Latest Supercharger Picture....

[Sean Roe]

Hi Everyone,

After several hundred hours of development and months of the car being down, here's a current picture of the R&D setup on our GTS. This one will be coming off the car in 2 or 3 weeks so we can finalize and test the first prototype production unit.
We're a little behind our schedule, but are trying to catch back up. Just thought you guys (and gals) would like an update.
This is not the look of the final kit, just the most current R&D iteration.

Sean

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<FONT COLOR="#ff0000" SIZE="1" FACE="Verdana, Arial">This message has been edited by Sean Roe on 02-23-2002 at 01:50 PM</font>

 

[MES]

Looks nice. Do you have a pic of the aluminum cross brace area? Did you cut it to make room for the belt? Thanks.

 

[Sean Roe]

Thanks Mes,
No changes to the cross brace were necessary, all stock up front. One part of the design requirement was to make it as easy to install as possible (so your car doesn't have to be down or away for months like mine

). The SC runs off the stock serpentine belt setup with a longer 7 rib belt. Because of the boost level we're running (5 psi) and the resulting low drag of the SC, we didn't have to key the crankshaft.

p.s.
Emailed you a picture.

Yes folks, it's running and is currently at the engine tuning facility

<FONT COLOR="#ff0000" SIZE="1" FACE="Verdana, Arial">This message has been edited by Sean Roe on 02-23-2002 at 02:31 PM</font>

 

[Chuck 98 RT/10]

What about the fuel delivery system? What mods need to be made to it?

 

[King RT10]

Whats the price of the most inexpensive unit and whats the minimum horepower that we can expect from a base unit?

 

[Sean Roe]

Chuck,
The mods to the fuel system are fairly light at this boost level, but are critically important to get right. As you can see, the injectors are not stock. I won't go into any more detail right now, but the fuel and engine management is being done by a very specialized shop. The engine tuning and driveability is one of the strong points of what we're building.

Mark,
It's not a Whipple. Whipple doesn't manufacture superchargers. This is an Autorotor twin screw.

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IBV,
We haven't figured out a name for this first level yet, but the minimum gain is 100 RWHP, maybe more

. There will be upgrades available to add more power (more boost and fuel) to the base system. Price will be low, comparatively speaking (you'll be able to put it on your credit card), and you won't have to send your car away to have it installed. But, we're not going to be making the kind of HP as the big DLM and SVS SC systems either.

<FONT COLOR="#ff0000" SIZE="1" FACE="Verdana, Arial">This message has been edited by Sean Roe on 02-23-2002 at 04:24 PM</font>

 

[9secRT]

Sean:

I see you keep blacking out the back part of the supercharger where the air flows into the unit.... Is there some reason for this or is that the big secret. I am very curious to see how you will get the needed airflow into the system because it seems it will take a "hard" 90 degree turn to mount up to the back thus causing a real bottle neck. Very interesting to see how this turns out!!!!!!

Thanks,
Mark H.
(out of the racing business)

 

[Sean Roe]

Hi Mark,

The air inlet to the SC is ok right now, but not optimal. It was not made (on this one), the way I wanted it done. So, instead of showing it and having other people point out something that could be done better, I decided to black it out. Even with this less than optimum setup, the SC as pictured made 5 lbs of boost on the dyno. The next one will have a larger plenum area at the inlet of the SC and will be better. May require a change in the pulley size. This is just the R&D setup and is coming off the car in a couple weeks, though I will publish what it does on the dyno, as is, before it comes off.

Sean

 

[Chuck 97 GTS]

Hey Sean, can the VEC-1 be used with this setup or is it unnecessary?

 

[Sean Roe]

Chuck,
At the moment, the VEC1 is being used for tuning.

Jason,
It sounds normal at low loads and very strong under boost. I'll record a sound file when it gets its DynoJet test and runs a full rpm sweep. All the tuning is being done on a Clayton load dyno.