For goodness sake, this man needs to be accompanied by 3 apprentices at all times. The knowledge needs to be passed on. It’s pure gold.
@Mr.Higginbotham8 ай бұрын
Yessir!
@fb30xhk4 жыл бұрын
Iain Tyrrell - the car whisperer, if ever there was one
@nick21284 жыл бұрын
I wish he could talk to my hyundai, my tire pressure light keeps coming on even when I air them up
@marinedrive54844 жыл бұрын
A lovely car in a beautiful setting and now running as sweet as a nut, thanks to the maestro.
@alexlintern97794 жыл бұрын
Takes me back to tuning a neighbour's twin SU carbs on a straight six with an airflow meter....the owner was amazed that - once tuned correctly - the car was economical and reliable.
@hughoxford87354 жыл бұрын
I was just going to post that!!!
@jaymartin44184 жыл бұрын
Nick one of the wheel sensors is broken if you have the codes pulled it would tell u which tire
@Defender-Guy4 жыл бұрын
Anyone who gets asked to fly halfway around the globe to tune one car is a true master craftsman. Well done that man.
@shakespeare_hall47884 жыл бұрын
My Mothers Brother was a Mechanic of the Old School and he could tune a car by Ear like this and when he was done you could put a full glass of water on the top of the engine and not spill a drop !....I loved having him in the car when I drove him a few times because he could hear every little noise and he would say to me You need to replace the top rubber bushing on your left rear shock absorber or your front right wheel bearing is on it's way out so fix it soon before it becomes a problem ! He raced motor bikes at the speedway when he was young and I remember him driving my Father and me on dirt roads at 80 MPH steering with one hand and rolling a Ciggarett with the other going around corners sideways without slowing down ! he was the car wisperer to me , He was my Hero !
@fw14213 жыл бұрын
There are two Astons that turn my crank. The DBR1 and The DB4GT. This one is gorgeous!❤️❤️❤️❤️
@JohnHenryDale4 жыл бұрын
I had a chance to see this very car at Franschhoek Motor Museum last summer on my honeymoon. Absolutely stunning. My favorite car of the whole museum. Seeing this video pop up in my feed was instant clickbait.
@TheOracle654 жыл бұрын
Snap! I did the same a year earlier. A great experience and very memorable.
@MstreetDriver4 жыл бұрын
you know you're there when they invite you to tune car on the other side of the world. Thanks for sharing!
@ahouseofcars81984 жыл бұрын
It’s incredible to be sponsoring such a master. We’re incredibly excited for every new video!
@malcolmhollingdrake59684 жыл бұрын
Fully agree. A special engineer. Congratulations ... a success.
@pftr16364 жыл бұрын
Finally, an unpretentious and educational KZbin channel dedicated to classic cars. I've found my new favourite channel on KZbin! The scenery in this video is just fantastic. Makes me wish I was back in the old country with a 1969 Alfa Romeo Spider
@mohnnadmercedes82464 жыл бұрын
A House Of Cars he just adjusted the carburetors but with very very experienced hands ! He reminds me of consultant and resident students, both can do same job but the fine touch or small advice from consultant can make a huge difference
@jasoncordeiro20184 жыл бұрын
A House Of Cars this is a great channel!
@Trendyflute4 жыл бұрын
When Iain was speaking, the *_curator_*_ of the Franschhoek Motor Museum_ was listening to him with rapt attention, and said genuinely "bit of education today, fantastic!" Yeah, Iain is the exemplar of a Master.
@aussiebloke6094 жыл бұрын
I don't think I've ever clicked on a video so quickly before. It's a channel that never fails to deliver something interesting and worthwhile. Thanks, mate. :-)
@stephensalt67874 жыл бұрын
I’m a huge fan of the American V8 burble but it stirs the soul to hear a big British straight 6 on full song, easily as musical as Andrea Bocelli. Thank you.
@Alan_Mac4 жыл бұрын
When you know Connolly's colour palette and how their hides were matched and you don;t come across as a smart arse...
@bikesqump4 жыл бұрын
he was carsplaining! hahaha
@MoultrieGeek4 жыл бұрын
That blew me away as well, talk about knowledge.
@-DC-4 жыл бұрын
Connolly my man 👍
@danielmarshall45874 жыл бұрын
Not in the slightest..... just makes me feel like a dog watching someone putting shelves up.
@carlgeorgtsigakis4984 жыл бұрын
@@danielmarshall4587 HAHAHAHAHA - Thanks for putting words to my feelings. :)
@alex-tu3jc4 жыл бұрын
This is what car shows shows should be like!!!! A true automotive aficionado!!!!!
@JLo19604 жыл бұрын
You remind me of my father Iain. I remember buying an MG Midget, my first car at 19 years old. I couldn't get it to run properly. It drank petrol like a fish drinks water and at £1.02 a gallon I was always broke. My father tuned the twin SU's exactly the same way and it ran beautifully from then on. I remember looking at him like he was a genius. Good times, thanks for the memories Iain.
@alexmorgan34354 жыл бұрын
My old man did the same with my 6 cylinder Triumph. It ran beautifully after that.
@mopsnuf4 жыл бұрын
Amazing
@andrewstones29214 жыл бұрын
FrankHoney1 He WAS a genius
@stephenhenion83042 жыл бұрын
Yeah....twin SU s.... ditto for me... 63 AN7....
@risinbison11064 жыл бұрын
I'm just going to grab my piece of tubing and tune the priceless DB4....no school like old school.
@heaposan4 жыл бұрын
We need to upload Iain’s consciousness to the cloud so we never lose this expertise.
@bradfordbarrett36814 жыл бұрын
Wonderful job! The time and care and artistry, superb.
@briandavidson26844 жыл бұрын
Some great cars in that museum, also surrounded by very good wineries. Fantastic road over those mountains, Franshoek pass..
@mfletch3929 күн бұрын
That brings back memories of using a simple length of hosepipe to set up a costly car, The sound in the ears is so sensitive that it is amazing. thanks for a trip down memory lane and a good skill using a hose pipe
@johncanalese5884 жыл бұрын
I’ve been to that museum. The estate actually has a race track built on the property! Don’t know why they didn’t take it there and give it a run instead of only driving it on the access roads. Especially since they complained the cars don’t get much of a work out. It is a great place to visit though and is located in a very picturesque part of South Africa.
@euroshark14 жыл бұрын
Perhaps we should call Iain "The Carb Whisperer ?" Absolutely brilliant stuff.
@JelloTypeR4 жыл бұрын
George Barber That’s brilliant. Wish I’d thought of it first!
@fidelcastro95794 жыл бұрын
A friend of Harry’s is a friend of mine. Great efforts. 👍
@neilfairless45894 жыл бұрын
Not a laptop in sight. They don't teach this skill anymore. Wonderful.
@ianstoyan4 жыл бұрын
I think the men working in Iain's workshop are learning from one of the best.
@nick21284 жыл бұрын
... this would be the basics of what you need to learn to work on modern cars of today.
@ianstoyan4 жыл бұрын
@@nick2128 in my experience, today's auto mechanics are simply taught how to diagnose a problem and then told which parts to remove, and replace with new. Almost no effort is made to fix a problem. Modern auto mechanic teaching would not work for mending a 1950s carburettorred motorcar.
@neilfairless45894 жыл бұрын
@@ianstoyan Not wrong, who here can remember setting the gap on your points and pulling a choke? Too easy nowadays, thats what makes Iain's skill stand out. Your average raodside mechanic would go erm.......
@tonychavez20834 жыл бұрын
Adjusting those old Weber’s properly is a true skill... such a beautiful Aston
@cecilwilson54424 жыл бұрын
Someone who is totally knowledgeable on his subject. Mater even down to the seat's and the type of leather and the year of the leather wow anyone lucky enough to learn off this man will never be out of a job hear see smell then fix wowed every day's a school day with you 😁👍
@johndavey724 жыл бұрын
Iain , you ARE the magician! Shame you couldn't drive it , it needed someone who could drive it properly! I did notice on the 1st test drive it showed 82669 and on the 2nd 82700. Someone's had a lot of fun in that car...over 82k's worth. Gorgeous! Thankyou Iain.
@charlesvanderhoog70566 күн бұрын
Flying 9.000 kilometers to the most beautiful country south of the equator just to turn some screws on an old car that nobody else knows how to do? That is real mastery appreciated by the knowledgebles. I love it. There is a thoroughly enjoyable video where Tyrrell tunes an old authentic Riva launch on the Como Lake in Italy. Go and see that one, too.
@The10folks2 жыл бұрын
Incredible video. I would have thought the master Tyrrell would have brought his own trusty hose from England. It's 2022, and this video is still being watched. thanks
@a.brounz2 жыл бұрын
I have watched all the episodes twice now and I've come to realise that Mr. Tyrrell is quite cheeky
@scroozz2 жыл бұрын
Never get enough of Ian a screwdriver , imperial , and a length of hose , magic
@tug1345 Жыл бұрын
One of the truly best sounding engines, wonderful noise, Tadek Marek proved it was no fluke when he struck gold again with the later V8, another wonderful sounding engine, watch Iains latest video of the DBS V8 for that
@IvoPoblete4 жыл бұрын
4:25 The curator is not happy with Tyrrell's knowledge on that leather 😂😂😂
@daveslocombe3 жыл бұрын
that was a stellar vuomol drop of knowledge :)
@belgreenhills2 жыл бұрын
I’ve watched this episode before, but it’s truly a pleasure to watch you work your magic. Thanks for sharing.
@shankarbalan38133 жыл бұрын
Iain is pure class. What artistry!
@jep19124 жыл бұрын
There's no substitute for skill, craftsmanship, encyclopedic knowledge and a love of classic cars.
@GB-vn1tf4 жыл бұрын
Beautiful car and what a beautiful place the guys at! That collection of cars looks incredible, hopefully it stays safe in these times as South Africa isn't what it was 20 or so years ago, especially for the farmers out there.
@djpalindromeАй бұрын
How long before it’s broken into and vandalized. Crime and corruption are rampant in South Africa. They are so incompetent they can’t even keep the lights on
@digijams4 жыл бұрын
Tuning by ear, now that is an art form that is sadly being lost today. So calming and satisfying to watch.
@juansequeirabaquero17804 жыл бұрын
This man is an encyclopedia.
@scottwilson12583 ай бұрын
Wow, what a treat just to see it ,Hear it and SMELL It! Excellent Treat!
@petenash79944 жыл бұрын
Why do i feel so bloody good after watching this episode? Great lads and great car.
@marcpercy47034 жыл бұрын
It just gets better and better!
@dblue77114 жыл бұрын
Fantastic stuff, and how gorgeous is the Western Cape, a DB4GT against that back drop , wow
@shoestringfarm2 жыл бұрын
I'm an English man living in Cape Town, I'm heading there with my boy ASAP. I love a good carb tune.
@jamesmateer202011 ай бұрын
Fabulous!! I could watch this man tune carbs all day long
@oldclassiccarUK4 жыл бұрын
Very therapeutic watching someone who actually knows what they're doing, & talking about, with such a stunning machine. The on-boards (the Aston, and the V12 Ferraris in previous vids) are particularly welcomed :)
@robertmccarty77364 жыл бұрын
Iain is pure class when he defers to the curator..."Now you know the statistics better than I do"...ummmm, no. "If I'm not mistaken this is VM3234... beige in Connely's color pallette...natural grained vegetable tanned nitrous cellulose treated leather.." This guy is a joy to watch, thanks for getting him into it Harry.
@beowulf59823 жыл бұрын
This is the only channel i have watched all videos multiple times so as not to have missed anything. Thank you.
@heinrichwilliams2056 Жыл бұрын
The master himself! I hope that his knowledge is not lost to future generations. And Mr Rupert has some wonderful cars in that collection
@wallymcguire20334 жыл бұрын
6:00 Every man should get to experience a moment like this before they die. It’s a shame it’s reserved only for the very wealthy or those with some exceptional expertise that grant them access to such fine automobiles and environments. Superb vehicle in a magnificent setting.
@RB_CO3 жыл бұрын
Imagine being such an expert at your craft that someone is willing to fly you to the other side of the world to help them out. Fantastic.
@AlexanderZarich8 ай бұрын
The man, the legend can turn wrench. Well played.
@markmiwurdz2024 жыл бұрын
With the knowledge and experience that Iain has, I really hope that he is training his technicians back at his own workshop. Saying that, he's probably forgotten more than any trainee/apprentice will ever learn! A joy to watch and listen to a Master motor engineer. Keep up your good work sir.
@amugen2 жыл бұрын
I turned the subtitles on for this, and I like the way that when the engine was roaring , it just said 'music'. The sound of this engine is indeed music to mine ears.
@capnthepeafarmer4 жыл бұрын
I love it, "what, are we getting posh now?" And you still use the bit of pipe. It's not the tool, it's the experience.
@iainmcglynn8332 жыл бұрын
Hands of a surgeon If ever I need a heart transplant I know who I want doing it Yes a heart surgeon but anything car related Iain can do 😎 It’s the attention to detail when he’s being ultra nerdy then says “ if I can be nerdy for a moment “ makes me smile 😃
@geofo604 жыл бұрын
My uncle who is sadly no longer alive would have spent hours talking with Iain. He was real “old school” & would put a long handled screw driver to his ear & put the blade on different parts of the block, cylinder head & say “ it’s the ******* that’s the problem “ & be spot on every time. He worked his way up from a mechanic to finally becoming the Director of Cotswold Engineering, a company that was renowned for its mechanical prowess in machining & building top notch engines. What a pleasure to watch a Master at work Mr. Tyrrell, really pleased I subscribed having found you via Harry Metcalfe 👏🏻👏🏻👏🏻👏🏻.
@johnjones48254 жыл бұрын
Iain, you are more, much more, fortunate than I. I have lived 47 of my 61 years just 50km from that museum, and have, to my shame, never visited it! And you get to go there twice within the span of less than two years...
@darrenmclellan67124 жыл бұрын
When you first started the car, I thought to myself "seems rough". There was a noticeable harmonic 'wobble'. Not something you expect from an inline 6. Looked smooth as silk after your laying on of hands. Well done sir.
@Omegaman19694 жыл бұрын
There is still something not quite right with it though , spitting back out of one of the carbs indicates lean mixture . Really needs a clean set of plugs, a long open throttle run and a plug inspection. Also the ignition timing should have been verified before setting idle speed .
@SilverSurfer51502 жыл бұрын
Congratulations Aston DB4 GT, you have been Tyrrelled!! Iain, the best in the business.
@nmcg25874 жыл бұрын
Lovely car Mr. Bond The museum and grounds are simply stunning. My eyes ached just looking at the scenery. What will become of these machines come time for these guys pass the torch and retire?
@EvilUnderTone4 жыл бұрын
People always comment on how well my vehicles run. I've always tuned my vehicles by ear. What folk don't realise is everything else needs to be perfect before you can tune a car correctly. If your engine is tired or has issues you'll never get it running silky smooth. Always a pleasure watching you setup these old webbers. At the moment my car is fitted with SU's. I doubt there are a handful of V8 Rovers in the country actually setup correctly.
@yourbutlerza4 жыл бұрын
I am from Cape Town and have been fortunate to visit the Franschhoek Motor Museum. Awesome experience as is watching this channel. Thank you for showing the rest of the motoring a little piece of beautiful South Africa and some excellent motor cars too!!!
@simonplatt20404 жыл бұрын
Who on earth were the 18 people who said they didn't like this !!.. fantastic video. Its great to see a true artisan at work
@gavinausten18252 жыл бұрын
As a South African, this post has elevated you sky high.....thank you.... South Africa is a beautiful country with beautiful people......Im a white guy with a Zulu wife.......Gavin Austen and Sibongile Austen.....the world
@dlfrestoration4 жыл бұрын
I have made a vacuum balancer that gose into each trumpet to get the cylinders balanced exactly. Got tied of going round and round by ear.
@dlfrestoration4 жыл бұрын
On the second drive it sounded like it had a ignition miss still as the rpm climbed.
@stevieg74034 жыл бұрын
I love the way he just let them run with their excuses, class!!
@henrikforsberg6834 жыл бұрын
Stevie G : yes of course it ran great before it was put in storage, all those screws must have magically rotated several turns. 🤪
@bentleynut16484 жыл бұрын
Henrik Forsberg .....you wrote exactly what I was thinking. Leaving a car unused does not change the fact that it was not properly tuned in the first place
@andreguse8484 Жыл бұрын
Glad to see you visit South Africa.
@eddyagg4 жыл бұрын
It even sounded noticeably crisper after the tune! Beautiful👌👌
@ToyKingWonder4 жыл бұрын
Ah you tube, on one end you have people that know what they are talking about, and a true joy to watch them in action, on the other end you have Doug DeMuro.
@洪榮哲-y4x3 жыл бұрын
What a expert,no need extra tool to adjust the webber carbs!
@damientaylor14 жыл бұрын
For a simple lay-man, this is like watching a wizard and a piano tuner rolled into one....all with the use of a simple hose and a screwdriver. Fantastic.
@MoultrieGeek4 жыл бұрын
Every time Mr. Tyrrell posts a new video I feel like a student at the hands of a beloved master. I thought I was a proper petrol-head until I saw my first workshop video and realized how ignorant I really was. Hats off to you Mr. Tyrrell.
@Kaare19634 жыл бұрын
Magical, simply magical...
@peter-e2q4 жыл бұрын
I could tell the quality of your work with one 2 second clip of this video at 15:12. When you handed the screwdriver over, it was so precise. Firmly held in your hand until positively accepted in the other guy's hand. No chance of dropping it and scratching the car or damaging the tool. Treating tools and equipment with respect.
@TheAslakVind4 жыл бұрын
I love the way the curator really looks out for, holding the screw driver each time. But also that the owner, known to be extreme protective of his cars. Calls Mr Tyrrell in as the only one allowed to work on his cars. What a respect we see!
@Jabber-ig3iw4 жыл бұрын
That car, in that colour, with that engine. Just perfect 👌
@franburke4 жыл бұрын
I’d pay money to watch Iain work. Superb!
@marcuscopley1314 жыл бұрын
What stunning countryside. I had no idea South Africa was as green as that beautiful Aston Martin. It’s a pleasure to watch you,a master at the black art of setting up multiple Webber’s by ear.
@jonlow55542 жыл бұрын
Fransch Hoek = Dutch for French Corner. Settled by Protestant French Huguenot refugees after King Louis XIV cancelled the Edict of Nantes in 1685, which had awarded limited tolerance to Protestants and who resumed Protestant persecution by confiscation of their wine estates. They fled to the Dutch refreshment settlement at the Cape of Good Hope, which has a Mediterranean climate and terroir much like the south of France, and established the wine industry of South Africa there back in the 1690s.
@mattmcnulty7191 Жыл бұрын
It's stunning there mate everywhere, and especially in Wine country.
@ianhjan4 жыл бұрын
You got her running "as sweet as a nut" as my old Dad would say. You could tell as soon as you revved her that the lumpiness had gone. I am loving your channel Iain.
@alchapman10524 жыл бұрын
Amazing stuff , hope Tyrell workshop in the U.K. has an apprenticeship scheme so the next generation can learn this valuable information and help keep these classic cars going.
@Badger-Z4 жыл бұрын
Only found this channel through Harry Garage. After a few videos its plain to see you sir, are a national treasure.
@chrisflemington8194 жыл бұрын
Hello Ian, That was a wonderful video. The last time I heard anyone who tuned by ear was a man called Dennis Ball who was my fathers chief engineer at a company called Western Machinery which was based in Ivybridge in the West Country where he built tested and maintained new machines which had been imported from Scandinavia in the late fifties early sixties. He used one of his workshops to rebuild a written off Porsche 356B. His son took the car out for its inaugural run - he wrote it off! I’ve have never seen such a disappointed father. Dennis served his apprenticeship at Rolls-Royce so there were a number of similarities between the two of you! He often used to say when he was helping me prepare my cars for local rallies to listen as a lot can be learnt from the noise an engine makes together with its drive train etc I of course was too young to learn but indeed they were wise words and now I hear you and look back it brings back some happy memories. Thanks for that and of course the video of a fabulous car with a truly wonderful engineer. Chris Flemington
@johnfrench96084 жыл бұрын
Iain you obviously have a lifetime of knowledge. You need to write a book or something.
@cpad0074 жыл бұрын
Or have KZbin channel. ;o)
@dee106ful4 жыл бұрын
You are an absolute legend....so lovely to see a skilful specialist enjoying his work.
@petel92424 жыл бұрын
Frankly Iain, this should be primetime TV! What a great video, a real privilege to watch. That noise is just something else. I'm 47 and work in IT. Can I chuck it all in and come and work as your apprentice please? :-)
@vic7k4 жыл бұрын
There’s so many self proclaimed KZbinrs that own and document modern super/sports cars but I’ve always been interested and fascinated by cars of the post war and pre 80’s era the golden age of sports cars and the real supercars as they really are. You doing this channel is amazing and your experience, knowledge and wisdom is immense and second to none, and these works of engineering marvels that come through your doors is why me and so many others love these cars. Carry on the great work you and your team do to preserve these great machines.
@ImmortalInflames4 жыл бұрын
This car is love... and I'm truly heart broken that I'll never have the chance to drive one, let alone own such an incredible piece of classic performance & rolling art... magnificent, what a rare splendour she is!
@adamct444 жыл бұрын
That video just made me smile from ear to ear, brilliant!
@brianlloyd47964 жыл бұрын
Absolute joy to watch👍👍👍
@MGBranco4 жыл бұрын
I just can't find words to express my feelings when I watch Tyrrell's videos...well mainly because I'm Portuguese but the level and qualify of the data that his videos offer is so high that I'm completely flabbergasted...keep it up Tyrrell!
@calebjornsen614 жыл бұрын
An absolute privilege to watch. A new 20 mins video every day would've been perfect...!
@93455Driver4 жыл бұрын
These videos are awesome, such a treat. So sad that now it is a case of plugging in a laptop and tuning by 0s and 1s, but even sadder is that eventually there will be no engines to tune in new cars.
@trainmanbob4 жыл бұрын
Real mechanics know how to work on a car with basic kit. I once knew a guy who could use a screwdriver and by putting it on an engine could tell you exactly what was going on inside. However when you can do it on the DB4 t up you know you are looking at a man with serious knowldge and capability,. Terrific video Iain, and as to the sound of the DB4 tuned...Pure music. Cheers, Bob
@michaelfletcher22874 жыл бұрын
These videos are like therapy for the iPhone world. Please keep them coming
@alejandrorobledo13813 жыл бұрын
All they need is the master touch , good job master you are the best mechanic in the U.K. !!
@AdamS-qo5gm4 жыл бұрын
Another gem. Happiness in video form. Thanks, Iain, it's a pleasure to watch a master do their thing.
@ptvfr8004 жыл бұрын
If you have a hard to reach screw that may be dropped, try tying a lanyard to it, either strong cotton or fine fishing line with a slip knot, then when you are sure it has started, remove the lanyard. Wonderfully enjoyable video Iain, I live in Western Australia now but I am originally from Cheshire and remember hearing good things about you back in the 1980’s.
@andrewmoorhouse6874 жыл бұрын
Fabulous video again. Beautiful cars and someone with incredible skill and knowledge. Dealing with high end cars, yet totally unpretentious. I can see why Harry Metcalfe chose Tyrell’s to rebuild the engine on his Espada. This is becoming one of my favourite car channels by far. Keep up the good work Iain.
@brianmort67773 жыл бұрын
These videos are sublime Mr Tyrrell, like watching the worlds finest Michelin chef cook a soufflé your expertise and passion for classic vehicles are a must watch for any petrol head
@inkno7014 жыл бұрын
I hope you make a video or two showing how to tune some common classic car carburetors. Thanks for the great videos, can't wait to see whats to come.
@larumpole9 ай бұрын
Thank you for this video - especially the 'music' of that gorgeous engine, so clearly different after you practised that darkest of dark arts - tuning Webbers! I watched this after watching your latest video on the DB6 MkII, and thank you also for changing my opinion of the DB6 generally. I recall the days when a roopy DB6 could be bought for under Stg. 1,000! These days, a DB6 is probably the most affordable of this generation of Astons, and a 'bargain' in years to come.
@GT380man9 ай бұрын
The carburettor tuning & balance is very similar to the procedure I use to set up the triple Mikuni carbs on my Suzuki GT750 two stroke triple motor. What looks both more complicated yet much easier on the DB4 GT carbs than on my Mikunis is that there are several adjustment screws on each carburettor. Each “circuit” is capable of being adjusted, the ease of doing so varying tremendously. Typically, you can readily adjust idle mixture, by varying the the amount of air (screw on the air filter end of the carb) or fuel (screw on the engine end of the carb) into that circuit. The transition into the jet needle, needle jet and main jet each require different adjustments. On my Mikunis, these cannot be done while the motor is running, though the throttle controlled “butterfly” valves that affect balance, certainly can be. The other adjustments are made by altering clip positions of the needle, or it’s taper and diameter or jet size. How Ian does all this just by listening to the hiss down a piece of hose in lieu of properly calibrated vacuum gauges is beyond me. The additional instruments he’s using are his ears and his whole body, sensitive to the sweetness of the note of the engine and it’s smoothness.