Why doesn't Garrett or Borg make these for tuner applications?
#103
Wastegates do under normal circumstances. In this case we have significant load on the compressor causing airflow through it to slow, thus skyrocketing the AoA on the compressor blades causing a surge/stall. Sav is suggesting that venting the pressure in the line would cause the compressor blades to accelerate since they would have a decreasing load. Kind of like accelerating your car then pressing the clutch in with the accelerator still floored.
Sav, I know the applications are apples to oranges, but in aviation we have relief valves that allow the intake charge to speed up, it has little effect on the speed of N1 (the blades) as they are maintaining rpm because they are being driven, though they are wanting to slow down due to the reversion. Allowing the intake to pass evens it out.
I'm not convinced this would create an overspeed.
Sav, I know the applications are apples to oranges, but in aviation we have relief valves that allow the intake charge to speed up, it has little effect on the speed of N1 (the blades) as they are maintaining rpm because they are being driven, though they are wanting to slow down due to the reversion. Allowing the intake to pass evens it out.
I'm not convinced this would create an overspeed.
Last edited by tasty danish; 04-07-2012 at 12:30 AM.
#106
bottom line: on our poorly flowing low displacement motors there isn't much you'd be able to do with 25psi out of a 600whp turbo at 2500 rpm.
So no matter how much the kiddies have wet dreams about "OMG SPOOL AT 1500 AND BOOST EVERYWHERE, it simply defies physics.
You want spool at 1500 get a 10L+ diesel.
You want power at redline get a honda.
You want a watered down compromise of both, get a miata
/thread
So no matter how much the kiddies have wet dreams about "OMG SPOOL AT 1500 AND BOOST EVERYWHERE, it simply defies physics.
You want spool at 1500 get a 10L+ diesel.
You want power at redline get a honda.
You want a watered down compromise of both, get a miata
/thread
#107
Ha, ok for some reason I was thinking the the VGT was on the compressor side.....my mistake. But, why dont they do the VGT on the intake and exhaust sides? I know that would make it even more complex but at the same time make it that much better if operating properly.
Hmmm....actually I dont even know if it would help much if any at all. Thoughts?
Hmmm....actually I dont even know if it would help much if any at all. Thoughts?
#112
The vanes dont work this way... That's why the they are not on the compressor. They direct the air flow at an angle, that's all they do. The closer to a right angle they are, the more the turbine is pushed, the more rpm can be achieved (with the amount of exhaust gas). That wouldn't do ---- but block flow on the compressor side.
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