Announcement

Collapse
No announcement yet.

262's 85 Fiero SE LX9 F23 swap thread lots of pics

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • ericjon262
    replied
    finally got around to putting the dashboard back in (page 17) hopefully I'll have the cluster back in soon too. anyone got a preference on a boost gauge? I'm gonna need one, that and a WB02.

    Leave a comment:


  • NateD4
    replied
    Your welds look pretty good. I've found it best to put heat into the part and adjust weld bead size prior to moving. That helps keep bead size consistent.

    Leave a comment:


  • NateD4
    replied
    The 360 axis one is what I meant by a radial flow one.

    Leave a comment:


  • 3400-95-Modified
    replied
    My practice welds and what I learned...

    This is all Argon with no back purge on either mild or stainless

    Mild steel Tig


    Inside Mild steel no gas


    Tig Stainless


    Tig Stainless inside, no gas


    and just Tig on two heavy plates...

    Leave a comment:


  • TGP37
    replied
    Originally posted by NateD4 View Post
    What you are talking about is called back purging. When I first got into TIG I had a water jet shop make me the parts for a back purge head. It looks kinda like a shower head. Mine is rectangular about 1.5 x 3" it allows you to keep gas in back of any thin or full penetration weld. For exhaust I recommend a round one with radial holes more like a gas heater or lantern would have.

    Another trick is to shove wet rags into the tube at both ends and put an argon hose in it. Wait a minute or two and it should be purged.

    I've heard of people using rubber balls to do the same. The weld quality inside is usually quite good.

    MIG wise prefer argon but I've heard mixed opinions on CO2 vs Argon.

    The pouring idea is similar to inert gas atmosphere chambers. They can be price pensive. The simplest is an aquarium with a lid. Drexel some holes if you want gloves.

    Other pro grade chambers are inflatable vinyl like bags. You put your part in them. Zip closed like a tent and they inflate... Weld away.

    Shower head, love it. Gonna add that to my mental list of back purging tools to build. I also want to make one that pushes gas around a 360 axis. When placed in the pipe, blows gas onto the seams.

    I can see the chamber being over kill for these projects, but the back purge concepts are great. Love the shower head idea.



    Sorry ERIC, not thread jacking ya.

    Leave a comment:


  • NateD4
    replied
    What you are talking about is called back purging. When I first got into TIG I had a water jet shop make me the parts for a back purge head. It looks kinda like a shower head. Mine is rectangular about 1.5 x 3" it allows you to keep gas in back of any thin or full penetration weld. For exhaust I recommend a round one with radial holes more like a gas heater or lantern would have.

    Another trick is to shove wet rags into the tube at both ends and put an argon hose in it. Wait a minute or two and it should be purged.

    I've heard of people using rubber balls to do the same. The weld quality inside is usually quite good.

    MIG wise prefer argon but I've heard mixed opinions on CO2 vs Argon.

    The pouring idea is similar to inert gas atmosphere chambers. They can be price pensive. The simplest is an aquarium with a lid. Drexel some holes if you want gloves.

    Other pro grade chambers are inflatable vinyl like bags. You put your part in them. Zip closed like a tent and they inflate... Weld away.

    Leave a comment:


  • TGP37
    replied
    Originally posted by 3400-95-Modified View Post
    That makes perfect sense and I've always loved those videos you see online where they illustrate gas that weighs more than air.

    http://www.youtube.com/watch?v=1PJTq2xQiQ0
    Ahh that's great, never seen that before.

    Leave a comment:


  • 3400-95-Modified
    replied
    That makes perfect sense and I've always loved those videos you see online where they illustrate gas that weighs more than air.

    Get enchanted by a aluminium foil ship floating above ground on sulphur hexafluoride (gas significantly denser than air) at the Physikshow of the University ...

    Leave a comment:


  • TGP37
    replied
    On the topic of welding, Argon is 38% heavier then sea level atmosphere. Knowing that I imagine the shielding gas flow like water instead of drifting away like smoke.

    I bet capping a pipe to be welded could as simple as standing up right and "pouring" argon into it like a cup of water. The argon leaking out the seams to be welded would be very well shielded all around.

    To be even more curious, I bet a gas wall (simple steel box w/ no top) could be placed around the working piece to gather the Argon. Almost like submerging the work in a pool of Argon. Being heavier most should stay in the area as long as it can't escape downhill.


    Knowing this, it would make sense to introduce the shield gas from above instead of from below.



    This I gathered on my own, input? It seems right. I do remember learning something similar about Argon asphyxiation in a closed area, if a bottle ever depressurized rapidly. That and it would be cold as #$%&!
    Last edited by TGP37; 03-11-2013, 03:46 PM.

    Leave a comment:


  • 3400-95-Modified
    replied
    Originally posted by TGP37 View Post
    Well yeah, but watching others will allow their knowledge from hours of trial and error to be passed on to you w/o going through as much trial and error yourself.

    In a way, learning from others is simply learning something you would have figured out on your own, just sooner.
    I agree... I welded stainless and saw what the inside of the weld looked like and then watched the video and went OHHHHHHH that's why it looks like hell inside... Trust me, I do agree that hands on learning is nice but hands on testing blind is no fun it's just time wasting... It's nice to have some info to do the testing with so you can master a method that's known to work, rather than trying to re-create the wheel and figure out all the tricks on your own.

    Leave a comment:


  • TGP37
    replied
    Originally posted by ericjon262 View Post
    the best learning to me, is with a torch in my hand. the youtube stuff helps, but it's nothing like holding the real deal and doing it.
    Well yeah, but watching others will allow their knowledge from hours of trial and error to be passed on to you w/o going through as much trial and error yourself.

    In a way, learning from others is simply learning something you would have figured out on your own, just sooner.

    Leave a comment:


  • ericjon262
    replied
    the best learning to me, is with a torch in my hand. the youtube stuff helps, but it's nothing like holding the real deal and doing it.

    Leave a comment:


  • TGP37
    replied
    Originally posted by 3400-95-Modified View Post
    Not only is the weld "better" The overall penetration and performance of the weld is much higher. You will see this a lot with Stainless tubing. It will oxidize the worst if you don't back purge the weld. I did some mild steel tubing with my TIG and the inside weld looked just as good as the outside so its not AS critical on mild steel.

    You can also split after the regulator and then cap one side of the pipe, put small holes in it, and cap the other side with the hose going in it and then just turn the gas on for a min or two to purge out the air. It's amazing what you can learn sitting at work watching stupid TIG welding videos... LOL

    This is the video I saw. http://www.youtube.com/watch?v=02U0H15_WEg
    Watching on you tube is a good place to learn.

    Welding is definitely an art in it's own field.

    Leave a comment:


  • 3400-95-Modified
    replied
    Originally posted by TGP37 View Post
    If you use a Tig, get a splitter for the argon feed after the regulator (or get another regulator) and stick that into the pipe your about to weld.

    Removing the oxygen behind the weld REALLY helps with welding exhaust pipe like this. After I tried it, I realized how much better my welds can be.


    For a mig, not sure what gas to use behind the weld (should be the same Mig type gas used) but the concept should be the same. Remove the o2 on the backside of the weld.

    There is no shame in grinding down the welds to make it look nicer, and get to inspect for leaks easier that way.
    Not only is the weld "better" The overall penetration and performance of the weld is much higher. You will see this a lot with Stainless tubing. It will oxidize the worst if you don't back purge the weld. I did some mild steel tubing with my TIG and the inside weld looked just as good as the outside so its not AS critical on mild steel.

    You can also split after the regulator and then cap one side of the pipe, put small holes in it, and cap the other side with the hose going in it and then just turn the gas on for a min or two to purge out the air. It's amazing what you can learn sitting at work watching stupid TIG welding videos... LOL

    This is the video I saw. http://www.youtube.com/watch?v=02U0H15_WEg
    Last edited by 3400-95-Modified; 03-11-2013, 09:31 AM.

    Leave a comment:


  • TGP37
    replied
    If you use a Tig, get a splitter for the argon feed after the regulator (or get another regulator) and stick that into the pipe your about to weld.

    Removing the oxygen behind the weld REALLY helps with welding exhaust pipe like this. After I tried it, I realized how much better my welds can be.


    For a mig, not sure what gas to use behind the weld (should be the same Mig type gas used) but the concept should be the same. Remove the o2 on the backside of the weld.

    There is no shame in grinding down the welds to make it look nicer, and get to inspect for leaks easier that way.

    Leave a comment:

Working...
X