Results 1 to 15 of 15

Thread: Bump Stop Mod

  1. #1
    FAS02SS
    Join Date
    Apr 2006
    Location
    Greenwood Indiana
    Posts
    93

    Pewter
    2002 Camaro SS

    Bump Stop Mod

    I don't have access to the tool to give me TB blade % open, is there any way to do this mod w/o it??

  2. #2
    Member 89LX's Avatar
    Join Date
    May 2006
    Location
    East Coast North Carolina
    Posts
    429

    Navy
    2000 Z28 M6

    This worked for me

    I performed mine when I had the TB out for P&P. I didn't have a meter either. I place my TB perfectly level on the work bench and open the blade. You will see it is less than horizontal before you start removing metal on the stop. I gradually removed metal until the blade appeared slightly less than horizontal position (full open). Do not go over the horizontal plane or you are hosed. Money gifted LS1 owners will probably have a fit with this solution but worked for me.

  3. #3
    FAS02SS
    Join Date
    Apr 2006
    Location
    Greenwood Indiana
    Posts
    93

    Pewter
    2002 Camaro SS

    TB Mod

    Yeah I figured something like that might work, thanks.

  4. #4
    Member jag42420's Avatar
    Join Date
    Aug 2006
    Location
    Kentucky
    Age
    49
    Posts
    524

    Silver
    2002 WS6 Trans Am

    I'd like to try this mod as well. The article I commonly see referenced (http://www.installuniversity.com/ins..._bump_stop.htm) says you need to check the voltage to do this correctly. I would assume that erring on the safe side of 90 degrees (without being able to check voltage) would maybe not be as effective but offer better than stock? Is there anyway to use a voltmeter instead of diagnostic software?

  5. #5
    Member 89LX's Avatar
    Join Date
    May 2006
    Location
    East Coast North Carolina
    Posts
    429

    Navy
    2000 Z28 M6

    The "before and After" pictures on install university is what convenced me to go ahead without the tester and hold short of 90 degrees. I figured it would fall short of the maximum allowed with a meter/tester but better than stock. As you know all these free mods are accumulative in nature and as a result don't feel the results of minor tweaking after one mod. Mine is certainly opening wider than before and that was my mission.

  6. #6
    Member Ripper415's Avatar
    Join Date
    Sep 2005
    Location
    NY
    Age
    38
    Posts
    378

    Pewter
    2002 Camaro SS

    I've been thinking of doing this mod and the port and polish too. About how long did each one take you from start to finish? Since this is my daily driver, I need to figure out if I can do both in the same day, or should I just wait for the weekend. From the limited number of mods I've done on my car already, I've found out that whatever time you assume it will take to complete is usually not enough, especially if it's your first time doing it.
    Last edited by Ripper415; 09-09-2006 at 09:46 AM.

  7. #7
    Member 89LX's Avatar
    Join Date
    May 2006
    Location
    East Coast North Carolina
    Posts
    429

    Navy
    2000 Z28 M6

    I manage to P&P the TB and MAF in two evenings. I suppose it would have been done with a fulls day work. P&P the TB was made pretty fast with a small bench drill press with a sanding drum used. The most time cosuming was probably cutting out the vanes with a hack saw. It was pretty scary to start with (for me) but once started of course pressed on. Like everything else how long has a lot to do with what you want the finished product to look like (smooth, real smooth or slick and near flawless. I would grade mine real smooth. I did not plug with epoxy like some do. Seems a little unnatural and no reported measurable documented gains I could find. I also didn't want the epoxy to come out over time and go down my motor. Good luck

  8. #8
    Member jag42420's Avatar
    Join Date
    Aug 2006
    Location
    Kentucky
    Age
    49
    Posts
    524

    Silver
    2002 WS6 Trans Am

    My SLP lid will be coming tomorrow. I'll be doing the throttle body port & polish then. I'm going to go slow and take some pictures. I'm also going to try and replace the bellows with a smooth hose if i can locate one when I get it off there to size it up.

    I'm not sure of the MAF P&P. It looks a bit more scary. I know it doesn't take much to scramble the sensor...

  9. #9
    Member 89LX's Avatar
    Join Date
    May 2006
    Location
    East Coast North Carolina
    Posts
    429

    Navy
    2000 Z28 M6

    MAF mod not that important?

    Most say the MAF is not that important and stock will support all but the heaviest Mods. Seems like I have read up to 500HP.

  10. #10
    Member jag42420's Avatar
    Join Date
    Aug 2006
    Location
    Kentucky
    Age
    49
    Posts
    524

    Silver
    2002 WS6 Trans Am

    Can anyone tell me if this reader ( http://www.harborfreightusa.com/usa/...o?itemid=94217 ) will read the voltage or degrees described in this article http://www.installuniversity.com/ins..._bump_stop.htm ? It's only $75. I'd consider buying it to use for code reading anyway, but if it would help with a mod, even better.

  11. #11
    Junior Member
    Join Date
    Sep 2006
    Location
    Hampshire, UK
    Age
    48
    Posts
    7

    Red
    2000 Trans-Am

    You could read the voltage with a simple volt meter. you need to not let it read above 4.7V as the PCM will throw a code. I set mine to 4.68volts, I filed down the pump stop then added an adjustment screw.
    Although that OBD scanner may come in handy for other things i wouldn't buy it just to do the throttle body bump stop mod.

  12. #12
    Member jag42420's Avatar
    Join Date
    Aug 2006
    Location
    Kentucky
    Age
    49
    Posts
    524

    Silver
    2002 WS6 Trans Am

    Cool deal. I was wondering about using a voltmeter...

  13. #13
    Junior Member
    Join Date
    Sep 2006
    Location
    Hampshire, UK
    Age
    48
    Posts
    7

    Red
    2000 Trans-Am

    More info on the voltmeter method is in this link, sorry, need to copy and paste as I havn't done enougth posts yet.

    ls1tech.com/forums/showthread.php?t=420817&highlight=writeup

  14. #14
    Member jag42420's Avatar
    Join Date
    Aug 2006
    Location
    Kentucky
    Age
    49
    Posts
    524

    Silver
    2002 WS6 Trans Am

    Thanks.

  15. #15
    Member edbird's Avatar
    Join Date
    Apr 2006
    Location
    hammond Ind
    Posts
    270

    red
    1999 trans am convert

    Here ya go....check this link first before you do this.It's the best write up with the largest pics ever!http://www.ls1tech.com/forums/showth...=bump+stop+mod

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. TB Bump Stop Mod
    By bhunter0830 in forum General Help
    Replies: 9
    Last Post: 09-07-2012, 10:50 AM
  2. Bump stop ar-15
    By bluehawk2000 in forum Gun's & Ammo
    Replies: 5
    Last Post: 03-07-2012, 04:44 PM
  3. WTB bump stop!
    By Justin23454 in forum Parts Wanted / Trade
    Replies: 0
    Last Post: 02-01-2008, 06:27 PM
  4. help with bump stop mod
    By RDS in forum Suspension and Handling
    Replies: 9
    Last Post: 12-16-2006, 09:08 PM
  5. TB Bump Stop Mod ??
    By 98redbird in forum External Engine
    Replies: 0
    Last Post: 12-13-2005, 08:12 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
  •