HyperactiveSloth

OK, I first want to start off by saying that I will be EXTREMELY grateful for all help you guys can give me. Also, before you ask, YES I did search the forum first to see if I could find the advice and answers I'm looking for and found lots of helpful stuff, but not enough. Besides, if I don't post my crazy ideas here then you wouldn't be able to help and/or flame me mercilessly...and what fun would that be?¿?
I tend to be VERY long winded once I get started so I'll try to make it short and sweet and I'll fill in any blanks when you ask me.

So, why am I crazy? What I'm trying to do is backwards of the usual. Instead of building a turbo kit around the available compressors/turbines, I'm going to fabricate my own turbine and compressor and try and build it into an existing turbocharger! Now, I want you to bear with me on this. I know most of you are already getting ready to reply with "Why the hell would you do that?" or give me suggestions on what I should do instead...which normally would be appreciated...but not in this case. What makes this even stranger is that I'm also going TOTALLY backwards with this build cuz instead of looking for a turbo for my engine, I'm looking for an engine to build the turbo for. Like I said, you'll just have to bear with me. I know it's strange.

This is basically what I'm trying to find/figure out:

Engine...
1) I need to make this for a car which already has turbos commonly available (and used) for it, maybe even one that is common with a factory turbo. Obviously the more easily it can be modified, the better. So, what I'm basically needing to figure out is what cars/engines are readily available, reasonably inexpensive, and commonly turbo'd. (Needless to say my first thoughts were a Civic or else go old school for a junkyard 'Stang or somethin') What are your ideas?

2) What charger(s) for ^that^ engine are most used or easiest to work with.
(side question: Happen to have any "headed for the dump" chargers with trashed wheels? *hint hint*)


Turbines...
To get me started with the 'tech' part of this, I'm looking for info on exhaust to intake ratios. No, I don't mean a/r ratios (which I learned tons about, thanks to this forum ), I mean the ratio between the "input" of the turbine and the "output" of the compressor. If you had a theoretical turbocharger that blew (intake) at the same efficiency that it was blown (exhaust) what would their relative sizes need to be?

Well, I'll start out with this and see where it leads.
Feel free to grill me about what the hell I'm talking about, and I'll feel free to pick your brain.

THANKS!


P.S. I know I sound like a raging geek in this post, but I really am a car guy to the bone. Don't hesitate to throw in some random cool ---- to keep this thread interesting

Briman2021

DSM or Starion/Conquest come to mind right away. Tons of turbos get used on either, and stock turbos (T25, 14B, 12a) from either can be had for cheap.

HyperactiveSloth

Thanks, Briman2021

Now isn't that sad. Out of all the guys here, the only one to respond with a recommendation is a fellow noob.

You really mean to tell me that out of all the technical expertise floating around this forum, NO ONE in interested by custom making a turbo wheel OR cares to discuss turbine/compressor ratios?¿?

I mean c'mon, any help would be a godsend and even flaming would be entertaining...but being ignored...that's just sad

Zeusfire69

All I can can say is that what you are propsing is a technical nightmare! The equipment needed for setting up a turbine/compressor wheel(s) is astronomically expensive. Even if you do firgure out the numbers and what you would want to build, the money that would go into truly making a CUSTOM turbo from scratch yourself would be totally pointless unless you planned on opening a shop to sell and build turbos.

Not to be totally useless, here's some tools I found for calculating turbo size for any particualr application...

http://www.turbofast.com.au/TFmatch.html

http://www.rbracing-rsr.com/turbotech.html

http://www.smokemup.com/tech/turbo101.php

http://60degreev6.com/discussion/dlo...ff5c9d8fcd9ebe

http://www.smokemup.com/auto_math/turbo_size3.php

Sorry not to be more helpful...

USS

What you're doing is totally irrational and stupid. Good luck failing

RKSskier

You dont have a engine you are finding a specific turbo or size or special need for, and you are choosing the engine around the turbo that you dont have or know what or why or how to do or make. Are you going to make the compressor and turbine all from scratch?> if so how? anyways, kinda cool to see someone creative.

jdm monkey

You are also going to need to build a custom engine built from scratch to match your turbo.

Obscene_CNN

build your own turbocharger eh....

Well its time for you to bone up on your math.

When your ready here are a few technical articles for you to read.

http://naca.larc.nasa.gov/reports/1920/naca-tn-11/

http://naca.larc.nasa.gov/reports/1920/naca-report-29/

http://naca.larc.nasa.gov/reports/1921/naca-tn-48/

http://naca.larc.nasa.gov/reports/1939/naca-tm-902/

http://naca.larc.nasa.gov/reports/1942/naca-wr-e-197/

http://naca.larc.nasa.gov/reports/1945/naca-report-806/

http://naca.larc.nasa.gov/reports/1946/naca-tn-1068/

http://naca.larc.nasa.gov/reports/1947/naca-rm-e7c05a/

http://naca.larc.nasa.gov/reports/1947/naca-tn-1216/

http://naca.larc.nasa.gov/reports/1947/naca-tn-1214/

http://naca.larc.nasa.gov/reports/1947/naca-tn-1313/

http://naca.larc.nasa.gov/reports/1948/naca-rm-e8f04/

http://naca.larc.nasa.gov/reports/1948/naca-tn-1713/

http://naca.larc.nasa.gov/reports/1949/naca-report-936/

http://naca.larc.nasa.gov/reports/1949/naca-tn-1932/

http://naca.larc.nasa.gov/reports/1949/naca-report-935/

http://naca.larc.nasa.gov/reports/1950/naca-report-954/

http://naca.larc.nasa.gov/reports/1951/naca-rm-e51a02/

http://naca.larc.nasa.gov/reports/1951/naca-tn-2464/

http://naca.larc.nasa.gov/reports/1951/naca-tn-2421/

http://naca.larc.nasa.gov/reports/1951/naca-tn-2584/

http://naca.larc.nasa.gov/reports/1951/naca-rm-e51d20/

http://naca.larc.nasa.gov/reports/1952/naca-rm-e52h11/

http://naca.larc.nasa.gov/reports/1952/naca-rm-e52e05/

http://naca.larc.nasa.gov/reports/1952/naca-rm-e52e22/

http://naca.larc.nasa.gov/reports/19...a-report-1083/

http://naca.larc.nasa.gov/reports/19...a-report-1082/

http://naca.larc.nasa.gov/reports/1952/naca-tn-2806/

http://naca.larc.nasa.gov/reports/1952/naca-tn-2691/

http://naca.larc.nasa.gov/reports/1952/naca-tn-2610/

http://naca.larc.nasa.gov/reports/1952/naca-tn-2835/

http://naca.larc.nasa.gov/reports/1952/naca-tn-2749/

http://naca.larc.nasa.gov/reports/1952/naca-tn-2706/

http://naca.larc.nasa.gov/reports/1953/naca-rm-e52l22a/

http://naca.larc.nasa.gov/reports/1954/naca-rm-e54d23/

http://naca.larc.nasa.gov/reports/1954/naca-rm-e53l02/

http://naca.larc.nasa.gov/reports/1955/naca-rm-e55e13/

http://naca.larc.nasa.gov/reports/1955/naca-rm-e55f23/

http://naca.larc.nasa.gov/reports/1956/naca-tm-1385/

http://naca.larc.nasa.gov/reports/19...a-report-1279/

and thats just on compressor wheels.

These guys did it all with slide rules so no cheating and using a computer

HyperactiveSloth

,Yes, but I'm not using a fan, screw or a centrifugal pump...so almost none of that applies, but I appreciate the advice.

Obscene_CNN

All existing turbos use a centrifugal compressor. I strongly doubt your engine pumps enough air to even begin to consider an axial compressor. Read through more than the first few links I gave you. Its very good information.