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1973 F-250 - Turbo BBF - It's off to a new home!

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  • BBR
    replied
    Pic of how it goes together. Definitely looks like I built it. Not perfect but not stupid either.

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  • 74NovaMan
    replied
    Looking good!

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  • BBR
    replied
    V-band came in, and I welded it in last night. The last joint to weld will be the open pipe (sticking up) into the expanded section below. This v-band should allow me to disassemble everything easily without too much trouble. I suppose I could have just clamped it at the expanded section, but it would have been all but impossible to pull apart should I ever need to.

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  • BBR
    replied
    Boo. The oil return fitting I put in the timing cover is going to be just a little too high. I thought the turbo was going to be mounted higher so it was a crap shoot anyway. I suppose I will just put one in the pan.

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  • BBR
    replied
    After everything was welded and bolted up tight, the up-pipe turned out to be a tiny bit short. You could assemble it, but once it was together it was applying quite a bit of pressure on the rest of the system. So I chopped it and stretched it out so now it slips together without any pushing, pulling, banging, or other shenanigans.

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  • BBR
    replied
    Hot side it mostly finished. I still need to tweak it a little in a couple of places. I decided to just run the wastegate straight out for exhaust priority and because it was easier to make.

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  • BBR
    replied
    This part is definitely a learning process. The next time I do something like this I will start with the hardest to access area and work my way toward the more easily accessed areas. I made the mistake of starting with the easy areas and that made the hard area really hard. Haha.

    Last night , I did more work to the crossover pipe and have it mostly finished. I only had to bolt it on and unbolt it about a thousand times. Clears everything nicely and tucks up tight. I am very happy with the pipe routing and the ability to access everything under the engine easily.

    I need to tweak the section that goes under the motor mount to the vertical 90° bend a little as it's angle changed slightly after getting the pass side manifold connected. No biggie though.

    Currently deciding on wastegate placement/angle.

    Option 1- horizontal placement: Come straight out of the vertical 90° and either vent exhaust straight down to atmosphere or up and over frame rail to down pipe.

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    Option 2 - angled upward placement: Angled up underneath smog pump/alternator bracket. Exhaust exits straight down to atmosphere, or over frame rail and down to atmosphere or over frame rail and back to down pipe.

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    The angled upward position might be easier to access for spring changes or whatever.

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  • BBR
    replied
    Took advantage of some free time this evening to build 98% of the hot side piping. I'm beat. I must have crawled under that truck 500 times.


    Exhaust come from driver's side under the bell housing to this junction. This blended pipe took me longer to make than most of the rest of it. Haha. I really planned the routing to allow me to remove the converter bolts and starter without havingnto drop the exhaust.
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    This is the pipe that the transition blends into. It snakes up between the frame rail and motor mount to the 90 degree bend up towards the turbo.

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    Turbo flange small dog leg and 90 degree bend. I know it is not bolted down, I just stuck it there for a pic.

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  • BBR
    replied
    I needed a turbo drain flange, but rather that try to order one and maybe get one that would not fit, I just decided to make one. 1 flat piece of steel, 2 small holes, 1 big hole tapped 1/2" NPT and one -8AN to 1/2" NPT brass fitting is all it took. The bolt holes in the turbo are *supposed* to be metric, but were actually 3/8" NC. Lol

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    Last edited by BBR; March 7, 2019, 08:00 AM.

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  • BBR
    replied
    Thankfully I do not have a lot of bends to buy and it seems the local place is competitive price-wise with the on-line retailers I looked at. It is just surprising how expensive they are.

    I did not get a thing done this weekend. We made a quick (if you can call 506 miles one way, quick?) trip to San Antonio to watch the Girls 5A High School State championship basketball game. Jake is a varsity cheerleader, and we have several connections to the team and coach so we though it would be fun to go. This is the second year in a row they have played in the championship game. They won again this year in a nail-biter.

    Spring break is coming up and the wife is headed to NYC with some friends, so I am hoping to get a lot done while she is gone.

    Just for fun, my fav pic of Jake the cheerleader. "Nothing to see here, just holding a person over my head." Haha

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  • Beagle
    replied
    I'll just leave this here... the u bends are cheaper than the steel to copy a manual version of this, but ...



    4:20 or so. Apparently it didn't like the copy at time.
    Last edited by Beagle; March 2, 2019, 01:54 PM.

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  • BBR
    replied
    Bought some exhaust bends today. Ouch.

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  • BBR
    replied
    Holes tapped and chips vacuumed up. I just screwed that blue fitting in to make sure the threads were ok. I also secured the fuel lines to the frame.

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  • BBR
    replied
    Fuel system is fully plumbed now. Just need to secure the lines to the frame in a few places.

    Exhaust manifolds are soaking in Purple Power so they will be cleaner.

    The oil supply line to the turbo is in place now too.

    The "plan" (we know how well those turn out sometimes) is to finish the hot side to the turbo, install the Dominator and my 1 wire HEI distributor in order to break in the cam, because I *know* they work. Then go live with the efi.

    Today's project was drilling 2 more holes in the intake that I should have done before I put it in the engine.... These holes are for a water temp sensor and mechanical water temp gauge.

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  • BBR
    replied
    Click image for larger version

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ID:	1232601 I made more hoses yesterday. I only have one more to make and the fuel system is plumbed!

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