911 top end rebuild query
 

Wayne, my 79 911SC has just 69,000 miles and good oil pressure. Next spring I plan to do a top end rebuild and bump the compression up to 9.5:1. Should I inspect/replace the rod bearings? What Octane fuel will I need to use to avoid detonation with the CR bump? Should I consider switching to PMO carbs for better power and throttle response? The car is only driven weekends and auto-crossed. Track events are possible in the future. Thank you.:cool:

I'm not an expert, but from everything I've seen here and inside of 3.0's with that few miles, everything is probably still perfect in there. Plus, a tight top end and a loose bottom end = free HP.