Compressor wheel size comparison. Can it alone determine volume of airflow or HP?
 

Hello guys i got a question about compressor wheels.


compressor wheel 1 exducer82mm inducer 54mm

compressor wheel 2 exducer 75mm inducer 60
mm

wich compressor wheel make more volume/hp?

re: Compressor wheel size comparison. Can it alone determine volume of airflow or HP?
 

Actual power output is determined by turbine wheel, not compressor wheel. Flow rates is compressor wheels are based upon their ability to compress air from the turbine.

With that said, compressor wheel profile is important too.

So instead of this abstract questioning, please show the turbos you propose as well as the purpose and power output you plan. Ok?

re: Compressor wheel size comparison. Can it alone determine volume of airflow or HP?
 

re: Compressor wheel size comparison. Can it alone determine volume of airflow or HP?
 

I'm creating a link to a white paper I made about year ago for an automotive mechanics seminar about how turbo designs effect power. I'll link our here shortly

re: Compressor wheel size comparison. Can it alone determine volume of airflow or HP?
 

hello

i understand you, and 1 turbo is still on te car.

Inmagen if you got the same turbine, wich compressor wheel be better. 1 of 2 and tell why(example sape is the same)

re: Compressor wheel size comparison. Can it alone determine volume of airflow or HP?
 

Again, we have to see the profile and size. Really.... is not that simple.

re: Compressor wheel size comparison. Can it alone determine volume of airflow or HP?
 

ok but over 1 year dont havr te time now.

but again same exhaust turbine, samen profile compressor wheel just differebt size. Cant you say a little bit what the effects are.

i wil make pictures in rhe future

re: Compressor wheel size comparison. Can it alone determine volume of airflow or HP?
 

No. Not with any certainty at all. The compressor wheel profile determines the efficiency of the ingested inflow of air to be converted to pressurized airflow. It may be a single bladed inducer, a splitter bladed design with a curved edge, etc. It all becomesxafactor with the inducer/exducer design sizes.

Can you at least say what company the turbocharger wad made? What engine application it came from? Compressor housing diameter size and A/R?

If not, wet can't really help at all, honestly.

Re: Compressor wheel size comparison. Can it alone determine volume of airflow or HP?
 

its from china... twin scroll(rigjt one,left is a to4e). I wil make pictures when i got time i wil take both turbo apartto see the wheel.
Thankyou for the fast answers

a/r 50
https://cimg4.ibsrv.net/gimg/honda-t...711d551a0.jpeg

Re: Compressor wheel size comparison. Can it alone determine volume of airflow or HP?
 

We'll get into the "twin Scroll" / Divided housing debate later (Hint: you more than likely don't have a "twin scroll" housing just a divided housing). But the fact that it was one of these Alibaba compressor wheels, means that you'll need to try them out to see. I was wondering why these measurements just seemed so odd.

Re: Compressor wheel size comparison. Can it alone determine volume of airflow or HP?
 

I'll add a simpler answer: the only way to determine potential power from a compressor wheel is to see the compressor flow chart for each compressor wheel. Size matters, but so do a LOT of other things. There are many times when a smaller wheel can actually flow a LOT more air that a larger wheel. For example, the new gen2 gtx2867r's are outflowing the older style GT3076's.

Shodan, I would actually argue with you that power potential is reliant on the turbine. Sure, it can definitely be true. But there are plenty of times when the compressor gets maxed out before the turbine does. There's also times when a turbo as a whole gets maxed out, and then slapping a larger compressor wheel on can flow a considerable higher volume of air due to lower turbo speeds and the extra exhaust bleeding out the wastegate.

Re: Compressor wheel size comparison. Can it alone determine volume of airflow or HP?
 

Re-read that. You're expressing my point exactly. The compressor wheel could easily be out- matched my three turbine, and vice versa. My point is that there is about a good 30% differential of sizing between the composite and exhaust wheels. That's why I'm taking the OP you can't just compare one clause wheel with another but size and attempt to guess power potential without taking the turbine wheel into account.

Re: Compressor wheel size comparison. Can it alone determine volume of airflow or HP?
 

true, even if autocorrect typed more than you did haha.

Re: Compressor wheel size comparison. Can it alone determine volume of airflow or HP?
 

The compressor dimentions can give a rough estimate of air flow. Horsepower, no. Not without the turbine wheel specs.
Its like trying to quess cylinder volume by knowing only the piston size...
Compressor consumes energy. How much energy the turbo as a whole unit will require to move the asked amount of flow is turbine dependent.

A full T4 turbo with a P-TRIM turbine wheel and 50 trim compressor will destroy on peak engine power a turbo with T3 stage T3 turbine wheel and the same 50 trim compressor.
Even if the T3 stg3 turbine wheel is more than enough the P-TRIM will make more ENGINE power.
It can be technical AF analysis to be 100% correct but at the end, result is delta Pressure dependent.

Re: Compressor wheel size comparison. Can it alone determine volume of airflow or HP?
 

This is true. But displacement of the engine and its exhaust turbine energy determines whether or not a P-trim is desired to use. Sure, it makes more peak hp, than a stage 3, but the behavior of the turbo on the 1.5-2.0 litre engine suffers horrible for street use. This is why combinations exist.

There was one company that did aftermarket turbos and all of them used P- trims, regardless of compressor wheel size. About 10 years ago. Needless to say, they changed their business model after trying to sell to d-series people and nothing but lag and complaints resulted..

Re: Compressor wheel size comparison. Can it alone determine volume of airflow or HP?
 

Yeah of course p-trim 9out of 10 times is TOO MUCH . Thats another discussion :)

Re: Compressor wheel size comparison. Can it alone determine volume of airflow or HP?
 

Hello

I finally made time to make some pictures fron turbo number 1.

The wheel are a bit bigger then the turbo on my crx. The style of the turbo is the same but i will take that turbo also appart.


But for now its a .63 ar dividit turbine house allot bigger then what i on the crx got. Does some one knows what this turbo can do max hp?






https://cimg9.ibsrv.net/gimg/honda-t...ee1c010dfe.jpg
https://cimg0.ibsrv.net/gimg/honda-t...3a9ed1abc9.jpg
https://cimg1.ibsrv.net/gimg/honda-t...af9ab6b41c.jpg
https://cimg2.ibsrv.net/gimg/honda-t...6f0b668045.jpg

Re: Compressor wheel size comparison. Can it alone determine volume of airflow or HP?
 

Wow. Those numbers really are just outside of any reputable company's measurement's for a similar 50lbs/min turbocharger. They're using a turbine wheel which is actually larger than a P-trim, and still using a smaller compressor wheel inducer and larger compressor wheel exducer than anything from Garrett, Borg-Warner, or Turbonetics. So, it really goes back to what you were asking about almost a year ago. You've got major corrosion on the compressor wheel, which questions how long this wheel will last before destruction, but if you're asking if this will make 400whp-500whp, the answer is yes. If you're asking precisely at what boost pressure level that is required to do that, that can't be answered until you hit the dynamometer. If you're asking if this will be "laggy", that goes back to the amount of displacement and VE that the engine has. Anything that is under 1.8 litres in most Honda applications, yes, it will be laggy, and not behave very responsively.

So, there you have it. Although, I wouldn't re-install that based upon the condition of that compressor wheel. But as always, I wish you the best of luck.

Re: Compressor wheel size comparison. Can it alone determine volume of airflow or HP?
 

its got similar sized wheels to a hx35

Re: Compressor wheel size comparison. Can it alone determine volume of airflow or HP?
 

Just enough to not violate any patents, but the petitioners are a little different than the Holset HX35

Re: Compressor wheel size comparison. Can it alone determine volume of airflow or HP?
 

I got a b16. I have now a t3 t4 turbo ebay full boost at about 4000rpm.


What if i use a fast spoolvalve?

My goal is 650hp. What would you advice put it on and try it of it wont work buy another one or sell it and buy another one.

Re: Compressor wheel size comparison. Can it alone determine volume of airflow or HP?
 

A spool valve will not help you here. You must buy another turbocharger to even begun to reach 650whp, on such small displacement. Something at least about 60lbs/min+

Re: Compressor wheel size comparison. Can it alone determine volume of airflow or HP?
 

Ok wich one from the non brand would you advice me ebay/ali.? Maybe a link.

I know a brand one is better but it for me just for hobby i drive 4 weeks a year...

Re: Compressor wheel size comparison. Can it alone determine volume of airflow or HP?
 

Asking Shodan which Ebay/Alibaba turbo he recommends is like asking a catholic priest which brand of scotch whiskey they prefer.

Re: Compressor wheel size comparison. Can it alone determine volume of airflow or HP?
 

:lmao: