Please explain turbo specifications

[wishaw]

I am trying to find out what a/r ratios and trims and everything else is all about.

So far i think the trim is the angle of the blades. The affects if the turbo is high boost or high flow.

The housing values e.g. 60mm has to do with the internal diameter of the housing. I am guessing (again) that a t28 blade would have a 2mm clearance in a 60mm housing. Since in most high performance parts gaps are bad would i be right in saying that the smaller that gap the better.

I am sure these are really nooby questions but i had a ood look through searces and couldn't really find what i was after.

If any one could clear this up for me i would really apprecieate it, as i am sure alot of people would be.

[wishaw]

Well i was way off with the second part but here is a link to tut i posted. Hope you find it useful.

http://www.skylinesaustralia.com/forums/sh...421#post1408421