Bracket Racing
Thread Starter
Instructor
Joined: Jun 2014
Posts: 129
Likes: 3
From: Atlanta area Georgia
Bracket Racing
Need guidance: 96 collectors addition/LT1 w/auto trans.
Times will vary in the quarter mile by plus or minus 3 hundredth of a
second. Appears to be random as to when it occurs. At first it seemed
to change with the temp and humidity. ex temp and humidity goes up
the car slows down, temp and humidity goes down the car runs faster.
today the temp and humidity between runs went way up and the car
actually ran quicker.
I am currently launching off idle. Any suggestions out there?
Tks Putz
Times will vary in the quarter mile by plus or minus 3 hundredth of a
second. Appears to be random as to when it occurs. At first it seemed
to change with the temp and humidity. ex temp and humidity goes up
the car slows down, temp and humidity goes down the car runs faster.
today the temp and humidity between runs went way up and the car
actually ran quicker.
I am currently launching off idle. Any suggestions out there?
Tks Putz
Race Director
Joined: Apr 2003
Posts: 17,699
Likes: 1,667
From: moraga ca
Need guidance: 96 collectors addition/LT1 w/auto trans.
Times will vary in the quarter mile by plus or minus 3 hundredth of a
second. Appears to be random as to when it occurs. At first it seemed
to change with the temp and humidity. ex temp and humidity goes up
the car slows down, temp and humidity goes down the car runs faster.
today the temp and humidity between runs went way up and the car
actually ran quicker.
I am currently launching off idle. Any suggestions out there?
Tks Putz
Times will vary in the quarter mile by plus or minus 3 hundredth of a
second. Appears to be random as to when it occurs. At first it seemed
to change with the temp and humidity. ex temp and humidity goes up
the car slows down, temp and humidity goes down the car runs faster.
today the temp and humidity between runs went way up and the car
actually ran quicker.
I am currently launching off idle. Any suggestions out there?
Tks Putz
Thread Starter
Instructor
Joined: Jun 2014
Posts: 129
Likes: 3
From: Atlanta area Georgia
4 degrees and the car ran 3 hundreds quicker-not slower. and it was
reflected in the 60 foot time.
in the past with very little change in temp it has run as much as
4 hundreds either way. I use a basic temp/humidity gauge and
my friend has a one of those high tech weather stations. We have
compared the two and there is very little if no difference in readings.
Is it possible that I have a traction problem? Think I will sit down
tomorrow with all my slips from the last four races.
Appreciate your input Putz
Safety Car
Joined: Sep 2001
Posts: 4,154
Likes: 553
From: Glenbeulah Wi
Need guidance: 96 collectors addition/LT1 w/auto trans.
Times will vary in the quarter mile by plus or minus 3 hundredth of a
second. Appears to be random as to when it occurs. At first it seemed
to change with the temp and humidity. ex temp and humidity goes up
the car slows down, temp and humidity goes down the car runs faster.
today the temp and humidity between runs went way up and the car
actually ran quicker.
I am currently launching off idle. Any suggestions out there?
Tks Putz
Times will vary in the quarter mile by plus or minus 3 hundredth of a
second. Appears to be random as to when it occurs. At first it seemed
to change with the temp and humidity. ex temp and humidity goes up
the car slows down, temp and humidity goes down the car runs faster.
today the temp and humidity between runs went way up and the car
actually ran quicker.
I am currently launching off idle. Any suggestions out there?
Tks Putz
Thread Starter
Instructor
Joined: Jun 2014
Posts: 129
Likes: 3
From: Atlanta area Georgia
So I think that I need to go to a test and tune.
As far a staging the same, I do, but having street tires I go through
the water box and do a very light burn out. I also practice what has
been refered to as bump an inch. So that I just barely turn on the
stage light.
A thought though, I wonder is these massive 255 front tires are carrying
some water and laying it down in front of the rear tires????
Question #2 fuel injection is apparently very sensitive to temp.
I don't care about more horse power, I want to be consistent.
Will a throttle body by pass tube yield more consistency?
Will a MAF housing of nylon instead of aluminum yield more
consistency ?
Both of these items will give slight gains in horse power and torque,
but what about consistency?????
Thanks for all of your Help Pr. Putz
