Today at Atelier Kaz - ex-Honda R&D, F1, Indy/CART engineer

3rd round of valve clearance adjustment done.
Finally, the engine is ready to be closed.




New NGK spark plug.
This NSX is non-OBD2 spec so PFR6G-11 used.




As same for the rear one, replaced the TB front mid cover with the later spec one.
As you can see, there is extra recess to clear the gap against the cam pulley.






Valve covers cleaned and new gaskets/seals were installed.
Before/after.






As reported at the very beginning, the Front IG coil cover had several
cracks so ordered the replacement.
The original low height cover designed for 2pin IG coil are no longer available so
replaced it with the later spec 3pin style one.

I actually like it because it adds bit more aggressive looks for the somewhat
dark tone engine bay.


You could replace the rear one to the later spec as well but for now,
I’ll keep the original one and just replace the rubber seal as it still looks
very clean.