Progress Thread Slow Boat To China

Discussion in '1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-' started by hoopty5.0, Dec 3, 2012.

  1. The pinholes are from dirt/oil. It's called a gas inclusion,..It's exactly like a fish eye in paint,..and for the exact same reason. The metal you were welding may have had some coating on it as well that caused the reaction.
     
  2. The holes in the welds are known as porosity, and are exactly that, holes in the weld filler causing the material added to be porous. This can be caused by a few different things, mostly from improper amounts of shielding gas. where is your regulator set at? is there a breeze or fan blowing while your working? Even a small fan has enough power to blow the shielding gas away from the area you are welding causing this.
     
  3. The regulator is set somewhere between 15 and 20 lbs. My only thought was that low bottle pressure was causing it - Im down to around 1500 PSI.... Someone forgot to close the valve one night.

    I did have the fans off too.
     
  4. IMAG0286.jpg

    Here is an example without porosity. This was done on the roof of a building welding a Drycooler down to the roof. I had to build a cardboard tent to stop the wind but had decent results for a 110v mig welder.
     
  5. I usually run mine at 15, and i'll run the bottle down to 300 or so before I'm worried about filling it
     
  6. At one point in time, there was a turbo build going on here. Unfortunately, a new job 6 months ago has hoovered all spare funds and time as well. I've been trying to muster some motivation lately to get back into the garage, but there's always something else going on (or I'm exhausted). Anyway, I went out tonight to make my headers.

    First step was hacking off the flange:

    c8td.jpg


    Then clean the metal:

    dqxh.jpg


    Then weld the V-band flange on:

    ...oh... Forgot to take that pic...


    Then I cut off the EGR flange and patched it:

    yxlt.jpg


    And Voila, turbo headers:

    bwn0.jpg




    I need to keep plugging away at this. Got lotsa parts to install and even more fab work.
     
    stangboy and A5literMan like this.
  7. Progress! Very well done sir.
     
  8. Are you going to wrap these headers or at least paint them black?
     
  9. I'd like to ceramic coat them. I have a buddy who does powder coating in his garage and does a nice job, I'll clean them up and give the headers and rest of the hot side to him
     
    stangboy likes this.
  10. I thought exhaust manifolds were cast iron. Are LS manifolds cast steel?
     
  11. My initial guess was cast iron, since I made a couple tacks and they immediately broke off, but as I went, the blending of the bead got a lot better sooo....Maybe they're steel? Its all an assumption - I've seen it done dozens of times with good success, so we will see.

    If this doesn't work, I can always take cheap SBF headers and weld on LS flanges. I've seen that done with an SBF on3 kit on a 6.0 and it worked very well.
     
  12. Simple way to tell has already been done. Grind the metal w/ a grinding/flap wheel. If it doesn't spark, or barely gives off any sparks it's cast iron.
     
  13. That's "decent"? What does " Excellent" look like?
     
    stangboy likes this.
  14. Id say its cast steel then. I remember trying to keep the sparks away from my beer :p
     
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  15. Power tools and beer!! Nothing can go wrong here. Lol. Glad you've found some free time for the car.
     
    hoopty5.0 likes this.
  16. I'll snap some pics from an upcoming project for ya ;)
     
  17. A local buddy with a turbo 351w car gave me some stuff tonight:

    5atm.jpg


    42bu.jpg


    The turbo: yes, it's from a tracked vehicle that moves dirt. I'm going to use it to mock up the turbo flange since it's a T6. It'll be March before I can buy the turbo and I refuse to wait.

    The tubing is 2.5" for the crossover to use with some bends I already have. Also notice the merge. Teehee I dont have to make one!

    I also drilled out the spot welds on the sway bar mounts, ground down the other crap, and began filling holes on the shock towers. I'm hoping Santy Claws will bring me some Scott Rod panels for the inner fenders that I can weld in. I really don't wanna make them again like I did in the Hoopty Build...

    obh8.jpg


    beme.jpg



    One of these days, I'll take the motor apart and fix the main cap I put in backwards. I'm assuming I need a new bearing?
     
  18. Yeaaaaaaaaaaa beeeeeeeer!

    I would put in new main bearings, yes. They're cheap and good peace of mind, in case you warped them by installing the cap back asswards.
     
    stangboy likes this.
  19. Oh My God! I have a fraction of the holes in my strut towers that you have. (I'll bet I have 7-8 total per side). That passenger side looks like it has some sort of metal acne. If I would've had that many holes to weld, then grind smooth, I would've just said to hell with that and left it. It's times like these that I'm thankful for the first gen, heavier strut/k member factory construction of the earlier model years.

    All I can say to the fact that you have to do soo much more than I do is : Nyaaaah:p

    Again, I'm so confused here, and you can blame the onset of senility on me asking this... (again?).

    I thought the car that was getting the LS was the one that you cut the entire front clip in front of the strut towers clean off, w/ plans to make some sort of tubular replacement?:shrug: And if this car isn't that, where the hell did that one go?