Notices
944 Turbo and Turbo-S Forum 1982-1991
Sponsored by:
Sponsored by: Clore Automotive

video from yesterdays trackday

Thread Tools
 
Search this Thread
 
Old 07-27-2008, 08:16 AM
  #1  
anders44
Three Wheelin'
Thread Starter
 
anders44's Avatar
 
Join Date: Feb 2007
Location: Norway
Posts: 1,324
Likes: 0
Received 0 Likes on 0 Posts
Default video from yesterdays trackday

http://www.youtube.com/watch?v=sbzg7KDpTnU

videocar is a 996 GT2, with 550 hp, sticky tires for both of us

I need to loosen the rear some more as its still a bit "jumpy" , and get the damn LSD in so I can accelerate more out of the turns, the 235 front, and 295 rear combo also needs more brakes to the rear.

(im the burgundy 944)
Old 07-27-2008, 09:31 AM
  #2  
dillon410021
Race Car
 
dillon410021's Avatar
 
Join Date: Dec 2007
Location: LaPorte, IN 46350
Posts: 3,840
Likes: 0
Received 10 Likes on 10 Posts
Default

nice
Old 07-27-2008, 09:37 AM
  #3  
black944 turbo
Rennlist Member
 
black944 turbo's Avatar
 
Join Date: Mar 2003
Location: Charlotte
Posts: 4,261
Received 30 Likes on 20 Posts
Default

You in a turbo? Nice one.
Old 07-27-2008, 09:37 AM
  #4  
333pg333
Rennlist Member
 
333pg333's Avatar
 
Join Date: Feb 2006
Location: Australia
Posts: 18,916
Received 96 Likes on 79 Posts
Default

Looks pretty quick Anders but also not a track that would suit the 996 either. I thought you had one of our Aussie LSDs in by now? You definitely need to get that in for sure and I can see you rear bouncing around. Have you re-indexed you T-bars? Looks like your rear is sitting a bit high? What engine/mods do you have in? That's quite a big difference between front and back, do you get understeer?
Old 07-27-2008, 12:18 PM
  #5  
DanR
Drifting
 
DanR's Avatar
 
Join Date: Jun 2007
Posts: 3,464
Likes: 0
Received 0 Likes on 0 Posts
Default

nice vid!
Old 07-27-2008, 04:29 PM
  #6  
anders44
Three Wheelin'
Thread Starter
 
anders44's Avatar
 
Join Date: Feb 2007
Location: Norway
Posts: 1,324
Likes: 0
Received 0 Likes on 0 Posts
Default

I have had issues with massive OVERSTEER actually, I have the 968 m030's at the loosest now, was middle on previous test day. before next trackday, I will adjust bump/rebound some more. it's not to high at all, if you lower the car to much, you will get wrong angles at A arms, without longer pins. I could lower the rear a bit, but haveing the rear to low, contrary to front would be bad I think? it was 34-35C in the shade (aprox 95fahrenheit) which is a lot for our country.

I will adjust down the rear camber a bit to aprox 1.5 on both, and up the fronts from 1.5 to 2.5 degrees negative. I think that should be good up front, im running solid bushings, and uniball tops etc, so not much deflection

I have a 40%, a 65%, and a 80%... the 65% and 80% are going in soon, I have the trannies open and just need to put them back together, rpelaced all the bearings, seals etc.

the 40% just needs some oil and it should be ready. will probably just slap that in there before the next test on the 16'th of august.

the 996 gt2 is rigged very good with aggresive angles for the short tracks. he's getting a new intrax 3 way, and sequential shifter before the 16th.. we will fight again then!

just bought a ls1 on thursday btw.. also buying a few ls3's (we will make 3 cars with them at our garage it seems) the ls1 is to show the DMV, and the ls3 is then swapped in voila.. 500rwhp.. vrooom
Old 07-27-2008, 04:40 PM
  #7  
DVC
Burning Brakes
 
DVC's Avatar
 
Join Date: Oct 2003
Location: USA
Posts: 1,005
Likes: 0
Received 0 Likes on 0 Posts
Default

Nice vid. Are you staying fly by wire with the LS3?
Old 07-27-2008, 04:55 PM
  #8  
anders44
Three Wheelin'
Thread Starter
 
anders44's Avatar
 
Join Date: Feb 2007
Location: Norway
Posts: 1,324
Likes: 0
Received 0 Likes on 0 Posts
Default

haven't decided yet, wont get anything approved until over the winter... so no rush to figure out the details. but its tempting, then I can have cruisecontrol as well!
Old 07-27-2008, 05:10 PM
  #9  
95ONE
Race Car
 
95ONE's Avatar
 
Join Date: Sep 2005
Location: TEXAS
Posts: 4,247
Likes: 0
Received 0 Likes on 0 Posts
Default

lower the rear. more than the fronts a little get the weight back in those tires. don't change anything till then
Old 07-27-2008, 05:18 PM
  #10  
scv8
Intermediate
 
scv8's Avatar
 
Join Date: Nov 2006
Posts: 42
Likes: 0
Received 0 Likes on 0 Posts
Default

You don't need an electronic throttle for CC, I'm using the stock 944 cruise with my LS2.
Old 07-27-2008, 06:06 PM
  #11  
shiners780
Rennlist Member
 
shiners780's Avatar
 
Join Date: Mar 2005
Posts: 5,008
Likes: 0
Received 3 Likes on 3 Posts
Default

Originally Posted by 95ONE
lower the rear. more than the fronts a little get the weight back in those tires. don't change anything till then
Lowering the rear will not put more weight on the rear tires. Total rear weight is constant until some component of the car is physically moved (or added or removed.)
Old 07-27-2008, 09:11 PM
  #12  
95ONE
Race Car
 
95ONE's Avatar
 
Join Date: Sep 2005
Location: TEXAS
Posts: 4,247
Likes: 0
Received 0 Likes on 0 Posts
Default

disagree.
I.e corner balancing
Old 07-27-2008, 09:42 PM
  #13  
shiners780
Rennlist Member
 
shiners780's Avatar
 
Join Date: Mar 2005
Posts: 5,008
Likes: 0
Received 3 Likes on 3 Posts
Default

Originally Posted by 95ONE
disagree.
I.e corner balancing
Corner balancing does not change the total rear weight. It is a basic chassis setup fact.

Since you won't believe me, I did a google search of "corner balancing". Second hit is from Elephant Racing http://www.elephantracing.com/techto...nerbalance.htm which I quote

"As you consider which wheel to adjust keep in mind the following set of rules:

Rule 1 - You can't shift total weight between axles, LF + RF = Constant "

Read all the search results, they will all say the same thing.

Still disagree?
Old 07-27-2008, 09:45 PM
  #14  
anders44
Three Wheelin'
Thread Starter
 
anders44's Avatar
 
Join Date: Feb 2007
Location: Norway
Posts: 1,324
Likes: 0
Received 0 Likes on 0 Posts
Default

cornerweighting our cars is actually ****, since the fuellevel changes everything.

it can now fly as well
Old 07-27-2008, 10:49 PM
  #15  
95ONE
Race Car
 
95ONE's Avatar
 
Join Date: Sep 2005
Location: TEXAS
Posts: 4,247
Likes: 0
Received 0 Likes on 0 Posts
Default

ok. I don't disagree with your weight change argument...but

reasons why he should lower it...
right now he has
roll center is lower (bad)
center of gravity higher.
trailing arm unhappy. etc.
needs to lower the rear


Quick Reply: video from yesterdays trackday



All times are GMT -3. The time now is 08:01 AM.