Drag Racing Tech
Sponsored by:
Sponsored by:

Car won't launch, please help

Thread Tools
 
Search this Thread
 
Old 02-03-2008, 09:07 PM
  #1  
TECH Resident
Thread Starter
iTrader: (11)
 
Twotonefreak's Avatar
 
Join Date: Aug 2004
Location: Southeast of Disorder
Posts: 806
Likes: 0
Received 0 Likes on 0 Posts

Default Car won't launch, please help

Alright guys. I have a 98 ta. Mods in sig. Best time so far is a 12.2@110. That is with the 17's all the way around and a full tank of gas. Also had standard ACDelco plugs in it. Best 60' was 1.739.

Today I head out. Changes since last time. I added Patriot dual springs, NGK TR6 plugs, pulled the front sway bar and was running on Weld 15x3.5" Prostars. Best 60' today, 1.779. Best e.t, 12.368 @110.

No matter what I do this car just doesn't leave as hard as I think it should. Foot braking it netted the best time today, but I feel like something is wrong. Also last time out, the est. da was 709, today, it was 1980 and the corrected et was 12.09@112. Where as the first time's out corrected et was 12.1@110.
Old 02-03-2008, 09:23 PM
  #2  
LS1Tech Co-Founder
iTrader: (34)
 
Pro Stock John's Avatar
 
Join Date: Nov 2001
Location: Chicago, IL
Posts: 44,714
Received 1,163 Likes on 756 Posts

Default

Throw an LS6 intake on there for an easy tenth and a mph first off.

Is the car spinning? Have to isolate whether the car is not (a) leaving hard or (b) you can't hook the power.
Old 02-03-2008, 09:45 PM
  #3  
TECH Addict
iTrader: (76)
 
94'BLKBRD's Avatar
 
Join Date: May 2005
Location: SoCal
Posts: 2,976
Likes: 0
Received 0 Likes on 0 Posts

Default

get some drag radials if you don't have some already
Old 02-03-2008, 10:03 PM
  #4  
12 Second Club
iTrader: (28)
 
patriotformula's Avatar
 
Join Date: Feb 2005
Location: Quad Cities, IA
Posts: 858
Likes: 0
Received 0 Likes on 0 Posts

Default

Wait you added patriot springs without adding a cam? I figure that would kill performance (although looks like you gained mph) Thats definitely overkill for a stock cam... I could be wrong though!
Old 02-04-2008, 12:57 AM
  #5  
TECH Addict
iTrader: (76)
 
94'BLKBRD's Avatar
 
Join Date: May 2005
Location: SoCal
Posts: 2,976
Likes: 0
Received 0 Likes on 0 Posts

Default

I doubt it's the valvesprings
Old 02-04-2008, 01:10 AM
  #6  
10 Second Club
iTrader: (8)
 
Top Fuel's Avatar
 
Join Date: Nov 2001
Location: NW Indiana
Posts: 838
Likes: 0
Received 0 Likes on 0 Posts

Default

Originally Posted by patriotformula
Wait you added patriot springs without adding a cam? I figure that would kill performance (although looks like you gained mph) Thats definitely overkill for a stock cam... I could be wrong though!
it says in his sig he has a TR220 cam
Old 02-04-2008, 01:17 AM
  #7  
Launching!
 
TransFan's Avatar
 
Join Date: Aug 2007
Posts: 240
Likes: 0
Received 0 Likes on 0 Posts
Default

what's the rearend got in it?
Old 02-04-2008, 01:21 AM
  #8  
10 Second Club
iTrader: (8)
 
Top Fuel's Avatar
 
Join Date: Nov 2001
Location: NW Indiana
Posts: 838
Likes: 0
Received 0 Likes on 0 Posts

Default

to the OP, what gear 2.73 or 3.23? what race weight? Get some rear pro stars with some good tires, get an intake, port the tb, get a pulley, get some suspension. If you're staying NA, basically your stall and gear are too small. For your mods,assuming a full weight car, Nittos, and the DA those times (including 60') are decent.
Old 02-04-2008, 08:33 AM
  #9  
TECH Resident
Thread Starter
iTrader: (11)
 
Twotonefreak's Avatar
 
Join Date: Aug 2004
Location: Southeast of Disorder
Posts: 806
Likes: 0
Received 0 Likes on 0 Posts

Default

Sorry I left out what gear. Its a 3.73. With a 1/4 tank of fuel, it weighed 3215.

I had a guy watch for me, and he said it would barely spin them(rolling over about one turn). The guy I had watching said it was hanging the front at full droop.

The one time it did hook and launch hard, it started wheel hopping. I feel its just not leaving as hard as it should, like it doesn't have enough gear. I do plan on spraying it later in the year and that's why I went with the converter I did.
Old 02-04-2008, 11:57 AM
  #10  
Teching In
 
badblkz's Avatar
 
Join Date: Sep 2007
Location: ms
Posts: 23
Likes: 0
Received 0 Likes on 0 Posts
Default

it shows in ur sig all u got is a PHB.. three words.. suspension. suspension. supension that is what u need




All times are GMT -5. The time now is 10:23 AM.