quick question please help
Thread Starter
TECH Regular
Joined: Jun 2009
Posts: 448
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From: new york
quick question please help friend is selling a garret gtx4294r turbo ,
turbine is a 82mm with a 1.01 t4 divided housing
compressor is a 94 mm exducer w/56 trim "70.3 inducer" w/ .60 a/r
would this supply a 383 s.r ????
turbine is a 82mm with a 1.01 t4 divided housing
compressor is a 94 mm exducer w/56 trim "70.3 inducer" w/ .60 a/r
would this supply a 383 s.r ????
TECH Fanatic
Joined: Sep 2010
Posts: 1,037
Likes: 2
Well here do the Math.
CI x RPM x .5 x VE / 1768
So
383 x 7200 x .5 x 85% / 1768 = 662cfm
Now take the CFM and times it by the Pressure Ratio.
Pressure Ratio = PSI + 14.7 / 14.7
So 10 + 14.7 / 14.7 = 1.68
So 662 x 1.68 = 1112cfm.
Convert CFM to lbs/min
1112 * .0691 = 77lbs/min.
Looking at the compressor map. Not for 10 psi. It will not be efficient.
15 psi it won't be either its off the map.
They would work for a twin turbo setup.
CI x RPM x .5 x VE / 1768
So
383 x 7200 x .5 x 85% / 1768 = 662cfm
Now take the CFM and times it by the Pressure Ratio.
Pressure Ratio = PSI + 14.7 / 14.7
So 10 + 14.7 / 14.7 = 1.68
So 662 x 1.68 = 1112cfm.
Convert CFM to lbs/min
1112 * .0691 = 77lbs/min.
Looking at the compressor map. Not for 10 psi. It will not be efficient.
15 psi it won't be either its off the map.
They would work for a twin turbo setup.
Last edited by F0x Slaughter; Apr 24, 2012 at 09:56 PM.
