My dyno chart from this weekend.
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My dyno chart from this weekend.
For everyone who hasnt seen it in the single turbo section.
Heres the specs of the run.
-15psi
-94 octane pump fuel
-8.5:1 rotors
-TO4B 60-1, P trim, 0.84 tang exhaust housing
-85deg and almost %100 humidity (very hot out!)
Overall im pretty please with the 405hp but was disapointed with the torque. Im thinking it had alot to do with the weather. Let me know what you think.
Thanks,
Brian
Heres the specs of the run.
-15psi
-94 octane pump fuel
-8.5:1 rotors
-TO4B 60-1, P trim, 0.84 tang exhaust housing
-85deg and almost %100 humidity (very hot out!)
Overall im pretty please with the 405hp but was disapointed with the torque. Im thinking it had alot to do with the weather. Let me know what you think.
Thanks,
Brian
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Originally posted by BLUE TII
Awsome HP!
Is that corrected for a turbo? If not, yes that weather would have quite an affect (standard correction is for NA and weather affects them MUCH less).
Nice #s, Ian
Glad it never gets over 65 deg here...
Awsome HP!
Is that corrected for a turbo? If not, yes that weather would have quite an affect (standard correction is for NA and weather affects them MUCH less).
Nice #s, Ian
Glad it never gets over 65 deg here...
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Originally posted by Project84
Any idea what the rear wheel HP and Tq is? It says flywheel graph at the very top in small print.
Any idea what the rear wheel HP and Tq is? It says flywheel graph at the very top in small print.
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Originally posted by Ryde _Or_Die
Is that as high as your going to go? I'd love to see it turned up to like 20psi
Is that as high as your going to go? I'd love to see it turned up to like 20psi
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Originally posted by fastrotaries
was the turbo chocking up top, hence the large margin between the two. I don't know the specs, so i'm just guessing.
was the turbo chocking up top, hence the large margin between the two. I don't know the specs, so i'm just guessing.
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I fear your turbo lag, as your setup is a lot like mine :P
Great HP, but what's up with the Torque? Even with the weather I would have expected ~315ish, at least that high up in the revs.
Have you thought about going to maybe 8500 rpm? It doesn't look like your power is dropping off at all. The torque peaks at ~7000 or 7500, but since your torque figures are kinda out of wack to begin with for whatever reason, they may peak a little higher, too.
Check your PMs a little later tonight, too. I've got some questions for you.
Great HP, but what's up with the Torque? Even with the weather I would have expected ~315ish, at least that high up in the revs.
Have you thought about going to maybe 8500 rpm? It doesn't look like your power is dropping off at all. The torque peaks at ~7000 or 7500, but since your torque figures are kinda out of wack to begin with for whatever reason, they may peak a little higher, too.
Check your PMs a little later tonight, too. I've got some questions for you.
#21
BDC Motorsports
Originally posted by 1FastT2
No, I have a pretty big street port.
No, I have a pretty big street port.
Good horsepower; the torque is shy about 50ft/lbs of where it should be.
B
#22
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How big are the exhaust ports?  If the exhaust port has been moved extensively up or down, this'll kill torque.  Early exit of the exhaust gases decreases the time the combustion charge can "work" on the "crank" (or e-shaft) - very early opening of the exhaust port causes drastic drops in torque.
For example, I run a very early opening exhaust port (almost 1" lower than stock), which killed my torque numbers.  My car dyno'd 253.9hp at the wheels, but only making 207lb-ft of torque on that particular run.  I run these very large exhaust ports for top end power only.  For a broader power band (i.e. keep torque high), I wouldn't port the exhuast port as heavily...
-Ted
For example, I run a very early opening exhaust port (almost 1" lower than stock), which killed my torque numbers.  My car dyno'd 253.9hp at the wheels, but only making 207lb-ft of torque on that particular run.  I run these very large exhaust ports for top end power only.  For a broader power band (i.e. keep torque high), I wouldn't port the exhuast port as heavily...
-Ted
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Originally posted by RETed
How big are the exhaust ports?  If the exhaust port has been moved extensively up or down, this'll kill torque.  Early exit of the exhaust gases decreases the time the combustion charge can "work" on the "crank" (or e-shaft) - very early opening of the exhaust port causes drastic drops in torque.
For example, I run a very early opening exhaust port (almost 1" lower than stock), which killed my torque numbers.  My car dyno'd 253.9hp at the wheels, but only making 207lb-ft of torque on that particular run.  I run these very large exhaust ports for top end power only.  For a broader power band (i.e. keep torque high), I wouldn't port the exhuast port as heavily...
-Ted
How big are the exhaust ports?  If the exhaust port has been moved extensively up or down, this'll kill torque.  Early exit of the exhaust gases decreases the time the combustion charge can "work" on the "crank" (or e-shaft) - very early opening of the exhaust port causes drastic drops in torque.
For example, I run a very early opening exhaust port (almost 1" lower than stock), which killed my torque numbers.  My car dyno'd 253.9hp at the wheels, but only making 207lb-ft of torque on that particular run.  I run these very large exhaust ports for top end power only.  For a broader power band (i.e. keep torque high), I wouldn't port the exhuast port as heavily...
-Ted