With the engine more-or-less in its final position, the next steps are wiring and plumbing the various accessories. I started with the cooling system.
Using some rough measurements, I searched through the molded coolant hoses on the back shelves at my local auto parts store, to find the right combinations of inner diameters, curves, and lengths. The hoses attached to the radiator have a 1.5" inner diameter, whereas the hoses attached to the engine have a 1.25" inner diameter. Therefore, it was necessary to use single-piece stepped hose adapters, which I found on Amazon made from billet aluminum. The lower adapter also has a threaded port machined into the side, which I used for the heater core return hose (originally 1/8 NPT, bored out to 1/4 NPT). The final parts list consisted of:
Lower Hose
- Dayco 70989 Hose
- Dayco 71852 Hose
- ICT Billet Radiator Hose Barb Coupler with 1/8" NPT Port 1-1/4" to 1-1/2"
Upper Hose
- Continental 62968 Hose
- Continental 61782 Hose
- ICT Billet Radiator Hose Barb Coupler 1-1/4" to 1-1/2"
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