Love watching Isaac work his carby magic, dude's a genius

Dudes under fifty tuning carbs. Now this is content that’s worth watching. No offence to the “Page Up” crew, but this is more fun.

Webber masterclass in this, gonna have to watch it a few times and probably at half speed to take it all in.

Good to see someone young, that actually knows what I learned 40yrs ago. Tip my hat to you Issac. ( old time sign of respect lost on today's world).

I have been fighting the pop on low throttle transition for 2 years and just found out the real reason. You missed to check one extremelly important point when you did the setup. The position of the throttle blade at idle position in relation to the progression circuit. I did find it in only one Weber book even though it so important. The throttle blade must barely block the first progression hole at idle. As soon as the blade moves it needs to open up the first progression hole. The book says to notch the throttle blades to achieve this. It will enable you to go smaller with idle jet and pump jet, get much better transition and fuel economy. This is also the reason why the weber setup procedure tells you to set the throttle blade stop at 1/2 or 1/4 turn. As soon as you have to deviate from that the throttle blade position is wrong in relation to the progression holes. If you are just slightelly off you can also enlarge the first progression hole by 0.1mm but that is not reversible so better notch the blades as they are available. There are even different angles of blades available for exactly that reason.

What a wizard. He's got tons of valuable knowledge that is slowly getting lost to time with most car guys. It's been nice to see a sort of resurgence of carby stuff recently in the industry. This was awesome getting to just listen and learn, thanks to both of you.

Thats an absolute art to do. I sometimes tune motorcycle carbs but this is so much more in depth. Isaac needs his own channel if he doesn't already. Really good on camera, loads of knowledge and everyone would like to see it I'm sure.

This is a great episode. I saw this young man on MCM dealing with a VW. He is extremely knowledgeable but not arrogant. His explanation of what is going on with the carbs in relation to driveability, idle, cam etc is direct and factual. As an old school carb guy, I am across what he is talking about. 10/10.

I love the mechanical "complex, but simple" abilities of carburetors. But this explains why EFI is necessary.

Getting a decent run-down on webbers from Isaac, for someone like me whose carb knowledge is centered around bikes, is invaluable. Please pass on our thanks to Isaac, really really appreciate it.

Isaac is a boss on carbs man, i remember him from MCM and the VW bug vid....fantastic!

Tunning Carbs it's kind of a craft art mixed with a lot of knowledge and practice fighting to get it right. Cheers to Isaac for that!

Thank you so much for this video! Isaac is an absolute national treasure. The whole Weber fed sigma tuning took me down memory lane and to a very happy place. Wonderful to see such old tech still being understood and used. 👍

The Sigma now has all the Dorts!!!! It sounded lovely at the end ❤💯🔥👊🏻

You don't see priests of the dark arts very often. Isaac is an awesome guy!

Sounds awesome. I love Weber carbies, the old-school methods of them and the sound.

WE NEEDED HIM 20 YEARS AGO!

Isaac , awesome job, seriously,webers need such knowledge, really really good job.

Issac is a national treasure 🤘

reminds me of my old man tuning/working on weber 48ida on my rx3 back in the day... he wrote workshop manuals for gmh but never lost his old school tuning talents!

N64? Oh Isaac... We grew up blowing out Atari 2600 cartridges.

This was a friggin class episode, loved it 💪💪💪💪

I use the same innovate LM-2 for this, fantastic hand held wideband. Isaac knows what’s up!

All good having Isaac in the garage.

Nothing like a good thrash in the name of science. That noise is pure music, thanks guys.

My mind has been like... ok magic it is then.

Loved this kind of very technical videos. Was awesome to see him work.

Isaac is now known as the Carbonator!

Excellent, knowledgeable, informative. Loved it. Top man to have access to with all that understanding of carbs.

Great stuff! There isn't enough in-depth info on tuning carbies (that aren't on V8s) on youtube, this is a huge help to me personally, Isaac is a legend. If you're keen to keep the webers and want total control over the timing, have a look at the Megajolt EDIS system. I put it in my twin carb'd Subaru and it works very well. It just controls spark with some other aux inputs/outputs for sensors, gives you control over the entire range of load vs RPM conditions.

This has to be the best carb tuning video I’ve ever seen wow man

It's great the way this guy likes to explain everything in detail. I would recommend anyone thinking of going twin side draughts to pick up some Dellorto DHLA emissions carbs from an Alfa - they're cheap and some carbie wiz on the internet figured out a jetting where they pretty much tune themselves for idle>main circuit progression. I've chucked them on a few different Corolla motors from hot to stock and I've always been amazed at how little work I had to put in to get great driveability.

Idle and progression holes are both on the idle jet boys👍 good job.

that was so satisfying to watch. Go Carbies!

Massive! Not just a roller, but a goer! FR

Another enjoyable informative video 👍🏼👍🏼👍🏼👍🏼

The Retro Encabulator has now reached a high level of development. Good job Isaac 👍

Carby laptop ftw. Sounds pretty meaty and smooth revving now. Almost time for good bye huh... Whoever gets it will be happy.

man this episode is sooo freaking interesting! also the song at the half way mark, bigggg HPI dvd vibes!

Love the sound of Webber's

This carburetor guy is a legend

lady stalls her car at the traffic lights in front of the cops. Policeman asks what's wrong, lady says it stalled. policeman says pop the bonnet, I'll have a look. He rummages around for a while then says "try that" and it starts right up. lady asks "what was that" and the cop says "shit in the carburettor". lady says "how often do I have to do that?!?"

Isaac is a legend!

Jets....Freaking Chokes are real money, even just for four! Late 90's chokes were $50+ each.

Sounds Awsome!!

Issac is a legend! Also love the colour coded wheels! Perfect period mod!

I had to do this on my father triple Weber hemi engine. Was a shite of a job 😅 but awesome when you get results!

I found a video of yours just the other day building the Sigma. I have spent the whole afternoon on my, to Smart TV to watch every episode made so far. Great build although I rather like builds to original car this was a great afternoon and evening watching your work. I'm an old Chrysler/Mitsubishi nut. Too old to now be able to do rebuilds like you do but not too old to collect scale models and paraphernalia. My scale model collection is nearing 2000 models just of Mitsubishi cars. Not easy when they are not on top of many models makers list. Australian model companies are not even interested. A company called Hi-Story have recently released 1:43 scale models of the Sigma, Colts, L300/Delica, Legnam, Galant, Diamante based on our Magna and Lancer. Prices however are a bit too much for my collection at $100.00 a model. My dream before my accident at work was to be able to have a big shed to house my models and a few real Mitsubishi cars and the collection of brochures of every model released in OZ so far. Unless I win the dam lotto it has come to an end and is why I enjoy what you and many like you are doing so save and restore so many great Mitsubishi cars. Thank You.

Im glad there is still nerdy relatively young guy playing carbie in the heaps of world efi today... Carbie whisperer 🥰💪

Very informative

With all this painstaking work, nothing and I mean not even efi itb's sound as good as a set if Webber's on a 4cl, just love it

Best noise e v e r ! PS: was that the Crown 4WD wagon that Daniel featured on Wasabi Cars?

A dying art, the late 80s early 90s was about the last of the carbies. Any mechanic who was 30 back then has retired or is about to, and there is very few people with the skills or interest in playing with carbies anymore. Love your work Issaac, and to everyone else, look after this young fella and learn everything you can from him.

Watching you tune was intriguing and I’m here to say that cruise and part throttle looked to be spot on in the end but dude there is no way in my 50+ years that naturally aspirated engines make power at 10-11 AFR! I will personally tell you that engine will make peek power between 12.8-13.2 AFR at WOT. Now if it was boosted we run safe at 11.8-12.2 at WOT or a tad richer to cool the cylinders. Also have all your timing in by 3500RPM 32-36 deg! Great to see you playing old school and showing what it used to be like! Can’t wait to see you in the states 💯👍🏼👌🏼🇦🇺🇺🇸

HI ALL WELL AFTER JEROME said main jet 600 times lol love it lol

Ya more sigma content. Great video as all ways mate

Hi! Woke up at 3 this morning thinking about something you said you want to do to the Sigma in your video. You talked about installing SE front and rear seats and wanted the rear seat to recline. Also you were talking about putting better speakers in for sound. Your probably aware but it woke me up, when you install the reclining SE back seat you loose about 4” to the parcel shelf. I remember trying to find speakers for my SE it was hell back in the late 70’s.

He’s a wizard harry!! I’m in the same boat as you Benny. Lol

Fark !!!how good do twins sound!!!!

I spent so many hours on my Datsun 1600s back in the 90's tuning Webers. Was a great day when I finally got Ric Shaw to fit EFI. So much better than stuffin around with Webers🤣

Outstanding. Steam Punk Haltech

The car by whisperer……love it. EFI has made us lose some of the finer skills of tuning. He is the Maverick of carby Top Gun

Did he update to NSP software?

Doing a Re-graph of the dizzy can solve a lot of timing parameter issues

Pure wizardry

I’d love to know what he’s done with the moogbuggy from MCM after they broke it

What a legend

I was waiting for the length of poly pipe to come out Iain Tyrrell style!😀

Numbers come through on Saturday lotto Benny its mine will overpay for perfection like that on the Webbers!!! (And the future headlining restoration 🤣👍🍻)

Once you have learned what sound to listen during the carb tuning you just cannot stop doing it. I constantly evaluate all the small dirt bikes the kids ride in our streets. I even give them tips sometimes.

Isaac is a G! Need to do a dyno video with him and tuning fork @HALTECH. Even though fork is an effective boss I'm sure he would enjoy the idea of this kinda tuning.

A trip back to the past when I had a Datto with a very warm L18 and 45 DCOEs. Frustrating to get right, but when they are, there's nothing better. L18, DCOEs at WOT and 7500 RPM - Ear Porn.

I was pretty good with Holleys in my day

All the borts❤!

Fuel injection vs carbs is like CDs vs vinyl. The imperfections and compromises are what makes both carbs and vinyl more endearing somehow. Technically, it's not "better", but how can it be if you don't love it as much?

ha that old Crown Safari wagon 😄😎

At 5:30 says it all. If you go larger cam with more overlap and duration between inlet and exhaust, you defiantly warrant more compression. Thats one of the bonuses of running a bigger cam shafts, you can run way way more compression, with more advance timing. Im at 11.5:1 compression on a 8000rpm cam on twin DCOE's. This tuner needs his own youtube channel. Not enough webber tuning tutorial videos out there that are not in Italian....LOLS : )

freaking wizard!

Fkn classic guys..... com onnnn! You just need to admit it's a rotary next loll if you care about all that🤣

Carbyoda

Weber's. You either become an expert or pay one to fix it. It's great fun. Still going through it.

G'day, loved watching this Sigma rebuild. As a former GE owner, it was amazing to hear what an Astron engine could sound like. Just wondering what the fate of the beast was? Did you end up selling it or do you still have it? Thanks!

I am amazed. I can't even tune my downdraft 32/36 lol

At 10:43 is that a Stihl screwdriver? Haha. Old council days..

Rewind to 23:45 for that "initial doot".

Isaac the Harry Potter of carbs 🪄

Sounds like I need isaac to tune my 45 DCOE 3sge.

If Al is Turbo Yoda then Isaac must be Carby Yoda

did you use a fuel pressure regulator?

What's the carby version of Tuning Fork?

How many times does Benny say “Yeah”

Carby jet drills are perfect for releasing pressure out of crushed finger nails ….. ask me how I know 🤣

'yeah right'

Can we get an update from Isaac on the moon buggy? From an Air-cooled VW fan.

Oh man…I just want to know more about “unfair”🤤

Classic Sigma roof lining lol

Oh that soundddddddd

A man who has practiced the Black Magic of Weber tuning. Tunes Webers and tunes guitars. Can he do pianos?

Hoping to see a efi conversion...

A young carby expert, most would be 50 years+