Home  
Site Partners: SpotterGuides Veloce Books  
Related Sites: Your Link Here  

Go Back   TenTenths Motorsport Forum > Saloon & Sportscar Racing > Sportscar & GT Racing

Reply
 
Thread Tools Display Modes
Old 21 Jan 2007, 22:33 (Ref:1821283)   #1
AU N EGL
Veteran
 
AU N EGL's Avatar
 
Join Date: Jul 2006
United States
Raleigh, North Carolina
Posts: 4,418
AU N EGL should be qualifying in the top 10 on the gridAU N EGL should be qualifying in the top 10 on the grid
Porsche engines

Differnt race seriers with slightly differnt engines rules.

2007 Porsche Daytona Prototype Engine

The Porsche 3.8 liter power plant is a production based naturally aspirated engine built to Grand American Road Racing specifications: maximum engine RPM, throttle body size/diameter, valve lift and size and maximum compression ratio are specified. Engine air box and air inlet restrictions are also required. Grand American approves all components and parts prior to being used in competition and the parts must be for sale to the public for sale
Technical Specifications

ENGINE CONFIGURATION 90 degree DOHC 3.4 liter NUMBER OF CYLINDERS 8, water cooled HORSEPOWER 503 at 10,300 TORQUE 273 ft lb at 7,500 rpm OUTPUT 148 bhp per liter POWER TO WEIGHT 3.3 lbs per bhp INDUCTION naturally aspirated; 44 mm restrictor ENGINE MANAGEMENT Bosch MS 4.2 electronic VALVE CONFIGURATION 32 valves, DOHC, chain driven CRANKSHAFT Alloy steel, five main bearing caps PISTONS Forged aluminum alloy CONNECTING RODS Machined alloy steel LUBRICATION Dry sump COOLING Oil water heat exchanger FUEL SYSTEM Sequential multipoint fuel injection FUEL Spec 100 octane unleaded racing gas sale





Porsche LMP2 Engine
Technical Specifications ENGINE CONFIGURATION 6 cylinder Porsche boxer SIZE 3795 cc BORE AND STROKE 76.4mm stroke 102.7mm bore HORSEPOWER 510 bhp @ 7,500 TORQUE 435 N/meters @ 7,500 RED LINE 9,000 rpm INDUCTION Naturally aspirated ENGINE MANAGEMENT Bosch MS 3.1 DATA Motec display w/data recording LAP TIMING lap trigger w/display recording INTAKE 6 individual throttle valves BATTERY 12v 50 ah ALTERNATOR McLaren Electronics 110 amp LUBRICATION Dry sump w/heat exchanger COOLING Water cooled FUEL INJECTION Sequential multi-point Bosch MS 4.0 FUEL Spec 100 octane unleaded racing gas


Source: http://www.dysonracing.com/
AU N EGL is offline  
__________________
"When the fear of death out weighs the thrill of speed, brake." LG
Quote
Old 21 Jan 2007, 22:35 (Ref:1821288)   #2
MulsanneMike
Veteran
 
MulsanneMike's Avatar
 
Join Date: Jun 2001
United States
Posts: 1,831
MulsanneMike has a real shot at the podium!MulsanneMike has a real shot at the podium!MulsanneMike has a real shot at the podium!MulsanneMike has a real shot at the podium!
The LMP2 engine is the 3.4 liter motor. The DP motor is the 3.8, they've gotten them flip-flopped.
MulsanneMike is offline  
Quote
Old 21 Jan 2007, 23:24 (Ref:1821322)   #3
chernaudi
Veteran
 
chernaudi's Avatar
 
Join Date: Dec 2006
United States
Mansfield, Ohio
Posts: 8,827
chernaudi has a real shot at the championship!chernaudi has a real shot at the championship!chernaudi has a real shot at the championship!chernaudi has a real shot at the championship!chernaudi has a real shot at the championship!chernaudi has a real shot at the championship!
In Grand Am, the engines have to be largely production based to suit the regs(NASCAR is the majority owner of GA, and also help the SCCA sanction the series). Porsche designed the 3.4 V8 to be a purpose built engine, and because they felt that something new was needed for a prototype(the Boxer 6 couldn't actually be stress mounted to the chassis, and was relatively heavy).
chernaudi is offline  
Quote
Old 21 Jan 2007, 23:40 (Ref:1821333)   #4
The359
Veteran
 
The359's Avatar
 
Join Date: Apr 2003
United States
Pennsylvania, USA
Posts: 2,437
The359 should be qualifying in the top 10 on the grid
Was Porsche's switch from the 3.99L Flat-6 to a 3.8L V8 just announced?
The359 is offline  
__________________
Nulla Tenaci Invia Est Via
Quote
Old 21 Jan 2007, 23:47 (Ref:1821338)   #5
AU N EGL
Veteran
 
AU N EGL's Avatar
 
Join Date: Jul 2006
United States
Raleigh, North Carolina
Posts: 4,418
AU N EGL should be qualifying in the top 10 on the gridAU N EGL should be qualifying in the top 10 on the grid
Quote:
Originally Posted by The359
Was Porsche's switch from the 3.99L Flat-6 to a 3.8L V8 just announced?
This is the protype engine, not the flat 6 in the 996 & 997s
AU N EGL is offline  
__________________
"When the fear of death out weighs the thrill of speed, brake." LG
Quote
Old 22 Jan 2007, 00:00 (Ref:1821342)   #6
The359
Veteran
 
The359's Avatar
 
Join Date: Apr 2003
United States
Pennsylvania, USA
Posts: 2,437
The359 should be qualifying in the top 10 on the grid
I know, the Daytona Prototypes use a 3.99L Flat-6 according to the engine list I just read.

http://www.grandamerican.com/CONTENT.../DPEngines.pdf

Last edited by The359; 22 Jan 2007 at 00:02.
The359 is offline  
__________________
Nulla Tenaci Invia Est Via
Quote
Old 22 Jan 2007, 00:37 (Ref:1821360)   #7
Danske
Veteran
 
Join Date: Jan 2004
Posts: 932
Danske should be qualifying in the top 10 on the grid
The Grand-Am engine is allowed to be up to 3.99L but they're only running it at 3.8L.
Danske is offline  
Quote
Old 22 Jan 2007, 01:11 (Ref:1821375)   #8
The359
Veteran
 
The359's Avatar
 
Join Date: Apr 2003
United States
Pennsylvania, USA
Posts: 2,437
The359 should be qualifying in the top 10 on the grid
OK, but it is a V8 or a Flat-6?
The359 is offline  
__________________
Nulla Tenaci Invia Est Via
Quote
Old 22 Jan 2007, 01:56 (Ref:1821397)   #9
MulsanneMike
Veteran
 
MulsanneMike's Avatar
 
Join Date: Jun 2001
United States
Posts: 1,831
MulsanneMike has a real shot at the podium!MulsanneMike has a real shot at the podium!MulsanneMike has a real shot at the podium!MulsanneMike has a real shot at the podium!
Quote:
Originally Posted by The359
OK, but it is a V8 or a Flat-6?
6-cylinder. The above engine descriptions are flipped, the 3.4 V8 descrip should be with the LMP2 heading and vice versa.
MulsanneMike is offline  
Quote
Old 22 Jan 2007, 02:01 (Ref:1821400)   #10
JHamilton
Veteran
 
JHamilton's Avatar
 
Join Date: Nov 2006
United States
Atlanta, GA
Posts: 4,475
JHamilton is the undisputed Champion of the World!JHamilton is the undisputed Champion of the World!JHamilton is the undisputed Champion of the World!JHamilton is the undisputed Champion of the World!JHamilton is the undisputed Champion of the World!JHamilton is the undisputed Champion of the World!JHamilton is the undisputed Champion of the World!JHamilton is the undisputed Champion of the World!JHamilton is the undisputed Champion of the World!JHamilton is the undisputed Champion of the World!JHamilton is the undisputed Champion of the World!
Quote:
Originally Posted by MulsanneMike
6-cylinder. The above engine descriptions are flipped, the 3.4 V8 descrip should be with the LMP2 heading and vice versa.
Ha! I was confused myself reading that. I know I've heard both engines and one sounds distinctly like a flat six.
JHamilton is online now  
Quote
Old 22 Jan 2007, 04:16 (Ref:1821422)   #11
broadrun96
Veteran
 
broadrun96's Avatar
 
Join Date: Mar 2005
United States
Posts: 11,215
broadrun96 is the undisputed Champion of the World!broadrun96 is the undisputed Champion of the World!broadrun96 is the undisputed Champion of the World!broadrun96 is the undisputed Champion of the World!broadrun96 is the undisputed Champion of the World!broadrun96 is the undisputed Champion of the World!broadrun96 is the undisputed Champion of the World!broadrun96 is the undisputed Champion of the World!broadrun96 is the undisputed Champion of the World!broadrun96 is the undisputed Champion of the World!broadrun96 is the undisputed Champion of the World!
Quote:
Originally Posted by MulsanneMike
6-cylinder. The above engine descriptions are flipped, the 3.4 V8 descrip should be with the LMP2 heading and vice versa.
I feel alot better now, I thought the LMP2 engine was a V8 but have to defer to the guys who knkow more then me about the specifics. I couldn't imagine the flat 6 keeping up in the world or V8s and turbo 4s.
broadrun96 is offline  
Quote
Old 22 Jan 2007, 05:06 (Ref:1821436)   #12
chewymonster
Veteran
 
Join Date: Oct 2006
Posts: 626
chewymonster should be qualifying in the top 10 on the grid
Yep, the order is wrong.

The DP engine and the ALMS GT 2 engines are probably somewhat related. The LMP 2 engine and the DP engine are not even close to being similar.
chewymonster is offline  
Quote
Old 22 Jan 2007, 16:31 (Ref:1821808)   #13
Danske
Veteran
 
Join Date: Jan 2004
Posts: 932
Danske should be qualifying in the top 10 on the grid
Just to be perfectly clear:

(both with restrictions)
DP: 3.8L, flat-6, 510hp, based on the production engine
LMP2: 3.4L, V8, 503hp, desgined from scratch
Danske is offline  
Quote
Old 22 Jan 2007, 20:30 (Ref:1822096)   #14
broadrun96
Veteran
 
broadrun96's Avatar
 
Join Date: Mar 2005
United States
Posts: 11,215
broadrun96 is the undisputed Champion of the World!broadrun96 is the undisputed Champion of the World!broadrun96 is the undisputed Champion of the World!broadrun96 is the undisputed Champion of the World!broadrun96 is the undisputed Champion of the World!broadrun96 is the undisputed Champion of the World!broadrun96 is the undisputed Champion of the World!broadrun96 is the undisputed Champion of the World!broadrun96 is the undisputed Champion of the World!broadrun96 is the undisputed Champion of the World!broadrun96 is the undisputed Champion of the World!
Quote:
Originally Posted by Danske
Just to be perfectly clear:

(both with restrictions)
DP: 3.8L, flat-6, 510hp, based on the production engine
LMP2: 3.4L, V8, 503hp, desgined from scratch
Assuming the V8 reaches that 500 hp at slightly lower rpm and with more torque?
broadrun96 is offline  
Quote
Old 22 Jan 2007, 20:55 (Ref:1822129)   #15
Danske
Veteran
 
Join Date: Jan 2004
Posts: 932
Danske should be qualifying in the top 10 on the grid
Quote:
Originally Posted by broadrun96
Assuming the V8 reaches that 500 hp at slightly lower rpm and with more torque?
By the Dyson website and original post:

DP: 510 bhp @ 7,500 ; 435 N/meters @ 7,500 ; redline 9000rpm
LMP2: 503 bhp at 10,300 ; 273 ft lb at 7,500

We obviously have some unit problems there. How many pounds per 1/meter? (<-joke) The 9K redline on the DP engine is also a lie.
Danske is offline  
Quote
Old 22 Jan 2007, 20:57 (Ref:1822133)   #16
EuropaBambaataa
Racer
 
Join Date: Nov 2006
Portugal
Posts: 107
EuropaBambaataa should be qualifying in the top 10 on the grid
That's 370 Nm for the LMP2 engine.
EuropaBambaataa is offline  
__________________
Europa Bambaataa

I like electronic boom-boom-boom sounds. So what?
Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Are there any differnces between a Porsche carerra cup Porsche and GT3 class Porsche? SALEEN S7R Sportscar & GT Racing 25 6 Feb 2008 21:06
How superior are turbocharged engines compaired to NA engines in sportscar racing? chernaudi Sportscar & GT Racing 16 27 Dec 2006 18:07


All times are GMT. The time now is 22:48.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Original Website Copyright © 1998-2003 Craig Antil. All Rights Reserved.
Ten-Tenths Motorsport Forums Copyright © 2004-2021 Royalridge Computing. All Rights Reserved.
Ten-Tenths Motorsport Forums Copyright © 2021-2022 Grant MacDonald. All Rights Reserved.