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1973 F-250 - Turbo BBF - It's alive!

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  • Re: 1973 F-250 - Turbo BBF - It's alive!

    No I have never had a TIG. Just a plain ole MIG.

    I think it will work fine if I can get it hot enough to flow the rod. I'm sure the oxy/acetylene torch will do the trick. Just have to find time to run out to my Dad's barn and get it.
    milner351 likes this.
    Life is short. Be a do'er and not a shoulda done'er.
    1983 Mustang GT 302/T5 http://www.bangshift.com/forum/forum...485-bbr-s-83gt
    1973 F-250 BBF Turbo Truck http://www.bangshift.com/forum/forum...uck-conversion
    1986 Ford Ranger EFI 545/C6 https://bangshift.com/forum/forum/ba...tooth-and-nail

    Comment


    • Re: 1973 F-250 - Turbo BBF - It's alive!

      We haz camshaft! Lunati Barebones hydraulic flat tappet.

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      Life is short. Be a do'er and not a shoulda done'er.
      1983 Mustang GT 302/T5 http://www.bangshift.com/forum/forum...485-bbr-s-83gt
      1973 F-250 BBF Turbo Truck http://www.bangshift.com/forum/forum...uck-conversion
      1986 Ford Ranger EFI 545/C6 https://bangshift.com/forum/forum/ba...tooth-and-nail

      Comment


      • Re: 1973 F-250 - Turbo BBF - It's alive!

        So far, the alumiweld is a fail. I can get it hot and the rod will melt, but it does not flow like I feel like it should.
        Life is short. Be a do'er and not a shoulda done'er.
        1983 Mustang GT 302/T5 http://www.bangshift.com/forum/forum...485-bbr-s-83gt
        1973 F-250 BBF Turbo Truck http://www.bangshift.com/forum/forum...uck-conversion
        1986 Ford Ranger EFI 545/C6 https://bangshift.com/forum/forum/ba...tooth-and-nail

        Comment


        • Re: 1973 F-250 - Turbo BBF - It's alive!

          that should idle at 600rpm in a mill that big. Hee hee.
          Flying south, with a flock of bird dogs.

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          • Re: 1973 F-250 - Turbo BBF - It's alive!

            So far, the alumiweld is a fail. I can get it hot and the rod will melt, but it does not flow like I feel like it should.
            In our shop the guys say that the Harbor Fright alumiweld is garbage. They also say the non-Harbor Fright stuff works like a dream.

            Your mileage may vary.....I am just repeating what I hear. Would be interesting to learn you opinion on the other stuff though.
            Of all the paths you take in life - make sure a few of them are dirt.

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            • Re: 1973 F-250 - Turbo BBF - It's alive!

              Good to know! Home Depot has the Bernzomatic brand. I might snag a pack and test them.

              Cam is pretty mild, but that's the idea. Mild mannered until you grab a big old hunk of throttle.
              Last edited by BBR; September 28th, 2018, 12:51 PM.
              Life is short. Be a do'er and not a shoulda done'er.
              1983 Mustang GT 302/T5 http://www.bangshift.com/forum/forum...485-bbr-s-83gt
              1973 F-250 BBF Turbo Truck http://www.bangshift.com/forum/forum...uck-conversion
              1986 Ford Ranger EFI 545/C6 https://bangshift.com/forum/forum/ba...tooth-and-nail

              Comment


              • Re: 1973 F-250 - Turbo BBF - It's alive!

                What about sweeting them with lead, or prefulxed bronze rods? I have know idea if these are even options .
                http://www.bangshift.com/forum/forum...-consolidation

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                • Re: 1973 F-250 - Turbo BBF - It's alive!

                  What about sweeting them with lead, or prefulxed bronze rods? I have know idea if these are even options .
                  Lead melts too low of a temp and is malleable..
                  Bronze needs hotter temps, likely to drop a 3" hole.

                  2nd the HF stuff being garbage.
                  Have seen some real nice welds with welding store stuff.

                  Comment


                  • Re: 1973 F-250 - Turbo BBF - It's alive!

                    Well, the Bernzomatic stuff didn't work any better. It did basically the same thing. Blobby chunks that would not stick to either side. I scrubbed it quite a bit with a new stainless brush, hoping it was an oxidation issue. No luck. I give. On to other options. A good friend who is an excellent welder, just bought a TIG and has offered to weld them after he gets a little practice time in. I'm not in a super big hurry at this point so I just might wait on him.

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                    Life is short. Be a do'er and not a shoulda done'er.
                    1983 Mustang GT 302/T5 http://www.bangshift.com/forum/forum...485-bbr-s-83gt
                    1973 F-250 BBF Turbo Truck http://www.bangshift.com/forum/forum...uck-conversion
                    1986 Ford Ranger EFI 545/C6 https://bangshift.com/forum/forum/ba...tooth-and-nail

                    Comment


                    • Re: 1973 F-250 - Turbo BBF - It's alive!

                      yeah, good call. Even 5 psi is kind of scary, might push the fuel sprayer out into the engine compartment... that would be what we would call "bad."
                      Flying south, with a flock of bird dogs.

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                      • Re: 1973 F-250 - Turbo BBF - It's alive!

                        Especially since Fuel is involved - as Beagle stated - probably best to TIG... I'm fuzzy on cast stuff, as I recall there's a rod and tungsten set up that's more forgiving in the case of dissimilar alloys (cast intake, "billet" tube) I'm sure you're buddy will make quick work of it once he gets the set up dialed in.
                        There's always something new to learn.

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                        • Re: 1973 F-250 - Turbo BBF - It's alive!

                          I finally got a little shop time to work on this thing so more. This time I turned my attention back to the heads and in particular, the exhaust ports. Ford cast these things with gigantic thermactor bumps that block the port enough that I cannot stick my finger through. The bumps are not drilled on these particular heads, so they are just a big ole lump of cast iron just clogging up the port. I did one head and called it a night because my hands were buzzing like crazy. Glad I don't do this everyday. I used some of ScottyJ's D3 head pics to pattern my work after. They are not perfect, but are worlds ahead of what they were. overall, I am pleased with how they turned out.

                          On the next head, I think I will drill the thermactor boss with a big bit to reduce the amount of metal I have to cut out with the carbide.

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                          Life is short. Be a do'er and not a shoulda done'er.
                          1983 Mustang GT 302/T5 http://www.bangshift.com/forum/forum...485-bbr-s-83gt
                          1973 F-250 BBF Turbo Truck http://www.bangshift.com/forum/forum...uck-conversion
                          1986 Ford Ranger EFI 545/C6 https://bangshift.com/forum/forum/ba...tooth-and-nail

                          Comment


                          • Re: 1973 F-250 - Turbo BBF - It's alive!

                            If I remember, I lost about 6 pounds of cast iron per head following Scottys pics... did you do any bowl work?
                            Flying south, with a flock of bird dogs.

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                            • Re: 1973 F-250 - Turbo BBF - It's alive!

                              A little. I opened it up to the seat, and just smoothed it a bit. I didn't go too crazy with it. My main focus was getting that boss out and not hitting water. lol It will have back pressure from the turbo, so maxing out exhaust port flow is not as critical as it is with a different setup like a nitrous motor.

                              Life is short. Be a do'er and not a shoulda done'er.
                              1983 Mustang GT 302/T5 http://www.bangshift.com/forum/forum...485-bbr-s-83gt
                              1973 F-250 BBF Turbo Truck http://www.bangshift.com/forum/forum...uck-conversion
                              1986 Ford Ranger EFI 545/C6 https://bangshift.com/forum/forum/ba...tooth-and-nail

                              Comment


                              • Re: 1973 F-250 - Turbo BBF - It's alive!

                                Ported the other head Saturday. This time I drilled the bumps to remove the majority of the metal. Worked sooooo much better. I also remembered to bring ear plugs!!

                                In between letting the air compressor catch up, I drilled the broken studs out of my exhaust manifolds.

                                I am DYING to get these heads done and get this long block together!!

                                Life is short. Be a do'er and not a shoulda done'er.
                                1983 Mustang GT 302/T5 http://www.bangshift.com/forum/forum...485-bbr-s-83gt
                                1973 F-250 BBF Turbo Truck http://www.bangshift.com/forum/forum...uck-conversion
                                1986 Ford Ranger EFI 545/C6 https://bangshift.com/forum/forum/ba...tooth-and-nail

                                Comment

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