Gotham Racing Turbo Kit Dyno #'s
05-07-2004, 11:57 AM
#11
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Originally Posted by pluto' date='May 7 2004, 08:55 AM
I was pretty happy that the car made 474rwhp at 19.5psi of boost. We stopped because we were seeing 97% duty cycle on 550cc pri and 1600cc sec. I think the fuel pump is maxed out.
05-07-2004, 05:41 PM
#14
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Join Date: Jul 2001
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Originally Posted by pluto' date='May 7 2004, 10:57 PM
I think it could make 500rwhp but the restriction will be the dp since I estimated that the 3" dp is only good for around 500rwhp. The only way to gain more is to put a 3.5" exhaust system. 550-600rwhp is durable with a larger turbo. Honestly, the turbo has to size properly for the supported power but manifold is the key in making good hp as well. I made try to put a plain GT4082 turbo in our manifold and see what dyno #'s we can get out of it.
Edit: Gee, you could have made over 17% more RWHP if you would have put it on a Mustang Dyno and used the locally established correction factors.
05-07-2004, 06:19 PM
#16
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we only made 2 manifold for the stage 2. One for this customer and the other is in my red car. My red car has the thumper T88 in it. I guess I can take pics of it in the car?? As far as the design goes, it uses dual tial 38mm wastegate vent to atmosphere and individual runners going into a divided turbine housing. The turbo isn't any special. It's a standard off the shelf T66 that we put in for testing. I have a turbo that I plan to use which should spool a little faster but we couldn't get it in time for his car. Other than that, I think that's about it.
05-08-2004, 11:43 AM
#19
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Join Date: Nov 2003
Posts: 4
Originally Posted by Badog' date='May 7 2004, 02:41 PM
Got any pics of the manifold or can you describe what makes it unique without exposing "sensitive" design data? Equal length, short runner, capacity for a flanged wastegate (ala recent Ecotec race built motor/turbo combos), etc? Thanks Steve.
Edit: Gee, you could have made over 17% more RWHP if you would have put it on a Mustang Dyno and used the locally established correction factors.
Edit: Gee, you could have made over 17% more RWHP if you would have put it on a Mustang Dyno and used the locally established correction factors.
05-08-2004, 11:58 AM
#20
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Join Date: Dec 2001
Posts: 98
Originally Posted by Badog' date='May 7 2004, 02:41 PM
Got any pics of the manifold or can you describe what makes it unique without exposing "sensitive" design data? Equal length, short runner, capacity for a flanged wastegate (ala recent Ecotec race built motor/turbo combos), etc? Thanks Steve.
Edit: Gee, you could have made over 17% more RWHP if you would have put it on a Mustang Dyno and used the locally established correction factors.
Edit: Gee, you could have made over 17% more RWHP if you would have put it on a Mustang Dyno and used the locally established correction factors.
Also, on a side note, you can estimate how much boost the person is running based on the torque it generates. If someone posted a dyno sheet that makes 400rwtq and says they're only running 14psi, you can tell right away that they're lying since it takes approximately 22psi to make 400rwtq.
8-10psi is generally around 250-270rwtq
12psi is generally around 290rwtq
15psi is generally around 320rwtq
17psi is generally around 330-350rwtq
20psi is generally around 370-380rwtq