Hi from the Space coast. I’ve been a member of another site but need to break out and learn more about Renault engines. I currently have my original 821-30 about to receive the pistons and liners . The original head has been rebuilt. Waiting for the alignment tools that should be here along with hylomar sealer by Wednesday. For me it’s my first attempt to assembly a Renault wedge engine. Doing a lot of reading in the shop manual but the 843 crossflow needs a cam designed for the rear belt assembly for the water pump and generator. I will be replacing the valves to Gordini specs, or specs suggested to me by other builders. Waiting for a shop manual recently purchased for a r15/ r17 that may have some build directions for me.