Hey guys,

I am very unknowledgeable when it comes to exhaust and the differences between them all. Can we have a teaching course on this?

What are the differences between them (chambered, glassed, true-dual, butterfly-valved, etc)

Also, does the exhaust make the gurgling sound on older cars or is that the engine? And mufflers, I thought were to dampen the sound of the engine only, are they doing emissions too?

Basically share what you know on exhaust systems and how they work.

Thanks.

 

I know that exhaust systems allow emissions from the fuel the engine has burned and some it hasn't, to escape or evacuate. That's the bottom line. Some are more restrictive and some are less.....some add to performance and some decrease performance, some are loud and some are quiet, some are pretty some are ugly. Like many other things in life you can make this very complicated and technical or you can pick and choose, based on what sounds good to you and looks good to you........what works. LOTS of variables and choices good luck, wish there was some way we could "try" different set ups without having to buy it, install it, and then take it back off, eat the loss, and try again....
Exhaust tone and db's are like music......in fact our 454 is "music" to my ears while at idle or while running down the interstate at 75mph......it's deep, rumbling, growling, throaty, but, someone one else may think its too loud.

 

Lol I am in your same boat stingray I know enough to admit I don't know anything.

I would say do not do glass packs every cheap *** build for every car owned by some idiot has them. Also they all have done what Tim said they get them warmed up from a very harsh 20 min drive. Then run a garden hose up the pipe. It cracks, breaks melts down the glass inside the muffler. The end result they actually sound loud as **** and kackle nice but not for me. so your vette will sound just like your neighbors camaro, and his mud truck, and his old station wagon and on an on. Glass packs have a very distinct sound and a kackle. That is cool but far too many 350 Chevys have them so IMO they are a generic sound perfect for a camaro. The vette needs something better jmo I am have been known to be wrong

 

To partially answer your question- mufflers do just that- they 'muffle' the sound to a certain degree. How they do it is by running the exhaust through a series of acoustic baffles or past some sound absorbing materials. The art of modifying the sound to what the owner wants and is legal is complex. Mufflers do little or nothing towards emissions-that's done by catalytic converters.

 

Wow!! Anybody that stupid must have a tough time just dealing with life, in general.


Keep the shiny side up!
Scott

 

Haha, I know what you mean. But I can't help but think that the guy who is the best mechanic in the world now started somewhere not knowing what the steering wheel was. Some people learn really early, some late. I just really felt sorry for the guy. He was looking for help from forum members and I am sure was not expecting someone to give him terrible advice. Or at the very least, not know when someone was joking.

That story taught me that I need to be careful with my words when writing on forums or emails, as people will not alway get the emotion behind your written words.

 

Yeah it's hard to feel bad for the guy but at the same time that's kind of sad

 

Watch this stingray it gives you a cut away idea of what your looking for.

 

Jessie, I think you forgot the link.

 

Lol my bad
http://www.youtube.com/watch?v=bKdDu...e_gdata_player

Let me know if that helps

 

Any one have any cut away photos to post of different design mufflers?

 

That is an over-generalized statement. I switched from chambered to glass-pack mufflers because the chambered mufflers I had were too loud and had a terrible drone at some rpms. The glass-packs I've had for the past 2 years (MagnaFlow) do not have any "kackle" either, at idle or any other rpm:


I made the system I have now from from mandrel bent parts from eBay, Summit, etc., with stainless steel Magnaflow mufflers.



This system is a true dual, meaning a "separate" system from header back for each side, even though both sides go through an X-pipe in the middle to mellow and even the sound and to increase the flow a bit too. You can see that each side COULD have gone straight back if I didn't have an X-pipe in the middle. Some people use an H-pipe instead of an X. The benefits of an H-pipe are similar to an X-pipe but to a lesser degree in terms of sound and flow.

A non-true dual exhaust routes exhaust from each into one pipe that then splits back to dual to exit through 2 mufflers. This is more accurately a 2-1-2 (two into one into two) exhaust system, like stock on my '80.

A mandrel is a steel rod or linked ball inserted into the tube while it is being bent. This produces bends that have about the same diameter as straight sections vs. crimped for non-mandrel bends. Crimpted bends reduce the diameter/cross section of the pipe in the bends. The benefit of mandrel bends is that the diameter of the pipe is maintained from straight through the bends.

I hope this helps.

 

yeah i have true duel from the previous owner but no h or x pipe. your system is great and yeah my comment before is a lil unfair. the kackle tends to be on deceleration from the cars i have seen. i think it could be perfect done right but my friends all had them when i was in hs that is problably my hang up on it. A 82 grand prix, a 79 mustang, a 77 4x4 chevy cheyenne, a 77 ford f100, a 78 plymouth volarie, and a 89 geo metro wagon with a 283 v8 in it lol yes geo metrov8. but yeah every body had the cherry bombs we loved em. can we get a video of how your vette sounds mn80?