Sealing VBands

[Boosted98gsx]

I just got my new vband exhaust made, and it's hissing at me. How do I get these things to seal better? Looking for answers from people who have experience, not guesses.

 

[wishihadatalon]

http://www.xceedspeed.com/forums/showthread.php?t=28268&highlight=nuclear I would check out that stuff.

 

[Boosted98gsx]

I cannot see the pictures without registering.

 

[wishihadatalon]

Sorry. This is his post on the rx-7 boards. http://www.rx7club.com/showthread.php?t=467421

 

[MaNGiNa24]

My v-bands sealed perfectly, but I remember reading about someone who used a bit of silicon gasket maker, the same you'd use on a valve cover or something similar. That'd be the easiest/less expensive way to do it.

 

[Maglin]

Every V-Band that I've installed has some sort of ring (fire ring of sorts) on one of the flanges and the other of course has a milled out depression for the ring to go into. On tight fitting connections it's usually required to beat (tap with a hammer) the flanges to get them aligned properly while you are appling pressure with the clamp. I've only maybe installed about 300 or so v-band flanges so I might not totally be an expert. Usually it's best to tap on the clamp and not the piping. I tighten them down pretty damn good then knock them into place and tighten some more. Never had one leak on me yet.

Their are also certain flanges that are designed to be used with a special copper crush washer. The outside is a copper jacket and inside was asbestos. Well since asbestos isn't in production anymore they are using something else now that doesn't last as long but works for about 1000 or so hours of high temp use before burning away and leaking. Hope that helps. If not I hope you figure out a better way. I've never found one.

 

[Boosted98gsx]

Hope that helps. If not I hope you figure out a better way. I've never found one.

I am currently using high temp silicone to attempt to seal them. I will let you know if it blows out or not.