My site is saturated with posts and pages about most subjects related to my topic and these pages already rank extremely well for their given keywords. I'd like to add an entire section of extremely detailed, definitive in quality, guides about repairs and such but there is little chance that doing so will not cannibalize existing keywords, in essence creating more competing pages for my own keywords on the same site.
I'm going to add them to a blog on blogger instead, with links that point back to my site for various items my site has for sale. Product links.
Question: The site will have value for sure but are the links to products on my other site likely to cause the site to be penalized? Will Google differentiate between a site built to pass rank to the first and a site built with a real purpose that also links to the authors "other" site ?
Does anyone have any recent experience with this?