ST-300 Hop Up!

Discussion in ''Da Nailhead' started by Bigpig455, Nov 17, 2012.

  1. Bigpig455

    Bigpig455 Fastest of the slow....

    I thought I was already at 4800 until I dug up my old data - I was probably between 4200-4600 at the most...

    And I thought 5100 would be perfect....the more you know, the more you dont know!

    I have a momentary switch for the stall on the shifter (it's actualy a repurposed line lock switch, fits the shifter shaft perfect) that over-rides the Bruce Roe controller... I'll make a few runs that way this spring and see what I get.
  2. wkillgs

    wkillgs Gold Level Contributor

  3. Bigpig455

    Bigpig455 Fastest of the slow....

    Put the spring back in, I'm back to short shifting at 4600. I need to start over with another governor. I think if I just removed the spring from a undrilled stock unit it might get me to 4900 rpm.

    Walt - I couldnt get the video to work - might be my computer.....can anyone else see it?
  4. nekkidhillbilly

    nekkidhillbilly post whore

    hey i got your mssg 4 times idk why but ive been down with the flu and its not been above 30 for the past two months. i havent been up there since the last i spoke with you. weather is supposed to be nice ill get up there in the coming weeks.
  5. gsgtx

    gsgtx Silver Level contributor

    i have a spare governor if you want it. then i can take Jeffs (hillbillys) one when he gets it out for my spare.
  6. telriv

    telriv Well-Known Member

    Size of screen too small & blurry to read. How can it be enlarged???

    Tom T.

  7. Bigpig455

    Bigpig455 Fastest of the slow....

    Gonna have to show you in person, Tom. In the meantime, I'll see if I can mess with the .jpg......
  8. nekkidhillbilly

    nekkidhillbilly post whore

    rather than upload here big pig use photobucket and do the link you can get bigger pics that way
  9. Bigpig455

    Bigpig455 Fastest of the slow....

    Decided to take one more pass at my mods - took another gram of metal off each weight so they were at 9 grams each....too much! I'm back over 5000 rpm again

    I'm gonna try to add a gram of weight back to one of the weights today and see where that gets me. I'll weld one of the 1/4 holes closed, and that should just about do it.

    Getting closer!

    I will say though, I made up the 1/2 spacer for the carb and it seems to make some power! I'll get it on the G-Tech to be sure, but feels GREAT! I wound up using both 4 hole gaskets so the charge is contained all the way into the intake.
  10. 69GS400s

    69GS400s own amusement ride!

    I know Im real late with this reply - was reading and saw your mention of Type "F" fluid ... My tranny guy FB Transmissions (Freddy Brown) specs type "F" in everything he builds for street/strip applications and that is what I've been running in my TH400 since he built it in ~1997. LOTSA street/hwy miles, punishment, and prolly a good couple hundred of passes and still going strong.

    ... just an FYI
  11. nekkidhillbilly

    nekkidhillbilly post whore

    just gonna let you know that other one is then truck. i doubt i can get free to get to a post office till my days off cause of work. so should be out around the end of the week.
  12. Bigpig455

    Bigpig455 Fastest of the slow....

    No problem! I'm just happy to get another core to play with..

    Although, I got out my trusty 100.00 Harbor Frieght flux wire welder this morning and learned three things:
    • Dont forget to put the visor down
    • It only takes one spark to send a Brakeclean soaked rag up in flames
    • You can get the heat high enough to actually melt material away rather
    than add material.

    All that aside I added 1 gram of material to the end of one of the weights, and it seems to work! Shift point is right where I want it by ear, I'd guess 4900 rpm . My G-Tech is measuring revs all wonky so I'll have to fix that first to get an official read.

    I'd still lilke to use a clean weight and start over, I dont trust that ground down slag to hold forever, and i dont want it running through my tranny. But in the meantime...I think I'm ready for the season.
  13. nekkidhillbilly

    nekkidhillbilly post whore

    you get everything?
  14. Bigpig455

    Bigpig455 Fastest of the slow....

    I did - thanks man!
  15. nekkidhillbilly

    nekkidhillbilly post whore

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