Rusted Out 1970 850 Spider Fix-Up

Discussion in 'Rear-Engine Fiats' started by Daniel Gibson, Apr 30, 2019.

  1. Daniel Gibson

    Daniel Gibson True Classic

    Location:
    Texas
    Several days into brazing all the holes that showed up after the acid bath, and I think I am ready to seal the tank. Gonna let it dry until tomorrow....then in it goes!
     
    khnitz likes this.
  2. Daniel Gibson

    Daniel Gibson True Classic

    Location:
    Texas
    Ok, the sealer is in! I will let it sit for a day or so, and fill it up and see what happens!
     
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  3. Daniel Gibson

    Daniel Gibson True Classic

    Location:
    Texas
    Here is is after sitting for 20 minutes full of water. I think it is leak free!
    9E844ECF-E7E8-4011-958D-A40742081ED7.jpeg

    Just needs a quick layer of paint and a new sending unit. Done!
     
    kmead, motoTrooper, NM850 and 3 others like this.
  4. ramona300

    ramona300 True Classic

     
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  5. Daniel Gibson

    Daniel Gibson True Classic

    Location:
    Texas
    Whilst I had the engine out, I decided to take a look at my starter. The upper bolt was kinda acting stripped, and the starter stopped turning right before I pulled the engine. It was probably wiring related, but what better time to look into it. The upper bolt was indeed stripped, so I used my tap and die set to bring it to a smaller thread. I also oiled the starter and it does seem to be turning smoother.
    FD9D5A32-1F43-4033-85A6-88BC8F034277.jpeg


    New sending unit! Just need to drill it out for the return line. Then time to reassemble!

    59995DEA-A1A6-4753-AC68-A2A406C9A08B.jpeg
     
    khnitz likes this.
  6. Daniel Gibson

    Daniel Gibson True Classic

    Location:
    Texas
    Oh, and I forgot! I got replacement for that busted throttle linkage on my carb. Thanks Karl!
     
    khnitz likes this.
  7. If you still have the starter out, it might be worth opening it up and checking the brushes as well as cleaning & lubing everything. My brushes were just about shot and the inside was full of a greasy sludge owing to where it is located on an X.
     
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  8. Daniel Gibson

    Daniel Gibson True Classic

    Location:
    Texas
    New versus old fuel sending units. Notice the new one does not have a return line. Time to start drilling!
    33EBA54A-C004-4BFC-BF7C-55C60D62FADD.jpeg

    Ewww!
    E72F1C88-578E-45B6-95BC-79942BC7F9D7.jpeg


    So I cut off a section of pipe from the old sending unit, did some drilling and jb welding, and voila! Off to the tank!
    EA4C4914-B9C8-49FE-B755-353127BA8873.jpeg
     
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  9. Daniel Gibson

    Daniel Gibson True Classic

    Location:
    Texas
    Seems like we have been here before...anyway, tank is in, engine is in. Need to finish hooking up all peripherals, and let us see how she runs!

    7DF65613-7FD7-45F0-B1D6-94F5D4EC251C.jpeg
     
    khnitz, kmead, NM850 and 1 other person like this.
  10. kmead

    kmead Over half way.

    Location:
    Michigan
    I need one of the following things:

    • To move to a warmer climate where I can work outside more.
    • Build a good workshop where I can have heat and work out of the weather.

    At the moment the latter versus the former looks to be the more likely approach.

    Looking forward to the next steps along your path.
     
    Daniel Gibson likes this.
  11. Daniel Gibson

    Daniel Gibson True Classic

    Location:
    Texas
    Warmer climate for the win. We are just about into spring here in Texas, so I should be all set. It is already starting to green up! You can always visit Michigan in the summer.
    Dan - ex of northern Indiana.
     
    kmead likes this.
  12. Daniel Gibson

    Daniel Gibson True Classic

    Location:
    Texas
    No new pics (like there is anything you haven’t seen yet), but a quick update. Gas is pumping cleanly, and the car is running. It will not idle, so adjustment time is here. Oh, and the water pump was leaking where it bolts to the block. I think tightening up the bolts cured that. Progress!
     
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  13. kmead

    kmead Over half way.

    Location:
    Michigan
    On the idle, make sure you have good seals at the carb to the manifold and manifold to head. Does your carb have a idle shut off valve or a proper needle valve?

    I have had to make my own gasket out of slightly thicker material to deal with issues around the waterpump to block. You can only tighten it so much.
     
    Daniel Gibson likes this.
  14. gene cooley

    gene cooley Autocrosser

    Location:
    Henrico, Va
    A gallon can of carb dip with the parts basket will work wonders on even the dirtiest carbs.
    Take it completely apart and let the parts sit for a while in the can. Keep an eye on the parts, you can leave them in too long. Metal parts only.

    Remember to use a face shield and chemical gloves, work in a well ventilated area; this is some evil stuff.

    MWB has an inexpensive rebuild kit.

    If you don't have the drip tray, try to find one.
    It "can" affect the idle, not always, but often enough.
     
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  15. Jefco

    Jefco Daily Driver

    Location:
    Portland OR
    The last can of this I had ate it's way out the bottom of the can!
     
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  16. Daniel Gibson

    Daniel Gibson True Classic

    Location:
    Texas
    The carb has been cleaned completely...now several times! May take one more time.
     
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  17. Daniel Gibson

    Daniel Gibson True Classic

    Location:
    Texas
    So, the choke cable was jammed. No choke, no start. Last two days spent working on that between rainstorms. Got that working, and now the car is running again! Yay! Not idling without the choke, but baby steps. Let it run for about 5 minutes, and noticed a not pleasant smell. Shut it down and took a look. Either I have a glasspak I blew out, or there was a mouse nest in my muffler. I bet it is not done yet either.

    Tomorrow...ensure all gauges are working and start on idle.
    B6CDA3B4-4CAC-4F54-90B5-6F50F40B0824.jpeg
     
    khnitz likes this.
  18. Daniel Gibson

    Daniel Gibson True Classic

    Location:
    Texas
    Ok experts...what is causing my carb to sputter like this? The car is idling ok, and I have opened up the carb again and made sure everything is clean and blown out with high pressure air. Any thoughts?



    Thanks!
     
  19. Is it my imagination or do I see gases being blown up out of the right hand barrel. If yes, could be a cam or ignition timing issue or a bad valve.
     
    Daniel Gibson likes this.
  20. Daniel Gibson

    Daniel Gibson True Classic

    Location:
    Texas
    It is not your imagination. Raw gas is sputtering up as well. I get the feeling the carb is running super rich, but I am at a loss as to why. Anyone know of a good rebuilder for these carbs?

    It may indeed be timing. I will check that next. I am trying to not think about cam issue yet! Thanks!
     

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