Garrett GT20 Project

[Jonny81191]

To line up the holes use a big flat bit of blue tack across the flanges, press together then pull apart and see how far out you were

Or get a bit of pipe thats nearly the right diameter, wrap it in tape till it is the right diameter (im guessing man and turbo are different diameters) then use that to align and a drill bit to mark

Hi, I have tried to squish some bluetack into the holes:





What should I do with these impressions on the bluetack?

use it to make a mold and make a template from plaster of paris, then take it to an engineering place to get them to make you an adapter plate.