I want to set up my exhaust so I can easily swap a test pipe in and out and it seems that vband clamps are the way to go. There are a number of companies making them and I was hoping for some advice on who makes ones that will seal well and last. I don't want junk on this, since it will cost some money to have the set up welded up and I also don't want exhaust leaks.

The ones I've identified so far are Vibrant, Burns Stainless, and Dynatech. I know that there are others out there as well. I like the male/female lip on the Vibrant ones -- that seems like a good idea.

Any advice from someone who's had good or bad luck with particular brands of vband clamps?

Thanks.

 

www.atpturbo.com

 

Burns Stainless These are what I've used...two years old and not a lick of problem.

 

The Vinbant ones on my BR TBE leaked slightly, since they warp during welding. I took the pieces down to my local machine shop and had them planed flat. No more leaks on the parts that could be done (the parts that are real long are a ***** to hold onto while you run the flange against a horizontal belt sander).

The ATP flanges are much beefier and probably warp less during welding, but I would still get it professionally tigged to minimize warpage and then plane it flat if necessary.

The Burns flanges that can be cut for a viton o-ring are the most promising, if money is no object. We use vband type flanges with Viton O-rings here at work, but they are on extremely heavy 4" piping used in high temp (900c), corrosive vacuum systems down to the millitorr range. They work extremely well.