Innovate Motorsports Twin Screw Supercharger Kit for FR-S/BRZ

[flatline]

Originally Posted by sw20kosh

Just curious. Why are you restricting yourself from the posibility of ever taking it to a race track to truely experience the performance of this car. I am not saying you HAVE to but I see a lot of people who have this attitude that "there is just NO WAY i will ever do that".

I can say that when I first took a road car out on the track my eyes were truely opened. It was an experience like no other and I was hooked instantly. It is such an awesome experience you will never want to drive silly/fast/crazy on the streets becuase it just can't even come close to comparing.

HPDE also teaches you about car control and stability.

If I were going to 'track' it, it would most likely be auto-x. As RedLeader said, that application also seems like it would benefit most from power available immediately, as opposed to running it up to the redline.

And yes, gem, on a daily basis I rarely exceed 5k rpm. I have a short commute to work (6mi of residential roads), and on nights when I go to paramedic classes, most of that is basic highway driving. I might hammer down to merge/pass, but most of that drive is cruising right around 3-3.5k rpm, 75mph in 6th gear.

This is my daily driver. I am not a mercenary, bank robber, or stunt man. I want it to go fast simply for the fun factor. Being pushed back in my seat and grinning when I go to the mall is worth more to me than dropping a second on a quarter time. I value reliability, looks, cost, and performance, although not necessarily always in that order.

As for how I will drive in the snow/ice, that's why I have a '79 International Scout rolling around.

[FreshFRS]

Originally Posted by sw20kosh

Alot of exige S owners upgrade their SC to the TVS series and make oodles of power at 9-11 psi. It is no doubt a very advanced/modern design. The breaking point then (in the exige) is the transmission and the engine internals.

Yeah, i watched a lotus blow a tranny a couple years ago. haha had a very similar graph to what you posted. That would be a R1320 if i'm correct, judging buy the flow map from 3000-7400 we get 70% thermal efficiency (1.59 DR about 59% overdriven) (PR starts at 1.5 (2500 rpm)- 1.91 at redline) which should equate to 520cfm at 7000rpm. 10psi should develop around 300whp with a great intercooler. say something like a 700hp A/W core (garret maybe) good pump and plenty big heat exchanger (maybe even a primary tank to start the cooling process smaller battery would give some nice space for that)

[mines13]

Originally Posted by 2forme

Mines, would you be opposed to me adding these referenced figures to my graph for those who are more visually inclined? I won't label you or the product, just to be used for estimated reference purposes

Feel free, however it is important to note that these are pre-production figures and like I mentioned before, not tested in an identical fashion under the exact same conditions making it not really fair for the other system. All of that said, in the area of torque at an identical boost pressure, the other form of supercharging simply can not match a screw system. The only thing really relateable is that the boost pressures are similar.

[nonicname]

lets keep the unrelate stuff out of here.
specially dyno charts.

[2forme]

Originally Posted by mines13

Feel free, however it is important to note that these are pre-production figures and like I mentioned before, not tested in an identical fashion under the exact same conditions making it not really fair for the other system. All of that said, in the area of torque at an identical boost pressure, the other form of supercharging simply can not match a screw system. The only thing really relateable is that the boost pressures are similar.

Of course, but it should give a general idea to those who have a hard time picturing the "effective difference" of power delivery between the two systems. That's what I'm trying to accomplish. It's not a replacement for a head to head dyno.

[gmookher]

okay. we're both trained drivers. dont try this at home:

we drive 92 miles each from phx in sixth gear at 4500+/- 1000 rpms, often climbing the hill in fifth in the upper 6000'rpms. much 4rth gear redlining happens when passing trucks up hills. speed limit here is 75, traffic moves 90. I move faster yet at times. this happens in 115F heat. hence my thermal scrutiny.

I drive generally well into triple digits. much of this driving is at 4am ,roads are deserted
our travel time is 1:10 door to door.

very little passing occurs at 3500 rpms..

my cars all spend their lives seeing very high rpm use, even the ones with v8s

my wife is a MD and responds to call at 2am, also drives same cars, same triple digits for an hour at a time, much redlining goes on where I live

my elevation 1.5 hrs south is 1000 feet
my elevation 3.5 hrs north is 8000 feet
this in a span of a few hundred miles

we put 36,000 miles on her porsche last year alone
I dunno what youre talking about. high compression motors are designed for high rpm use...I didnt buy a sports car to baby it and rev it low. thats what big v8s are for.

LA is 7 hrs according to google maps. we do it in a whole hour less. interstate 40 is a deserted highway, with canyon curves and miles of smiles. this is high rpm country. look at a map between flagstaff and vegas...

[FreshFRS]

Originally Posted by mines13

There have been plenty of twin screw OEM supercharger applications. Mercedes Benz (AMG 55 series cars), Ford (Ford GT super car), Mercury Marine, etc. There are also several current gen Roots supercharged engines. Jaguar, Ford, Cadillac, Chevrolet, Holden, Lotus...

i was only aware of the Ford GT using a lsyholm twin screw didn't know AMG did it as well.

The Efficiency of the TVS series has brought positive displacement superchargers back to the oems (jags (use gen 5 roots i think), ZR1,Zl1,Cts-V,GT500, Holden Commodore, the new lotus's even use an R900 TVS)

For reference lysholms are about 65% thermally efficient at peak, compared to 70+ for TVS. the R1900, 2300 (CTS-V, ZR1) peak at 75 and 76% just shy of vortech's claimed 78%).

[mines13]

Originally Posted by flatline

The way you are talking about driving, I'm not sure how much more efficient your system is going to be?

I would say I rarely get my FR-S up above 5k rpm. I drive it 90% of the time like a normal car (since it *is* my daily driver). Screw all this "because racecar" stuff. My car will almost certainly never see the track and it will never lay down a 1/4.

Personally, I'm fine sacrificing power up top for low-end oomph since I never drive at the redline. I'm not interested in launch control or any of that malarkey. I just want the car to feel a little more responsive on the throttle from 1.5-3.5k rpm. Depending on how much of a hit the fuel efficiency takes, I might be OK with it.

That said, I've had my eye on about half a dozen different FI solutions, but I'm withholding judgement and selection until they are more thoroughly implemented, tested, and flogged.

flatline seems to be getting a lot of attention... If you decide you want to drive like gmookher, you will still make more torque at those higher engine speeds then the centrifugal at the same boost pressure, in fact you will have more torque everywhere.

[brichard0625]

I will be driving the same way flatline does, and i have the same mindset he does when it comes to what he is looking for...Ive been really hesitant on getting anything for the frs due to certain things but this SC was brought to my attention yesterday and after doing my research this is what im looking for in terms of driveability and in march i will be sporting one

[Carwhisperer]

Theres still no dyno forreal? TRD just released theirs.. and its not even available to the public in the spring.

[akuhei]

Originally Posted by Carwhisperer

Theres still no dyno forreal? TRD just released theirs.. and its not even available to the public in the spring.

Where is this? Havent found/seen a dyno for the TRD SC either.

[rice_classic]

Originally Posted by Carwhisperer

Theres still no dyno forreal? TRD just released theirs.. and its not even available to the public in the spring.

Oh yes, please share..

[Cheddar]

Originally Posted by Carwhisperer

Theres still no dyno forreal? TRD just released theirs.. and its not even available to the public in the spring.

Better come up with a dyno quick!

[gmookher]

you need an actual test car, with this running, to get a dyno chart

is there such a thing?