out a days after RedFox's?
