So the reps at Big Gun and BMWHD both say the vortex is not for prolonged usage and can vouch that it will 'deteriorate,' but you choose to ignore that? Whatever dude...just thumb your nose at it. They said it will "deteriorate"...not "melt." Big Gun's inferior metalergy in materials used comes to the forefront again. Heat it up a little, add chemicals from the exhaust stream and the corrosive process begins.

 

Here's a post from bmwhd later on in that same thread:
Even though he said not to, maybe we should ask Todd how he knows?

 

Well its really not a big deal either way if it falls apart I will just buy the bad part and start enjoying the ride again

I don't really get to worried about all the this might happen stuff after dragracing a 1428cc engine on NOS and spending $800 on a pipe , the cost of this bike is half the cost of one race motor . That is why I enjoy this bike lots of fun and not the big $$$$$ to do it

I say mod this bike and have fun if something fails fix it and move on.......

BIG POINT TO THIS IS HAVE FUN GUYS

 

Perhaps I should clarify my experience with the Vortex insert (I actually had two of them, as you'll see).

I owned a KLR650 that had the basic stage one mods (jets, K&N filter, open airbox) and a Big Gun full exhaust with race core. I set the bike up to be a LD touring dual sport with hard luggage and a ton of other stuff. I used the bike for several long distance rides including a Saddle Sore 1000 and a 12 hour endurance rally in which I covered over 700 miles.

It was a few months before the rally that I installed my first Vortex core to try and quiet down the Big Gun for my daily commute. I replaced the packing at the same time using Big Gun packing material. So I had race core, fresh packing, Vortex insert and a new spark arrester.

During the rally, I spent considerable time at WOT due to high winds and rain and the need to maintain highway speed. During one long up hill run at speed, the bike started to stumble and act like it was starving for fuel. Not much later at a fuel stop, I noticed that the bike sounded different and when I looked at the muffler I saw that the end cap was gone along with the spark arrester and the Vortex core. Two of the four bolts that held the end cap on were gone and the race core and packing were half way out of the pipe. At the time, I assumed that my not using locktite on the bolts was the reason it fell apart.

As it turns out, Big Gun confirmed for me some months later that the Vortex is too restrictive for WOT use or any sustained high speed running. The back pressure was what had caused the poor performance on the top end and resulted in the muffler bits blowing out the back of the pipe. Unfortunately, before I learned that, I purchased another Vortex core, spark arrester, and end cap and installed those along with fresh packing. Shortly after that I sold the KLR to a gent that rode it 500 miles home. He had the exact same performance problems on the highway and it was after he called me to tell me about it that I started researching the issue and realized it wasn't just lack of locktite that made the pipe self destruct.

So I'd recommend you buy the quiet core from BG if you want a long term solution to the noise of the race core. Keep the Vortex for short runs only.

 

There it is from the man himself. See thats where the name Big Gun Came from..... Just joking lol [sm=signs003.gif]

 

Big Gun installed, pretty relaxed, I will have to dissect to repack. I like quiet performance!!! IMO.

 

Another thing to watch for his described here:

http://biggunexhaust-test.com/

I didn't have this particular problem with mine but I've heard of many that have. The EVO series is supposed to be better about this.

 

I am quoting myself hahahaha lmao. is that legal.....?


Sad part I own one. Got 2500 miles on mine and these are hard miles. I ride it like a race bike that I know it is not...

I think I got a good one probably made middle of the week after break no hurry....

 

ok thats scary.. i sure as hell hope my pipe doesnt do any of that....