If this was the resto forum I could see making that ASSumption.
While I haven't painted an engine in some time now, I used rattle can stuff on all my builds, none were resto types though. All of them held up fine.
The OP made zero statements as to the level of the build and your method is not resto type either, which was spray it on quick and dirty and probably wouldn't outlast a decent rattle can job.
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
