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This was welded without any filler metal since I forgot to buy it Yes spatter is from tungsten diving and igniting without HF which has a mind of its own on this machine. Sometimes it ignites ok, other times no-go, scratch start only. It sucks. I will probably invest in a modern lightweight machine but since they are very expensive, this one will have to suffice for learning. For actual exhaust work I will borrow professional Kemppi welder.
I grind tungsten with bench grinder in a way that grind marks are toward the tip and only use 3.2mm tungstens since I cant find adapters for smaller diameter tungstens for this old machine.
At the moment I have a bit of a problem with changing piston crown to 4V dish.
Its business as usual here, everybody wants to earn big time since its porsche something.
First estimate for CNC I got was 1500€.. Gotta love the optimism
I also need all the rubber hoses and related stuff, some sort of intake, exhaust, brakes.. Lots of details, but Ill get there eventually..
are those 8v 3.0 turbo pistons?
why not just buy a set of 104/104.5mm 16v wossners for $1000USD and have the right piston from the get go?
Howabout copying Raceboy and just using dummy valves as the relief cutters?
Nah, that method is like fixing teeth with chainsaw. He didn't use those pistons, I guess consistency of 8 cut outs is a bit variable using that method.
If anything I will glue a circular piece of sponge to valve head and dye it so I can dye positions and then mill them with lathe.
Originally Posted by sydneyman2007
people suck... sorry Voith
No problem, they refunded me today. It just makes me wonder how can they run car parts shop if this is the way they pack stuff. If at least they would bend it in non critical seal area, but no..
This was welded without any filler metal since I forgot to buy it Yes spatter is from tungsten diving and igniting without HF which has a mind of its own on this machine. Sometimes it ignites ok, other times no-go, scratch start only. It sucks. I will probably invest in a modern lightweight machine but since they are very expensive, this one will have to suffice for learning. For actual exhaust work I will borrow professional Kemppi welder.
I grind tungsten with bench grinder in a way that grind marks are toward the tip and only use 3.2mm tungstens since I cant find adapters for smaller diameter tungstens for this old machine.
Ah ha, that explains a lot. Your fit up needs to be PERFECT for autogenous (fusion) welds, and no root gap as illustrated in your picture. The 3.2mm (1/8") tungsten could be the root of your inability to strike an arc with HF. It could also explain the amount of heat input. The minimum operating range for 3.2mm tungsten is around 200 amps to produce a stable arc. What amperage are you welding and I am guessing you have finger control to initiate the arc looking at the logic cable. Could you take a picture of your torch or more importantly the collet and or collet body? I am sure I could find a collet that would allow you to run a 1.6mm or even 1mm tungsten.
I will take picture of torch and its components when I come home. It has 4T finger control, no pedal. I was welding in the 60-100 range so definitely wrong tungsten.
What do you think about this welder? Seems decent spec and very nice price..
Check out this link. All tig torches old, new, or knockoffs are based on a weldcraft torch. The above link will give you a good starting point to find the weldcraft number and allow you to search for your parts. If none of the consumables look close post them and I will take a look. Good luck. As for the linked welder all of those Chinese knockoff inverter welders come from one of two plants. The quality is hit or miss. It will either work fine for a few years or have a very erratic unstable arc with terrible current control right out of the box. Should be fine for what you are doing but I wouldn't make a living off of it.
I found the supplier and part list for the torch. They will get me these in few days
Thanks for your effort!
Btw: What do you think about Miller Dynasty 200 DX machines? I really like these and will probably wait for a good price on used one. Do you know any sources other than ebay to get used one in the 'up to $2k' range?
I found the supplier and part list for the torch. They will get me these in few days
Thanks for your effort!
Btw: What do you think about Miller Dynasty 200 DX machines? I really like these and will probably wait for a good price on used one. Do you know any sources other than ebay to get used one in the 'up to $2k' range?
It is a great welder. In your situation starting out I would recommend the SD, the DX can be overwhelming with all of the parameters. Another option that is close to your price range is the syncrowave 210 or the precisiontig 225. Used welders all depend on the seller and I would always ask to weld with it before money changes hand.
Miller is not big here so I'd have to buy overseas. On the other hand there are a lot of lincolns and Lincoln dealership in walking distance from where I work. Invertec v205t Looks good.
08-31-2015, 06:35 PM
Yes spatter is from tungsten diving and igniting without HF which has a mind of its own on this machine. Sometimes it ignites ok, other times no-go, scratch start only. It sucks. I will probably invest in a modern lightweight machine but since they are very expensive, this one will have to suffice for learning. For actual exhaust work I will borrow professional Kemppi welder.
