VGT turbo question.
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From: S CAL
VGT turbo question.
My question is when the turbo goes into overboost due to the veins sticking are the veins sticking closed or are they open. Also does anyone know what material the veins are made from. The unison ring looks like steel but the veins looks like they are cast from some other kind of material. When corrosion sets in do the veins rust like the unison ring does.
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From: S CAL
Good I was wandering about the veins when looking at them because they appeared to be of a different material. I have not had one apart that was used as of yet. The only one That I have had apart is a remanufactured turbo that seems to have the housing machined so that the unison ring now rides on a much smaller surface. So most of the rust then forms on the unison ring and on the turbo housing where the pegs are. Thanks doubledee715
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From: S CAL
[QUOTE=LvTitan]i was wondering myself since they looked to be a different material too.
The weight of the veins feel to be on the light side which makes me think they could be something other then steel.
The weight of the veins feel to be on the light side which makes me think they could be something other then steel.
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From: Las Vegas
I dont actually have the first clue what they are made from, but I have a hard time believing there made from steel, maybe high carbon steel, but I would think given the environment they live in that it would be some kind of alloy.
I'll be interested to see what the actual answer is!!!!
I'll be interested to see what the actual answer is!!!!
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From: S CAL
[QUOTE=heavyiron]but I would think given the environment they live in that it would be some kind of alloy.
Well if the veins do not rust when the unison ring does then maybe they are some kind of alloy.
Well if the veins do not rust when the unison ring does then maybe they are some kind of alloy.
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From: Las Vega$
they are obviously some kind of alloy if they're steel. i'm not saying they are titanium, but they are super light and have about the same weight. if you've seen them and held them in your hands, you'd know that they don't weigh nearly as much as they look like they should if they were steel or iron...
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From: S CAL
Well my reasoning for asking all the questions is I am considering on finding out if the unison ring can be made from another material that is able to withstand the heat but it will not rust. That way you never end up with two surfaces together that are capable of rusting. And with the surface area that the unison ring rides on now machined down on the remanufactured turbos from ford it could help eliminate any sticking problems with the veins.
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I've never had my turbo apart, but after reading about all the problems people have with rusting and sticking it got me to thinking. I do alot of welding with a wire feed. I use a product called "welders black magic". It is a....for lack of a better term, paint that you spray on the nozzle of your wire feed gun and prevents sticking of weld spatter. The "paint" goes on at a matte black color, but if you buff it with a rag, it will shine up. One application will last for 8 hours of constant welding.
I believe that there is a graphite compound in this product because it feels "slick" to the touch, and with this coating on the turbo parts, maybe rust wouldn't have a chance to start. I think the coating would hold up to the turbo due to the fact that it withstands a much higher heat in welding. If you apply the coating to steel and try to weld through it, you cannot. I am just thinking here, does anyone see why this wouldn't work?
I believe that there is a graphite compound in this product because it feels "slick" to the touch, and with this coating on the turbo parts, maybe rust wouldn't have a chance to start. I think the coating would hold up to the turbo due to the fact that it withstands a much higher heat in welding. If you apply the coating to steel and try to weld through it, you cannot. I am just thinking here, does anyone see why this wouldn't work?
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From: S CAL
Well redmt77 that is an interesting idea. Just remember these parts are constantly rubbing on one another and the heat can be as high as 1300 degrees. I am not familiar with the welders black magic and do not know if would hold up 50,000 miles down the road or 3 years from now would it still be working. Not everyone with a 6.0l engine is going to have this problem with corrosion but I know I will because of my driving habits. The truck sits for 5 or 6 days at a time and that will allow for rust to set in. Thanks for the info.
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From: Las Vega$
1300 degrees is not realistic for most of us. mine sees well upward of 1500 and approaching 2000 degrees on almost a daily basis.
a ceramic coating would be too thick and they would bind up i'm afraid tim, but i think if you run the truck hard when it does run and blow that crap out of them every once in a while you'll be fine. my stock turbo was almost 4 years old and had over 60k miles and the vanes operated like the day they were new. i drive my truck hard.. HARD
a ceramic coating would be too thick and they would bind up i'm afraid tim, but i think if you run the truck hard when it does run and blow that crap out of them every once in a while you'll be fine. my stock turbo was almost 4 years old and had over 60k miles and the vanes operated like the day they were new. i drive my truck hard.. HARD