Notices
Series I Major Horsepower Upgrades This is the place to discuss Super Chargers and Turbos, Nitrous, Porting, etc

Supercharger performance

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old 02-26-2007, 10:08 AM
  #26  
always filling [the c]up
 
Cody Red's Avatar
 
Join Date: Apr 2006
Location: Alice, Texas
Posts: 1,267
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by Spin9k
Haa yes! What a deal nada for a complete imagined S/C....

here's mine w/under the curve, low and high end power....
Is it completely stock?

-Cody
Old 02-26-2007, 10:21 AM
  #27  
Momentum Keeps Me Going
 
Spin9k's Avatar
 
Join Date: Sep 2002
Location: Colorado
Posts: 5,036
Likes: 0
Received 4 Likes on 4 Posts
Absolutley, it's a completely stock "imagined" S/C . As you can see the management needs a bit of work after 6K or so, but for an actual "imagined" dyno run, not to bad. Soon I hope to have "imagined" power bumped to about 280 RWHP and fattened ^up^ both the torque and HP curve all a long the rpm range.

The only problem is, every time I wake up in the morning, I forget how I "imanaged" to do that
Old 02-26-2007, 12:30 PM
  #28  
Boosted Kiwi
iTrader: (2)
 
Brettus's Avatar
 
Join Date: Apr 2006
Location: Y-cat-o NZ
Posts: 20,537
Received 1,500 Likes on 847 Posts
Originally Posted by MadDog
turbo'd 8's are MUCH faster than S/C 8's.

The reason? You can actually buy turbo kits for the car. I shake my head in disbelief every time I think about those waiting for one of those S/C kits that still haven't made it to market yet.

So as far as which S/C is best, it really doesn't matter. Just choose one you like and imagine it in your car.
LOL - sad but true . But - think of all that money we saved by using our imaginations !
Old 02-26-2007, 12:39 PM
  #29  
Banned
iTrader: (3)
 
MazdaManiac's Avatar
 
Join Date: Oct 2003
Location: Under my car
Posts: 16,386
Likes: 0
Received 24 Likes on 21 Posts
OK Spin - sell us an SC right now. CC is out of the wallet.
I'll send my number over, but I expect it to be at my door this week. I'll pay for 2nd day.
Oh, it better be complete, too. EMS, all mounting hardware, etc.
Old 02-26-2007, 12:42 PM
  #30  
Registered User
 
YayAreaBruh21's Avatar
 
Join Date: Feb 2007
Location: Bay Area
Posts: 134
Likes: 0
Received 0 Likes on 0 Posts
MM howd that homemade turbo come out? Still got it installed?
Old 02-26-2007, 01:04 PM
  #31  
Banned
iTrader: (3)
 
MazdaManiac's Avatar
 
Join Date: Oct 2003
Location: Under my car
Posts: 16,386
Likes: 0
Received 24 Likes on 21 Posts
Originally Posted by YayAreaBruh21
MM howd that homemade turbo come out? Still got it installed?
It rocks.
Tons of threads on it all over the place. I just built a better manifold a few weeks ago.

Funny how there are no home-brew superchargers, either.
Old 02-26-2007, 01:27 PM
  #32  
Registered User
 
YayAreaBruh21's Avatar
 
Join Date: Feb 2007
Location: Bay Area
Posts: 134
Likes: 0
Received 0 Likes on 0 Posts
is it puttin out more than greddy?
Old 02-26-2007, 01:46 PM
  #33  
Administrator
iTrader: (7)
 
Jedi54's Avatar
 
Join Date: Mar 2004
Location: The Dark Side
Posts: 22,410
Received 2,695 Likes on 1,939 Posts
MM, when's the next dyno day? (wondering if you can dupliate the #'s from last time)
Old 02-26-2007, 04:30 PM
  #34  
Banned
iTrader: (3)
 
MazdaManiac's Avatar
 
Join Date: Oct 2003
Location: Under my car
Posts: 16,386
Likes: 0
Received 24 Likes on 21 Posts
Originally Posted by Jedi54
MM, when's the next dyno day? (wondering if you can dupliate the #'s from last time)
I'm going on Saturday.
Old 02-26-2007, 11:24 PM
  #35  
Registered
 
rotarenvy's Avatar
 
Join Date: Feb 2004
Location: QLD .au
Posts: 1,802
Received 10 Likes on 9 Posts
there are a few SC's floating around now. the procharger version in .au and the rotrex one from knigthsports. also there's the blitz one, and the others in development such as axial flow, and roots style ones. there are probably just as many SC kits out there than turbo kits.

I wouldn't mind finding out what the centrifugal SC's deliver. there's enough engine managment options out there now so you don't have to be worried about tuning problems.

here is a interesting development two speed sc

Last edited by rotarenvy; 02-26-2007 at 11:53 PM.
Old 02-27-2007, 01:17 AM
  #36  
Banned
iTrader: (3)
 
MazdaManiac's Avatar
 
Join Date: Oct 2003
Location: Under my car
Posts: 16,386
Likes: 0
Received 24 Likes on 21 Posts
All of which are prototypes, Australian or Japanese market only or one-offs.
The KnightSports is the closest to a "production" unit, and they will only sell them direct and install.
Blitz pulled theirs from market.
HKS gave up when they ditched Rotrex. Apexi did likewise.
Hymee and Axial are still no-shows.
Petit is still in "pre-production" as well.

There are no superchargers on the market right now that one can purchase today.
Old 02-27-2007, 01:21 AM
  #37  
Asshole for hire
iTrader: (1)
 
paulmasoner's Avatar
 
Join Date: Jun 2006
Location: Colfontaine, Belgium
Posts: 3,214
Likes: 0
Received 3 Likes on 3 Posts
thread jack

damn MM, you have some NICE pics you rotate in and out of your avatar. I'd like to see where they come from and see the originals.

now back to your regularly scheduled debate
Old 02-27-2007, 01:31 AM
  #38  
Registered
 
rotarenvy's Avatar
 
Join Date: Feb 2004
Location: QLD .au
Posts: 1,802
Received 10 Likes on 9 Posts
Originally Posted by MazdaManiac
There are no superchargers on the market right now that one can purchase today.
well none that US rx-8 owners can buy :D
Old 02-27-2007, 02:05 AM
  #39  
'03 Dodge Viper
 
SlayerRX8's Avatar
 
Join Date: Mar 2006
Location: University of Maryland
Posts: 842
Likes: 0
Received 1 Like on 1 Post
Originally Posted by Brettus
I like the way the twin screw gives good low down power but I think it becomes more inefficient the higher you rev it .
Not significantly. Full boost from the bottom end to redline. The best parts of roots and centrifugal blowers. The main drawback of the twin screw is that it's expensive.
Old 02-27-2007, 11:04 AM
  #40  
Banned
iTrader: (3)
 
MazdaManiac's Avatar
 
Join Date: Oct 2003
Location: Under my car
Posts: 16,386
Likes: 0
Received 24 Likes on 21 Posts
Originally Posted by SlayerRX8
The main drawback of the twin screw is that it's expensive.
And fragile.
Old 02-27-2007, 11:24 AM
  #41  
Always lurking
 
JB_Rotary's Avatar
 
Join Date: Aug 2005
Location: Chicago, IL
Posts: 316
Likes: 0
Received 0 Likes on 0 Posts
Would a centrifigal supercharging(turbo on a pulley) be better for a high reving engine like ours? A lot of people seem to hate centrifugal chargers but at high RPM woudln't they be less parasidic?
Old 02-27-2007, 11:39 AM
  #42  
Banned
iTrader: (3)
 
MazdaManiac's Avatar
 
Join Date: Oct 2003
Location: Under my car
Posts: 16,386
Likes: 0
Received 24 Likes on 21 Posts
The faster you spin a centrifugal, the higher the parasitic loss.
However, a centrifugal would be great up top - but it would deliver zero boost below 6k if it were properly geared for 9k.
Old 02-27-2007, 11:56 AM
  #43  
Administrator
 
zoom44's Avatar
 
Join Date: Jul 2002
Location: portland oregon
Posts: 21,958
Received 115 Likes on 88 Posts
Originally Posted by MazdaManiac

I won't contribute any more to the "SC vs TC" debate - its been pounded to death and no one on the "wrong" side is listening, anyway.
how can we be expected to listen with that distraction of two girls kissing with a boob about to pop out of its confinement right in front of us when we are trying t o read your posts? it makes concentrating really difficult.. for some i mean... i can ignore it....
Old 02-27-2007, 12:04 PM
  #44  
Registered
iTrader: (1)
 
r0tor's Avatar
 
Join Date: May 2003
Location: PA
Posts: 3,754
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by MazdaManiac
Question: What does a turbo and a rotary motor have in common that a supercharger and a rotary motor do not?
would the answer be turbo lag or one exists and the other doesn't
Old 02-27-2007, 12:35 PM
  #45  
Banned
iTrader: (3)
 
MazdaManiac's Avatar
 
Join Date: Oct 2003
Location: Under my car
Posts: 16,386
Likes: 0
Received 24 Likes on 21 Posts
Originally Posted by zoom44
how can we be expected to listen with that distraction of two girls kissing with a boob about to pop out of its confinement right in front of us when we are trying t o read your posts? it makes concentrating really difficult.. for some i mean... i can ignore it....
Its a red herring. Or some other fishy distraction...

Originally Posted by r0tor
would the answer be turbo lag or one exists and the other doesn't
Well, (B) is a possibility since I've never experienced (A).
Old 02-27-2007, 04:39 PM
  #46  
Registered
 
rotarenvy's Avatar
 
Join Date: Feb 2004
Location: QLD .au
Posts: 1,802
Received 10 Likes on 9 Posts
Originally Posted by MazdaManiac
Its a red herring. Or some other fishy distraction...


Well, (B) is a possibility since I've never experienced (A).
so your saying you have never experienced turbo lag?
Old 02-27-2007, 04:42 PM
  #47  
⎝⏠⏝⏠⎠
 
mysql101's Avatar
 
Join Date: Apr 2004
Location: USA
Posts: 8,625
Received 5 Likes on 4 Posts
We get full boost under 3,000 rpm... you're out of 3,000 so quickly there really isn't any way to get lag.
Old 02-27-2007, 05:15 PM
  #48  
Registered
 
rotarenvy's Avatar
 
Join Date: Feb 2004
Location: QLD .au
Posts: 1,802
Received 10 Likes on 9 Posts
you may be able to compensate for the lag but you always have it with a turbo. just like you can compensate for the lack of torque and power with a NA 8 by reving it more.

I haven't experienced a factory turbo that doesn't give a sense of lag due to non-linier power delivery. wrx's have it, my Vauxhall turbo has it, the turbo diesels at work have it. they all boost from 2500-3000rpm but they don't make any real power there and idle is 1000rpm. that's a lag gap.

but I don't want this thread to diverge in to the turbo/sc debate. they both have their peculiarities. this thread should be about sc experiences and performance.

I think the possibility of a smooth building of boost and hence torque and power from a centrifugal sc would be nice to drive hopefully I will get a chance to experience one.
Old 02-27-2007, 05:49 PM
  #49  
Zoom-Freakin'-Zoom
iTrader: (5)
 
swoope's Avatar
 
Join Date: Jan 2004
Location: orlando, fl
Posts: 14,602
Received 35 Likes on 31 Posts
Originally Posted by MazdaManiac
Its a red herring. Or some other fishy distraction...

by far this is the best imho... and pm...

beers
Old 02-27-2007, 06:48 PM
  #50  
Banned
iTrader: (3)
 
MazdaManiac's Avatar
 
Join Date: Oct 2003
Location: Under my car
Posts: 16,386
Likes: 0
Received 24 Likes on 21 Posts
Apparently, someone needs to learn what turbo lag actually is.


You have already rated this thread Rating: Thread Rating: 0 votes,  average.

Quick Reply: Supercharger performance



All times are GMT -5. The time now is 06:34 AM.