Page 1 of 2 12 LastLast
Results 1 to 20 of 24

slower at track...

This is a discussion on slower at track... within the Drag Racing forums, part of the Racing Forums category; when i had only a slp loudmouth catback done to the car the fastest track time a ran was 12.8 ...

  1. #1
    Just a farmboy V8MUSCLE's Avatar
    Join Date
    Jun 2007
    Location
    Montpelier, VA
    Age
    30
    Posts
    518

    Pewter
    2000 Pontiac Trans Am

    slower at track...

    when i had only a slp loudmouth catback done to the car the fastest track time a ran was 12.8 at 109 with a 2.1 60'. with Michelin pilot sport 245/50/16 with the original rims.

    i now have 275/40/17 sumitomo htrz on black machined c6-zo6 wheels, full exhaust but am still untuned. new plugs,nkg tr55's gaped to whatever mr. luos said to gap em at .055 if i remember correctly, new msd wires, fresh fluids oil/trans/diff/coolant/wiper/power steering/headlight... the fastest i could turn out was 13.5 at 102 with a 2.3 60' and that was flatfooting it all the way down the track... the others were 13.7-13.8 trapping 98-100 with 2.3 60'

    the whole tire/rim when weighs a little more than the originals, maybe 8 lbs each, but i cant imagine it slowing me down that much.

    i checked compression and each was where they were when i got the car.

    the only other thing i can think of is ive been using sarges voodoo 2cycle oil in the gas. 1oz per 5 gallons. running shell v power.

    the weather was pretty close to the same, maybe a little hotter but it was only 87, night runs.

    what gives...

  2. #2
    King 0f n00bz shady milkman's Avatar
    Join Date
    Jan 2006
    Location
    Shepherd, Michigan
    Age
    29
    Posts
    11,775

    blacker than wesleysnipes
    98' trans am

    sumitomo tires suck dick bad...that is your problem ...id change that and see what you run..however with full exhaust you should have picked something up.


    bad track prep, weather changes (aka humidity) all play a factor

  3. #3
    Just a farmboy V8MUSCLE's Avatar
    Join Date
    Jun 2007
    Location
    Montpelier, VA
    Age
    30
    Posts
    518

    Pewter
    2000 Pontiac Trans Am

    it didnt feel like i spun much if at all, im launching at 2500, a little higher than i was with the Michelins. yea, everything plays a factor, but a full second, i could understand a half second at the most thats a little much isnt it?

  4. #4
    King 0f n00bz shady milkman's Avatar
    Join Date
    Jan 2006
    Location
    Shepherd, Michigan
    Age
    29
    Posts
    11,775

    blacker than wesleysnipes
    98' trans am

    yeah it is. but if track prep was shit also..

  5. #5
    Just a farmboy V8MUSCLE's Avatar
    Join Date
    Jun 2007
    Location
    Montpelier, VA
    Age
    30
    Posts
    518

    Pewter
    2000 Pontiac Trans Am

    the people i was with were running a bit slower than usual, but nowhere near as much as me. i kinda looked like a douche bag cause i was runnnig my mouth predicting a 12.6-.7 and ran a 13.8. he has a a4 camaro that usually runs 13.4 and was running 13.6-.7.

  6. #6
    Just a farmboy V8MUSCLE's Avatar
    Join Date
    Jun 2007
    Location
    Montpelier, VA
    Age
    30
    Posts
    518

    Pewter
    2000 Pontiac Trans Am

    im a m6, forgot to mention that earlier.

  7. #7
    King 0f n00bz shady milkman's Avatar
    Join Date
    Jan 2006
    Location
    Shepherd, Michigan
    Age
    29
    Posts
    11,775

    blacker than wesleysnipes
    98' trans am

    well add heavier rims and shitty tires and it is understandable ...especially considering you were dumping higher than normal

  8. #8
    Just a farmboy V8MUSCLE's Avatar
    Join Date
    Jun 2007
    Location
    Montpelier, VA
    Age
    30
    Posts
    518

    Pewter
    2000 Pontiac Trans Am

    dumping at 2500 was my fastest. lower and it bogged, faster it wouldnt catch and id just spin like a douche. i guess ill throw the old rims on, i still got some meat on those tires and see what i run on friday.

  9. #9
    King 0f n00bz shady milkman's Avatar
    Join Date
    Jan 2006
    Location
    Shepherd, Michigan
    Age
    29
    Posts
    11,775

    blacker than wesleysnipes
    98' trans am

    Quote Originally Posted by V8MUSCLE View Post
    dumping at 2500 was my fastest. lower and it bogged, faster it wouldnt catch and id just spin like a douche. i guess ill throw the old rims on, i still got some meat on those tires and see what i run on friday.
    sounds like a plan.

  10. #10
    Moderator 35th-ANV-SS's Avatar
    Join Date
    Oct 2008
    Location
    Wherever life takes me
    Posts
    12,465

    Red
    02 35th LE Camaro SS

    If you were slower by two tenths on your 60' time, that would easily result in a 0.4 slower overall ET.

    Did you try changing your tire pressure at all? And like said, those tires are shit. I've never used them, but have heard pretty much nothing but negative feedback on them from this site.

  11. #11
    Just a farmboy V8MUSCLE's Avatar
    Join Date
    Jun 2007
    Location
    Montpelier, VA
    Age
    30
    Posts
    518

    Pewter
    2000 Pontiac Trans Am

    i aired them down to 25. they hook a little better than the michilins i had, but they are also wider. im not breaking loose on any of the shifts, a chirp in 2nd and 3rd, thats it. with the michilins if i launched at 2500 i would just sit there and spin. the sumitomos as soon as i start to move mash the gas and it hooks. the people i was with said i wasnt spinning much if any.

  12. #12
    Moderator 35th-ANV-SS's Avatar
    Join Date
    Oct 2008
    Location
    Wherever life takes me
    Posts
    12,465

    Red
    02 35th LE Camaro SS

    Well if you had a 2.3 60' time either you were a) spinning or b) you car was bogging down badly.

  13. #13
    Just a farmboy V8MUSCLE's Avatar
    Join Date
    Jun 2007
    Location
    Montpelier, VA
    Age
    30
    Posts
    518

    Pewter
    2000 Pontiac Trans Am

    ill know a little more on friday, im gonna take the michilins on the old rims and see what they can do.

  14. #14
    BANGIN GEARS>STAB N STEER BLK2KSS's Avatar
    Join Date
    Nov 2009
    Location
    Jacksonville FL
    Age
    34
    Posts
    855

    TRIPLE BLACK
    2000 CAMARO SS M6 #2100

    Quote Originally Posted by 35th-ANV-SS View Post
    Well if you had a 2.3 60' time either you were a) spinning or b) you car was bogging down badly.
    I concur

  15. #15
    Member rkvette's Avatar
    Join Date
    Apr 2010
    Location
    northeastern pa.
    Posts
    175

    victory red
    2007 zo6

    why not try drag radials, on your old lighter wheels !! ? also get the drag tires a little shorter/not as tall /to help your rear gear /slightly lower, wont hurt !! rkvette

  16. #16
    Slow'er'Ass Mr. Luos's Avatar
    Join Date
    Aug 2005
    Location
    Thornton, CO
    Posts
    23,785

    Red Tint Jewelcoat
    2008 Trailblazer SS

    Weight in the wheels is HUGE!
    It is rolling resistance. 8 pounds per wheel is enough for damn near a tenth.

    And yeah....SumiHomo's suck. I have them on the back of mine right now. It is like driving on ice.

  17. #17
    King 0f n00bz shady milkman's Avatar
    Join Date
    Jan 2006
    Location
    Shepherd, Michigan
    Age
    29
    Posts
    11,775

    blacker than wesleysnipes
    98' trans am

    Quote Originally Posted by Mr. Luos View Post
    Weight in the wheels is HUGE!
    It is rolling resistance. 8 pounds per wheel is enough for damn near a tenth.

    And yeah....SumiHomo's suck. I have them on the back of mine right now. It is like driving on ice.
    sumihomo ...i didnt know you had them on your car....im sorry

  18. #18
    Slow'er'Ass Mr. Luos's Avatar
    Join Date
    Aug 2005
    Location
    Thornton, CO
    Posts
    23,785

    Red Tint Jewelcoat
    2008 Trailblazer SS

    Quote Originally Posted by shady milkman View Post
    sumihomo ...i didnt know you had them on your car....im sorry
    Just to get through the next month or so....then the car gets parked.

    Will be burning them off soon....

  19. #19
    Moderator Firebirdjones's Avatar
    Join Date
    May 2006
    Location
    Arizona
    Posts
    12,552
    Quote Originally Posted by V8MUSCLE View Post
    when i had only a slp loudmouth catback done to the car the fastest track time a ran was 12.8 at 109 with a 2.1 60'. with Michelin pilot sport 245/50/16 with the original rims.

    i now have 275/40/17 sumitomo htrz on black machined c6-zo6 wheels, full exhaust but am still untuned. new plugs,nkg tr55's gaped to whatever mr. luos said to gap em at .055 if i remember correctly, new msd wires, fresh fluids oil/trans/diff/coolant/wiper/power steering/headlight... the fastest i could turn out was 13.5 at 102 with a 2.3 60' and that was flatfooting it all the way down the track...
    You say you are launcing harder now, without spin, and hooking better with the new wheels/tires, but your difference in 60 foot times aren't showing that.

    Yes the weight in wheels are a double whammy. You have additional weight, but that's not just dead weight, it's also rotational mass, so it hits you twice as hard. I don't see a full second difference though.

    There is so much that could be going on it's almost impossible to nail it down from the internet.

    But the first things that come to my mind for one,,,,DA numbers. They change from 1 hour to the next and are never the same from day to day. Without knowing them, it's impossible to compare track times. You say your temps might have been the same, but that doesn't account for the humidity, dew points, (amount of moisture in the air) etc...can change the DA a couple thousand feet for any given temp range.

    Other things that might be going on,,,possibly fuel pump getting weak, low fuel pressure?? Or any number of other minor mechanical issues. Or like has been mentioned, track prep?

    Frankly, I wouldn't even worry about it. Make your changes and experiment. Have some fun.

  20. #20
    Member c5z28's Avatar
    Join Date
    Apr 2008
    Location
    Bay Area
    Posts
    8,120

    On your ass flashing
    my highbeams

    I lost .2et going from my 16's to 18" wheels. Circumference and rotational mass make a huge difference. You think all those homeboys with the 22" donks are any faster?

Page 1 of 2 12 LastLast

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Why am I slower?
    By joedude02 in forum Drag Racing
    Replies: 22
    Last Post: 12-10-2009, 08:07 PM
  2. Does 18's = SLOWER CAR?
    By WS6ICK2K in forum Wheels and Tires
    Replies: 35
    Last Post: 01-29-2008, 06:53 PM
  3. going slower
    By silverz28camaro in forum Automatic Transmission
    Replies: 1
    Last Post: 10-18-2006, 10:37 AM
  4. car seems slower
    By wayfastws6 in forum General Help
    Replies: 1
    Last Post: 05-25-2006, 06:24 PM
  5. slower car..?
    By Snake Eater in forum External Engine
    Replies: 13
    Last Post: 01-11-2006, 03:59 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •