Hello Larry I have never owned a revmaster engine, however I have worked with revmaster on several occasions with the Revflow carb. Based on this I can say that: They are willing to discuss all problems with you; They are very reachable; and, they have been in business a long time. On our net I can't remember any direct negative comments about the turbo. At least one of our group is flying that engine. Check the archives. I only personally know of one person that reported having had a broken crank.
Orma L. Robbins Southfield MI 19 Years flying KR-2 N110LR http://www.aviation-mechanics.com
