I'm about to install the Yella Terra 1.9 RR's, L76 springs along with new seals and retainers. In my conversations putting it all together and in reading, I don't remember seeing anywhere the need for a new tensioner or increased wear due to the rockers higher ratio. The L76's will afford a higher spring rate (avoiding valve float) while keeping the seat pressure just a little above stock, thereby avoiding the unnecessary increased wear on the valve train that the heavier spring rates create. You could always do the tensioner as preventive maintenance if you like, it just might not be needed.
I don't plan to... If I was going to open all that up then I'd just do a cam. Lol... Just my $.02
Again, anyone correct me if I'm wrong!
