TFS: DIY Custom Exhaust from Scratch

Every car needs some kind of exhaust system. When you want something better than you can buy off the shelf, or something more unique, you'll need to know how to build it from scratch with nothing more than some mandrel bends. In this episode, Justin the Fabricator breaks down the fabrication of a complete exhaust from start to finish on a Maza FD RX-7.
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[@TheFabricatorSeries]

👇👇ABOUT SOLAR FLUX AND BACK PURGING IN THIS VID BELOW 👇👇 kzbin.info/www/bejne/d3q1iICepNCYb6s

[@klasiko2455]

The Fabrication Series can i go to your shop next time i go to vegas really fan of your job ??? great job sr

[@knonfs]

So, for exhaust fabrication (DP, MD, catback), its better (less expensive) to use solar flux for back purging, than back purged with argon? I am guessing its a matter of money?

[@TheFabricatorSeries]

Masacote motors Sure. Just send me a message ahead of time so I can be here.

[@TheFabricatorSeries]

knonfs Solar Flux is a less expensive alternative.

[@jeffs9920]

What about the back side of where you welded those hangers? Were you able to get any flux in the pipe behind them and if not with the tension and vibration is there any risk of cracking?

[@G-GFactoryMade]

awesome work, taught me some things i didn’t realize and i can’t tell you how many times i’ve done an exhaust! love rx7s but mad respect when you asked please don’t slander my clients car. you’re the man!

[@jamesj.litteriojr.433]

Very Well Put!!!!!

[@haydenb8853]

Who can't at least admire the blood and sweat poured into this car. Nothing sounds better than a turbo rx7. Except maybe a cammed out classic big block, but those are everywhere

[@ekman1050]

I think it sounds great! I am a plumber and a tig welder. Usually working on big construction areas with big stainless and steelpipe welding. Great video, thank you very much. I am going to weld my own exhaust for my Golf R and found this educational. Exuse my spelling, i am from Sweden. Keep up the good work!

[@nathanthreeleaf4534]

I wish I would have watched this before doing my own custom exhaust. I would have known a couple things to look out for ahead of time. Very helpful info and good lessons in here.

[@FriedEggsandJellyfish]

Ohhh man you can't beat the sound of a brapping rotary! And beautiful welds like always my dude!

[@lakessbm]

It wasn't even brapping lol

[@irreccon]

​@@lakessbm it was trying to 😂

[@neryrivas8898]

I can't express how insanely informational this video is for beginner fabricators. Thank you.

[@kiyoshi8657]

I don't want this to come off petty but thank you for balancing your music and removing the hard loud transitions. These are so much more pleasant to watch back to back to back

[@unavailable8681]

Like you said, exhaust is a personal preference! This one is well made, which is what really matters. While I enjoy a well muffled rotary, because you get the full range all the way from a smooth buzz, to a furious scream, some wants all of the fury, all of the time. And that is perfectly fine! A rotary never sounds bad anyway! It looks great with the twin tips as well!

[@TheFabricatorSeries]

If I was 10 years younger, I'd totally dig the volume. I love the sound, but I'd like it more quiet or on demand if it was my ride. It's all up to the person driving it haha.

[@Paios]

Lol i like the part where you were like "please don't say my client's car sounds like a fart. I know it sounds like a fart, but he likes farts" XD

[@AVSCDvideoproduction]

😂😂😂😂

[@InClaymont]

🤣🤣🤣 This comment is hilarious.

[@heathknight9359]

I love you’re style! I’m brand new to your channel. My dad started a muffler shop in the 70’s, he and I have worked together for years. I have no book education in welding but he taught me a great deal. October of last year he passed suddenly and now I’m here learning with no safety net. I completely agree that in taking down the part as much as needed is a life quote of a good welder/ fabricator! My ears like certain tone like everyone, but if you make your customers happy then you’re doing it right!

[@vladorlovsky6623]

You got some serious skills Justin. Great job!

[@joshfoley8862]

You're right, sometimes there is no proper way of doing something and you just need to eyeball it. About the tension in the exhaust, it is better to have the exhaust hang in a relaxed state. This will minimize vibrations and unwanted noises. Limit hanger movement if the exhaust swings around too much. Nice video and great work!

[@kevinkirk4285]

@12:45 I wholeheartedly subscribe to (and practice) the "Take it out, make adjustments, put it back in, repeat at least a dozen times" method. I watched the whole exhaust series and then recently managed to pull off fabricating my first ever exhaust system, using a builder's kit. Aluminized 2.5"mild steel and MIG with CO2. It's not pretty but but it's effective... and it'll get it done for my off road project. I should have gone with the V-band clamps from the start but it's not too late to add a pair. The best part is that it all comes out in two assemblies with just a few bolts. None of it is trapped in the chassis. I'll call that a win... Thanks for a great series!

[@gregsochor]

Love the sound of an angry rotary, but I bet your neighbours just love you for firing that up late in the evening!

[@RickSaffery]

It was a real treat watching you work the exhaust on the RX7. Color me an instant subscriber. Your shop setup is the cat's pajamas too! Nice job!

[@onlyychevys]

I really enjoy watching your videos! I'm retired now but it sure is fun to watch a true professional now that I can't do my thing any more. Thumbs up!

[@Simple5.0]

that exhaust sounded good. i wish you gave us a before and after. nice work. you’re a pro.

[@StrykerWolf92]

"Your Ad Here" sticker is hilarious

[@lynel1985]

isnt that a Jon Lajoie thing?

[@InClaymont]

The car sounds sick. I love a good rotary brap brap brapping away.

[@chrisreinhardt5136]

Nice work as usual, when I do them, I back purge, no filler. You get a full penetration.. I used do sanitary welding, very similar..

[@wesleybrabant3595]

great video..always nice to see some one take pride in thier work

[@nicko6477]

Love the details you add in the editing. Makes a lot of sense using the 3D lines

[@benjaminm7857]

ive been watching a lot of videos on how to weld and i think yours are the best out there very informative and thank you.

[@flubyux2]

Beautiful work. Needs about 6 more mufflers. These bad boys are insanely loud even with the same exhaust that would be sensible db on a piston car.

[@meezylife673]

Let’s admit NO ONE expected that exhaust sound 😂😂😂😂😂😂😂😂😂😂

[@InClaymont]

Except anyone familiar with rotary engines. It is a typical rotary sound. Sounds even better (louder) with a hood exit.

[@Azletrack]

That's just the sound a rotary with some power makes, I dig it

[@caddiman9834]

Nice job. Love the Brap of a rotary engine. I grew up around them and learned how to work on them.

[@biartchnicyndi]

Awesome work on that exhaust

[@TheSilentStar]

Duuuuuude, those welds at 6:30, very nice.

[@smurfshanker058]

This video was well done. Good commentary and video angles

[@mechanicalmanny494]

This kind of works needs a lot of patience, awesome work 👍

[@mrpaddyhunter]

That sounds sweet mate Nice job Justin

[@Socalfishingadven]

Good video bro! I’m a welder and fabricator and this was very informative thank you for the lesson.

[@scoomagee]

awesome job and thats what a rotary shuld sound like love to hear it warmed up and revved to about 10k

[@MrJarrell76]

Nice car and nice work.... great job Justin!!!

[@JeremyKonzJames]

Great tutorial. Hate the sound but great tutorial and very nice job on the exhaust over all.

[@ar15fantate]

THAT was a professional install, folks!

[@JohnDOE-ho3ht]

Nice work. I like the sound of my V8’s but for that engine it sound awesome. I have been dabbling with rig welding exhaust and find your videos very helpful. Now all I need is a lift and some good band saws. Saw your video on good saws as well. But working out of my house with attached garage I can’t justify or have room for cool tools like that. So I have been purchasing angles. And thanks for the hook up on that as well.

[@c-note4146]

I want to start applying some hands on practice in exhaust tuning...looks like a fun project. Thank you for all that you share! And as far as your clients car...I’m a huge fan of the braaap! I miss my old FC

[@Bultish]

daym you keep on truckin! last vid i saw was bending some tubes for a roll cage! Still awesome and good advice 💪💪🤘

[@danielh4995]

I wish I had a bandsaw, those really do make custom exhaust/ tubing work much easier. Exhausts are some of my favorite welding projects. I just finished a stainless axle back section for a racecar to replace a blown out muffler. I will have to try some of that flux, back purging it with argon was a bit of a pain. Very nice work, and nice car. Im sure it was a bit loud with only the resonator but if thats what the customer wanted that is all that matters.

[@henrycoombe119]

fantastic workmanship,great vid!Henry

[@alfred7136]

Great work, and that rx7 sounds amazing!

[@fentonbrewer]

Fantastic sound beautifully made

[@JimNaeve]

Well done, impressive work - appreciate the time and energy spent putting this together, regardless whether you're pushing 1100 or 400 CFM, this is good, usable information.

[@3ch0_17]

I've made a few exhausts in my time and I can back that this is all correct. Building exhausts takes a long longgg time, amplified by any restrictions the customer puts on you and the material the exhuast is made of. And yes, alot of the exhaust making process is just a bunch of educated guesses where you hope if you are wrong, you just over shot so you can cut back. Actually, no math is required to make an exhaust. You can do it all with a sharpie, band saw, a few peices of paper and a few clamps. Don't forget a welder and maybe a soft faced hammer.

[@GTrainRx7]

It's always better to mark something you don't need than not mark something you do! Consistent good habits are never a bad thing.

[@jamesgraham2437]

I liked the exhaust work lots of good ideals good work. Graham

[@psy06]

Mazda's greatest achievement in automotive history. how tall are you to barely fit into 1 ?

[@surfieboy89]

Rotaries aren’t my cup of tea. But that sounds killer man. Awesome job mate and cheers for the tips.

[@robertward1993]

The old timers in west virginia calls loud 4 bangers fart noodles....lol , nice work dude

[@matthewsimmons7795]

It sounds great and looks it too

[@MiklaDfar]

DAMN... that is some nice work... wish I was closer, I would bring my Jeep SRT8 and E92 M3 to try a custom exhaust from you... though I might want to do some pie cut bends for looks...

[@christoffer1973]

Love your videos 👍💪 You and your videos give me inspiration and ideas. Keep videoing From a Norwegian 🇧🇻 subscriber/viewer

[@turboflush]

Looks like my exhaust. If you don't fit.. I def would not. Lol thanks for filming that

[@jonathonher]

Very clear documentary!!! Took in a lot of info.

[@edwardolopez3368]

A lot of good tips, at start up I thought you were making popcorn lol

[@PapaBruno]

Oh man, that's my dreamcar! Fantastic job! I'm loving this channel so far, man.

[@davidrucci]

Your videos are absolutely fantastic. Just wanted to say thanks! 🙏🤙

[@slimer240]

Love the sound of a rotary....brap brap

[@bernardlatuner5134]

Congratulations from France ! :-D You did a verry good job !

[@williamzoom]

You trying to get in it gave me flashbacks to some of the stuff I built in the 90s:)

[@noyneyco]

hahahahaha...the intro to enter is so generous hohohohoho

[@FrankRuiz66]

Nicely done!

[@fredvarao3894]

Sounds like a popcorn factory!

[@jasoncampbell4723]

Sounds good. Looks good sweet RXR!

[@piotreq17]

Hello i am not a specialist in welding, this is beautifull car and great work, but when you weld v-band, try to have it connected to second side and tied up by bolt, this will prevent bending one side by heat.

[@chriso1373]

Are you kidding? That sound was like sex for my ears! High revving rotories, subaru boxer burbble, a big v-twin, and certain diesels are pretty much the best engine sounds out there.

[@TheFabricatorSeries]

Chris O I totally agree.

[@bikedeefer]

I'm with you man! My 05 WRX 2.0L with Headers and Turbo back 75mm pipes is music to my ears at any RPM.

[@CoolCarVideo]

Thanks for a great tutorial!

[@eddieellison7679]

Dang! Best explanation yet amazing video

[@Freetheworldnow]

Excellent work!

[@jayinmi3706]

We'll put it in and take it out until the customer is satisfied! lol

[@e36fanatics]

its easy to make things like these with welds like those... amazing id love to learn to weld like that

[@lewerim]

🤣 That opening scene. 🤣 That me and every vehicle not based on a truck chassis. 😏

[@keatonbeckham980]

for anyone who cares, I believe that is a vibrant performance bullet style stainless steel resonator and it is absolutely stellar

[@l2icknielsen]

That FD is so sexy. Love the exhaust. Love the brip brapz it made. That gave me a lot of good info on how to mock up a system I’m about to diy so thanks for the video. 👍

[@TonyHammitt]

I think it sounds exactly like it's supposed to. Seems to be a track car, what with the lack of cat, so just let that sucker breathe. Nice work

[@muckman5509]

Can you make a video on how to weld the hanger rod onto the pipe? I find this way more complicated than pipe welding

[@joelwilson3319]

Professional job well done, im very ocd with when it comes to doing my own fab or having someone do it 4 me. I never tried that solar flux I'm looking forward to trying it.

[@waynewojo1336]

Nice video, been welding 30 years (steam turbines) and still learning I like the v bands.. Not to be an ass but noticed all right handed welds. Tell my newbies learn left your right will follow cause sooner or later your gonna need it ... P.S. right handed only is half a welder.. Just saying Take care

[@michaelmoseley7566]

I liked it sounded great.

[@rileyreed5902]

Beautiful sound I had captions on and KZbin thinks a rotary's exhaust is music

[@GaryLamb2020]

How much do you charge for a custom exhaust?

[@gyffjogofl7676]

Great work!

[@ViktorLucca]

For me that was dope af bro...great job!

[@DaniBuilds]

This was sick. The car also!

[@supakat500]

A street port would be nice on that exhaust setup.

[@KaoticFdr1]

supakat500 it sounded like it had a mild port

[@ddrhero]

I think it sounds good

[@wojciechpiecha2177]

it's rotary, sounds good!

[@toyotatherapy9685]

Sounds so good

[@waymenlawrence2064]

Very nice work I would like to have seen it with the blue welds would of been sick

[@1.4tmechanicscruze61]

my guy, (

[@paulmorrey733]

Thanks Justin

[@michaelmartinez5217]

Ahh the joys of vanity.

[@justinkeys4461]

These cars are cool but I don't fit in them either lol. Great video, very informative 👍🏻

[@lilyoungjay0000]

Not bad I like it learned a lot sounds good for what the car is

[@luisa.irizarryromero5764]

Good job

[@Slotmehandpay0912]

looks great! very nice job

[@gremlinsbreath]

Must be nice to have skills that are actually useful.

[@Ryan............]

Great video.