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Author
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Topic: Twin Supercharger Package Revealed! (Pics)
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Dan Cragin
From:Santa Monica, California, USA
Registered: Oct 2000
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Well, here is a picture of our twin blower setup. Go to the
Performance products area for more info and pics!
 ------------------
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Sheyster
From:San Diego, CA.
Registered: Dec 2000
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Awesome Dan! Can you post more info such as how much boost, engine mods, cost, hp/tq, intercooled, etc ?Thanks in advance! ------------------
Sheyster.
2000 GTS - Steel Gray Pearl - Silver Stripes Web Site: www.sdvipers.com "The only thing we have to fear is fear itself." F.D.R. This message has been edited by Sheyster on 11-04-2001 at 11:04 PM
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Paul Hawker
From:San Diego, Calif, USA
Registered: Oct 2000
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Dan..Unbelievably spectacular. Don't know what it is about those 2 beautiful blowers, but they seem to be just right hanging off the front of that V-10. Know it is a lot of hard work to R&D such a system. Hope it is a great success. Please keep us posted.  ------------------
Paul Hawker, San Diego
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Rich Detert
Gateway VCA Member
From:Barnhart, MO. USA
Registered: Oct 2000
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Even the word Awesome is an understatement!Everyone will want details about HP gains, ease of installation and price as the info becomes available.  ------------------
Rich Detert
Red 94 RT/10 With Silver Stripes!
Red 99 Dakota R/T
RichDetert.com
Rich's Shifter Parts
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Ulysses
SoCal VCA Member
From:San Diego, CA. USA
Registered: Oct 2000
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Wow!! That is beautiful! Must sound awesome!------------------
"The one who laughs last, was the last one to get the joke." 2000 GTS Steel Grey
K&N's, smooth tubes, Snake Oyl cat backs, yellow side sills  ulyssess@amcc.com
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Backdoc7
From:Chino Hills, Ca, U.S.A.
Registered: Sep 2001
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Wow.. if that's not cool......------------------
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Casey
IN/KY VCA Member
From:Valparaiso, IN.
Registered: Mar 2001
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Looks awesome!! What are the Dyno numbers and the Dollar numbers?? Could you email them to me?
Thanks
Casey------------------
1st Viper-'97 Red GTS
Current Viper-'98 Silver GTS
Next-2003 ASAP!!
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Dan Cragin
From:Santa Monica, California, USA
Registered: Oct 2000
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Thanks for the response,
This has been a long project and the development is nearing completion. Price and performance numbers will follow soon,
as well as several stages of upgrades.Thanks,
Dan Cragin
The Viper Shop
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TOM & SARAH
From:United Kingdom
Registered: May 2001
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WOW!!!I want one.....well two !!... i,ll be writing to Santa this xmas.Nice one Dan,look forward to reading the R&D/Numbers on this one.------------------
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GTS Dean
Proud VCA Member
From:New Braunfels, Texas
Registered: Jul 2000
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Hoooo-weeeee! Gotta like that one!------------------
GTS Dean - Team Texas This message has been edited by GTS Dean on 11-05-2001 at 07:38 PM
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TurboSnake
From:Detroit,MI,USA
Registered: Jan 2001
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Dan,
How much parasitic drag at full boost are you getting by running two blowers of the crankshaft?
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Frank 01GTS
Land of OZ VCA Member
From:Shawnee, Kansas
Registered: Oct 2000
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That is really great looking. Dan, where is the aluminum cross support that usually goes through the area where the turbos are? Did you substitute the mounting brackets for the cross support? Don't even know if it is needed ---------------------
X
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Matt
Proud VCA Member
From:San Jose, CA
Registered: Oct 2000
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Dan,Nice looking install and great work. I do have a couple questions though. What is the reasoning behind using two superchargers instead of just one? I'm guessing the reliable level of boost that these will be run at could be handled by a single head unit? As TurboSnake mentioned, there would seem to be an increase of parasitic loss due to the crank having to spin two units. -Matt ------------------
96 RT/10 -Red/Yellow
Edelbrock Headers, High Flow Cats, Borla Cat-Back, K&N Filters, Smooth Tubes
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OrecaGTS-R/T
From:Melbourne, Victoria, Australia
Registered: Oct 2000
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quote:
Originally posted by Matt:
Dan,Nice looking install and great work. I do have a couple questions though. What is the reasoning behind using two superchargers instead of just one? I'm guessing the reliable level of boost that these will be run at could be handled by a single head unit? As TurboSnake mentioned, there would seem to be an increase of parasitic loss due to the crank having to spin two units. -Matt
NOVELTY 
No, there must be some reasoning behind it but i'll let Dan explain that one because i have no idea! ------------------
The Complete Dodge Viper - http://dive.to/300kph
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Albert Chlouber
From:Houston Texas
Registered: Oct 2000
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I was wondering the same thing. Why two and not one? Sure, twin turbos are nice, but they are effective. Twin superchargers seems like a waste, not to mention adding so much weight ahead of the front wheels. How do you balance the airflow output between the two so that the engine receives a balanced airflow. From your pictures you seem to be using just a ribbed belt. Without having an equal belt contact and tension on each pulley, the superchargers can and most likely will spin at different rates due to slippage and belt harmonics. That is a huge reason why every racer with a 1200+ HP 5.0 uses one supercharger and a cog belt. What kind of bypass valve are you using for compressor surge with such large units? It looks like an engine for bragging rights. When you finish it, bring it to Texas. At least then someone with a Supercharged Viper will Show up to race the Fastest Vipers in the World!! ------------------
713-857-9998 Nitrous Express Master Wholesale Distributor
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Matt
Proud VCA Member
From:San Jose, CA
Registered: Oct 2000
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quote:
Originally posted by Albert Chlouber:
How do you balance the airflow output between the two so that the engine receives a balanced airflow.
In one of the other pictures it is more clear, but there appears to be a balance tube just ahead of the throtte bodies to address this issue. -Matt ------------------
96 RT/10 -Red/Yellow
Edelbrock Headers, High Flow Cats, Borla Cat-Back, K&N Filters, Smooth Tubes
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Albert Chlouber
From:Houston Texas
Registered: Oct 2000
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I didn't notice that. I am sure it will have a lot of power. Maybe even enough to come visit The Fastest Vipers in The World!!------------------
713-857-9998 Nitrous Express Master Wholesale Distributor
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Dan Cragin
From:Santa Monica, California, USA
Registered: Oct 2000
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Thank you for the comments,
We went with the twin blowers for several reasons, with two
units you have a much fatter boost curve. The engine comes under boost earlier and makes more low rpm power. Being that each blower is not working as hard as one, parasitic loss is comparable. With two superchargers blower surge problems are reduced and tuning is easier. This system incorporates an all
new blower design (developed for this application),it is not a Vortec or Paxton. The system also uses a balance tube and a special belt tensioning system (that addresses the torque loads
of two blowers). The crossmenber is replaced with a stronger
trianglated unit.
Dan Cragin
The Viper Shop
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This message has been edited by Dan Cragin on 11-07-2001 at 05:04 PM
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SEASNAKE
Carolinas VCA Member
From:Kure Beach, NC USA
Registered: Oct 2000
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Dan,Will this work for the Gen1 cars and is it DIY? Dave ------------------
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