What HP at what PSI?
#61
This doesnt work. Different turbos flow different amounts at different pressure ratios.
On sunday I went to the dyno with Ed. He has a gt2871. I have a td04-15g. I made like 160ft/lbs at 8psi. He made like 200 something.
You can look at compressor maps. Calculate the pressure ratio and see what the compressor flows at that ratio. It isn't exact but it gives you an idea.
On sunday I went to the dyno with Ed. He has a gt2871. I have a td04-15g. I made like 160ft/lbs at 8psi. He made like 200 something.
You can look at compressor maps. Calculate the pressure ratio and see what the compressor flows at that ratio. It isn't exact but it gives you an idea.
#67
Even the same car, same boost, same setup, makes drastically different power/torque with different ignition timing. I'll be running 16psi at 7000rpm from a c30-94 rotrex... are you saying I'll make 350whp regardless of my ignition timing, fueling, altitude? That doesn't seem right. Not trying to argue, just curious.
Thanks
#68
SadFab CEO
iTrader: (3)
Join Date: Sep 2012
Location: your mom's house phoenix, AZ
Posts: 4,560
Total Cats: 1,142
What HP at what PSI?
Can you explain this further? Or were you just joking.
Even the same car, same boost, same setup, makes drastically different power/torque with different ignition timing. I'll be running 16psi at 7000rpm from a c30-94 rotrex... are you saying I'll make 350whp regardless of my ignition timing, fueling, altitude? That doesn't seem right. Not trying to argue, just curious.
Thanks
Even the same car, same boost, same setup, makes drastically different power/torque with different ignition timing. I'll be running 16psi at 7000rpm from a c30-94 rotrex... are you saying I'll make 350whp regardless of my ignition timing, fueling, altitude? That doesn't seem right. Not trying to argue, just curious.
Thanks
#69
SADFab Destructive Testing Engineer
iTrader: (5)
Join Date: Apr 2014
Location: Beaverton, USA
Posts: 18,642
Total Cats: 1,866
I think that's mostly due to the compressor efficiency which will affect temperature out which was assumed constant in the super ghetto PR * NA HP equation. Just use that to get a ball park idea of HP per Psi but compressor maps are the way to go but it sounded like reading compressor maps were beyond the scope of the OP.
Thread
Thread Starter
Forum
Replies
Last Post