Good lord these things are loud ! Just got my Gen3 5.0L Aluminator clone on the road and was astounded by how loud the piston slap noise is. If you‘ve been following my build thread you’ll know I have been putting together a 2021 Mach 1 I picked up from a Copart auction that had engine damage. I used a new block, crank, Manley rods, and Mahle pistons to duplicate an aluminator for improved durability. I was surprised at the noise levels between 2-3k RPM when lightly loaded. Accelerate or decelerate it goes away but steady state light load it’s very noticeable. Much worse cold of course but still noticeable hot.
Per Mahle spec sheet that came with the pistons PTW clearance should be 0.0023“. Mahle website says 0.0025 - 0.0033. I was right at 0.0025 - 0.0027 so all should be in the ballpark.
I’m currently running 5w30 break in oil and will be switching to 5w-50 soon.
Anyone else have experience with these?
Per Mahle spec sheet that came with the pistons PTW clearance should be 0.0023“. Mahle website says 0.0025 - 0.0033. I was right at 0.0025 - 0.0027 so all should be in the ballpark.
I’m currently running 5w30 break in oil and will be switching to 5w-50 soon.
Anyone else have experience with these?