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Old 04-22-2012, 10:05 PM   #1
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Default How to estimate max horsepower by measuring an unknown turbo.

Hey guys,

Is there any general rules for estimating a turbochargers maximum horsepower output or airflow capacity if you just cant find the specs?

I have a turbocharger that Id like to build something silly with, and want to make 100% sure its not going to be just that little bit too small to actually work.

Of course Im prepared to measure everything.

Dann
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Old 04-22-2012, 10:09 PM   #2
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Not accurately. You need the compressor map if you want to be within 100whp with any confidence.
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Old 04-23-2012, 12:04 AM   #3
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Its tiny, so it would be hard to be off by 50 hp haha.

Its an air research T0212.

Ill try garretts website for a compressor map.

Dann
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Old 04-23-2012, 12:43 AM   #4
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Cant find it.

Can I compare other turbochargers with very similar specs?

or will the design of the wheel throw it off by too much?

Dann
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Old 04-23-2012, 12:45 AM   #5
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Measure wheels. That will get u ballpark. Or post a pic. Youcan tell generalllll hp capability by turbo sizw. Genrally
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Old 04-23-2012, 01:01 AM   #6
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I dont have a big enough pair of circlip pliers here so ill repost here with wheel sizes in a couple days.

Dann
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Old 04-23-2012, 01:03 AM   #7
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Just neasure inducer n exducer son
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Old 04-23-2012, 01:51 AM   #8
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If you know the Max cfm flow that's a good guess at crank hp.
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Old 04-23-2012, 04:29 AM   #9
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I know that, what I dont know is enough about it other than the stock car it came from was able to make 140-150 with it maxxed.

But that was a single cam 1.5L.

I cant measure the exducer on either wheel without removing the housings, which I need circlip pliers for.

Dann
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Old 04-23-2012, 10:30 AM   #10
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I hope your planning to put this on a scooter....
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Old 04-23-2012, 10:48 AM   #11
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Nope.

Silly little 1.6 project.

Dann
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Old 04-23-2012, 11:06 AM   #12
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Quote:
Originally Posted by nitrodann View Post
I know that, what I dont know is enough about it other than the stock car it came from was able to make 140-150 with it maxxed.

But that was a single cam 1.5L.

I cant measure the exducer on either wheel without removing the housings, which I need circlip pliers for.

Dann

Measure the INDUCER on the compressor and EXDUCER on turbine
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Old 04-23-2012, 11:13 AM   #13
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just those 2?

Dann
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Old 04-23-2012, 11:20 AM   #14
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On a quick eyeball with a tape measure Im going with 32mm on the compressor side and 34mm on the exhaust.

Dann
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Old 04-23-2012, 12:02 PM   #15
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180whp max is my guess.
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