how do you convert cfm of a turbocharger to whp?

 

You convert from CFM to Lb/Min and then convert to whp. The general rule is that per 1 lb/min flow, it's approximately 10bhp. I used to know how to do it off the top of my head, but not anymore. Also, i'd search it for you, but I'm in class and somewhat trying to pay attention lol. This should at least give you a little better idea of how to start finding your answer.

 

say if a turbo flows 1000 cfm, how would i calculate that in lb/min?

 

searching is a crazy thing..
this might help
#2
https://honda-tech.com/forums/forced-induction-16/how-read-compressor-map-142398/

 

CFM /14.2 = Lbs/min.

Lbs/min *60/12.5/0.5 = Flywheel HP (generally)

 

Multiply cfm by (0.070318) and that will get you lb/min.

*This assumes 112 deg F and sea level.

I have seen people use from .069 to .072 The diff really isn't THAT big a deal for what you are doing.......

 

so i get 70lb/min with my calculation. so it could make alittle over 700whp?

 

Whenever you can listen to this guy ^^^^

He knows a whole lot more than most of us will ever care to know about turbos.

According to his calc the answer is ~676 fwhp. Remember that is not wheel hp. I forget what most people use but it isn't uncommon to lose ~13-15% through the drivetrain. This will vary depending on your tranny and axels. That would net you roughly 588-574whp.

As LSV stated though, a search and a bit of reading will do you worlds of good. Then you will understand what the numbers mean instead of just getting us to crunch numbers for you. GL.

 

well i did get 676whp, i just rounded up

 

how many cfm's do gt4294 flow?

 

Sigh, once again that number is FLYWHEEL hp. That is not whp. Re-read what I wrote and it would behoove you to take a look at that link that LSV put up and study it.