odd idea
05-30-2004, 02:39 PM
#14
0.0 BAR
Join Date: Jun 2003
Posts: 0
Re:odd idea
Originally Posted by street_kings
No. Turbo's spool off of mostly HEAT energy. Thats why when you wrap you manifold, you get quicker spool times (hotter exhaust gas spooling turbo)
Woah, this statement is 100% wrong for soo many reasons. I don't feel like explaining the laws of thermodynamics but heat is a VERY disorganized form of work. Its the mass flow rate of the gas that spins the turbine.
Just think about it, what would spin a fan easier; putting a heater on it or spraying a garden hose at it?
Originally Posted by quadnie
The concept is there.. what leth wants to do is make the turbo as cool as possible so the endothermic reactions of the air becoming dense happens a little bit smoother.
The condensing of air is an exothermic reaction. Heat is produced when air becomes compressed
05-30-2004, 03:49 PM
#15
Guest
Posts: n/a
Re:odd idea
thats what I was thinking. I figured compressed air would spin the exaust side more effeciently than hot air would it would keep the turbo cooler running smoother it seems like it might have some plumbing problems. but once again it was just an idea. i wanted to see what people thought of it and if any one has ever tryed it
05-30-2004, 07:21 PM
#17
1.5 BAR
Join Date: Aug 2003
Posts: 1,194
Re:odd idea
Meh, high performance diesels have a much more interesting setup 
Two turbos, one pounds a mild boost at the compressor inlet of the other one (15psi or so) and then that compressor brings things up. Boost levels possible with this setup are over 100psi, and that's fine since diesels have no detonation.
Two turbos, one pounds a mild boost at the compressor inlet of the other one (15psi or so) and then that compressor brings things up. Boost levels possible with this setup are over 100psi, and that's fine since diesels have no detonation.
05-31-2004, 08:59 PM
#19
1.0 BAR
Join Date: Jan 2003
Posts: 494
Re:odd idea
Allright. Here's why it wouldn't be worth your trouble:
Generally, the pressure inside the exhaust manifold on a turbocharged car is 2 to 3 times the boost pressure. That means that at 7 PSI of boost, you're running between 14 and 21 PSI of exhaust manifold pressure.
If you relate that to one turbo's boost pressure spooling the other turbo, you'd need between 14 and 21 PSI of boost from the first turbocharger to spool the second turbo to 7 PSI, and your exhaust manifold pressure would be something like 40 or 50 PSI.
Needless to say, your valves would probably be fucked, and at the end of the day, you're taking the long way to home sweet home, 7 PSI of boost.
Generally, the pressure inside the exhaust manifold on a turbocharged car is 2 to 3 times the boost pressure. That means that at 7 PSI of boost, you're running between 14 and 21 PSI of exhaust manifold pressure.
If you relate that to one turbo's boost pressure spooling the other turbo, you'd need between 14 and 21 PSI of boost from the first turbocharger to spool the second turbo to 7 PSI, and your exhaust manifold pressure would be something like 40 or 50 PSI.
Needless to say, your valves would probably be fucked, and at the end of the day, you're taking the long way to home sweet home, 7 PSI of boost.
05-31-2004, 09:07 PM
#20
1.0 BAR
Join Date: Jan 2004
Posts: 404
Re:odd idea
I think that this would work, the air coming from the compressor housing has to be moving quicker than that coming straight off the exhaust manifold. Run one turbo in a stock like way, then dump the compressor straight to another exhaust housing, then run normal setup there after.
You could use this setup in a few ways, u could use a small t25 or something to spool a larger turbo such as a sc61 on a dseries, seeing as house (theoretically) if the t25 spools at 2500 rpms, the sc61 should spool shortly after, making spool times quicker than if you were just running a straight sc61 off the manifold of a dseries.
im done with the mindless rambling.
You could use this setup in a few ways, u could use a small t25 or something to spool a larger turbo such as a sc61 on a dseries, seeing as house (theoretically) if the t25 spools at 2500 rpms, the sc61 should spool shortly after, making spool times quicker than if you were just running a straight sc61 off the manifold of a dseries.
im done with the mindless rambling.
