I have M90 that I bought off a wrecked car b4 I got a look at the internals. I knew I was gambling at the time and I guess I lost; but at least I’ll have a conversation piece. But I also have a good M90 I would like to have ported. So I want to figure out if the scoring in this housing is too much (which I’m pretty sure it is, lol) for anyone to use. But mainly I would like to get tips on porting this from those Bills and such who has done this before.

Time for pictures

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Much of this scoring appears to be .003 / .005 at least
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Ed

Don't waste your time on it.

I didn't think it was good to make us of. But I want to practing porting this myself before I attempt porting my good one I bought off of Mike1995 any useful advice?

Ed

Use Dremel flap wheels.. Get a bunch of 80 grits. Don't apply pressure or you'll smoke a dremel tool. Go gentle..and it'll take it right on down.

I went pretty far and have them right here if you'd like to browse
http://s20.photobucket.com/albums/b246/billboost37/

Password is "Boost" the subalbum is Supercharger polishing.

Enjoy. I did it all with dremel flap wheels, then some abrasive puffs. Mostly the wheels though.

Do a search on the superchargers I did for the bullet, chadow427, and haro.