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Thread: Forte's Mechanical Throttle Linkage Install

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    Senior Member cv2065's Avatar
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    Forte's Mechanical Throttle Linkage Install

    I received Mike's mechanical throttle linkage in the mail a couple of weeks ago. Very nice piece. Also spoke to Mike on the phone and really nice, helpful guy!

    I'm getting ready to install my firewall, but wanted to check to see if I needed to do any drilling for the linkage prior to installing the firewall, or does it all need to be done on the car after everything is hooked up? I looked around and didn't see a 'How To' anywhere, so if anyone has one, please point me in the right direction. Thanks!
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    #9160 BB767's Avatar
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    Yeah, there is not a lot of guidance but it goes pretty smooth. I installed the linkage and mounts after I had the firewall already installed. After the mounts are installed you can determine where the linkage shaft goes through driver foot box inner panel. Drilled the hole for the shaft to go through, disassembled the linkage shaft and put it through the hole. Put a rubber grommet on it (with a little WD-40) and it looks like a stock installation, very clean.IMG_0425.jpg
    Last edited by BB767; 08-17-2018 at 12:15 AM.
    MK4 - complete kit - Blueprint 427W - Holly Sniper EFI - TKO 600 .64 - 3.55 3 link - 17" Halibrands

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    Senior Member CraigS's Avatar
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    BB767 mounted his to the 2x2 frame tube. You can probably get away w/ mounting it to the aluminum just above the steel tube but keep it low as possible. Use a fender washer on either side but grind a flat on them so you can mount low. The problem w/ being too high is the top of the inner bell crank could interfere w/ the aluminum on top of the foot box.
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    Senior Member jlfernan's Avatar
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    I also attached some 2 inch aluminum angle to the 2x2 frame tube to reinforce the the firewall. The aluminum for the firewall is thin and you will have a bit flex in it when accelerating.

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    I also mounted THROUGH the 2”x2” frame with a longer bolt. Turned out well, pretty much under dash and the carpet covers it, obviously makes it super solid. I tried doing the rubber grommet. Couldn’t make it work, mine is early 2017 vintage mk4 and I think it has different aluminum in the foot box area the shaft goes through. My shaft is at about a 45 deg angle to the aluminum panel. Just left a open hole, never thought of it once while driving.

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    Also I’d wait until you have the engine installed, pedals all in andbrakes bled. Reason being so you can set up the throttle pedal position and height to work with your brake pedal height. For me this was one of the most important parts of the build, if you want to be able to heel-toe for downshifts. I also moved the mounting points for the throttle pedal and made a stop for the pedal where the carb was at full throttle.

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    Senior Member cv2065's Avatar
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    I like the mounting through the 2x2 frame. I have the thicker firewall from ffmetals, so hopefully it will cure any flex when accelerating. Anyone have a diagram of the whole setup as installed?
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    Quote Originally Posted by cv2065 View Post
    I like the mounting through the 2x2 frame. I have the thicker firewall from ffmetals, so hopefully it will cure any flex when accelerating. Anyone have a diagram of the whole setup as installed?
    Here's how I did mine. I too would suggest to wait until the motor is installed so that you can get the correct dimensions. Mine's a little different as I made my own firewall and linkage. The firewall hangs lower than the 2x2 and it's .125" thick. So I mounted my linkage to the firewall itself. HTH a little. It's a great addition to the build!

    Mechanical Linkage Album
    Last edited by DadofThree; 08-17-2018 at 09:25 AM.
    Dave
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    Senior Member cv2065's Avatar
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    Quote Originally Posted by DadofThree View Post
    Here's how I did mine. I too would suggest to wait until the motor is installed so that you can get the correct dimensions. Mine's a little different as I made my own firewall and linkage. The firewall hangs lower than the 2x2 and it's .125" thick. So I mounted my linkage to the firewall itself. HTH a little. It's a great addition to the build!

    Mechanical Linkage Album
    Great pictures and parts list. Thanks DOT!!
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    #9160 BB767's Avatar
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    DadX3, I am wondering where you put your return spring(s)? Could not see them in the photos. I am sure you know that you should NEVER rely on the carb/metering springs alone.
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    Quote Originally Posted by BB767 View Post
    DadX3, I am wondering where you put your return spring(s)? Could not see them in the photos. I am sure you know that you should NEVER rely on the carb/metering springs alone.
    Yes, I know. Those photos have now been added to the Album.

    20180314_231707 by D. R., on Flickr

    20180314_231508 by D. R., on Flickr
    Last edited by DadofThree; 08-17-2018 at 10:43 AM.
    Dave
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  13. #12
    #9160 BB767's Avatar
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    Nice, I figured they were just out of the picture.
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    Senior Member jrcuz's Avatar
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    I made my own mech linkage from edwardb's build and parts list. I also have the ffmetal firewall forward and it is plenty strong enough for the linkage mount. I also used Russ Thompsons accellerator pedal.
    JR
    Last edited by jrcuz; 08-17-2018 at 08:09 PM.
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    RJD's Avatar
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    Just installed mine today. Don't think you"ll get much flex if you mount it to the firewall since the rod ends are mounted so close to the 2" tube. Mine feels pretty robust even with the regular firewall.
    D1295A6C-F9CE-4DC1-9DAB-87F536657E96.jpg
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  16. #15
    Senior Member cv2065's Avatar
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    Quote Originally Posted by RJD View Post
    Just installed mine today. Don't think you"ll get much flex if you mount it to the firewall since the rod ends are mounted so close to the 2" tube. Mine feels pretty robust even with the regular firewall.
    D1295A6C-F9CE-4DC1-9DAB-87F536657E96.jpg
    Looks great RJD. Do you have a picture of the assembly attaching to the pedal?
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    RJD's Avatar
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    Here's a pic showing the rod going down to the pedal, and another pic showing it connecting to the Russ Thompson gas pedal. I have to go back and put lock nuts on all the rod ends and install the linkage return springs. I made my own linkage following edward B's parts list.
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  18. #17
    Senior Member jrcuz's Avatar
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    I did use blue thread locker on all of the set screws and lock nuts.
    JR
    Mk4 complete kit #9059 ordered 1/19/17 delivered 3/23/17, 2015 IRS, Fortes/DART347,TKO 600, hyd clutch, P/S, 12.88 wilwood brakes front and rear, heater/defrost and vintage gauges
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  19. #18
    Senior Member phileas_fogg's Avatar
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    If you’re using the Russ Thompson gas pedal you can set pedal height after you’ve got the rest of the linkage installed.

    Also you may find you need some roll pins through the lever arms to keep them from slipping. And you may want to add some collars to keep the pivot rod from sliding side to side. See post #291 of my build thread for more (http://www.ffcars.com/forums/17-fact...r-build-5.html).


    John
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    https://www.ffcars.com/threads/phile.../#post-4776313

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