I have a little idea that imworking out right now, and building. Using a compressure houseing off of a Turboed Grand Prix, im driving mechanicly with belts, with a final gearing up of 9:1, leaving me at 45kRMP when motor is at 5k. Knowing that when it was in the 3.4L GTP it spun at 120k producing 22-26psi of boots before the blow off valve.

Now i got the material for making brackets and this idea on how to drive the hole thing off the supentine belt system and hanging off of the alternator...

also the grid is set at .5", no layers were used due to time i had on the comp, and i got a simple v-belt design to drive the impeller and an idea for a tensiner built in there, just left out spring...



I have also found bearings that are rated for speeds of 38k, hearing from others is that this is actually only 2/3 of what they can handle, leaving a max of 57k if disired.

Question though is, would running a small 22" 4L V-belt be ok at those speeds, driving the impeller to the 50k mark?

Any opinions would help greatly as well as any ideas on what to drive the impeller with to give another 3:1 incresse in RMPs.

 

No one has a say, ok fine.

 

well, why don't you just use the whole turbo setup? it's a very simple one.

the belt drive Idea will need to be like a powerdyne setup where they have a similar desighn but, the compressor is so small that once you got it spinning fast enough to build boost the balancing on the shaft will need to be 100% perfect or it will tear up very very quick.

 

well i dont have the entire turbo set up, that woulda cost alot more than 125 that i paid for a housing and a balance impeller. Plus gearing it and making brackets is more fesable at my lvl then making my own heades and piping.

 

So you want to convert a turbo into a centrifugal blower basically? My question is why? In the long run it will be cheaper to go with one or the other (centrifugal or turbo) rather than adapting it. Reliablility will most likely be a problem with it. Also being belt driven, belt slip will probably be an issue, as well as the sideloading on the bearing of the impeller from the belt tension. They're not designed to have that kind of load and I would imagine the bearing would wear very quickly.

As far as cost goes in this project, $125 (what you spent on the turbo) is nothing. All the brackets and pulleys will have to be custom made, plus the tubing going from the turbo's inlet to a filter, and the output to the motor's intake. Plus you have oil lines, piping to an intercooler if you're using one and a bunch of other stuff.

I'm not a turbo expert so some of this info may be incorrect, if it is please correct me...

BTW, I'm not trying to be an @$$, I'm just trying to warn you that it will be cheaper to go another route, plus the power gains you would see from it would not be as much as dropping in a healthy small block.

 

i say go for it.u did some time designing it might as well try it.I would try somethin different from the vbelt.

dave

 

hmm, well i would perfer gear, but they too hard to come by and be light weight and cheap. Chain would fly apart at 15k rp, dont even try 50k. V-belt wont fly aprt with a tensioner, may slip, but is light and cheap. Surp belts weigh too much if i can avoid it.