Why Supercharged Instead of Turbo?

[DJCarbine]

Originally Posted by CSG Mike

Just for shits and giggles, I recommend you go test drive a 2015/2016 WRX. You'd be impressed with the new engine.

I really should, the Ej205 is an archaic pig compared to modern engines

[WHITE]

Originally Posted by DJCarbine

I really should, the Ej205 is an archaic pig compared to modern engines

2015/2016 wrx is an fa20di-t. Unless you already knew that and were making a remark about how the new wrx engine is better then the ej205, in wich case disregard my post.

[wbradley]

For aftermarket:
Simplicity.
Less potential for failure with less parts.
Less potential heat issues.
Centrifugal system, a good design has very low parisitic loss.
" " , gentler onset of extra torque easier on driveline
" " , doesnt drastically change the personality of the engine

On the other hand, I prefer turbo if it is factory equipped as the details are most likely ironed out for dependability, eg: I have a 2015 WRX

[DJCarbine]

Originally Posted by WHITE

2015/2016 wrx is an fa20di-t. Unless you already knew that and were making a remark about how the new wrx engine is better then the ej205, in wich case disregard my post.

I was referring to the engine in my 2005 wagon, it's all good

[Jonsey]

Originally Posted by LucidMomentum

Well it recharges the battery after every pull, so you get 90 seconds of 5 PSi of boost and then 20-30 seconds of recharge time.

If you use the Procede controller, it's always on. More like having a beefier engine.

It is not intended to be run on a track. It is not designed to handle the duty cycles it would see on a track and you are typically on gas too often on the track for it to recharge. I was on the waiting list and spoke to Rob and Fenton both about tracking it, as that was the primary use of the car by the time I had the opportunity to buy. After speaking with them, I passed and will go the JRSC route in time.

[AVOturboworld]

Originally Posted by wparsons

What turbo were you running, and how much boost? What I don't like about a turbo mid corner is that at part throttle power delivery isn't always predictable depending on load, etc.

That usually happens when too large of a turbo is run. We've done extensive tracking (in several countries!), and mid-corner control is not an issue, because the turbo is spooling from 2000rpm onwards, not 4000+ onwards.

A proper turbo setup works great at the track, just as a proper sc setup would. But it's always easy to pick out examples of each that don't.

[wparsons]

I wish someone made a GT25x based kit (or similar sized EFR turbo). I don't want 350+whp, and don't want that much headroom just adding lag. No e85 up here, and no interest in a lower compression block. A solid 260-270whp would be perfect, and for off the shelf solutions the supercharger kits are the best option.

[King Tut]

Originally Posted by wparsons

What turbo were you running, and how much boost? What I don't like about a turbo mid corner is that at part throttle power delivery isn't always predictable depending on load, etc.

I'm running a GTX3076R on my S2000. Boost was as high as 10 psi during the weekend.

[Sportsguy83]

Originally Posted by wparsons

I wish someone made a GT25x based kit (or similar sized EFR turbo). I don't want 350+whp, and don't want that much headroom just adding lag. No e85 up here, and no interest in a lower compression block. A solid 260-270whp would be perfect, and for off the shelf solutions the supercharger kits are the best option.

I'm pretty sure you can get full blown or any of the reputable shops to make you a kit based on it even a local good reputable shop.

[glamcem]

like others mentioned transient response (this may be very critical at the track and mimic lift-off oversteer) ..also there are so many different variations of each options (turbo vs SC), positive displacement, centrifugal type, journal bearing, ball bearing, single vs twin scroll ..list goes on.. each has their pros and cons so one size doesn't fit all

if you're ultimate goal is to make big hp then turbo it is, never really understood why people choose this platform to begin with, if that's what they're after though

[wparsons]

Originally Posted by Sportsguy83

I'm pretty sure you can get full blown or any of the reputable shops to make you a kit based on it even a local good reputable shop.

I also want uber short charge pipes, and an IC core sized to my hp goals.

Basically all custom minus maybe the manifold if the flange is compatible with the turbo I would end up picking.

In all honesty, if the Greddy kit was available with a more modern (and smaller) turbo it would be pretty damn close.

[King Tut]

Originally Posted by wparsons

I also want uber short charge pipes, and an IC core sized to my hp goals.

Basically all custom minus maybe the manifold if the flange is compatible with the turbo I would end up picking.

In all honesty, if the Greddy kit was available with a more modern (and smaller) turbo it would be pretty damn close.

It sounds like you have a great plan. As long as those lower HP numbers meet your goal, then I would just buy a Greddy kit. I am sure there is a way to get a GT25 on that kit. The only reason I didn't go with the Greddy kit on my S2k is that I knew I would want more HP on the street than it could provide, but it would have supplied the perfect setup for the track.

[Yoda]

Originally Posted by wparsons

I also want uber short charge pipes, and an IC core sized to my hp goals.

Basically all custom minus maybe the manifold if the flange is compatible with the turbo I would end up picking.

In all honesty, if the Greddy kit was available with a more modern (and smaller) turbo it would be pretty damn close.

Why not just go custom? Have a good local shop build the kit to your specifications. I have put together my own custom kit before and its not really that hard and lots of fun to do.

[wparsons]

Originally Posted by Yoda

Why not just go custom? Have a good local shop build the kit to your specifications. I have put together my own custom kit before and its not really that hard and lots of fun to do.

Cost, plain and simple. It'll be way more expensive to get a custom kit fabbed up than to just buy the JRSC kit that gives me the same hp I want.