2012 Mustang Boss 302 New Clutch/Reservoir Install

Discussion in 'Drivetrain, Exhaust and Electrical' started by thehueypilot, Oct 10, 2019 at 9:09 AM.

  1. thehueypilot

    thehueypilot TMO Advanced

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    I finally got some time to replace/upgrade the clutch in my Boss 302 and it was a little more difficult than the older cars I am used to working on. I had a few surprises that I can pass on that I have learned the hard way. I will try to document some of the issues I encountered along the way and possibly some solutions. If you have actually performed this job and have some tips I would like to hear from you. Clutch12.jpg Clutch14.jpg

    The first issue is the transmission is not flat on the bottom which when using a standard hydraulic transmission jack and cradle it wants to roll and when it rolls it broke the VSS sensor which is a $50 mistake.

    Tim
     
    Last edited: Oct 11, 2019 at 8:10 AM
  2. thehueypilot

    thehueypilot TMO Advanced

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    The transmission's bell housing needs more room to move back to allow it to clear the clutch than there is actual space available. The engine will only tilt back so far before it hits the Boss intake manifold so maybe the factory manual, which I have not read fully yet, requires the manifold to be removed? I finally got it out but only after a lot of pulling and pushing. I see now that the transmission cradle I am using must be modified to hold the rounded transmission bottom better. My short term solution was to add some 2X4's and screws to I could bolt the back of the transmission to the jack cradle so it cannot move. Note: I am also adding a MGW race spec shifter at this time as well. I had the original MGW shifter so I though I would upgrade it while I had it out. Clutch12.jpg Clutch10.jpg Clutch11.jpg
     
    Last edited: Oct 11, 2019 at 8:08 AM
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  3. thehueypilot

    thehueypilot TMO Advanced

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    The clutch disc has a plastic bushing in it and this is the reason I can't shift above 6k? I have never seen a clutch with plastic components....and if you don't believe this transmission is made in china I have the sticker to prove it. Note: the clutch is made in Turkey. Clutch2.jpg Clutch5.jpg
     
    Last edited: Oct 10, 2019 at 2:41 PM
  4. thehueypilot

    thehueypilot TMO Advanced

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    Clutch6.jpg I found an issue with the vent tube on top of the transmission and I believe someone on this site has brought up this issue before. The hose that attaches to the vent's check valve is dry rotted and actually fell off but got wedged in under a wire harness so I did not lose it going down the road. I am replacing the Ford hose with a silicon hose.
     
    Last edited: Oct 11, 2019 at 8:06 AM
  5. thehueypilot

    thehueypilot TMO Advanced

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    I added a Shelby clutch reservoir and and was not too impressed with the finish. The metal bracket was cut out with a laser and powder coated but they did not bother to remove the burrs that the laser cutting left behind and powder coated over top of the burrs. It fit very well though. I added a SS braided line. I bought a SS line from Ford Racing but it did not come close to fitting w/o major bending. I think they sent the wrong one or it was packaged incorrectly and for $285 I expect it to fit like a glove. I sent it back and used the SS braided hose that came with the clutch kit.

    Tim

    Clutch Cylinder.jpg
     
    Last edited: Oct 10, 2019 at 1:55 PM
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  6. thehueypilot

    thehueypilot TMO Advanced

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    I got the transmission back in last night and what a difference it makes to have the transmission securely fasted to the transmission jack's cradle. It also does not hurt that the overall height of the new clutch is about 3/4" shorter than the OEM giving me more wiggle room to fit the bell housing into the tight confines of the transmission tunnel. I tried to install the race spec shifter completely assembled but the handle would not go into the tunnel's shifter opening until the bell housing was completely seated so I removed half of the shifter's body. It is good to hear the satisfying "thunk" of the bell housing completely seated against the back of the motor when it all goes back together properly. My temporary cradle fixture will need to be trimmed down some when I make a final long term fixture out of a steel angle bolted to the cradle as it was a little bit too wide to fit into the transmission tunnel. Clutch15.jpg Clutch16.jpg Clutch17.jpg

    Tim
     
    Last edited: Oct 11, 2019 at 8:12 AM
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  7. Fat Boss

    Fat Boss TMO Addict

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  8. Grant 302

    Grant 302 OPM Spent: $665,833 Moderator

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    I doubt that's the problem. Are there any glazed spots on your pressure plate?
     
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