zz502? crate problems
 

4 miles on new crate motor and rocker arm nuts backed off can,t wait to see what comes next .All the rocker ***** are galled.and looks like they are made of the powdered metal process .Chinese ? any Ideas this is the new zz502 deluxe engine also lots of dust in the pan when i pulled it to change it upon first arrival ,anyone experiance these problems.

Does anybody have any regrettable encounters first or secondhand, with the ZZ502? Over the top oil utilization, unfortunate workmanship, and so forth? I'm thinking about buying one and simply maintain that should get my work done. I will likely add a Holley C950 EFI to it. Stringently road use.

From what you've described, it's possible that the rocker arm nuts were not torqued to the correct specifications during assembly. You'll need to return them to the specifications outlined in the service manual. It's also a good idea to check if the threads are in good condition.