[Cloud9...68]

Dan,

Maybe I misinterpreted. It sounded to me like 4000 rpm is the <i>minimum</i> you run your engine at. Even on the track, keeping it above 4K at all times can be a challenge, because it often entails an extra downshift, particularly through a wide, sweeping, double-apex turn. The extra downshift may end up costing more time and offering more opportunity for upsetting the balance of the car through the corner than could be gained from keeping the engine higher in its power band. On the street, I typically shift at 4000 rpm or so, but I do run it to 5-6K often enough to keep things fun. Gawd, I want that supercharger...

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[rhudeboye]

I hate entering a thread so late. Too much catch up reading to do.

After considering about 13 posts, I think it was Rex that was pretty happy with the car as is. I'm with him. Sure Id take more power and plan to add it, but its not so bad with the few mods many of us have.

Consider this- How much straight away would one need to really get the benefits of adding a turbo or SC. Sure the kick will come in and launch you down the road but once a corner comes into the picture your on the brakes and spooling down the turbo. I'm guessing the NA would be right on the turbos bumper with more brake pads left [img]style_emoticons/<#EMO_DIR#>/smile.gif[/img]

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[Scott Collins]

From the beginning I have always been very happy with the 968's power. But I have never raced it and I came from driving an '87 944 n/a. Naturally, the 968 was a HUGE step up in power from the 944 and I could never go back. The SC kit would probably be another bump in power and torque about as big as from 944 to 968. Having driven a 944 Turbo and talking with folks who know, there is a big price to pay to maintain the turbo so I would not go there because I enjoy the 968 as a car I drive every day and I can only afford so much down time and maintainence expense. Definately not a knock on the Turbo, and I would probably own one if it were my 3rd car.

I can see now, however, that many newer "off the rack" sedans are faster, and my ego has a small problem with that. And lately, I have been more concerned with my suspension and feeling like it sometimes can't handle the existing power.

I hope that RS Barn will have a car with the new SC kit that customers can drive. If I drive it, it will probably mean I will have to go get a 3rd job.

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[flash]

it is our plan to have at least 2 supercharged cars at hershey, and will be offering rides (and some allowed to drive)

as for how much faster a supercharged car would be, you can see from the video of another guy here with a different supercharger, how much faster he is (sorry - you'll have to look for it) - he did a cool window in window comparison on the same track

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[Cloud9...68]

Yes, that was a very cool and eye-opening video. It's amazing how much a little extra power helps on the track, but from the sound of it, Flash's priority with his SC is low-to-mid range torque, which should make the car a lot more fun to drive on the street, too. I want one so bad... It all hinges on getting my wife's new business in the black asap.

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[flash]

lol - yes, the priority is low to mid-range torque - there will be quite a bit up top too, but we are indeed focused on maximizing things down lower where most folks drive - where it ends up in the upper area is just where it ends up

but i've seen the computer modeling, and i'm sure nobody will be disappointed in any area

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[Anchorman]

I'm definitely one of the "over 4k rpm" - but only on the track. Yes, I might have to shift an extra time, but I'm out there for the fun more than for the time. I'm generally pretty pleased with the street performance of the car as is...it's a long time since I worried about street drags. So, I guess where I'm coming out is that if I didn't track the car, I'd be less excited about the SC - although I might do it anyway. However, I can't wait to come out of the "toe of the boot" without my left hand pointing over the roof!

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[ds968]

why the cryptic " you'll have to look for it here " remark ? [img]style_emoticons/<#EMO_DIR#>/huh.gif[/img] who cares, just point me to that video link .. I wanna see the diff also . search brings up too much crap, no time to sort through all that [img]style_emoticons/<#EMO_DIR#>/dry.gif[/img]

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[Cloud9...68]

Dan,

Here you go:

Ever wondered how much faster a 968 powered car could be with just 5lb of supercharged boost?

Heres an interesting comparison over a single lap of the same track, between my car in N/A form (top of the frame) and my car supercharged with 4.5lbs (max indicated) of boost (bottom of the frame).

Although this is not a road car, it's a good comparison because nothing else on the car had been changed at this point, same setup, same tires, similar fuel load and race conditions, no other mechanical changes except for bolt on of the supercharger (with a "5lb" pulley), and a tune.

Two seconds difference in lap times may not seem like much, but racers will appreciate it really is a lot on this very short 1.5 mile track!

http://www.dropshots.com/SteveA#date/200...9/10:02:19

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[flash]

not cryptic dan, lazy

besides, why should i always be the one doing the searching?

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[biotechee]

To answer the original question...

Abso-freakin'-lutely!

BUT - I want more power that is manageable and will not force me into needing to revise the rest of the car (brakes, suspension, etc.). For me, I would want enough power to bring the car's performance up to about 95% of the car's limit.

I'm thinking in the neighborhood of 275-300HP @ the crank would be ideal, for me.

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[flash]

lol - yeah - i think i know EXACTLY how to do that, hence our target numbers

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[ds968]

Thanks Cloud - nice video !

LOL, Bob - because you probably have a Forums chip in your brain that brings up stuff without having to do any searches [img]style_emoticons/<#EMO_DIR#>/tongue.gif[/img] .. actually I thought you did not want to reference it for an entirely different reason.. never mind ( now I'm being cryptic [img]style_emoticons/<#EMO_DIR#>/rolleyes.gif[/img] )


Ok, I totally get there's no comparison b/w this car with an SC and a NA one.. plenty of power and especially low-mid range torque on demand in any gear, etc.. and can't wait to drive one, but curious how big that difference plays out to be, say if the cars were going 70mph, the NA at 4500rpm and the SC at 3000 rpm and both stepped on it, with the NA shifting around 6600 all the way into 6th...to 160mph - would the SC pull away from the NA as if it was a lamp post and get to 160 twenty seconds before the NA gets there, or would it be maybe just two car lengths ahead of the NA at that speed ? Same for a 30 to 80 run.. [img]style_emoticons/<#EMO_DIR#>/huh.gif[/img] This is all in theory I suppose, we'll soon see the real life results, but just wondering..

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[flash]

lol - no dan - i was fine with that, just too lazy to look up the link

i ran against eric sandoval with the SFR kit for a short bit - we both got onto the freeway at the same time - i pretty much held him through 3rd gear and into 4th, but then i ran out of torque and he kept pulling

it's all gear relative - to do what you are proposing, the NA 968 would be in 4th, but the SC car would be in 6th - the mechanical advantage would play in here - based on published acceleration in gear numbers i have, i would say that the NA car would pull the SC car at that point, for about 5-6 seconds - then the SC car would take over and pull away

if you want to find out, go chase down a 997 Carrera S and perform this test - it has about the same power to weight ratio as an SC 968 would have

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