Quick help on exhaust systems

[Ordinarily_Greater]

Soo are they the same as hard line water cooling? looking to make a dual rear exit system with this as the tip of it.

 

https://www.carid.com/different-trend/different-trend-black-powder-coated-series-tip-1817477325.html

 

yeah until the time of writing this i haven't got any replies on the car enthusiast thread regarding this same question.

 

Thanks

 

#feelssadman

[Yoinkerman]

No it's an exhaust system on a vehicle it's nowhere near the same.

 

You can have 6 tips if you want but other that that your question isn't very clear on what your intentions are

[Ordinarily_Greater]

1 minute ago, Yoinkerman said:

No it's an exhaust system on a vehicle it's nowhere near the same.

 

You can have 6 tips if you want but other that that your question isn't very clear on what your intentions are

I was searching out information and my understanding is an exhaust system is basically how to route your air output with the most efficient way (at least how i wanted my setup to be).

 

and i thought it was the same as hard tubing because the basics seems to be similar.

 

Since i was just starting to learn the car mod atmosphere, i am planning to get a car to mod (not that soon). Either a Civic FD series or a Evo X. So thats where I wanted a dual rear exit system.

[harryk]

Is it the same as hard line water cooling? I suppose in the sense that you are bending and routing tube yes but the tools and skills are a very different domain.

 

Making a custom exhaust system is a common thing in the car modification community but requires certain skills and equipment to do it yourself. You'll need some form of power saw to cut the steel tube, a big tube bender, and a welder to put it all together. Its a big barrier to entry but if you want to do it then go for it. Otherwise you can go to a muffler shop and have them build it. You could even ask if you can help them out in the shop and be involved in the process. 

[bimmerman]

There is much more science involved in exhaust design than in water cooling. As in, gas flow dynamics, pressure wave equalization, scavenging, emissions, etc. Water cooling is much more analogous to....well, the water cooling system in nearly all engines.

 

Read up on Burns Stainless website for a decent primer. A properly designed exhaust will make more power and torque in the rpm range the car will be targeted to.....at the expense, usually, of other rpm bands AND cubic dollars.

[Ordinarily_Greater]

30 minutes ago, harryk said:

Otherwise you can go to a muffler shop and have them build it. You could even ask if you can help them out in the shop and be involved in the process. 

Mhm definitely this way then

 

How will this work out is probably :

1. I have the aftermarket piping then have them assemble it
2. Build a custom piping from custom materials too? also in the shop

[Ordinarily_Greater]

@bimmerman

those science factors must be tightly accurate which i couldnt put my head on lol

 

so spending less than $600 for a new exhaust system targetting better than stock performance may be a good start? because so far guessing im gonna spend more on the piping material (stainless steel definitely)

[Yoinkerman]

If you're starting out on the car scene you get premade exhaust kits, especially for imports.  They did all the heavy lifting you just put it in.

 

You also don't put a dual exhaust (two exhaust pipes from the engine) on an in-line 4, you just put two tips on at the end or after the muffler.

 

Hardline tubing also doesn't care much about all your bends and stuff, making it "efficient" with minimal routing is more about aesthetics than cooling.

[bimmerman]

5 hours ago, Ordinarily_Greater said:

@bimmerman

those science factors must be tightly accurate which i couldnt put my head on lol

 

so spending less than $600 for a new exhaust system targetting better than stock performance may be a good start? because so far guessing im gonna spend more on the piping material (stainless steel definitely)

If power is your goal, figure out what chassis you want and then what exhausts the competitive racers are using, keeping in mind gains from exhaust only are minimal compared to gains when intake/tuning/fuel/FI are also fiddled with. If sound, seek youtube, but all 4 cyls aside from s14 and f20c sound awful, especially turbos. Loud 4cyl engines are just obnoxious, though sure extra power I guess. If quiet and power is the goal, spend lots of money.

 

The engine is an air pump. The better it can breathe, the more power it can make, but won't necessarily.

 

Material is almost irrelevant for exhaust. Yea you want stainless but everything is stainless until you get into specialist exhausts that cost a ton.

 

Flow is the key variable, but not in isolation, and not without accounting for tuning.

 

There is no budget range here as that is highly chassis specific. Buy something off the shelf from a reputable brand and be done. Just keep in mind that you can very easily make your performance worse by buying a "Race Exhaust" that alters the powerband drastically. Case in point: E46 M3 common Race exhaust will provide stupendous top end power, but gut everything below 4000rpm to where it's significantly slower than a stock car right in daily driving RPM range. Racecar needs aren't street car needs.

[Ordinarily_Greater]

21 hours ago, Yoinkerman said:

If you're starting out on the car scene you get premade exhaust kits, especially for imports.  They did all the heavy lifting you just put it in.

 

You also don't put a dual exhaust (two exhaust pipes from the engine) on an in-line 4, you just put two tips on at the end or after the muffler.

so.. for a stock engine civic it shouldn't be configured with two pipes from engine but single pipe then split to two way out?

 

also i found this invidia dual rear exit for the FD2, which i like and want for it but my guess is the stock engine won't utilize it much?

right here for the exhaust

 

also i want approach a symmetric layout for the hole out (called as "tip"s?) each side one or two

[RAS_3885]

23 hours ago, Ordinarily_Greater said:

@bimmerman

those science factors must be tightly accurate which i couldnt put my head on lol

 

so spending less than $600 for a new exhaust system targetting better than stock performance may be a good start? because so far guessing im gonna spend more on the piping material (stainless steel definitely)

Also, if your state does emissions testing make sure you budget for a catalytic converter. Some aftermarket kits are catless.

 

Actually, you should put a cat on a road car regardless, but that's your call in the end.

[bimmerman]

3 hours ago, Ordinarily_Greater said:

so.. for a stock engine civic it shouldn't be configured with two pipes from engine but single pipe then split to two way out?

 

also i found this invidia dual rear exit for the FD2, which i like and want for it but my guess is the stock engine won't utilize it much?

right here for the exhaust

 

also i want approach a symmetric layout for the hole out (called as "tip"s?) each side one or two

It depends. It is impossible to say whether one is better than the other. Exhaust design is an optimization problem for a number of variables (eg, powerband, weight, noise, sound, flow, and smell) and there is no perfect system, just the ideal system for your use case.

 

Check dyno graphs for dual vs single on whatever chassis you are interested in. This is a subject you really need to dig into on the chassis-specific forum that you're interested in, not a computer tech forum.

 

But, unless you really want to throw dollars at something custom, buy something off the shelf. Much cheaper and 99% as high performing. I say that having cut and welded a number of exhaust configs (single, dual, big single, big dual, blah) on my car over the years. It's a pain in the ass so just buy a catback exhaust that you like both the look of and the sound of (youtube has allll kinds of exhaust vids) that is designed to fit your car.

[Yoinkerman]

Mostly you want an exhaust you like the sound of if you have a stock engine.  It's not for performance