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
    Sorry, I was not very clear. The last picture shows what I SHOULD have. The picture above it shows the broken one I CURRENTLY have. The idle adjustment screw is completely snapped off.
     
  2. Daniel Gibson

    Daniel Gibson True Classic

    Location:
    Texas
    Also, if anyone has a spare clip that is used to clip on the throttle rod, I need one of those as well. Thanks!

    IMG_2742.JPG
     
  3. I know that this may be a bit of a kludge, but have you considered adjusting the length of the throttle rod as a temporary fix? It looks like there may be a fair amount of thread to play with but I guess what is key with this approach is that there is something pushing against it on the other end. I know this would work on my X1/9 because at one time I had the opposite problem. I could adjust the idle speed screw on the carb with no effect - turned out the linkage rod was set too long and was preventing the idle speed from going down.
     
  4. Daniel Gibson

    Daniel Gibson True Classic

    Location:
    Texas
    Hmmm...I do love a good kludge. I don't want to mess with the nylon attachment point, as I think it would love to break. Let me think on this.

    But, if someone does have the right part, I am interested!
     
  5. I've got those same nylon joints on my DCNF linkage. They look ugly but have been working fine since 1980.
     
  6. khnitz

    khnitz Daily Driver

    Daniel, I have a couple of spare motors here that came with my parts car. Let me see if I have that piece (unbroken) available. I would certainly have a whole carb, too.
     
    Daniel Gibson likes this.
  7. Daniel Gibson

    Daniel Gibson True Classic

    Location:
    Texas
    Thank you so much for looking. The correct part would be ideal, as opposed to what I have been formulating in my noggin.
     
  8. khnitz

    khnitz Daily Driver

    Hi Daniel, here are some pictures of the extra OEM carb I have, as well as close-ups of the actual part that is broken on yours, I believe.
     

    Attached Files:

  9. Daniel Gibson

    Daniel Gibson True Classic

    Location:
    Texas
    Ok, time to repair that carb piece. Let me stress that I am doing this just to get it running...as soon as I can get the correct piece, this is outta here.

    First, cut a piece of heavy sheet metal. Still got lots of that around!

    IMG_2762.JPG

    Second, make sure that the metal you are working with is steel and not pot metal! I checked it with a magnet. Once that was determined, I bent the metal and welded away! If you do not have a wire feed welder, get one. They are so darn useful! After failing to get good penetration the first time, I welded again, and success! Quick drill and tap, and we are ready to go!

    IMG_2763.JPG

    And here it is installed. My angle was a little off, but that will not hurt anything. Seems to work...screw goes up and down, and the plate goes up and down!

    IMG_2768.PNG

    It will work for now!
     

    Attached Files:

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  10. It might be stronger now than the original.
     
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  11. Daniel Gibson

    Daniel Gibson True Classic

    Location:
    Texas
    Well, after a 2 day battle, I got the car running. However, there is a problem. My efforts to desludge the gas tank must have failed, as the fuel pump was so sludged up it would not work. I disassembled it, and scraped the gunk out of it, and got it working again. But the fuel filter I put on between the pump and the carb is looking mighty dirty already. Rats.

    So, here is what I am going to do. A fuel filter before the pump and after the pump, and keep spares in the car. See if I can "wait out" whatever yuck is still in the tank. This should be enough for me to get it running correctly and drive it a bit. Then I can decide if I need to pull the tank again.

    I might be able to drain the tank as well. That might be a better option after I drive it a bit and get it all in solution.
     
    khnitz likes this.
  12. I had a similar problem when I put my car back in service after several decades. I thought I had cleaned out the tank, and the car ran fine for about a week. Then, one day I went to start it and no luck. I went to the engine compartment and both my pre and post pump filters were plugged. Apparently it took a few days of soaking in gasoline for all the crap I did not see when I first cleaned the tank to go into solution. My pre filter was a Fram that did not do much filtering at all but fortunately the WIX 12um post filter saved the carbs. My guess is that your tank could get worse before it gets better. It might be easier to just clean it out. I had really good luck cleaning my tank with OxiClean (the laundry stuff). I discovered it on some motorcycle sites where they need to clean their tanks without destroying the paint job. I was pretty amazed at how well it worked, and it is biodegradable.
     
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  13. Daniel Gibson

    Daniel Gibson True Classic

    Location:
    Texas
    Did you yank your tank? I hate to pull it all out again. Ugh.
     
  14. I did. It did not take long. Sorry I didn't do it the first time.
     
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  15. kmead

    kmead Over half way.

    Location:
    Michigan
    How about filling the tank with gasoline, letting it sit for a few days and then let it drain into an gas can by gravity with a paper coffee filter or two to filter the result. You could do this a few times to try to get as much of the gunk out. You could even pressurize the tank from the top either from the fill or if you have a return line using an air pump to pressurize the line to speed up the outflow.

    I wouldn't want to have to pull the tank unless there was no other way around it. Do you have a USB or similar camera you could have a look into the tank with?
     
    Daniel Gibson likes this.
  16. twincam69

    twincam69 True Classic

    On the same note...if you have access to some E85 gasoline, put in a few gallons and let it sit then drain. That will dissolve a lot of the gunk even better than regular gas.
     
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  17. Daniel Gibson

    Daniel Gibson True Classic

    Location:
    Texas
    I did pull mine, and I cleaned it as best I could. Those darn baffles really make about half the tank accessible. But this tank was really bad. What I could see looked good before I put in the sealer.
     
  18. Daniel Gibson

    Daniel Gibson True Classic

    Location:
    Texas
    I did get a camera like that for my birthday! Maybe time to put it to use.
     
  19. Daniel Gibson

    Daniel Gibson True Classic

    Location:
    Texas
    I forgot the seatbelts! Duh! So, go to put them on, and oops...this car only came with lap belts, and the three point belts I bought will not fit. So, I broke out some lap belts I had removed from the Amphicar when the kids got too big to fit in it. They should work just fine.

    IMG_2801.JPG

    Now, back to cogitating about the gas situation.
     
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  20. kmead

    kmead Over half way.

    Location:
    Michigan
    Are you sure that there are not the upper mounting holes? Many cars from that era (including X’s) had the threaded hole next to the door. Though given how far you have had the car apart I suspect you would know :)

    Alternatively I have noticed you have a welder and have demonstrated some minor amount of skill using it...
     
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