Home made bi-modal exhaust - Porsche 911 2.8 RSR Build Season 3.6
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- เผยแพร่เมื่อ 13 ก.ย. 2024
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This is a cliffhanger. We need to hear the note through the zoomies! Looks amazing...
Although I've watched every episode of your Porsche 911 RS tribute build, Datsun 240 Z build and your ongoing Alphararri build, in my estimation, this may have been your most satisfying episode I've watched. That’s saying a lot! I absolutely love watching you fabricate, and problem solve. Not only were you able to implement the bimodal exhaust feature, you made it look great too. Congratulations.
You're getting good at this Jeff, keep everyone hanging till the next episode
I'm not easily impressed but that's some of your best work so far.
Wow the patients you have is completely unreal! Wish you lived here in the States!
Great work Jeff. I think you need a new T-shirt ... Home Built by Jeff “Well that was a lot of work!”
Keep up the good work!
Always impressed at your ability, to achieve a great balance...Bravo
Two comments related to my custom exhaust setup in my 911: 1. I have similar setup as you with 2 big baffled mufflers. They tend to get hot, so keep in mind potential problem of ruining the paint in your fibreglas bumper. My setup drones a lot. 2. The electric cutouts do get broken, due heat and vibration. The OEM quality vacuum operated are much better. ! - Good luck with your build! . I have too a 105 and a 911, both hotrods!
Great job on the fabrication Jeff look forward to your next video to hear the difference Rob
Just love your enthusiasm Jeff, you go at the project tasks like a dog on a bone. Some details I'd wonder if I could be enthused enough to take the time to do. You've done good Jeff.
A thought... make up a nice U bracket with speed holes.to go between the top Centre of the silencer to stop them stressing the words on the X pipe section 👍
Nice job... your fab skills are getting better all the time.
I kinda like the exhaust tips long. Reminds me of a Italian sports cars from the 1960s with the long exhausts.
Great work, love watching the process.......that said (in my opinion) it looks goofy! Pipes far to wide and boxes hang to low. I’d put the old one back on or just put smaller single pass boxes on. Or GT3 centre pipes would look more fitting on Harry plus its easier to utilise the bypass motors.
Four day's work? Wow, you must have been EXHAUSTED!!!
Great job! Can't wait to hear it.
Would have been cool to put a valve at the X-over to check performance with & w/out.
PS Auspuff! (Had to be said!)
You have really become quite a metal worker love to watch you plan these metal builds
That was cool, great work! Can't wait to hear it open!
You are a wild man Jeff!!
I have to admit Jeff, I like the profile of the earlier muffler, this new set looks “bulky” like an overfilled diaper, too bad a slimmer muffler set in stainless wasn’t available.
Great build Jeff well done mate
Nicely done, Jeff. You still continue to impress me with your skills. Obviously your TIG welding skills are getting better all the time. I am jealous!
Great looking exhaust Jeff! Definitely cheaper than buying one. My C63 AMG valvetronic exhaust was $2800 USD
Wow that was a lot of work !
Keep up the great work Jeff.. IMO the welding is leaps and bounds better every week that goes by 👍
exhaustinating... top build as always!
Great work. Well done mate!
Try 2 Flowmaster super 10s. Tip to tip they are 12 inches long. The case is 6 inches & the inlet & outlets are both 3 inches each. Very nice sounding
Turned out far better than I expected - nicely done 👌
Awesome job as usual......
Love the change of MUSIC , finally , thanks for the awsome videos enjoying alot .
awesome work by the way
Love your work! But that looks like a heavy exhaust system. I would probably have gone for one system for the street, and one for the track. With V-bands, it is pretty easy to swap. Keep up the good work!
To be honerst I doubt the old muffler was restricting the powder, but it was a bit nasty.
Common Porsche knowlege, x-pipe doesnt do anything other than lower the noice, can even decrease power.
X pipes might be benefical in a uneven fire engine like an american V8. But ever that is debateable.
jeff when welding stainless use a respirator some bad stuff in fumes from stainless
Your workmanship and attention to detail is right up there Jeff - nice job. Can’t wait to see it through to completion. I’m thinking it would look good with a set of quad oval tailpipes as per many 997 upgrades. Just my 2cents.
That's a great looking exhaust, I can't wait to hear it roar!
The only thing I'd do different is to (as someone mentioned before me) add some bracing between the mufflers to take some stress off the x-pipe. I'd also consider adding a flex bellows thing on one of the sections between the header and the muffler to compensate for thermal expansion. It could wear the header bolts over time with the heat cycles if not taken into account.
Anyways, keep it up, you're the best youtuber around when it comes to DIY automotive projects!
Hans says "Ya sehr gut es der exhaust".
Great work 👍🏼👍🏼
Looks great, can't wait to hear it, but I think you might have problems with the heat on your rear bumper. There isn't much clearance for anything there
Yet again Jeff, you never disappoint, can’t wait to hear this, respect brother 🤘
love it jeff.
One of the most interesting episodes yet! Can't wait to hear the straight through version. (Need to clearance the bumper a bit though?)
I may have to emulate the switchable modes on my project
I hope you plan on putting some heat management between the mufflers and your rear bumper.
It was amazing to watch you put that together 👍
You did it the hard way, like always. 💪
Amazing that you were able to get cuts good enough for fit up with a cut off wheel, I know I wouldn’t be able to do that lol!
Such a visual improvement big fella!
Great bit of modifications to the exhaust 👍
Man! Your level of fabrication is just admirable!
I did something similar with ready made valved muffler (from ebay) in my XR and hooked the activation button to my Vipec (Link ECU's older brother) to also activate variable length intake valve. Currently I'm in the middle of setting a secondary ignition map to activate too - thus giving me a sport button functionality. More conservative map is used with exhaust valve closed and more aggressive map is used when the valve is open. I bet you could play with dual ignition maps with Link ECU too, should you wish to do so.
👍Nice job.
Old welds vs new welds 😬. Looking good, might need some heat guards on the bumper for the loud button.
Well done again. Coming along nicely
Simply put, brilliant! 😊
Now you’re just showing off! 🤣🤣 👍🏻👍🏻❤️
There are mufflers with three pipes, much easier. Also you could have bypassed one muffler completely with one valve without cutting holes if it was solely for sound reasons.
Goodafternoon Jeff, you are great mechanic. Have you also thought about a heat shield between the back bumper and the exhaust. Ramesh Sital from Holland. All the best to You and Mrs Jeff.
That's a big tease not allowing us to hear it open. But regardless love the work. Also 1 thing I've noticed amongst other vids, you take all safety precautions, especially welding with i believe is fire proof jacket. Hardly see anyone does that. Keep it up Jeff. Looking forward to Friday for Alfararri vid
I know it's a taste thing, but you could switch to a central exhaust tip.
Easier if a twin pass muffler exist (I don't know). Straight pipe to muffle with one button. ^^
Nice job as usual.
Within 2 years, 3.8 turbo?
I’m running the same valve in the troopy.
Interested to see how you go about wiring them up, are you going to try and wire them both up to a single control box and remote?
Keep it up Jeff
I''l take two please and if you could do some of your nice TIG welds also that would be great. Very nice work looks amazing! Sounds great so far.
And next nice Job and Work best of Jeff and the cool Porsche 👍❤️👍
Fantastic episode 🤩 What’s about the rear bumper? Are u going to repair it where u did the round cuts for the original exhaust?
You need to mount it properly too.
The sides of the mufflers will tear out in about a week.
I think you should leave the tailpipes that length
Terrific work as always! How much clearance is there between the end pipes and the fibreglass bumper? Any risk of burning the bumper?
To be honest, I think the new set up is a bit to bulky. Like the tips better when they are closer together. Nicely made though! And curious to the sound with the flaps open!!
Nice work!
One word jeff heat insulation for that rear bumper ok2 words.
Nice work! Do you not need rubber isolators on the muffler mounts? Entire exhaust on my car is hung from rubber isolators that are connected to the frame. Wondering if vibration and flex will break those welds loose. Hope not.
It is all mounted to the engine ;)
You need to use a nuch larger cup for stainless man you're just coooooking it.
OZwelding supplies has some of the best gear you can get.
We need a video of it working!!!!
I’m going to do this on the big block
Have you not got any hole cutters Jeff (I know you couldn’t do the hydraulic ones you have). Must have in that garage of yours.
Are you worried about exhaust heat effecting the bumper paint? Either way, it looks great. Your workmanship compared to the beginning is night and day. Great job
Interesting experiment but ultimately I see the stock muffler going back on .
Looking great, Jeff! A little support brace/bracket between the inside top edges of the two silencers might reduce any stresses on the X-pipe? Although the two brackets you added did look like they'll do a reasonable job of that too - but can never have too many brackets, right!?
Imho you should change connectors on this valve actuators for something that is waterproof.
I think I preferred the look before and thought I’d sounded ok....
It was pretty beaten up and I was worried it was a power restriction
I have put vbands on my bimmer for the same exact reason, but never even thought to go back tbh :D
Still not purging your tig welds.... you'll find that they will be far better if you do.
Would that mod pass engineering scrutiny?
Jeff; no expansion-joint anywhere?
I can assume the total width of the alu engine will increase more than the steel exhaust...
This will put strain on the weakest point somewhere in the system...
Wherever that will be.
I think some flexis would be a good shout.
Wasnt used on any stock or aftemarket muffler.
@@mawe42 Ok. Fair enough.
Apparently not needed then.
It is not an aluminum engine but magnesium - same problem though
@@XiraArien Semantics...
Why did you go from one muffler to two? Seems like one would be plenty.
Have you seen the varex mufflers made in Australia- I’m considering for my Dino
Sounds like a 411
I was always taught, if you need to grind a weld then you are NOT a welder but a grinder.....
Get a cheap plasma cutter, you will love it!
I have one. I don’t 😉
@@HomeBuiltByJeff lol, what don't you like about it?
Haha! I just watched hoonigan do a muffler on a Porsche!
nice Job packaging all that in there! Are you going to control it via the ECU (based on rev and load maybe?), or manually switch it?
Exhaust needs a SLIP JOINT
Please buy some hole saws
The stainless would kill them straight away.
Surely he has heard of a hole saw...
Interesting use of mufflers that are normally flat. I like it. I am interested to know how the pressure is going to work when switched over to the free flowing set up. Might have been better to have cut open the mufflers to see where the flow of the exhaust would go with your mods. I like the thinking of this. Interested to hear how it sounds.
I bought these mufflers as they showed a cut out view of the centres ;)
Jeff I have always wondered - do you wish you would have waited to paint the car until you finished everything you were doing to it?
Yep
Hole saw.
Great idea Jeff, where did you get the valves ?
eBay
I watched Hoonigan’s latest video, he has some lovely stainless headers and heat exchangers on his 911. Would make the underside of Harry look great.
Hmmm
You're a tease, want to hear it open and on the road! Argh LOL
Haha, so do I but I was completely exhausted (see what I did there). I only finished working on it few hours ago, and then I edited it. I haven't been able to head out in it yet.
@@HomeBuiltByJeff yes I saw what you did there, stick with cars a fires, stay away from comedy. LOL 😂
@@toddatstone_city_outlaw8714 You can't beat a Dad joke ;)
Luft is air in Swedish :-)
and in German ;)
And Danish :)
Paint it black, and you wil not see it