Passing "link juice" from old domain to new domain

[RoxBrock]

I am purchasing several websites from the company I work for and starting my own company.

1.The websites have not been updated in several years
2. The websites have poor SEO rankings
3. Though bad inbound links have been removed, there may still be some added by a black-hat SEO company

I would like to start a new website and move all the content to that site. My questions are:

1. Will it hurt my new website rankings if I redirect the old site content to my new site and delete the old sites--due to possible bad inbound links, losing rank due to redirects (I have lost rank from redirecting in the past)?

2. If related, isn't it better to put all the content on one website?

Thank you.

[Chris_Hickman]

If you are concerned with the 301 redirects no passing all the juice you do have the option to contact the site and ask them to update the link. This can be time consuming if you have a high number of links. Your best option is to review all your links in Webmaster tools and remove any poor links through contacting the site, or disavow, then redirect the site.

Ideally, you would want all content on one site, mostly because you don't want to be competing against yourself for rankings.

[DmitriiK]

Hi there.

1. Well, it depends on the link. As we know, with 301 redirect about 95% of link juice is being passed on. Therefore if a backlink is spammy, 95% of its "spaminess" will be transfered too. Again, it depends on the quality of backlink. I say look at old domain backlink profile, disavow all bad and spammy links and after it's disavowed do domain redirect.

2. Again, it depends. If all the content from all websites is related, not duplicate and good quality - it is better. You would basically just combine all the goodies in the same spot. However, if content is not related, bad quality - you gonna get one huge dump instead of several small ones I prefer small dump which are less noticeable

Hope this helps