My race-car project: 924S/931 "Gulf"
09-17-2013 | 04:24 AM
#62
Thread Starter
Three Wheelin'
Joined: Jul 2005
Posts: 1,631
Likes: 17
From: Estonia
The battery died and I decided to gut him and give him a new life using modern technology:
Went to the dyno on saturday, learned that the compressor is too small
Because raising the boost did not result in higher hp.
But at 0.8 bars (spiking to 0.9 on spoolup) results were not too bad, ~270 hp and 370 Nm.
Here's the graph (power is rwkW and rwNm). I had few runs where max power was ~5-6 hp more and few runs where max torque was also 5-6Nm more but counted those out as measuring errors.
And here's a short vid of the one run:
http://www.youtube.com/watch?v=Rj8UK...ature=youtu.be
Car is quite fast for track even with this combo, easiest way to gain power is to go E85. I will decide during winter.
Went to the dyno on saturday, learned that the compressor is too small
Because raising the boost did not result in higher hp.But at 0.8 bars (spiking to 0.9 on spoolup) results were not too bad, ~270 hp and 370 Nm.
Here's the graph (power is rwkW and rwNm). I had few runs where max power was ~5-6 hp more and few runs where max torque was also 5-6Nm more but counted those out as measuring errors.
And here's a short vid of the one run:
http://www.youtube.com/watch?v=Rj8UK...ature=youtu.be
Car is quite fast for track even with this combo, easiest way to gain power is to go E85. I will decide during winter.
10-07-2013 | 05:04 AM
#65
Thread Starter
Three Wheelin'
Joined: Jul 2005
Posts: 1,631
Likes: 17
From: Estonia
Since the weather was perfect on Saturday (sunny and 14C) I went to check the performance of Gulf with RaceLogic Driftbox despite a slight hangover. Results were quite good, I think air was cool enough for turbocharger (which makes it even more clear that compressor is at the edge of its efficiency, otherwise it would not matter that much) as the car ran faster than before.
Too bad the tarmac was also cold which meant that grip was not the best.
Results:
0-60 km/h 3.0 s
0-100 km/h 5.1 s
400m time 12.9 s
400m speed 181 km/h
Too bad the tarmac was also cold which meant that grip was not the best.
Results:
0-60 km/h 3.0 s
0-100 km/h 5.1 s
400m time 12.9 s
400m speed 181 km/h
10-22-2013 | 04:21 AM
#67
Thread Starter
Three Wheelin'
Joined: Jul 2005
Posts: 1,631
Likes: 17
From: Estonia
Went to the racetrack on saturday, first time with current setup. Car felt quite ok, but I need more track time to get confidence with the car and max out the limits.
Sun was shining, but temperature was just 5C and seems that engine gained some power with cold weather.
The BMW 2002 that blasts by is equipped with 700+ hp 2JZ engine, its prime goal is to be a drift car but owner takes it to racetrack occasionally. Orange BMW E30 has 600+hp AWD, both drive on race slicks.
Gustaf (Duke in Rennlist) was also in that event in his white 951 beast, set the fastest time in Modified class Congrats to him!
Here's a vid of a lap (forgot to charge GoPro battery and it died when video ends):
Sun was shining, but temperature was just 5C and seems that engine gained some power with cold weather.
The BMW 2002 that blasts by is equipped with 700+ hp 2JZ engine, its prime goal is to be a drift car but owner takes it to racetrack occasionally. Orange BMW E30 has 600+hp AWD, both drive on race slicks.
Gustaf (Duke in Rennlist) was also in that event in his white 951 beast, set the fastest time in Modified class
Congrats to him!Here's a vid of a lap (forgot to charge GoPro battery and it died when video ends):
