My 70 Racecar Project

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

  1. carmantx

    carmantx Never Surrender

    Not quite ready. Just sat intake and valve covers on to cover overnight. Should get pan on this morning, and possibly finish up tonight or tomorrow morning, and get ready to set it in the car and get ready to fire.
     
  2. carmantx

    carmantx Never Surrender

    The engine is sitting in the car now and getting all buttoned up. Should be doing the break in this week.

    [​IMG]

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  3. Buick#455

    Buick#455 Well-Known Member

    Nice! VERY NICE!!!!!
     
  4. Tyler Northcutt

    Tyler Northcutt Just an old pile of parts

    The engine is broken in. Ran it for twenty minutes for the cam break in. Had no issues.
     
  5. Tyler Northcutt

    Tyler Northcutt Just an old pile of parts

    I am going to spend some time today getting the valves adjusted and getting everything tuned right, however i probably will not finish it, I have to go back to class at six and be there till nine. But ill take some video when i do finsih it! :TU:
     
  6. Tyler Northcutt

    Tyler Northcutt Just an old pile of parts

  7. Opa

    Opa Torque/a 8 piston figure

    :TU: Its working!! Its working! So almost set for the next Podrace eh dragrace, :laugh:

    I love that PR OF ORM carb I have one to, whats yours a 850CFM?
     
  8. sean Buick 76

    sean Buick 76 Buick Nut Staff Member

    Great work!!!! What a cool father/son team!
     
  9. carmantx

    carmantx Never Surrender

    Thanks Sean.
    Its a 950 opa.

    I am a proud dad. Tyler paid for all of this himself, and worked with an old friend of mine at our machine shop to get everything correct for the buick. I still get to help though, and I like that.
     
  10. Tyler Northcutt

    Tyler Northcutt Just an old pile of parts

    Had the car on the dyno today. Mostly did some breakin time. I did do a power pull, was a little surprised by the numbers. It did 340 RWHP and 323 RWTQ.

    That is way down from what it did last time on the dyno. 376RWHP and 384 RWTQ.

    I do have a few things i am going to try. And it might just be that the engine is still a little tight and needs to loosen up with time. I don't know.
     
  11. sean Buick 76

    sean Buick 76 Buick Nut Staff Member

    What are the specs on the build? How many things were changed compared to the last dyno runs? Same dyno machine?
     
  12. Tyler Northcutt

    Tyler Northcutt Just an old pile of parts

    The only thing that has changed is the camshaft. Same mustang dyno that I ran it on last time. Although it is a new dyno program. I did notice that the weight and Hp @ 50 #'s are set a little different. Maybe that has something to do with it. I am also running a lot less timing. I am going to try and bump up the timing tomorrow and see if I get a good result.
     
  13. Opa

    Opa Torque/a 8 piston figure

    Do you have lower compression then the earlier buildup?

    Set the timing on 32 degrees, check the carb jets, put 77/78 in front and 87 jet in the rear and try again what the numbers are.
     
  14. sean Buick 76

    sean Buick 76 Buick Nut Staff Member

    Yeah, I would not be too concerned... I am sure that between the new program and the timing you are back where you were before.
     
  15. Tyler Northcutt

    Tyler Northcutt Just an old pile of parts

    Either way i am not worried about the dyno #'s to be completely honest. I use it mostly for tune. I did figure out that the 5 year old valve springs are floating at around 6k rpm. So I am ordering some new valve springs.
     
  16. Tyler Northcutt

    Tyler Northcutt Just an old pile of parts

    Compression should be just about the same, if not a little higher. I have the timing set at 34 degrees. It seemed to run better there. The carb is tuned perfectly, no need for a jet change at this time. I'm not sure what jets are in it now.
     
  17. Tyler Northcutt

    Tyler Northcutt Just an old pile of parts

    Well here we are getting ready for the race season. Took the car up to the chassis dyno to get some tuning done, and to get the nitrous workin on it. Took a couple videos.

    I ended up doing 409 RWTQ and 417 RWHP NA

    and with the nitrous I was able to push 552 RWTQ and 540 RWHP.

    My instructor was telling me that that was the highest amount of any car that has been on the dyno. We have had some diesel pickups push 1000 ft/lbs but those are diesel trucks.

    Im ready for race season now all i have to do is change rear gears to be able to run it through the 1/4 mile. On the simulation on the dyno I ran out of RPM and didnt want to hit the rev limiter so i let off at 1000' and still coasted through to a 10.53 at only 119 mph. Id like to see what it can do actually running through the traps.
     
  18. Tyler Northcutt

    Tyler Northcutt Just an old pile of parts

  19. K0K0

    K0K0 Jamie

    Great #'s Tyler what rpm did u hit on the sim @ 1000ft? What gear are you running and what will you change it to?
    Jamie
     
  20. Tyler Northcutt

    Tyler Northcutt Just an old pile of parts

    The 1000ft was about 6500 rpm, and the rear gears are 4.10, I really want to keep the rpm below 6500 to make this engine last probably gonna go with a 3.42 gear.
     

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