My 70 Racecar Project

Discussion in 'Members Rides' started by Tyler Northcutt, Jan 8, 2009.

  1. K0K0

    K0K0 Jamie

    Great time Tyler :TU: . How does your car feel/working for you?
    Do you have plans to run the 1/4 anytime soon?
    Keep up the good work.
    Jamie
     
    Last edited: Apr 24, 2010
  2. Opa

    Opa Torque/a 8 piston figure

    Well it was close anyway!:TU:

    Yes WE want you to make a 1/4 mile runs before the 18th of June!
    Cause the 19th/20/21 June we will be at a preppeed track to see how far in the 10s we can go with the new setup.

    My best 1/8 mile time last year with the old posi/tire setup was a 7.1.
    And last weekend on a non prepped, you can see the stone marbles in the asphalt track, we did a 7.4 at the 1/8 mile.
     
  3. Tyler Northcutt

    Tyler Northcutt Just an old pile of parts

    Might not be able to make it to a 1/4 mile dragstrip before then. I hurt the motor on my 1st qualifying pass today.
     
  4. MattRush10

    MattRush10 Buick Fanatic In Training

    What happened?
     
  5. Tyler Northcutt

    Tyler Northcutt Just an old pile of parts

    Car was running good on Friday. Best pass was a:

    60 ft. 1.5643
    330 ft. 4.2996
    1/8th 6.6320
    MPH 104.85

    But on Saturday, my first qualifying pass was going really great. Then right before the finish line POW! Big ol backfire through the intake.

    I got the car back to my pit area, pulled off the hood, pulled plugs, they looked perfect, so it wasn't the tune. Completely checked it out, and the ignition wires from my MSD box going to the distributor were melted to the header, our best guess is that ignition cut off for a second, and then came back on, igniting the nitrous fuel mixture, and bent a valve(s). We got a compression checker, and #3 is definately leakin compression back through the intake, but we stopped there, so there might be some more damage, I just got to pull the heads to see whats going on...
     
  6. Tyler Northcutt

    Tyler Northcutt Just an old pile of parts

    Here are some pictures and a couple videos.

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  7. Opa

    Opa Torque/a 8 piston figure

    Darn! I hope its just a valve and nothing more deeper down in the engine.
    I wish you good luck!


    I guy here who runs a 69 Charger with a 440 with a Blower, had the same problems last weekend when were racing to.
    His car backfired the start, quit had trouble starting again.
    And when it started and run, it was trowing black smoke out of the exhaust, his sparkplug wire were melted to on his headers.
    He has that motor for 2 years now, and its allready rebuild 3 times, cause sometimes on the street he floors it, and he forgets then that he only 89octanes in his tank burning up his pistons!
     
  8. Tyler Northcutt

    Tyler Northcutt Just an old pile of parts

    Thanks, I think it didn't hurt the bottom end of the motor, it still has great oil pressure.
     
  9. Tyler Northcutt

    Tyler Northcutt Just an old pile of parts

    Pulled off the head, it is not a valve issue, I will start a new thread with info/pictures.
     
  10. Tyler Northcutt

    Tyler Northcutt Just an old pile of parts

  11. Tyler Northcutt

    Tyler Northcutt Just an old pile of parts

    Heads are at the machine shop, they already fixed where it got burned through, and now we are waiting on the valve guide measurements, and all of that cool stuff. Hopefully I can get this thing back together before the end of the race season.

    I want to get some more racing in this year!
     
  12. sean Buick 76

    sean Buick 76 Buick Nut Staff Member

    Good luck with the engine build! The car looks great in those pics!!!! What rear tire size are you using in the back again?

    I have the same wheels, hope my car looks as tough as yours!
     
  13. Tyler Northcutt

    Tyler Northcutt Just an old pile of parts

    Thanks Sean, hopefully I can get it back on the road again soon.

    The rear tires are 29.5x10.5 MT on a 15x10" rim.
     
  14. Bobb Makley

    Bobb Makley Well-Known Member

    hey seeing this made this pop into my mind did we ever hear how the gear change worked in Opa's car. I don't think I ever saw anythin or did I miss it
     
  15. Opa

    Opa Torque/a 8 piston figure

    Hello Bob,

    I drove on a circuit track in april no prep there on the track.

    Best run was a 11.42 without stalling the car just flooring it at the lights from stationary.

    I just are starting a new topic, I just have come back froma three day race so keep that topic in mind for all info.

    I will tell you this for now, with the 28.0/10.5x15 slicks my best time for now in cold weather 12Celsius and 20mph head wind is a 10.879@196kph
    I was driving in the S/ST (Super Street Car class 10.90 index) and the car was so consistent that I was the NR1 qualifyer with a 10.902 run.
    In the finales I finished in 3th place, not bad :TU: for a first race weekend with the new setup.
     
  16. Bobb Makley

    Bobb Makley Well-Known Member

    sweet, good job sounds like it is getting it done then.
     
  17. Tyler Northcutt

    Tyler Northcutt Just an old pile of parts

    Just got the engine back from the machine shop. Now all I am waiting on is the camshaft. It should be here on thursday. Then I am going to try tackle degreeing it! Seems tough but I have a good idea on how it needs to be done.
     
  18. Opa

    Opa Torque/a 8 piston figure

    Ok lets us know or better let us HEAR, how it works out!

    Just ask one of the engine builder members here they can walk you true it for sure!

    Greetz

    Robert
     
  19. carmantx

    carmantx Never Surrender

    Engine is coming together. Tyler has been patient and careful to put all of this together based on the specs we have found to be best. Not his first to build, but hopefully will be his first 9 second build. Degreeing the cam was a fun first, very frustrated for a while until getting the crank gear in correct location. My fault.

    Here are some pictures.

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  20. Opa

    Opa Torque/a 8 piston figure

    It looks like its a complete engine again, have you fired it up yet?
     

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