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OK, now I have stroke, but how do I balance it? Harmonic balancer issues

Discussion in 'Need for Speed!' started by Turdle, August 13, 2007.


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    1. reserved50

      reserved50 Well-Known Member

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      Im putting one together right now, 28OZ AOD flexplate with the stock balancer and the front counter weight shaved down or swiss cheesed. They said drilling the cast balancer is asking for trouble. This sounds silly but if you go with the heavier rotating assembley its easier to balancer since theres not as much weight reduction in the crank needed
       
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    3. CougarX

      CougarX Well-Known Member

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      Thats the same thing I had done. Lotsa holes in the front counterwight of the crank, but it balances!
       
    4. CDW6212R

      CDW6212R Hauls the mail. Elite Explorer

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      That is how an engine is balanced, the crank is drilled and filled.
       
    5. reserved50

      reserved50 Well-Known Member

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      yea ...but... the guy that balanced it wasnt too impressed drilling all those holes on a 28oz balanced crank using a 50oz balancer, there is drilling involved or adding metal but taking out about half a pound is quite a bit since the missmatch is so great.:salute:
      Other than custom machining I see no way to use an aftermarket balancer with stock electronics thats easy to do






      large heavy metal doorstop

      [​IMG]
      [​IMG]
       
    6. Spas

      Spas It's all Jack's fault Elite Explorer

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      OoOOoooOooooo, it's so shiny!!!! :D
       
    7. CougarX

      CougarX Well-Known Member

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    8. Turdle

      Turdle Will cook for gas Staff Member Moderator Elite Explorer

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    9. reserved50

      reserved50 Well-Known Member

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      AFR 185s with Ford Motorsport stainless headers that were ceramic coated ( yes some bolts are missing since I was just mocking it all up). I have no idea what numbers they put down to TMs, Im curious also on a comparison on the same engine. Im just happy they wont sputter like the cracked 97s I had :D.

      The block was epoxy primered with urethane toreador red to match the body. The intake, pan etc were all flat grey epoxy with urethane clear to give a toned down look. The main thing that will give it away is the strangely shaped blower that doesnt look like an alternator :p . Im going to try and somewhat "tune" it with a C&L meter with sampling tubes similar to a 94/95 mustang and adjusting fuel pressure, I'll see how far I get with that
       
    10. CDW6212R

      CDW6212R Hauls the mail. Elite Explorer

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      "That is purdy," I'll think about the dark red for mine also, maybe black heads and oil pan, or powder coated pan(aluminum Jon).

      Jon, have you had any feedback or heard whether clear powder coat will survive around an engine(for bare aluminum)?
       
    11. reserved50

      reserved50 Well-Known Member

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      I ddint get too far with the sampling tubes and FMU at all :roll: , runs richer than 10-1 WOT, it would of worked if i used the smallest injectors possible and overran them and matched the FMU disks (guesswork, maybe 24#), so i bought a Tweecer :confused:
       
    12. Turdle

      Turdle Will cook for gas Staff Member Moderator Elite Explorer

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      hmm, missed this one also-

      the clear powders should be fine-they are used all the time.

      Edelbrock's "endurashine" is a mere clear coat--
       
    13. CDW6212R

      CDW6212R Hauls the mail. Elite Explorer

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      I just read this last post also. How well could car urethane hold up as engine paint? It isn't feasible to powder coat a block away from town. I'll have to change to tall valve covers with roller rockers so the finish might be something to think about. A plain aluminum finish isn't very special, but a decent match of dark red or the transparent chromes may be good.

      FYI, for the engine tuning, brake down and invest the money into proper PCM programming. Get the flasher and the proper software, wideband O2, a laptop, and tune the engine correctly. Throw the FMU, and "Tweecer", in the Mustang bin when finished. Good luck,
       
    14. aldive

      aldive Elite In Memoriam

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      I agree.
       

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    15. Turdle

      Turdle Will cook for gas Staff Member Moderator Elite Explorer

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      Good point.
       
    16. CDW6212R

      CDW6212R Hauls the mail. Elite Explorer

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      It's funny, I have had a couple of "conversations" with "experienced" Mustang guys and Lightning(94/95) guys on other forums. They swear that they can program their EECIV vehicles to run as smooth as stock with any modifications. When I read that stuff I immediately quit suggesting a change to OBDII for another member. The vehicle was a 92 F150 with a 351W and he was planning for a stroker and a mild supercharger. All that I discovered was that Ford made a late 90's van with a 351W and the E4OD trans, which is a great strong transmission for performance.
       
    17. Spas

      Spas It's all Jack's fault Elite Explorer

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      Not to get this too far off subject, but since you're all in this thread already....

      What size injectors are you 347 owners using? I'm thinking I need to run 30#'ers since I'm upgrading to 3/8 line, fuel pressure regulator and 255lph pump.
       
    18. Turdle

      Turdle Will cook for gas Staff Member Moderator Elite Explorer

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    19. Spas

      Spas It's all Jack's fault Elite Explorer

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      Yeah, cuz you're crazy :D
       
    20. Turdle

      Turdle Will cook for gas Staff Member Moderator Elite Explorer

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      You gonna spray or blow?
      if so, better get big ones--:D
       
    21. rocket 5979

      rocket 5979 Resident Gearhead

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      Jeeze Jon!!!! Must I keep you in check ALL the time??? The things us guys say to women! :D
       
    22. rocket 5979

      rocket 5979 Resident Gearhead

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      Seriously though, if she is going to spray then I suggest wetshot, in that case the injectors will only have to be matched for the 347 as the nitrous will get its fuel elsewhere in the fuel system.
       
    23. Spas

      Spas It's all Jack's fault Elite Explorer

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      Jt's funny :D

      Nope, I'm staying naturally aspirated albeit with a phenolic spacer and Systemax upper & lower intakes.
       
    24. Turdle

      Turdle Will cook for gas Staff Member Moderator Elite Explorer

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    25. CDW6212R

      CDW6212R Hauls the mail. Elite Explorer

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      Stock is 19, so take 347 and divide by 302, and multiply that by 19, and any rpm range increase. That amounts to what, about 7/6, or 17%, or less than 24, so I suggest 24's. That's for nothing beyond a 347 and 5000rpm.

      I ran stock 19's with Edelbrock heads and intake on a stock 302 in my Lincoln, shifting at 5600rpm(small cam). Bigger injectors are needed for major power increases, or huge size/rpm changes. If not then why do it, the really big injectors are harder to tune yes?
       
    26. rocket 5979

      rocket 5979 Resident Gearhead

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      Don, what your mathematical advice does not take into account is that you are trying to compare a stock 302 to fully modded 347. Big difference in fueling needs. Now if you were comparing just cubes for cubes and both were stock then your math would be fairly correct. I would recommend going larger than 24's for properly fueling a 347 combo with accompanying mods.

      Bigger injectors are not really harder to tune. Even ones that are much too big can still run pretty well. The downfall when going with significantly oversized injectors is poor gas mileage due to less efficient fuel atomization.
       

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