I am (hopefully) 5 weeks away from being able to pick up engine parts from Ollie's and I am trying to make good use of the down time by carefully re-reading Wayne D's 911 engine rebuilding book chapters 4 (mods & upgrades) and 5 (engine reassembly).
My engine already has the upgraded chain tensioners (later Carrera 3.2 style with oil feeds), but not the updated idler arms (p/n 930.105.509.00 (left) & 930.105.510.00 (right)) so I ordered those.
Also, my engine still has the original camshaft housing oil line hardware and I do have nearly 0 gauge oil pressure at idle when warm, so I ordered the camshaft housing oil pressure restrictors (p/n 901.105.361.03 - Wayne's book lists .01 which has been superseded by the .03)
Lastly, I modified the engine air baffles as discussed on page 81 (figure 4.10) to allow the air cooling to more evenly spread between the cylinders, see the photos below:
Section from Wayne's book describing the modification:
Air baffles before modification:
Marked up air baffle:
Modified air baffle:
Modified air baffle set:
