In episode 156 of Semantic Mastery's weekly Hump Day Hangouts, one viewer asked whether 301 redirects from expired domains push link juice.
The exact question was:
Hello do 301 redirects from expired domains push link juice? Im thinking of buying without building a site out, just directing it to 2nd tier
The 301 permanent redirect is a good way to avoid duplicate content issues across search engines. Yes, redirect passes link juice as long as it is of topical relevance. In the video, Bradley mentioned the importance of finding expired domains with high metrics. He discusses the use of Amazon S3 web pages as a way of passing link juice from these expired domains. Marco also added that using drive stacks is a good way to push juice from expired domains.