08/02/2026
As with any engine build, not everything goes according to plan.
Just when we thought we were ready for final assembly, we ran into a few unexpected setbacks. Several small but critical OEM parts needed to be replaced, including non-reusable washers, a missing cylinder head dowel pin, and a few gaskets and seals for the timing covers.
We also discovered something we had completely overlooked when sourcing the replacement engine.
Although it's a C32B, it's actually an earlier C32B1, not the later C32B2 that originally came in the 2005 NSX. At the time, I wasn't aware Honda had revised the C32B, and we assumed they were all the same.
Because of that, we had to open the cylinder heads back up while they were still mounted to the block to install the updated Lost Motion Assemblies (LMAs). Only then could we finish the valve adjustment and continue with the timing belt, water pump, and front main seal installation.
While inspecting everything before final assembly, we also pulled the intake manifold and found the air exchange chamber bypass plates were loose. We took the opportunity to clean the manifold and replace all the gaskets before putting it back together.
None of this was part of the original plan, but I'd much rather find these issues now than after the engine is back in the car.
We're getting very close. Just a few final adjustments remain before this beauty is ready to go back where it belongs.
A huge thank you to Ben and Cliff Distinctive Auto Detailing from Daisy Import Auto Care for helping with the installation and sourcing the last OEM pieces, and to Christian Mittendorfer Christian / ATI Performance Products for helping source many of the parts at the beginning of this build. I truly appreciate all the support.
👊🔥