something that applies to anything in life is that most cheap things usually end up costing you more in the long run anyway....it applies to anybody, whether your a strapped student or an oil sheik. There are a few exceptions, but when it actually has to do something important more often than not it's going to come back and slap you in the face.
I know you look at it in it's simplest perspective of "it's an air compressor"...but what about the material used? what about the manufacturing process? how strict is the quality control and quality of workforce behind the product? what kind of reputation does the product carry and what is the general customer satisfaction level (you can't count the 16 year old know-it-alls like myself who could screw up an oil change)
hell, my grandma used to inspect mil-spec bearings for jet engines that would turn nearly two complete revolutions with a light breath...and all they were were a good $50 of titanium. The end cost with labor was nearly $10,000 a PIECE! I'm sure you could build a turbo for $50 given 1st year college level skills and a little CNC experience...but would it be the same as the work of a few 4-year mechanical engineers with thousands of dollars of manufacturing and testing equipment? I know your pinched on money, because I'm in the same position...but it's almost like the $1 tools you find at the hardware store. They are there plain and simply to grab your attention, even though you'll go through 50 of them before you bust that $25 one in the back.
A lot of people don't tell you "do this instead" because it just randomly popped into our head at the moment...usually when somebody tells you that it is because they have seen what has happened, or experienced it firsthand and want to keep people from blowing something up. And it doesn't stop at turbos...would you put $200 rods or pistons in your car? how about $150 cams? Would you put a wally world stereo in a car with $1500 of speakers? But then again it's your car...i wouldn't dream of skimping on a major component, or modifying something that I wasn't sure I could do successfully...you don't just suppose, you have to KNOW! If I did everything on an "i suppose" I'd be driving down the road listening for even the faintest abnormality...especially given my supra's reputation for kicking me in the balls when I throw cheap parts or crappy mods at it
wow...talk about rambling. I've gotta lay off the dew :eek3: