996 GT3 4 Liter
12-11-2011, 01:55 AM
#226
Rennlist Member
Thread Starter
The monoballs will make the ride more jarring, but it shouldn't sacrifice the car's ability to dampen street bumps and remain useable on the street. I mean, the RS 4.0 has them. I fear that stiffer valving will really make the car a bear on the street. I'll do a track season as is and see how it goes. Maybe I'll do a moderate bump to 500/600 lb rates in the future.
When I first started this project, my goal was to make the performance as high as possible without sacrificing the cars useability on the street. Faster lap times were never even a consideration. I feel that I am already walking the fine line as it is.
When I first started this project, my goal was to make the performance as high as possible without sacrificing the cars useability on the street. Faster lap times were never even a consideration. I feel that I am already walking the fine line as it is.
12-11-2011, 02:00 AM
#227
Rennlist Member
Thread Starter
Oh, and your Li battery and BBS E88s too. Let me know when.
12-12-2011, 12:49 AM
#229
Rennlist Member
Thread Starter
More suspension work today. Had IPB-Autosport check for bumpsteer and corner balance the car in preparation for alignment on Tuesday.
Setting up the Longacre bump steer gauge.
.008" toe change in 1.25" travel, I'm pretty happy with that.
Scales are setup for corner balancing. There is a special pad that was poured to be perfectly level for this very purpose.
Car is on the scales.
Initial measurement:
Not horrible, but definitely room for improvement. This process is not for the impatient...
Final result. Literally a quarter turn of the RF corner separated 49.5 and 50.4% cross-weights. At this point it was splitting hairs.
The total weight with heavy driver (me @ 226 lbs) was 3276. Car alone was 3050 lbs. Fuel level was slightly above half tank, so the car is less than 3000 lbs on an empty tank.
If a no option 996 GT3 weighs in at 3120 without fuel and I have 50 lbs of roll bar/harnesses, that's ~170 lbs in total weight savings over factory.
I'm happy with the result.
Setting up the Longacre bump steer gauge.
.008" toe change in 1.25" travel, I'm pretty happy with that.
Scales are setup for corner balancing. There is a special pad that was poured to be perfectly level for this very purpose.
Car is on the scales.
Initial measurement:
Not horrible, but definitely room for improvement. This process is not for the impatient...
Final result. Literally a quarter turn of the RF corner separated 49.5 and 50.4% cross-weights. At this point it was splitting hairs.
The total weight with heavy driver (me @ 226 lbs) was 3276. Car alone was 3050 lbs. Fuel level was slightly above half tank, so the car is less than 3000 lbs on an empty tank.
If a no option 996 GT3 weighs in at 3120 without fuel and I have 50 lbs of roll bar/harnesses, that's ~170 lbs in total weight savings over factory.
I'm happy with the result.
12-12-2011, 06:57 AM
#230
Burning Brakes
Hi Serge,
Thanks for an excellent engine build thread
With you sat in the car and half a tank of fuel I thought the corner weights side to side across the front should be as equal as you can get them ? likewise the rears ?
Sorry, perhaps I'm missing something here ?
Thanks for an excellent engine build thread
With you sat in the car and half a tank of fuel I thought the corner weights side to side across the front should be as equal as you can get them ? likewise the rears ?
Sorry, perhaps I'm missing something here ?
12-12-2011, 12:51 PM
#231
Rennlist Member
Thread Starter
The goal of corner balancing is to get equal diagonal weights. So, LF + RR should equal RF + LR. In my case, the two diagonal weights are 1632 and 1644. A 12 pound difference isn't bad at all for a 3000 lb car.
Also, when corner balancing, you should disconnect the swaybar to avoid influence on the loads. Once the corner balancing was done and the suspension settled, the disconnected links slid right on. This indicated that there is no pre-load on the sway bars and adjustable aftermarket links are not necessary.
Also, when corner balancing, you should disconnect the swaybar to avoid influence on the loads. Once the corner balancing was done and the suspension settled, the disconnected links slid right on. This indicated that there is no pre-load on the sway bars and adjustable aftermarket links are not necessary.
12-14-2011, 01:40 PM
#237
Rennlist Member
Thread Starter
This reminds me. A girl I hung out with in high school saw a pic of my car on facebook the other week. Last time I saw her I was driving my $500 944 (first car)! I kid you not, she posts, "Wow Serge, you upgraded. I just had a dream that I went home with a guy just because he drove a GT3. No 944 dreams though."
Dyno tuning is going to happen as soon as we can get a window at GIAC.
Dyno tuning is going to happen as soon as we can get a window at GIAC.
weet Haysoous man! Give us some video already ... Uhum please!
12-14-2011, 07:10 PM
#240
Nordschleife Master
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This reminds me. A girl I hung out with in high school saw a pic of my car on facebook the other week. Last time I saw her I was driving my $500 944 (first car)! I kid you not, she posts, "Wow Serge, you upgraded. I just had a dream that I went home with a guy just because he drove a GT3. No 944 dreams though."
Dyno tuning is going to happen as soon as we can get a window at GIAC.
Dyno tuning is going to happen as soon as we can get a window at GIAC.