You really find that problem is associated with gen 2s only? How?
I called them hemiroids motors for many reasons
I had the same thing happen on the sleeves on the first KB aluminum street hemi blown motor I built but they were .002 to .004 to high from KB back in the early 2000s causing water leaks into the motor
That was a much smaller motor with a bad BDS blower and a early FAST EFI system built by the owner at that time of BDS, Craig Raisbeck
Nothing but problems on that project
That motor ended up with a10:71 Littlefield Blower and a Motech EFI system with a 3 hole bug catcher hat (3000CFM I think)) on the blower back in 2005 or so on CA pump swill
