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Thread: Jeff's 3.8 and 4.2 Projects.

  1. #91
    Join Date
    Oct 2018
    Location
    Nova Scotia, Canada
    Posts
    142
    Quote Originally Posted by Flex View Post
    You can also machine an aluminum replacement for the brittle plastic under the coolant bleeder screw like TBSC is doing.
    I am already planning on making one for myself. I just need to work out a few details on it and make a 3D model of it first.

  2. #92
    Join Date
    Oct 2018
    Location
    Nova Scotia, Canada
    Posts
    142
    I was able to machine the replacement thermostat flange today and weld it onto an old housing assembly.

    First I had to make a fixture to hold it while I cut the profile.


    Milling the small holes out.


    Machining the flange out of 3/8" mild steel plate.


    A flange is born.


    After welding, grinding, machining the mating surface flat and a bad temporary spray job to see what it would look like. It will be sandblasted and properly refinished later on.

  3. #93
    Join Date
    Mar 2013
    Posts
    8
    Would you be willing to make one of the cobra TB inlets? I'm building a 4.2 with single port heads (for now) and swapping into my 82 F100. I have a lot of room behind the blower so I'm planning to move the intake plenum back a bit to gain some room for a better inlet. I was gonna build one myself but you are already halfway there.

  4. #94
    Join Date
    Oct 2018
    Location
    Nova Scotia, Canada
    Posts
    142
    Quote Originally Posted by clayton351 View Post
    Would you be willing to make one of the cobra TB inlets? I'm building a 4.2 with single port heads (for now) and swapping into my 82 F100. I have a lot of room behind the blower so I'm planning to move the intake plenum back a bit to gain some room for a better inlet. I was gonna build one myself but you are already halfway there.
    Did you mean just the flange to mount the tbody to or a whole plenum thing? The cobra mounting flange is no problem and I may even have a spare on the shelf. The whole plenum would be very hard to do again and still be economically feasible, lots of hours involved in it compared to buying a Magnum Powers plenum and an aftermarket tbody.

  5. #95
    Join Date
    Mar 2013
    Posts
    8
    Quote Originally Posted by jb351 View Post
    Did you mean just the flange to mount the tbody to or a whole plenum thing? The cobra mounting flange is no problem and I may even have a spare on the shelf. The whole plenum would be very hard to do again and still be economically feasible, lots of hours involved in it compared to buying a Magnum Powers plenum and an aftermarket tbody.
    I did mean the whole plenum but I guess its gonna be too custom for that. I would be interested in just a flange though. Maybe even with single opening as well.

  6. #96
    Join Date
    Oct 2018
    Location
    Nova Scotia, Canada
    Posts
    142
    Quote Originally Posted by clayton351 View Post
    I did mean the whole plenum but I guess its gonna be too custom for that. I would be interested in just a flange though. Maybe even with single opening as well.
    Flange is no problem even with a single opening.

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