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Racecar a`la Rx-8.

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Old 04-25-2007, 05:22 AM
  #26  
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Nice pic,s Lennart! It shall be interestnig to see who,s the fastest on Friday at Mantorp Park track!? Humm....

/Lasse
Old 04-25-2007, 05:55 AM
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wtb larger pics
Old 04-25-2007, 08:21 AM
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If all you do is race, then it will not matter about the low end power curve. Keeping the revs up on a track keeps you in the power band.
Old 04-25-2007, 08:43 AM
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Originally Posted by shaunv74
Any way you can post a graph of HP and tq in ftlbs for us knuckle draggers in the states?
jfyi it's available in the united states too. I know Titan motorsports (in Orlando) carries it.

Though I would strongly agree with RG - the powerband on this kit isn't street friendly.
Old 04-25-2007, 10:50 AM
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Originally Posted by Lasse wankel
Nice pic,s Lennart! It shall be interestnig to see who,s the fastest on Friday at Mantorp Park track!? Humm....

/Lasse
YYYYYYeeeeeeeeeeiiiiiiiiiiiiiii man.
Old 04-25-2007, 11:59 AM
  #31  
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Is this the stage 1 or stage 2 kit? Looks really impressive, I've been waiting for a SC system for years and it doesn't looks like any of the others are close to release. And I think I'd prefer a kit that kicks in around 4k, I see very little use for boost below 4k rpm.
Old 04-25-2007, 12:10 PM
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Originally Posted by RX-Hawk
Is this the stage 1 or stage 2 kit? Looks really impressive, I've been waiting for a SC system for years and it doesn't looks like any of the others are close to release. And I think I'd prefer a kit that kicks in around 4k, I see very little use for boost below 4k rpm.
it's more than just no boost under 4k, you're actually slower than stock at that range.
Old 04-25-2007, 12:56 PM
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Originally Posted by RX-Hawk
Is this the stage 1 or stage 2 kit? Looks really impressive, I've been waiting for a SC system for years and it doesn't looks like any of the others are close to release. And I think I'd prefer a kit that kicks in around 4k, I see very little use for boost below 4k rpm.
It`s stage 2 kit. The kit has been there for a couple of years. (In AUS.)
My car is a "racecar" not street legal so I have no use under 5k anyway.
Attached Thumbnails Racecar a`la Rx-8.-p3200005-2.jpg   Racecar a`la Rx-8.-p3200006-1.jpg  
Old 04-25-2007, 01:03 PM
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That's awesome - maybe a removable steering wheel is next?
Old 04-25-2007, 02:16 PM
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Originally Posted by rotarygod
Most of your daily driving is under 4500 rpm. You'll lose gas mileage like crazy. I've never been a fan of centrifugal superchargers so admittedly I am biased against them. The dynos show why though. Performance is not about peak horsepower. Average horsepower is faster and centrifugals don't have nearly as much average horsepower as the peak would imply. I'd personally rather sacrifice 30 peak horsepower to get a wider and stronger average powerband. I guarantee it would be faster.
really? I hardly get out of 2nd in daily driving. and i am almost always above 5k rpm. who shifts at 4k, honestly?
Old 04-25-2007, 02:27 PM
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Originally Posted by myriadshalaks
really? I hardly get out of 2nd in daily driving. and i am almost always above 5k rpm. who shifts at 4k, honestly?
Noone!!
Old 04-25-2007, 02:33 PM
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myriadshalaks whats your mpg? How many miles per tank?
Old 04-25-2007, 02:34 PM
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Originally Posted by Lennart
It`s stage 2 kit. The kit has been there for a couple of years. (In AUS.)
My car is a "racecar" not street legal so I have no use under 5k anyway.
I think pretty cool, and a good choice of SC for the purpose. Are you going to be posting any vids of the car on the track?

What about some other specs: type of dampers, maybe spring rates, brakes, etc...
Old 04-25-2007, 06:31 PM
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Car looks nice. But I have some real problems with your graphs.
I haven't time right now and I will get back on this today.
Just to get you guys thinking let's start with a 120% power increase from 10 psi manifold pressure. Or Pr of 1.68.
I'd buy 55% if eveything were done right.

I have more questions but you guys know how fast I type.
Old 04-25-2007, 06:39 PM
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Originally Posted by SmokeyTheBalrog
myriadshalaks whats your mpg? How many miles per tank?
lol. all i know anymore is that I spend 35 dollars every 3 days or so. I consider it money well spent.
Old 04-25-2007, 07:18 PM
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Nice pics, Now we need Video.....Please
Old 04-25-2007, 09:05 PM
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Originally Posted by myriadshalaks
lol. all i know anymore is that I spend 35 dollars every 3 days or so. I consider it money well spent.

lol. Rock on.
Old 04-25-2007, 09:30 PM
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Originally Posted by Richard Paul
Car looks nice. But I have some real problems with your graphs.
I haven't time right now and I will get back on this today.
Just to get you guys thinking let's start with a 120% power increase from 10 psi manifold pressure. Or Pr of 1.68.
I'd buy 55% if eveything were done right.

I have more questions but you guys know how fast I type.
I'd concur that the graphs are wacky, but right now I'm just assuming we're missing a lot of information. The stock graph at 148 hp has what I think might be an assanine torque curve, but I can't read everything.
Old 04-25-2007, 10:01 PM
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the two graphs are in different scales one metric one imperial - that is why they dont meet .
Old 04-25-2007, 10:14 PM
  #45  
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^^Yup. That's why I wanted to see hp vs. tq in ftlbs graph to see where they crossed.
Old 04-25-2007, 11:41 PM
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Originally Posted by myriadshalaks
really? I hardly get out of 2nd in daily driving. and i am almost always above 5k rpm. who shifts at 4k, honestly?
I have no idea. You don't need to go that high. I've usually shifted by 3K and I keep up with traffic just fine. And on top of that I do it in a Civic which has a fraction of the power of an RX-8! You have no need to be shifting anywhere near that high for daily driving. You can be more frugal and still be as quick. A race car is different of course. Even if you shift regularly at 5K, with this supercharger that means that you've only been in at a power advantage over stock for a whopping 500 rpm by the shift point and you made far less power everywhere below that. In other words, your daily driver is still slower for all practical purposes.
Old 04-25-2007, 11:43 PM
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Originally Posted by Richard Paul
Car looks nice. But I have some real problems with your graphs.
I haven't time right now and I will get back on this today.
Just to get you guys thinking let's start with a 120% power increase from 10 psi manifold pressure. Or Pr of 1.68.
I'd buy 55% if eveything were done right.

I have more questions but you guys know how fast I type.
Richard ignore what the engine dynos at. It has the ability to put out 250 hp at the crank stock when tuned properly. It's been done. Your potential gains are based on what the engine CAN do not what it does do. If I detuned an engine to produce 100 hp, and believe me, it's possible, that doesn't mean that suddenly it only has the ability to produce 200 hp at 1 bar of boost. What the engine does do is irrelevant. What it's capable of is all that matters.
Old 04-26-2007, 02:05 AM
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OK Fred you want to go there?
Let's take your 100 HP engine that was detuned from 200 HP.
In order to do that you had to give it less valve timing, less compression, smaller ports and slow it down.
Then in order to base your new found power on the potential power you first need to bring all those factors back to the high power tune.
Our instant case did no such thing, he only put the SC on and an exhaust.
So where did he get 120% increase from 10 psi boost?
Was it the exhaust or the sparkplug wires?
Everyone wants to know so they can get out there before the store runs out of sparkplug wires.

I don't know where your 250hp engine came from but the only ones I saw were 219 and 221 at the flywheel. You know where that was and you know they are honest. Then we know that Hymee tried with headers and a Motec and never got 230. You know they had control of all the tuning and the people running the dyno facility know rotarys.

Would you like to go back to basic airflow and figure it out from there? We have that info also.
Listen I'm all for someone getting good power out of these things because that means I can do it too. I applaud these guys for doing what they did, I just can't let some shop get away with pouring BS on with a cement mixer.

There is someone over here tonight that can type so if you think we should do all the math then I'll get her in here and go at it.
Other then all that how are things in Texas?
Someone contacted me today wanting an Rx7 kit, Maybe you might want to build those. I can't even say if the brackets work.
Old 04-26-2007, 02:09 AM
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One more thing Fred:

http://video.google.co.uk/videoplay?...3939&q=gattaca
Old 04-26-2007, 01:46 PM
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Oh damn that's funny! LOL!


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