Innovate/Spritex/Bullet... What I found searching the web.

[enouf]

Screw (pun intended) the numbers - @robispec's car sounds like a friggin spaceship. The whine makes me wee just a little...

[Draco-REX]

Ok, I did this once before in one of the "Lost" Innovate threads, so let's do it again:



First, let's convert the units to something more familiar.

Stock 106kW = 143hp
Final 163kW = 219hp

Now, stock, we know the engine produces about 200hp. And a good rule of thumb is that a RWD with a manual transmission and independent suspension loses about 15%. So:

.85 * 200 = 170rwhp

That's a little on the high side, but still in the neighborhood of most stock dynos which land around 165hp. So we know we're on the right track. To keep things conservative, however, let's go with 165rwhp.

So we have what we should see at the wheels stock and what this dyno is showing. We can determine the percentage difference here.

165 / 143 = 1.15

A dyno that would report 165rwhp on a stock car is reading 115% of the dyno used on this graph. We can now figure out where the modified numbers would be:

219 * 1.15 = 251rwhp

Not the biggest numbers we've seen, but very respectable. This puts the crank hp at roughly:

251 / .85 = 295hp at the crank.

What I REALLY like is the shape of the torque curve. Lots of meat where it counts. This kit will be a dream at AutoX for those like me that don't give a fig about classing. The tough part will be getting the rears to hook coming out of the corners. But that's half the fun.

[Asphaltfrs1]

I'm definitely gonna wait out for this, I love the whine it makes. And those are really good numbers for a daily. Well for me at least.

[Batman]

Originally Posted by Draco-REX

Ok, I did this once before in one of the "Lost" Innovate threads, so let's do it again:



First, let's convert the units to something more familiar.

Stock 106kW = 143hp
Final 163kW = 219hp

Now, stock, we know the engine produces about 200hp. And a good rule of thumb is that a RWD with a manual transmission and independent suspension loses about 15%. So:

.85 * 200 = 170rwhp

That's a little on the high side, but still in the neighborhood of most stock dynos which land around 165hp. So we know we're on the right track. To keep things conservative, however, let's go with 165rwhp.

So we have what we should see at the wheels stock and what this dyno is showing. We can determine the percentage difference here.

165 / 143 = 1.15

A dyno that would report 165rwhp on a stock car is reading 115% of the dyno used on this graph. We can now figure out where the modified numbers would be:

219 * 1.15 = 251rwhp

Not the biggest numbers we've seen, but very respectable. This puts the crank hp at roughly:

251 / .85 = 295hp at the crank.

What I REALLY like is the shape of the torque curve. Lots of meat where it counts. This kit will be a dream at AutoX for those like me that don't give a fig about classing. The tough part will be getting the rears to hook coming out of the corners. But that's half the fun.

[sw20kosh]

Originally Posted by Draco-REX

219 * 1.15 = 251rwhp

Not the biggest numbers we've seen, but very respectable. This puts the crank hp at roughly:

What I REALLY like is the shape of the torque curve.

It is no secret I like this kit too.

I do want to point out that what your math has deduced (250 whp @ 7 psi) is what the 'other' supercharger makes at 9-10 psi. *ducks for cover* This run was on higher octane though so it is not apples to apples - I do understand that.


And I wont comment on area under the curve differences as it is pretty obvious.

[Sithspawn]

Originally Posted by tom@kartboy

Interesting read on screw type blowers from Kenne Bell.
http://kennebell.net/KBWebsite/Commo...romcatalog.pdf

Most thing i find interesting is the charge temps at the lower PSI AKA this kit.
What do you think @robispec?

Tom

I'm not a fan of Kenne Bell's literature on their website. It is often inaccurate and presents an incomplete picture. I've also seen quite a few technical errors in their writing as well. Take it with a grain of salt.

[Calum]

Originally Posted by sw20kosh

It is no secret I like this kit too.

I do want to point out that what your math has deduced (250 whp @ 7 psi) is what the 'other' supercharger makes at 9-10 psi. *ducks for cover* This run was on higher octane though so it is not apples to apples - I do understand that.


And I wont comment on area under the curve differences as it is pretty obvious.

So what you're saying is that this system should have less of EVIL heat issues, easier installation, no wires to cut, no holes to drill, should make the same peak power but at a lower pressure, and has more area under the curve.

Why are you ducking? Unless he's back....

[2forme]

Originally Posted by Calum

So what you're saying is that this system should have less of EVIL heat issues, easier installation, no wires to cut, no holes to drill, should make the same peak power but at a lower pressure, and has more area under the curve.

Why are you ducking? Unless he's back....

No, he's not back, but I'm sure he's throwing an epic fit reading this thread.

[Calum]

Originally Posted by 2forme

No, he's not back, but I'm sure he's throwing an epic fit reading this thread.

And now I have to clean the up the milk that just sprayed out of my nose. You know what hurts? Cheerios moving through your nose at high velocity. Fuckin' ouch!

[2forme]

Originally Posted by Calum

And now I have to clean the up the milk that just sprayed out of my nose. You know what hurts? Cheerios moving through your nose at high velocity. Fuckin' ouch!

Sorry man. Go with Cinnamon Toast Crunch. They hurt less in that situation

[swift996]

The absolute numbers aren't bad, it's just difficult to understand the power curve with the scale they used.

It looks like ~+60whp at 4K RPMS!

[OrbitalEllipses]

Originally Posted by 2forme

Sorry man. Go with Cinnamon Toast Crunch. They hurt less in that situation

The cinnamon would likely burn more. I recently made the switch after 15 years of Cinnamon Toast Crunch to Frosted Flakes...can't say I'd prefer one over the other moving through my nose.

[2forme]

Originally Posted by OrbitalEllipses

The cinnamon would likely burn more. I recently made the switch after 15 years of Cinnamon Toast Crunch to Frosted Flakes...can't say I'd prefer one over the other moving through my nose.

Ahh, I was going based off texture. CTC seems to soften up faster than Cheerios. Didn't even think about content. Good catch!

[KevinBRZ]

Going by the above math, this makes about 252-258 lb-ft of torque at 5400 rpm, since it is 15% lower?

295 HP and 255 torque with 2700-2800 pounds of weight will be very respectable. A little less at 91 octane.