Notices
928 Forum 1978-1995
Sponsored by:
Sponsored by: 928 Specialists

Euro S race car supercharged

Old 05-15-2006, 01:28 PM
  #16  
FBIII
Three Wheelin'
 
FBIII's Avatar
 
Join Date: Nov 2003
Location: Doylestown, PA
Posts: 1,481
Likes: 0
Received 1 Like on 1 Post
Default

With the 5.0 hybrids putting about 300 hp to the rear wheels, is the extra cost, additional weight and the potential for flirting with disaster worth an additional 50 hp? I don't know the answer but thought it an interesting issue to toss around.
Old 05-15-2006, 02:32 PM
  #17  
Jean-Louis
Rennlist Member
Thread Starter
 
Jean-Louis's Avatar
 
Join Date: Jul 2004
Location: Waukesha,WI
Posts: 141
Likes: 0
Received 0 Likes on 0 Posts
Default

I tried to do the 5l hybrid 3 years ago and had some problems with it. Now looking at cost and TIME I will definetely never do the 5.0l again. This took me 4 hours to install everything (you can do the install and go to the dyno the same day !!!) and if I have any problems at the track I can come back to my original set up in 20mn.
Jean-Louis
928 Eurogroup LLC


"""With the 5.0 hybrids putting about 300 hp to the rear wheels, is the extra cost, additional weight and the potential for flirting with disaster worth an additional 50 hp? I don't know the answer but thought it an interesting issue to toss around.""""
Old 05-15-2006, 02:41 PM
  #18  
hacker-pschorr
Administrator - "Tyson"
Lifetime Rennlist
Member
 
hacker-pschorr's Avatar
 
Join Date: Aug 2001
Location: Up Nort
Posts: 1,449
Received 2,069 Likes on 1,181 Posts
Default

Originally Posted by Jean-Louis
if I have any problems at the track I can come back to my original set up in 20mn.
This is the #1 reason why I love this setup! If something starts to act funny on my SC81, it takes less than 5 minutes to disconnect the blower and see what's going on under stock conditions.
Old 05-15-2006, 02:44 PM
  #19  
checkmate1996
Rennlist Member
 
checkmate1996's Avatar
 
Join Date: May 2002
Location: Columbus, Oh
Posts: 2,418
Received 161 Likes on 96 Posts
Default

now what about supercharging the a 5.0l hybrid??
Old 05-15-2006, 03:12 PM
  #20  
BC
Rennlist Member
 
BC's Avatar
 
Join Date: Dec 2001
Posts: 25,130
Received 72 Likes on 53 Posts
Default

WHat class has this put you in Jean-Louis?

BTW - we met in 2000 at the dyno day in IL, where you trailered your grey race car down with your wife.
Old 05-15-2006, 03:20 PM
  #21  
Jean-Louis
Rennlist Member
Thread Starter
 
Jean-Louis's Avatar
 
Join Date: Jul 2004
Location: Waukesha,WI
Posts: 141
Likes: 0
Received 0 Likes on 0 Posts
Default

Brendan I remember we met at the Joliet dyno and at Michael also, for the class this is another story, right now I am concentrated on the HP gain and go to Road America to really check the car.
Jean-Louis
928 Eurogroup LLC

''''WHat class has this put you in Jean-Louis?''''
Old 05-15-2006, 03:28 PM
  #22  
BC
Rennlist Member
 
BC's Avatar
 
Join Date: Dec 2001
Posts: 25,130
Received 72 Likes on 53 Posts
Default

Sounds great. I have to get to the track, in SOMETHING.

Originally Posted by Jean-Louis
Brendan I remember we met at the Joliet dyno and at Michael also, for the class this is another story, right now I am concentrated on the HP gain and go to Road America to really check the car.
Jean-Louis
928 Eurogroup LLC

''''WHat class has this put you in Jean-Louis?''''
Old 05-15-2006, 03:40 PM
  #23  
Drewster67
Nordschleife Master
 
Drewster67's Avatar
 
Join Date: Sep 2002
Location: Gilbert, AZ
Posts: 5,848
Likes: 0
Received 1 Like on 1 Post
Default

I know that same Orginizations will not allow forced cars, unless they are built that way from the factory.

IE - With ASA/Pro Auto (my old club - no longer working for them) if I forced my shark I could not race in any big bore race class, (anything over 4.0L) because it didnt come stock like that. No matter what class - but for ***** out street car track days. Acceptable.
Old 05-15-2006, 06:47 PM
  #24  
Malibu310
Racer
 
Malibu310's Avatar
 
Join Date: Oct 2004
Location: Minneapolis
Posts: 434
Likes: 0
Received 0 Likes on 0 Posts
Default Dyno Compare - Supercharged vs. Chevy 928...

I superimposed as best I could the Dyno I had done last friday with your Supercharged 928. I'm not sure at low RPM's how accurate the comparison is, but at mid to higher RPM's the comparison sould be fairly accurate.

As you can see your 928 has more horsepower and torque than my 6.3 litre Chevy normally aspirated, and as all 928 engines the power comes on at higher RPM's. The Chevy offers much more mid range power which is likely to be felt without driving the engine very hard. In fact the Chevy loses power after mid-range... this would have less of a top end... the supercharged 928 should have a much better top speed...
Attached Images  
Old 05-15-2006, 09:21 PM
  #25  
Imo000
Captain Obvious
Super User
 
Imo000's Avatar
 
Join Date: Aug 2003
Location: Cambridge, Ontario, Canada
Posts: 22,846
Received 336 Likes on 243 Posts
Default

Originally Posted by Carl Fausett
Nice numbers, Jean-Louis. I am superchargiung a 10.4:1 16v Euro S now also, so I'll see what I get at the dyno in comparison.

You will be a Monster now at the PCA events - you have learned to conserve your speed thru the corners with the lower-output setup, now with more straight line acceleration too - you'll be wicked!
Beef up you oil separator/catch can system if you haven't already.

SMTCapeCod - The MSD Boost Sensitive timing retard products will not work with the early 928 ignition. We have transistorized ignition, not the capacitive discharge ignition they are looking for, and the MSD box is designed for primary voltages of 12 to 14v, where we are running about 9.6 V after the ballast resistors (early cars). I cannot say whether the MSD product would or would not work on later 928 ignitions, I am just speaking to the early 928 16v ignition.
Carl,

You are indeed correct about the 928 not being compatible with the MSD boost retard boxes. Mark installed two on his turbo '86, according the direct instruction from MSD and yet still fried both of them. I have two on my shelf but will nto be using it on the 928. Its really too bad casue they are an excellent product.
Old 05-16-2006, 12:56 AM
  #26  
mark kibort
Rennlist Member
 
mark kibort's Avatar
 
Join Date: Feb 2003
Location: saratoga, ca
Posts: 29,946
Received 141 Likes on 60 Posts
Default

very impressive for such little boost. looks like 320 ave rear wheel hp over the operational range of 4500 to 6000rpm. not bad. Like an older GT3 cup car!

mk
Old 05-16-2006, 01:06 AM
  #27  
mark kibort
Rennlist Member
 
mark kibort's Avatar
 
Join Date: Feb 2003
Location: saratoga, ca
Posts: 29,946
Received 141 Likes on 60 Posts
Default

nah, you can run in most all racing groups in a top class with any kind of blower. in ITE, its anything goes, in PCA, you get tossed into the top group with the fastest cars in the world, due to displacement and it being turboed. POC, same thing. TCRA, also top class and displacement .

the good news, get some trick intercooler and you get that think in the 400hp range quick. maybe some adjustment button for on demand extra boost!

MK



Originally Posted by Drewster67
I know that same Orginizations will not allow forced cars, unless they are built that way from the factory.

IE - With ASA/Pro Auto (my old club - no longer working for them) if I forced my shark I could not race in any big bore race class, (anything over 4.0L) because it didnt come stock like that. No matter what class - but for ***** out street car track days. Acceptable.
Old 05-16-2006, 01:11 AM
  #28  
FlyingDog
Nordschleife Master
 
FlyingDog's Avatar
 
Join Date: Sep 2004
Location: Not close enough to VIR.
Posts: 9,429
Likes: 0
Received 2 Likes on 2 Posts
Default

Malibu, there's something wrong with your dyno chart since the curves don't intersect at 5252. Also, you you have 1.6L (34%) more displacement than the N/A Euro, but that only gives you (less than) 28hp (10%) more hp.

Jean-Louis, that's a pretty cool project. Do you plan on incresing the boost, or running it on straight 93?
Old 05-16-2006, 03:41 AM
  #29  
Mrmerlin
Team Owner
 
Mrmerlin's Avatar
 
Join Date: May 2004
Location: Philly PA
Posts: 27,870
Received 2,243 Likes on 1,241 Posts
Default

Hi if you have not talked to Carl about his windage tray/seperator it might be a good idea to find out it could save the engine, in the turns, Goodluck, Stan
Old 05-16-2006, 10:03 AM
  #30  
Rick Carter
Rennlist Member
 
Rick Carter's Avatar
 
Join Date: Apr 2004
Location: Central Ohio
Posts: 10,133
Received 68 Likes on 44 Posts
Default

I superimposed as best I could the Dyno I had done last friday with your Supercharged 928. I'm not sure at low RPM's how accurate the comparison is, but at mid to higher RPM's the comparison sould be fairly accurate.

As you can see your 928 has more horsepower and torque than my 6.3 litre Chevy normally aspirated, and as all 928 engines the power comes on at higher RPM's. The Chevy offers much more mid range power which is likely to be felt without driving the engine very hard. In fact the Chevy loses power after mid-range... this would have less of a top end.
Malibu,
This is Rob's stroker

1985 928SS, AT Platinum Metallic, 440 RFPT/360 RWHP

Maybe you could compare you dyno graphs with his. Would a better intake wake up the top end of your 383? It works for the 928 strokers.

Thread Tools
Search this Thread
Quick Reply: Euro S race car supercharged



All times are GMT -3. The time now is 09:13 PM.