Engine Rebuilds

OK, so I am new to FV and have a couple of seasons under my belt. I am NOT a regional or national driver but rather a club racer at my local tracks. I shift at 5800 and have never seen my motor above 6100 RPM (missed a shift a time or two :eek:), run redline oil and change it regularly, adjust the valves before each race and all the normal maintenance that is required to run a FV.



With this information, about how many hours can I run my motor before it's time to rebuild it? What should I expect to pay to have a motor builder freshen it up for me?



Thanks in advance for all who reply.