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My DIY 4v s400 Cobra

Discussion in 'The Turbo "Builds" Board' started by GPowrie, Oct 7, 2007.

  1. MustangMitch

    Joined:
    Nov 20, 2006
    VIDS!


    PICS!!

    EVERYTHING!!! lol
     
  2. bdmach1

    Joined:
    Aug 18, 2006
    AWSOME!!!!!!!! :chacha:............can't wait!!!!!!!Bring your camera when you pull it tomorrow, wanna here that S400 scream!!! 8)
     
  3. GPowrie

    Joined:
    May 16, 2005
    I can do the pics thing but the video is over my head, I just not that computer literate. If someone tells me how it is possible. I know my camera does take vid also.
     
  4. MustangMitch

    Joined:
    Nov 20, 2006
    If you make a photobucket account you can upload vids. You can also do the Youtube account thing and be able to post it.
     
  5. GPowrie

    Joined:
    May 16, 2005
    Not a whole lot to report. I am having a small issue blowing off the charge pipe at the throttle body, I think I have that solved now. There is just not enuff of a bead on it to hold the clamp, no biggie. For what ever reason we can not get a good tach signal so the power numbers make no sense. The only thing I have to compare to is another car that was on this machine making mid 700's to the tire took .9 seconds longer to make a pull than this car, so we think it is making more than that. Also the MPH range that we are pulling this car is longer. I have only made it to 22lbs so far so there is 6-8lbs left in it and the a/f is in the low 10's right now. I wil try to get vids tomorrow and hopfully fix the tach signal. If I can not fix the tach the track will tell me how much it is making and be a lot more fun in the process.
     
  6. MustangMitch

    Joined:
    Nov 20, 2006
    OMG more than 700 :chacha:

    Hope everything works out :2thumbs:
     
  7. MustangMitch

    Joined:
    Nov 20, 2006
  8. GPowrie

    Joined:
    May 16, 2005
    Well the car is off the dyno. I had a pretty major issue with the car not wanting to idle or drive low throttle at all. Everyone wanted to change the injectors and I allmost traded for 83's but it ended up not being the problem. Basicly what was happening was there was a very small twich in tps voltage and it was causing the FAST to go in to accel enrich and it would stall the car. Ended up figuring it out and the car runs great now, I can actualy idle it where ever I want. The car did not pick anything up by adding boost not sure what that is about yet, I think it may actualy be intake manifold related. The power was within 10rwhp from 5900-6900 and appeared it would continue like that for a ways. I am going to run the car at the track on Saturday and see how it does as it sits. I know I can add at least 2 more degrees of timing maybee more, I am only at 15 right now. I don't have the dyno sheets infront of me but if memory serves me right it made around 560rwhp on 15lbs and pump gas, don't know the torque as the tach was totaly out to lunch. We had the tach fixed on the race gas pulls and the car made just over 700rwhp and about 570rwtq on 22-23lbs of boost. I went up to 26lbs but nothing happened to power so I am going to try timing at the track. We had another 2 degrees out of it when we went to 26lbs for a total of 13. When we were running on 22lbs adding 1 degree picked up almost 40 to the tire. I know there is more left in the tune I just don't see the reason to waste the tires and fuel anymore.
     
  9. MustangMitch

    Joined:
    Nov 20, 2006
    Sweet numbers man! Cant wait to see what she runs! :2thumbs:
     
  10. SC96COBRA

    Joined:
    May 10, 2007
    Anyway you can post your "street dyno sheet 15 psi"? I would like to compare to mine.
     
  11. GPowrie

    Joined:
    May 16, 2005

    I will try tomorrow. The only thing on the sheet that will make sense is the horse power line, the torque is totaly out to lunch on that pull because of the eratic tack signal.
     
  12. GPowrie

    Joined:
    May 16, 2005

    Thanks, it came up short of the numbers I was expecting but there could be several things going on. The tires were spinning on the dyno to the point that at the end of a pull there was still smoke coming from the wheel wells. The car on the street is even worse, I really need to get the boost controler figured out so the car will be usable. It may be okay on 15lbs but 22 was a joke.
     
  13. tomyb1976

    Joined:
    Aug 27, 2006
    any updates?
     
  14. 8 SEC SVT

    Joined:
    Aug 25, 2005
    Anything???????? :huh: :huh: :huh:
     
  15. SC96COBRA

    Joined:
    May 10, 2007
    yeah, post the dyno sheet :2thumbs:
     
  16. Ackbar00

    Joined:
    May 9, 2003
    Damn, sweet build!
     
  17. Collinsautomotive

    Joined:
    Nov 9, 2007
    Wrong user logged in.
     
  18. GPowrie

    Joined:
    May 16, 2005
    I did get the car to the track for the last t&t day of the year. I only ended up running the 275-40-17 MT radials. The first pass I went off of the foot brake and could not build any boost on the line(or for the first 400ft for that matter), the car ended up going 7.0@110 to the 1/8. The next pass I brought it up to 5lbs on the brake and the car went 1.45 60ft and 6.03@114 on the brakes, I also missed 2nd gear on that pass. I actualy brought the car up to the shop today, I am going to change some things around for the new season. I ended up finding out the turbo has the wrong hot side on it, it's a 1.32 not a 1.10. I am going to pull the converter again and have some more changes made on it. Also I want to work on the intake a little bit to try to get more rpm out of the motor. Oh and put the 80 wheel in the compressor. I think the car should fly on the 17's to boot.


    I will seriously try to work on posting the dyno sheet.


    Here is a small vid of the pass, you can't see the car though so it kinda sucks. I fired the camera man,lol.
    [​IMG]#ad
     
  19. GPowrie

    Joined:
    May 16, 2005
    Also the car is for sale if anyone is interested, $23,000obo.
     
  20. Unatural

    Joined:
    Aug 5, 2003
    :ras: He tried to blame it on the camera! Well it sounded pretty good anyway. :2thumbs:
     
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