Custom turbo
Custom turbo
The twin scroll s200 with a quick spool valve is a good idea. I've been planning on the twin scroll EFR 7064 setup which is similar size and thought about fitting a quick spool valve into my manifold. Would be cool, but I haven't figured out a good way to fit it in there. Without a VNT or quick spool, the turbine wheel on the s200 is too big to spool well. Thats why I was looking at the EFR 7064.
5psi right off idle is asking a lot out of a single turbo setup with compressor that can push 40psi at 5000rpm. If by 5psi "literally right off idle" you mean ~1000rpm, then I can tell you that its not going to happen with a 55lb/min compressor. Quick spool, VNT, electric motor spinning it wont matter. The flow is below where the compressor can work. It doesn't matter what you do to the turbine side. A 55lb compressor isn't going to act like a 20lb compressor. Even A GT2056 VNT turbo probably wouldn't hit 5psi that quick.
~1500rpm is just barely on the bottom corner of the compressor map at 1500rpm & 6psi, but its doubtful you would actually be able to hit that with the quick spool valve or VNT turbine housing.
A small S200 VNT is exactly what I would like as well. DPS makes VNT housing for the S300, but unfortunately not the S200. I've emailed them about it but obviously they market to diesels twice the size. Maybe if enough people ask about an S200 VNT they would make one. With a VNT S200, you might be able to hit 35psi by ~2200rpm and likely bend something with 500+ lb-ft of torque. It wont hit 5psi off idle though.
The twin scroll s200 with a quick spool valve is a good idea. I've been planning on the twin scroll EFR 7064 setup which is similar size and thought about fitting a quick spool valve into my manifold. Would be cool, but I haven't figured out a good way to fit it in there. Without a VNT or quick spool, the turbine wheel on the s200 is too big to spool well. Thats why I was looking at the EFR 7064.
5psi right off idle is asking a lot out of a single turbo setup with compressor that can push 40psi at 5000rpm. If by 5psi "literally right off idle" you mean ~1000rpm, then I can tell you that its not going to happen with a 55lb/min compressor. Quick spool, VNT, electric motor spinning it wont matter. The flow is below where the compressor can work. It doesn't matter what you do to the turbine side. A 55lb compressor isn't going to act like a 20lb compressor. Even A GT2056 VNT turbo probably wouldn't hit 5psi that quick.
~1500rpm is just barely on the bottom corner of the compressor map at 1500rpm & 6psi, but its doubtful you would actually be able to hit that with the quick spool valve or VNT turbine housing.
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