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Mustang throttle body on 1g intake manifold

Posted by Taylor4ghindman, Mar 29, 2020

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  1. Taylor4ghindman

    Taylor4ghindman Probationary Member

    24
    9
    Joined Nov 21, 2019
    Warrenton, Missouri
    Hello everyone I figured I'd post this here instead of Facebook. I've been thinking of what would be a great upgrade that in cheaper in the long run and more abundant in parts. But here is my throttle body swap on a 1g intake manifold.
    Tools I used
    MUST HAVE ECMLINK OR OTHER TUNING ECU
    Cordless drill or corded
    A coned deburing bit
    A 21/64 drill bit
    Ratchet and socket set
    box knife with a sharp blade
    A machinist file
    Wire stripers
    Wire crimped
    Wire cutter
    Lighter or heat gun
    Sharpie

    Supplies needed
    Jb weld
    4- M8x1.25x 1" alen bolts
    Grey RTV
    Tape any kind that sticks to aluminum
    Cleaner/ degreaser/carb cleaner/brake cleaner
    Heat shrink tube connectors/ solder and heat shrink your choice

    Reasons I did the swap
    Cheaper tps
    More abundant at scrap yards if one breaks
    No boost leaks
    Slight bigger than stock at 65mm vs the 60mm dsm throttle body.
    And easier to adjust the idle.
    No more replacing the IAC valve
    Can also do a remote IAC if you choose to. That's also on here.

    Ok now for the fun part. Modifying the mustang throttle body.
    First things first. The stock dsm throttle cable has a metal cylinder on the end of it and this is where the drill bit comes into play. You have to drill out where this goes because the ford cable cylinder is smaller than the dsm cable. Once that's done the dsm cable fits like a charm but be slow because it's just plastic. I should have taken a picture of that part but it's simple enough. Once that's done move to the next step.

    Next step clean the throttle body from any and all oils for the tape to stick and then you have to mix the JB weld to fill in the stock un used IAC prevision on the mustang throttle body because the factory dsm gasket wont cover it nor will the intake manifold. So after that's done let sit and cure. I used the normal JB weld but could have used the quick cure. Put some tape on the inside of the throttle body where the provision is so the JB weld wont run out of it. After the JB weld cures remove the tape from the throttle body and shape it to the bore of the throttle body bore and then using the machinist file flatten the mound of JB weld. Once that's done your onto the next step. Wiring up the ford TPS. I hate wiring but this was easy. In the pictures just connect the wires together as in the picture and your done. Simple as that. Now that that's done you can remove the intake manifold to port match the throttle body or not. I haven't done it yet because I'm saving that for a later time. Dont have to but to get the most out of the extra 5mm you can.
    Once you get the throttle body ready to eliminate further issues when installing it. You must elongate the bolt holes for it to fit the 1g intake manifold. I simply used the stock dsm throttle body gasket and a sharpie and marked where the dsm throttle body bolts will go. then using the deburing bit and drill start to elongate the holes while test fitting it to your manifold. It's a work out for sure but well worth it. Then once it fits your intake manifold your ready to bolt it on and adjust your tps.
    Once your ready to adjust your TPS using ECMLINK turn the key on engine not running start a log with gas pedal closed hit the gas pedal and hold it for 3 seconds stop the log. Then right click on the log scroll down to adjust tps click that and save the correction that ECMLINK made for you and your done.

    And enjoy the shorter throttle feel and a great smooth idle. Idle may need adjusted but that's a given considering it's a mustang throttle body. 20200325_221942.jpg 20200326_092327.jpg 20200326_092206.jpg 20200327_121909.jpg 20200327_185854.jpg 20200328_091408.jpg 20200328_091411.jpg 20200328_132650.jpg 20200328_174032.jpg
     
    Last edited by a moderator: Mar 30, 2020

    Street Build 127  1

    1992 Eagle Talon TSi AWD
    awd · manual · 1G DSM
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  2. Taylor4ghindman

    Taylor4ghindman Probationary Member

    24
    9
    Joined Nov 21, 2019
    Warrenton, Missouri
    20200326_111244.jpg 20200326_111259.jpg
     

    Street Build 127  1

    1992 Eagle Talon TSi AWD
    awd · manual · 1G DSM
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    camocorvette likes this.
  3. BLACK'98DSM

    BLACK'98DSM Proven Member

    1,555
    627
    Joined Feb 9, 2019
    Hoover, Alabama
    Interesting write up. We appreciate you sharing.

    It is essentially the same as installing a Jeep throttle body onto a 420a.

    One question for you. What model Mustang did this come from? What engine?
     

    Road Race Build 3K  10  25

    1998 Mitsubishi Eclipse N/T
    fwd · manual · 2G DSM

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  4. Taylor4ghindman

    Taylor4ghindman Probationary Member

    24
    9
    Joined Nov 21, 2019
    Warrenton, Missouri

    It came off of a 98 Lincoln town car 4.6 which is the same throttle body off a 98 mustang GT 4.6 2 valve.
     

    Street Build 127  1

    1992 Eagle Talon TSi AWD
    awd · manual · 1G DSM
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    camocorvette and BLACK'98DSM like this.
  5. Taylor4ghindman

    Taylor4ghindman Probationary Member

    24
    9
    Joined Nov 21, 2019
    Warrenton, Missouri
    Screenshot_20200329-165525_Google.jpg
     

    Street Build 127  1

    1992 Eagle Talon TSi AWD
    awd · manual · 1G DSM
    Loading...
    camocorvette likes this.
  6. Taylor4ghindman

    Taylor4ghindman Probationary Member

    24
    9
    Joined Nov 21, 2019
    Warrenton, Missouri
    Just for future reference
     

    Street Build 127  1

    1992 Eagle Talon TSi AWD
    awd · manual · 1G DSM
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  7. biglady112

    biglady112 Proven Member

    1,244
    208
    Joined May 20, 2004
    Commerce City, Colorado
    Have you done a proper boost leak test yet? I think you will be surprised. The mustang and aftermarket mustang throttle bodies are known for leaking extremely badly on forced induction cars. You likely just cost yourself horsepower doing this. If you installed it straight from the junkyard car that is.
     
  8. Taylor4ghindman

    Taylor4ghindman Probationary Member

    24
    9
    Joined Nov 21, 2019
    Warrenton, Missouri
    I have actually and it doesnt leak even at 36psi where as my stock throttle body you could hear it leaking. Also engine vacuum at idle at 900rpm is now at 13 to 15 where as before with the stock throttle body vacuum was only around 10 to 9 at the same rpm. But I agree with you though that is a worry I also had. But the throttle body I am using isnt an aftermarket throttle body it is a factory OEM throttle body from Ford. But I will post the results of a 3ed gear pull once I get everything sorted out.
     

    Street Build 127  1

    1992 Eagle Talon TSi AWD
    awd · manual · 1G DSM
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