The manifold started out as 8” long 1 3/8” brass.
I divided it into 4 even sections & added some detail. On my lathe at home.
Through drilled the hex
Kinda goes against the grain, but I went ahead & engine turned it before cross drilling.
Cross drilled
Next I created my own 120 degree V block to fixture the 1 3/8” aluminum to cope it with the correct angle. Ironically I used my old scrap pieces of aluminum from my pulley build.
Then used my newly created V block to fixture the aluminum Hex. I created the angle then drilled the pockets for the stainless 10-32 screws to hold it together.
Yeah that one on the right was a mess up.
Once I transferred the screw holes I drilled & tapped then made the final measurements for the stand offs. I machined them final length, drilled then tapped them for 3/8-16.
I then taped it all off & finished tapping all the holes for 1/4” NPT
