+057john this will be discussed in part 2 of the manifold video segment. you should always back purge when welding stainless steel, titanium or inconel. this will make for a stronger weld. fit up is critical to ensure getting good results with your welding. zero gaps and a properly sized bevel will help you get consistent welds. typically i do not do a root/cap pass with manifolds as i bevel the piping enough to get full penetration with a single pass. it is really personal preference though- some people like to do a root pass that is back purged, then a cap pass that is not. in my experience, i have always had success with a single pass on all welds. amperage, cup size, tungsten selection and filler selection/size will all play a factor in your results. these will be discussed in more detail in the next video. thanks for watching! Aaron

actually most manifolds use mild steel flanges as opposed to stainless flanges , stainless tends to warp more anyways

+tarik adams the collector used for this turbo manifold is a Vibrant pre-cut collector (part number 2454). using a laser cut collector will save you a tremendous amount of time and headache associated with cutting your own collector. i have cut many in the past and they are hard on saw blades and difficult to get consistent results. this is why i chose to go with a Vibrant pre-cut collector. Aaron

If money and availability of material was not an issue, inconel would be my first choice, personally. We offer 304ss as a cost effective material for exhaust fabrication. When welded properly, 304ss will provide excellent longevity for the value. Failures are often caused by poor manifold design, poor welds, or thermal wrapping the material.

Hey Ercan, can you shoot us an email so that we can help make a better recommendation for what you are working with? tech@vibrantperformance.com

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304 stainless steel.

It was probably for an intake manifold.

turbo manifolds and exhaust housings literally get glowing orange hot. if you use metal that can't take the heat your turbo can actually melt off of the manifold.

easier for a DIY kit to be welded for NooB builders

Also you dont need a turbo support

it isn't ideal to reuse a flange. the effort to cut it off a manifold would likely cost more in cutting/time than getting a new flange.

Effort to cut off a manifold? You mean running it through a bandsaw?

I've done it before. Depending on the manifold, it can be messy and you will never get the same result as with a new flange. Cleaning/prep will be required to remove contamination from the material before welding new runners onto it. Cutting it off may also release tension in the material and it may not be flat once you cut it off. Can it be done? Yes. Would I do it? No. I prefer to work with new, clean materials for the best results.