I made this adapter plate to fit an IHI 3 bolt flange turbo to a HF manifold. The peice used started as a .5" thick by 5x12 cold rolled steel.



I started by drilling the 4 holes for the HF manifold.


I tapped those holes and installed studs


I did the same on the oppisite side but for the 3 bolt turbo.


The hole in the center is how I centered both of them up.

I then milled 90% of the steel from the center. I used the HF mani. gasket to get a general idea of where it fits. It needs to be portmatched now



here's looking into the turbo from the manifold side



here's the turbo side with the turbine on


Here it is all most finished. the plate needs to be cut down some so the compressor can rotate up.

I did this for a guy that bought this turbo. Adapter plate and turbo cost him 85 bucks. not bad for the ghetto turbo junkie

I hope this helps some people boost on a budget.

This took about 2hrs