[ChinaSpec]

Hello, I'm from Ukraine in Europe, and immediately ask for forgiveness for my English).
Planned hp goal of the car 450-500 hp (1.5L 4 cylinder 8500-9000 rpm). For all this, how would it not be foolish, want to get fastest as possible response.
Reviewed a lot of turbochargers, and chose the:
CUSTOM T3 TURBO WITH 60 SERIES COMPRESSOR
or
CUSTOM T3 TURBO WITH T4 B/E COMPRESSOR
Standart bearing, water cooled
Compressor Wheel:
HPC-64 Billet
Turbine Wheel:
F1-49 or F1-54
Turbine Housing A / R:
0.36
It is planned to boost 2.5 bar (36-37 psi), and maybe even 3 bar (43 psi). Calculation formulas (from the Turbonetics catalog) show that the Corrected Mass Air Flow will be approximately 49-57 Lb/Min for 2.5-3 bar (36-43 psi) of boost. Common sense dictates that such a huge amount of exhaust gas will be too large for such a small turbine. What if you use it with 60mm wastegate, or with two 60mm wastegate? Will it work properly?

OR

If we consider the situation from the other side:
1.5L 8500-9000 rpm engine. Does not matter how much power this engine can produce.
Need a turbocharger that can make 2.5-3 bar (36-43 psi) of boost with fastest possible response.
We looking for journal bearing turbocharger because they are cheaper and less demanding of oil, although they slower response compared to the ball bearing.

What advice do you have?

[Robert]

Originally Posted by ChinaSpec

Hello, I'm from Ukraine in Europe, and immediately ask for forgiveness for my English).
Planned hp goal of the car 450-500 hp (1.5L 4 cylinder 8500-9000 rpm). For all this, how would it not be foolish, want to get fastest as possible response.
Reviewed a lot of turbochargers, and chose the:
CUSTOM T3 TURBO WITH 60 SERIES COMPRESSOR
or
CUSTOM T3 TURBO WITH T4 B/E COMPRESSOR
Standart bearing, water cooled
Compressor Wheel:
HPC-64 Billet
Turbine Wheel:
F1-49 or F1-54
Turbine Housing A / R:
0.36
It is planned to boost 2.5 bar (36-37 psi), and maybe even 3 bar (43 psi). Calculation formulas (from the Turbonetics catalog) show that the Corrected Mass Air Flow will be approximately 49-57 Lb/Min for 2.5-3 bar (36-43 psi) of boost. Common sense dictates that such a huge amount of exhaust gas will be too large for such a small turbine. What if you use it with 60mm wastegate, or with two 60mm wastegate? Will it work properly?

OR

If we consider the situation from the other side:
1.5L 8500-9000 rpm engine. Does not matter how much power this engine can produce.
Need a turbocharger that can make 2.5-3 bar (36-43 psi) of boost with fastest possible response.
We looking for journal bearing turbocharger because they are cheaper and less demanding of oil, although they slower response compared to the ball bearing.

What advice do you have?

Well its certainly possible to make that much power from the larger units (60 series or 64mm billet wheel). the T04E might be stretched to flow enough to make the power you want. Is this going to be an all out drag car?

[ChinaSpec]

Hi Robert!
This is a "street class" car using for everyday driving. But, the main task of this car is make 450-500 HP (it is not so important, how many HP it can make), i want to make 3 bar (43 psi) of boost at redline of 9000 rpm. Since the car is used for everyday driving, i want to completely adapt it for daily driving in urban environments, also use it in "street class" in drag racing. Primary target is a drag. Thanks for attention!

[ChinaSpec]

Maybe someone use such or analog turbocharger on their 1.4-1.6 L engine? Share your experiences please. I would appreciate your feedback!

[Robert]

Originally Posted by ChinaSpec

Maybe someone use such or analog turbocharger on their 1.4-1.6 L engine? Share your experiences please. I would appreciate your feedback!

You really want to make 43 psi of boost or does that include atmospheric? What pressure ratio do you intend to run daily?

Sent while on the go

[ChinaSpec]

I am want to do 43 psi of boost pressure (of an absolute total 58 psi, including 14.5 psi of athmosphere pressure) for a drag race. But for a daily driving will use 8-16 psi of boost (boost controller + soft spring wastegate).
Using a large turbine, capable to do 43 psi of boost, is not very nice to use the car in daily driving, as there will be a big lag turbine.
By this i plan to use a large compressor that can do 43 psi of boost. And the smallest turbine for a comfortable daily ride.
I understand the consequences of that choice, at least a strong slippage of the wheels, compressor surge, overheating and more... Since the amount of air coming from a big compressor is too large for a small turbine. That's why i want to use the largest wastegate for efficient removal of excessive amounts of exhaust from the turbine.
I also think that i will use two wastegate. Both large or one large and one smaller. Maybe one with a soft spring to work at low pressure, and the other with a stiff spring, which helps to small in high boost pressure.
Perhaps such a system has the right to "life"?
I guess this never been done, maybe I'll "discoverer" ).
Maybe someone will be any thoughts on this subject, i will be glad to your comments yet, and thank you for your attention, and sorry for my english!

[Robert]

Originally Posted by ChinaSpec

I am want to do 43 psi of boost pressure (of an absolute total 58 psi, including 14.5 psi of athmosphere pressure) for a drag race. But for a daily driving will use 8-16 psi of boost (boost controller + soft spring wastegate).
Using a large turbine, capable to do 43 psi of boost, is not very nice to use the car in daily driving, as there will be a big lag turbine.
By this i plan to use a large compressor that can do 43 psi of boost. And the smallest turbine for a comfortable daily ride.
I understand the consequences of that choice, at least a strong slippage of the wheels, compressor surge, overheating and more... Since the amount of air coming from a big compressor is too large for a small turbine. That's why i want to use the largest wastegate for efficient removal of excessive amounts of exhaust from the turbine.
I also think that i will use two wastegate. Both large or one large and one smaller. Maybe one with a soft spring to work at low pressure, and the other with a stiff spring, which helps to small in high boost pressure.
Perhaps such a system has the right to "life"?
I guess this never been done, maybe I'll "discoverer" ).
Maybe someone will be any thoughts on this subject, i will be glad to your comments yet, and thank you for your attention, and sorry for my english!

It has been done before but the results typically aren't positive. In order to run a compressor wheel and turbine capable of making that pressure ratio you have to usually go really large so when you aren't on the track the compressor surges all over the place because its too large for the daily driven application.

[ChinaSpec]

Immediately i'm sorry, do not consider for advertising. But maybe something like Synchronic Blow-Off Valve could help? Or maybe something other way, without changing turbine A/R, wheel can help to eliminate compressor surge (long [or very long] exhaust manifold; two blow-off valves, one at the compressor and one before the throttle body, after intercooler)?

[Robert]

Originally Posted by ChinaSpec

Immediately i'm sorry, do not consider for advertising. But maybe something like Synchronic Blow-Off Valve could help? Or maybe something other way, without changing turbine A/R, wheel can help to eliminate compressor surge (long [or very long] exhaust manifold; two blow-off valves, one at the compressor and one before the throttle body, after intercooler)?

The surge is not because the blow valve is too small its because the compressor isn't being spun fast enough at low power levels. It means you are left of the surge line

Sent while on the go

[ChinaSpec]

Originally Posted by Robert

The surge is not because the blow valve is too small its because the compressor isn't being spun fast enough at low power levels. It means you are left of the surge line

Sent while on the go

If i understand you correctly, the reason for this is too large compressor wheel? Perhaps you could recommend another wheel that can satisfy my needs?