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

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  • Beagle
    replied
    VROOM! Happy New Year!

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  • BBR
    replied
    I fiddled with it a little more a couple of nights ago night and did some datalogs. Still refuses to stay idling.

    A few things I am going to do first are:
    1. Check pickup to 36-1 wheel gap.
    2. Add a 500 rpm row to my timing table. The Mustang idled at 1100 so the lowest row was 1000. This motor is around 800-ish. Probably not a big deal, but it needs to be corrected.
    3. Disable using a target afr table. I do not have the wide band connected yet.

    I really just want it to start up, run and idle at this point.

    I still need to swap the diff center section and install the driveshaft before this thing is driveable.

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  • BBR
    replied
    At lunch, I bumped afterstart enrichment way up to 100% and set it for 60 seconds.

    Started up and predictably idled for 60 seconds then died.

    I am liking this much better than the Ranger MS project. It was crazy rich and as a MS noob it took me forever to get it leaned out.

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  • BBR
    replied
    Man I love this thing!!! Can't believe the transformation!
    Hard to believe at one time you were concerned with a broken valve spring in the 460...? OR you were hauling lawn mowers in it...?
    I have to read stuff like this to motivate me to get off my ass and go DO SOMETHING!!!!
    Haha thanks!

    It has been a fun project even if the intended use target has moved so many times!

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  • andy30thz
    replied
    Man I love this thing!!! Can't believe the transformation!
    Hard to believe at one time you were concerned with a broken valve spring in the 460...? OR you were hauling lawn mowers in it...?
    I have to read stuff like this to motivate me to get off my ass and go DO SOMETHING!!!!

    Leave a comment:


  • BBR
    replied
    I feex.

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  • BBR
    replied
    When it backfires and blows the intake tube completely off at you, it may be time to go back and double check some stuff. Haha.

    In my case, I managed get a distributorless ignition system 180 out. I'm stupid.

    Well, actually I put the plug wires back on according to a pic of the Mustang motor I had. However that pic was taken early on in that project and the wires were not on the proper coils!! I found some later pics from when it was running and verified that I currently have it wrong. haha.

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  • BBR
    replied
    I am still plugging away at this truck. I bought a new hard drive for a newer laptop I had (Win10 instead of XP) and it took a while to get it all configured and up and running. This computer will also run my HPTuners, so now I have all my efi tuning software in one place.

    Yesterday, I calibrated the TPS, and started routing the vacuum/boost lines to the wastegate, Megasquirt, brake booster, bov and fuel pressure regulator. It didn't take long to realize that adding a vacuum manifold would be a good idea, so I ordered one for the truck and one for the Mustang.

    I also did a key-on test hoping to hear a priming pulse from the fuel pump. No dice. My hope of using the Ford efi fuse/relay box has not been very successful thus far. Oh well.

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  • BBR
    replied
    Back to wiring. I backtracked a little because I felt like I should wire the MS to be turned on/off with a switch rather than with the key. The reason is, so I do not have to have the key on in order to connect the MS to the laptop. It is more convenient and also does not power up the igniter and coils. This is how it was set up in the Mustang and it worked well.

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  • BBR
    replied
    Drive shaft came in today. 1350 joints, 3.5" dia. 54" c2c.

    Oh and I pressure tested the fuel system.... No leaks!!

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  • BBR
    replied
    Finished up the new rail the other night. I did not test for leaks yet because the battery was dead and I was out of time to mess with it.

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  • STINEY
    replied
    Yup. Time for the drill doctor.

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  • Deaf Bob
    replied
    Suspect the center is not...
    Hole fine if drill with other.. Sure sign.
    If one cutter longer. That makes slots.

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  • BBR
    replied
    Whoo Hoo! Finally working on the truck again!

    I decided to play with the old rail, drill a bunch of test holes to get this situation figured out. First, I painstakingly set up the drill press so that it was drilling straight and square. I chucked up the 17/32 bit just to see if maybe last time I had something crooked. I drilled it, then pulled the bit and the hole was way bigger than the bit. Interesting. I chucked up a 1/2" bit that I really though wasn't in very good condition and drilled a 1/2" hole in the rail. Removed bit and slid it in. Spot on. Bit fit the hole perfectly. So I decided it must be the bit. The 1/2" makes long aluminum curls and the 17/32" makes chips . I suppose the chips do not clear well and causes the hole to end up larger. I chucked up the 17/32" in my 1/2" hand drill and just made a quick finish pass in the 1/2" hole. Checked it afterwards, perfect size. Whoo hoo I have a technique. I practiced a few more times on the old rail perfecting my technique and getting my depth set correctly for the shoulder down in the hole. Then it was go time on the new rail. Drilled the 1/2" holes, smaller feed holes and then hit them with a 17/32" clean up pass and it ended up perfect. Wheeeeeeeewwwwww.

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  • BBR
    replied
    Yeah, 8 years ago. Haha.

    We "what if'd" one time too many and someone REALLY wanted our house. Good market, very motivated buyer and we own a property we could move right into. It worked out perfect. Goodbye big house with a million stairs, hello smaller house with NO stairs!

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