Not knocking what your doing. Just letting you know that I tried the same thing but in a smaller housing. There were no options of any other style housings at the time aside from bolt on mitsu flanges. I hope it works for you and if it does then Great! Back when I tried this BEP was only...
I machined a bep housing to accept a hx50 about 9 years ago. Only downside was that the turbo didnt like all the back pressure produced in the housing. This was a bolt on .55 housing. It constantly snapped the shaft after a months use. I tried it with 3 different hx50's.
Autozone commercial here. We use Autolite filters for commercial. They are made by fram. Honestly though, these commercial filters sell for dirt cheap.
I heard the shaft tears up the front case. Doesnt matter to me if you use it. Just throwing it out there. Me, myself, have never used anything but OEM so I couldnt say from experience.
I sure its some kind of thread repair. As long as it holds your plug and doesnt leak out of it then you should be fine. You can stick a old plug in there and fill that bowl with some kind of liquid and see what happens.Im sure this seems more than what your probably hoping to do. If thats the...
Those imperfections/damage on the bowl of the head will not help with detonation. If that can be fixed then go for it. I dont see why it wouldnt be usable.