custom exaust, good idea or bad?

ok, so i was thinking the other day, about how beded-trucks have the "stack pipe exaust" and i was thinking about makeing a custom exaust comming up through the rear floor of the blazer, then going straight up, out of the roof and hooking over, kind of like a big 18=wheeler, just more stealth and hidden, i was thinking this might be a good idea, but i would like other peoples opinions and sugestions on how to make this work. i am going to be makeing a rough sketch of the plan after i get a little more advice form you all. ANYTHING will be helpfull! thanks!

Exhaust in cabin=bad & won't pass inspection

Unless I read it wrong and you meant something else by routing the exhaust through the floor of your Blazer.

Yeah, are you thinking of running the exhaust through the cabin??  Don't think that would work at all.  Not only would you not pass any inspection, buy you would have a huge amount of heat seep into the cabin and I don't think any type of heat shield would solve the problem. 

PLus, just a little bit noisy.

yes i know that it wont pass any inspection, but in south carolina there is no vehicle inspection required by law so you can do almost anything you want to. i was also going to enclose it in with 1/4" sheet metal to reduce noise and close the floor and roof around it, it would have to be air tight.

<center>
<img src="http://i121.photobucket.com/albums/o213/57_jets_football/vfrews.jpg" alt="Photobucket - Video and Image Hosting"><br><br>
</center>
 
<center>
<img src="http://i121.photobucket.com/albums/o213/57_jets_football/vf.jpg" alt="Photobucket - Video and Image Hosting"><br><br>
</center>
 
so there is some crappy desighns to kind of help see what im talking about

you might be a redneck................

No need to poke fun.  I would have to question the safety of such a modification...  Hot exhaust gases passing through enclosed sections of the passenger compartment would not be something I would do...

With that said, anything can be done.  Just depends on how much you want to do it.  Only thing you will gain is looks and if that is what you want, go for it!

I wouldn't risk it.  You don't want that heat, noise, or possible exhaust leak in your cabin.  It is not gonna sound that great either, stacks only sound good with diesels.

well i was going to do an airtight welded area around the pipe its self on the inside part of the blazer, just have it exposed on the outside

OK, I would have to agree with Swartlkk if you have enough ambition anything is pretty much possible.  I personally think that this is going to be the proverbial "can-o-worms."  You may be able to seal it off effectively from the cabin, you may be able to dampen the sound well.  How are you goingt  o deal with the heat seepage??  1/4 inch steel is pretty stout, but it will transfer heat onto any surace that it is touching.  Hot metal+surrounding material=FIRE.  Don't really want to deal with that do you.  BUT, if you have the time, money and materials to pull this off, by all means attempt it.  Just make sure you have all your I's dotted and T's crossed before doing it.  I would hate to see you put all that time and effort into something like that and then lose your whole ride because of an inadequate heat shield.

"Are you on F****** Glue?"   just kdding, sounds like a very cool/not very well thought out idea, but would be awesome to see, and very innovative.

lol

The whole idea of the exhaust system is to get the gasses out 1) as fast as possible, and 2) as safely as possible.   You're negatively increasing both.

If ya wanna be unique...dump it out right behind the front wheels.  Then you still get your exhaust gas to the driver, andddddddd the loud sound inside

  heat = bad.... and that would really make it hard to sell some day with 2 3'''' holes in the floo and roof.. but to each his own i guess...