Brake Booster Rebuild - Bonaldi (Alfa Romeo 105)

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Jethro Bronner

Jethro Bronner

Күн бұрын

Пікірлер
@SkylarkCamperAdventures
@SkylarkCamperAdventures 2 жыл бұрын
No funky background music, no constant talking, just pure engineering, you dont need much else do you, just the right amount of narration to explain things then let the viewer enjoy, brilliant episode again 👍
@JethroBronner
@JethroBronner 2 жыл бұрын
Thank you!
@GarthGoldberg
@GarthGoldberg 2 жыл бұрын
100% right.
@macwiz1333
@macwiz1333 2 жыл бұрын
Nothing to add. Perfect classics mech entertainment. Thank you.
@levelcrossing150
@levelcrossing150 3 ай бұрын
Exactly what I thought. An immaculate job and presentation.
@fyshfysh
@fyshfysh 2 жыл бұрын
ridiculous that this channel is only 42k subs considering how incredibly well produced it is. amazing work
@JethroBronner
@JethroBronner 2 жыл бұрын
That’s very kind of you to say, hopefully with more regular and consistent uploads I’ll get there.
@alfatechniks887
@alfatechniks887 Жыл бұрын
One year on from this episode release it’s now my turn to overhaul my rear booster. What an episode and so thankful that you created this one. Top job Jethro
@KarlAdamsAudio
@KarlAdamsAudio 2 жыл бұрын
9:25 - I had to re-watch the explanation of how a vacuum booster works - not because it wasn't clear, but because I was distracted by wondering "Is that a Montblanc 145 in burgundy?"...
@JethroBronner
@JethroBronner 2 жыл бұрын
Yes it is!
@tamasadam1932
@tamasadam1932 2 жыл бұрын
This is the most enjoyable channel i've ever seen. The calmness, precision and good tips relax me like no other. Amazing work, keep cool ! best regards from Hungary :)
@JethroBronner
@JethroBronner 2 жыл бұрын
Wow, thank you! That's very kind!
@jasonshull3106
@jasonshull3106 2 жыл бұрын
Thanks again for your great videos
@JethroBronner
@JethroBronner 2 жыл бұрын
Glad you like them! Thanks for watching!
@henkbielderman4243
@henkbielderman4243 2 жыл бұрын
Whooo Hooo! Made my day Jethro!
@JethroBronner
@JethroBronner 2 жыл бұрын
Thanks! Glad you're back to watch this one
@henkbielderman4243
@henkbielderman4243 2 жыл бұрын
@@JethroBronner Whilst watching this video, part of my brain was occupied thinking how fear can stem from ignorance. You have explained this repair wonderfully and it is always such a pleasure to view your work. I am sure that many of your viewers will feel the same as I. Brake boosters demystified in one easy lesson! Thanks Jethro, you are a Star mate!
@scaleartsg
@scaleartsg 2 жыл бұрын
i love the jazz background! Really suits the car
@JethroBronner
@JethroBronner 2 жыл бұрын
I'm definitely in a modern jazz phase with the channel
@Darthvolvo
@Darthvolvo 2 жыл бұрын
Jethro that was a master class on rebuilding and restoring a brake booster. I doubt I could keep all the parts in order, but I'm glad that you can! Always a pleasure to stop by and see what you are up to!
@JethroBronner
@JethroBronner 2 жыл бұрын
Thanks! Yeah the first time I took one of these apart I found it pretty tough to keep all the parts orderly.
@manfredschmalbach9023
@manfredschmalbach9023 2 жыл бұрын
That's why we should have explosion drawings for these multi-part devices, best with old stock numbers pointing at each part, too, to be able gooogling numbers instead of pics ......
@stone-hand
@stone-hand Жыл бұрын
Photo cameras in phones can be of help. Of course, using them consistently... Is another form of discipline to be acquired.
@213davidhunter
@213davidhunter 2 жыл бұрын
Great video, would love to see your cleaning and plating process.
@geoff3656
@geoff3656 2 жыл бұрын
Yes let’s see it please 👨‍🏫
@JethroBronner
@JethroBronner 2 жыл бұрын
This was my first ever attempt at electroplating, so I will need to get it a lot smoother before I film it haha
@jackp1351
@jackp1351 2 жыл бұрын
Easy to see why no one wants to touch these. Another area of expertise you've tackled, Jethro. Kudos!
@vinnychoff
@vinnychoff 29 күн бұрын
thanks for your video. I have a alfa spider with twin boosters and wondered what they did. thank you for explaining and showing how it works. The video was great in understanding how it works. thanks for taking the time to explain
@louisgriffin3386
@louisgriffin3386 2 жыл бұрын
All I can say is, I'm impressed by your videos. My 69 Berlina has two boosters (South Africa)
@davidorama6690
@davidorama6690 2 жыл бұрын
You’re either born engineer or a born producer, I’m not sure which, but your videos are always educational, soothing and make me want to restore cars to the end of my days. 👍
@KeithHeinrich
@KeithHeinrich 2 жыл бұрын
Someone in Italy did just that 50-ish years ago when the unit was first assembled. Good viewing, thanks.
@filipthealucard
@filipthealucard 2 жыл бұрын
i swear you are the only guy on this planet that can make me watch brake booster repair
@AlfaAddicts
@AlfaAddicts Жыл бұрын
Excellent video, like the rest of them. Great to see the passion you also share for these amazing pieces of mobile art.🤟🏻😎
@JethroBronner
@JethroBronner Жыл бұрын
Thank you very much!
@grahamtricker4103
@grahamtricker4103 2 жыл бұрын
You have a really lovely Duetto Spider. I owned a 1600 GT Junior back in 1986 so I know how special these cars are... 👍
@JethroBronner
@JethroBronner 2 жыл бұрын
Thank you! But this isn't my car, it belongs to a friend of mine.
@lynnhooley7608
@lynnhooley7608 2 жыл бұрын
Just a quick note to say hi, and feed the algorithm. Excellent video as always!
@JethroBronner
@JethroBronner 2 жыл бұрын
Awesome, thank you!
@Matteo_Licata
@Matteo_Licata 2 жыл бұрын
Lovely video, as always!
@JethroBronner
@JethroBronner 2 жыл бұрын
Thanks Matteo!
@Rexcardo
@Rexcardo 2 жыл бұрын
Hello, I have a Hillman Hunter 77 with this brake system and with this video I just understood how the remote brake works. Thank you very much and greetings from Perú
@craftyclassics
@craftyclassics Жыл бұрын
Thanks so much for making this video. I’ve just watched it for a second time and used it as a guide while rebuilding both the boosters on my ‘73 Super. One of the little air valves was really stuck but I read online that if you blanked off the end of the cylinder you could pump it full of grease to push the piston out. It worked a treat!
@Detlef-p3j
@Detlef-p3j Жыл бұрын
I added some tipps & tricks. 40 Years in the hobby. See below. Great video, great work. Cheers.
@nigelkemp9492
@nigelkemp9492 2 жыл бұрын
I can’t add anything that hasn’t already been said. Great work as usual. Thanks!
@JethroBronner
@JethroBronner 2 жыл бұрын
I appreciate that!
@alfaclassicarestore
@alfaclassicarestore 2 жыл бұрын
Jethro great job.I did this brake booster bonaldi on gt junior few years ago.buon lavoro bests regards from slovakia👌
@JethroBronner
@JethroBronner 2 жыл бұрын
Thanks! 👍
@shedtime_au
@shedtime_au 2 жыл бұрын
I've always looked at brake boosters as a monolithic unserviceable lump, and in some cars they are. This was quite educational, I've never seen one with a removeable band.
@JethroBronner
@JethroBronner 2 жыл бұрын
I used to feel that way too
@manfredschmalbach9023
@manfredschmalbach9023 2 жыл бұрын
Even the ones with bent tin to keep everything together are repairable/rebuildable. Learnt that in Middle East where my T1N 212 Sprinter had a total booster failure: the fixer got it bent open, cut a new diaphragm out of plain rubber and put it back together. I still drive with it confidently 10 years after, even with a low km parts-car spare in the cellar meanwhile. Never touch a working system, and repair the non-working ones properly once need be. I gotta learn to metal-plate like Jethro does it - these Mercedes Boosters are black matte on bare steel and turn into crumbly brownish once You spill a first drop of brake fluid on those.
@shedtime_au
@shedtime_au 2 жыл бұрын
@@manfredschmalbach9023 We've all had to do emergency repairs, and that sounds like the guy knew what he was doing. My best effort was fixing a broken heater hose stub by jamming a cork in it. I managed to get to a tiny town, asked for a cork at the local general store and borrowed a knife to pare it into shape. It was still there when I sold the car - a Ford ZD Fairlane - to my cousin two years later.
@manfredschmalbach9023
@manfredschmalbach9023 2 жыл бұрын
@@shedtime_au Have a friend with a heavily changed, even more used Yamaha 650 XS; she's third owner and the thing meanwhile has unbelievable 470 k km - she got it with 50 tkm in its fourth year 1979 from the second owner, changed it to her liking from ape-hanger to step-seat to better brakes to whatever else plus a Leopard paint she did herself (artsy painter, airbrush artist and hyperrealism-airbrusher beneath 12 other artsy fartsy skillz ...) and has used it ever since - wasn't even unregistered for a winter in 43 years. We were on a tour somewhere in Syria back in the days while it still was an adventure and not yet idiocy when her rev meter shaft-inlet (engine side) broke off - there's oil behind it, and it started spilling. She stopped it with her thumb, burnt herself good, grabbed a couple pine branch stumps in a hurry, the only thing resembling a cork or filler piece within her reach with the thumb on the leak, tried some of 'em and put the one in that fitted best. We cut the excess with a swiss knife's saw after it swelled absolutely tight. That was 1993 or so ... since then, the engine was opened once and bigger pistons with new rings were put in after honing, and some minor other stuff, the deleted starter motor was put in again for her sixtieth birthday and shit like that - the pine bung still is in there, she says she feels her engine and does not need a rev counter, she had in the bum .... The emergency compromise usually is the longest lasting solution.
@shedtime_au
@shedtime_au 2 жыл бұрын
@@manfredschmalbach9023 I like this story. :-)
@tuneskramer69
@tuneskramer69 2 жыл бұрын
Only perfection is good enough for Jethro, another piece of art! Good luck with your business, and remember we all watch the other cartubers too, so a little less perfection is good enough for is 2. Not that i don't appreciate your hard work, but you gotta watch yourself sometimes. Best of luck
@MrXyzasdf
@MrXyzasdf 2 жыл бұрын
@23:57 - It was not mention but I feel I should state it here for everyone's benefit. There is a difference between a vacuum hose and a regular PCV hose. A vacuum hose is designed and reinforced in such a manner that the hose stays rigid and does not collapse under a vacuum. Although, the performance of the PCV hose might be satisfactory now. You may want to reconsider your choice for long term reliability and safety. Think about the condition and environment the hose will have to endure. The prolong exposure of high temperature will make the hose soft and supple and under the right circumstances the hose may collapse, leading to unsafe brake operation.
@neilcowan535
@neilcowan535 2 жыл бұрын
Immensely satisfying. Not only that: no copper grease on my hands! Great video. :)
@JethroBronner
@JethroBronner 2 жыл бұрын
Glad you enjoyed it!
@Gassit
@Gassit 2 жыл бұрын
Nicely done Jethro. At least its serviceable, most brake boosters are a sealed unserviceable unit and I would imagine that a replacement unit for this car would be unobtanium.
@JethroBronner
@JethroBronner 2 жыл бұрын
They're actually not too difficult to get new, but they are just a lot of money.
@JLo1960
@JLo1960 2 жыл бұрын
Hey Jethro, that was superb and so relaxing to watch. I love rebuilding parts on old cars and bikes, so satisfying. Top work Sir!. 👍
@JethroBronner
@JethroBronner 2 жыл бұрын
Thanks 👍
@jimbrewer331
@jimbrewer331 2 жыл бұрын
Bravo, nice video. You removed the mystery of these things.
@dirkdutzmann9250
@dirkdutzmann9250 2 жыл бұрын
Whow, amazing again! My Julia needs some help at the same breakpart. Your video took away my fear of being overtaken a bit. Thank you for that!
@JethroBronner
@JethroBronner 2 жыл бұрын
I'm glad this video is useful!
@shedtime_au
@shedtime_au 2 жыл бұрын
Just watched a '67 Duetto Spider auctioned off online. It went for AU56,000 which, considering it was in fairly average condition, was a bit of an eye-opener. Oh, and you've inspired this old Alfa fanatic to re-enter the fray. Later this week I'll be taking delivery of a 2003 147 Ti 5-speed. It's not as cool as a Duetto but I'm a pensioner, so have to work with what I can afford. It has 88,600km on the clock and needs a crank sensor, an alternator, a cambelt set (7 years!) and some serious clearcoat correction. But at AU$2,200 I just couldn't pass it up.
@alfa168fan2
@alfa168fan2 2 жыл бұрын
Always enjoyable to watch your “clean” video..
@Moraren
@Moraren 2 жыл бұрын
If only things still were made to be this serviceable. I had never given much though before on how a booster really works, but I think I understand it now. Quite interesting and well put together!
@JethroBronner
@JethroBronner 2 жыл бұрын
Yes it's a shame that things are no longer built to be repaired, but only replaced.
@pierrelataillade7564
@pierrelataillade7564 2 жыл бұрын
Jethro.... good to see you today.. this booster tutorial was excellent. I learned a few thing today... Not sure the Alfa hand book went to that extent on the subject....very nice..
@JethroBronner
@JethroBronner 2 жыл бұрын
Thanks! Yeah there's actually nothing in the available workshop manuals about boosters.
@manfredschmalbach9023
@manfredschmalbach9023 2 жыл бұрын
@@JethroBronner These boosters were after-market parts fitted by dealers, right? So, Alfa wasn't even supposed to take these into their manuals I reckon. I had a couple Bertones back in the days (LHD though, obviously, as a Bavarian😁) and all came from Italy without boosters. Otherwise I found Alfa manuals pretty usable compared to Fiat or Peugeot manuals. Cheers!
@guyberger3445
@guyberger3445 Жыл бұрын
Good Job: Clear explanation and good photography. Thank you!
@SeasideGarage
@SeasideGarage 2 жыл бұрын
Really nice.... Some things strangely falls into a category of "unserviceable"... I really like it when that is proven wrong.. :)
@eshmunvideochannel2019
@eshmunvideochannel2019 2 жыл бұрын
Thanks a million for the non-stop detail your videos convey.
@JethroBronner
@JethroBronner 2 жыл бұрын
My pleasure!
@markbattley8515
@markbattley8515 2 жыл бұрын
Perfect timing Jethro, I have just stripped both of the boosters for my 1973 2000 GTV and am about to clean and reassemble them. Thanks for the video! I have the rebuild kits from Classic Alfa - when I bought those in 2019 they were also available from Highwood and Alfastop. They include the diaphragm, seals, gaskets, bolt lock plates and the 90 deg hose. 15+ years ago I had both sleeved in stainless but one diaphragm had now split and both boosters were leaking slightly into the vacuum chamber. There was quite a lot of crystalized brake fluid in the air valve. I have also just rebuilt the double circuit master cylinder, honed with a new set of seals. My fingers will be well crossed when I put it all back together again :) Early in my ownership of the car I had trouble with the rear brakes being slow to release, which turned out to be the small 90 degree rubber hose collapsing under vacuum. Took a while to find!
@JethroBronner
@JethroBronner 2 жыл бұрын
Oh yeah the dual circuit master cylinders can be very tricky to get right, and bleeding them isn't easy either.
@markbattley8515
@markbattley8515 2 жыл бұрын
@@JethroBronner yep, bleeding can be a hassle with this version of the system. I have found that it helps to do a final bleed with the engine running so that the boosters are operating. I also added "speedbleeder" non-return nipples to the calipers, which made it a lot easier with one person. I will be interested to seeing how the bleed process goes with everything I'm replacing now...
@runningon-dinosaurs1569
@runningon-dinosaurs1569 2 жыл бұрын
@@markbattley8515 I have a 1977 UK RHD 2000 Spider, with all the joys of dual circuit brakes including twin Bonaldi brake servos. I pressure bleed through the brake reservoir cap but limit the pressure to around 12 psi which works for me. A word of warning if you use this method the flexible feed pipes from the bottom of the reservoir to the rigid brake pipes must be secured with good quality stainless steel hose clips- a lesson I learnt nearly 34 years ago now!
@1st_Gen_Life
@1st_Gen_Life 2 жыл бұрын
I’m always amazed at all the parts that you manage to rebuild. Great work as usual 👍
@JethroBronner
@JethroBronner 2 жыл бұрын
Thank you very much!
@l9jjp
@l9jjp 2 жыл бұрын
fantastic episode and like others comments i love the fact you dont have rave music playing all the way through. its so relaxing watching you and i love that you can hear your spanners clanking as you work .. awesome cant wait for the next .. respect from the uk
@JethroBronner
@JethroBronner 2 жыл бұрын
That's very kind of you to say! Thank you!
@alaskanrockvodka9622
@alaskanrockvodka9622 2 жыл бұрын
Fantastic ep, J. Demystifying but in a real easy to follow way. Much appreciated.
@stephenb4164
@stephenb4164 2 жыл бұрын
Great information and filming.
@JethroBronner
@JethroBronner 2 жыл бұрын
Thank you!
@cosolote
@cosolote 11 ай бұрын
the perfect instructional video!! thank you I m about to rebuild the 2 boosters in my Lotus Europa (Lockheed brand but very similar I guess)
@markbattley8515
@markbattley8515 2 жыл бұрын
Just rewatched this as I reassembled the first of my two boosters. So useful to double check the order and orientation of all of the parts. Such an informative video. Thanks so much Jethro!
@prakashnarismulu3332
@prakashnarismulu3332 2 жыл бұрын
Fascinating content as always 👍🇿🇦
@JethroBronner
@JethroBronner 2 жыл бұрын
Glad you enjoyed it
@prakashnarismulu3332
@prakashnarismulu3332 2 жыл бұрын
Time for the next episode
@soonerlon
@soonerlon Жыл бұрын
Brake fluid being drawn into an engine (in small quantities) isn't a horrible thing. Many, many moons ago, my high school physics teacher owned a car repair shop. I was having trouble with carbon build-up on the valves, so he showed me how to mix up a 50/50 mixture of brake fluid and auto transmission fluid and poured down the carbs- it really cleaned up the cylinders!
@bloodreighn
@bloodreighn 2 жыл бұрын
nice, they look similar to the VH44 brake booster
@alastairgordon-forbes3139
@alastairgordon-forbes3139 2 жыл бұрын
Precision work as usual. Meticulous. I really enjoy your attention to detail.
@JethroBronner
@JethroBronner 2 жыл бұрын
Thank you very much!
@AmericanInAustria
@AmericanInAustria 2 жыл бұрын
After my 5th or 6th booster on my '65 it was nice to see just how simple of a part has given me so many headaches! Great video, Jethro.
@manfredschmalbach9023
@manfredschmalbach9023 2 жыл бұрын
Excellent video, highest quality technical content and taking the angst-loaden mystery out of the brake-black-box. I really enjoy Your calm, music-, fake-suspension- and drama-free tech vids very much. I gotta learn how to metal-plate like You do it - that quality surface is way over any three layer paint "restoration" I ever tried with the outsides of crumbly-brownish booster housings. Thanks for sharing!
@Gionnygarage
@Gionnygarage 2 жыл бұрын
Thank you very much for your video, I've been waiting for it for a long time. It's the only video on the internet that explains how to reconstruct a bonaldi, fantastic!
@JethroBronner
@JethroBronner 2 жыл бұрын
Glad it was helpful!
@malcolmscott4150
@malcolmscott4150 2 жыл бұрын
Just fabulous craftsmanship brilliant content Jethro 🥳👍
@JethroBronner
@JethroBronner 2 жыл бұрын
Thank you!
@1ocean515
@1ocean515 2 жыл бұрын
Nice job! Nice result!
@JethroBronner
@JethroBronner 2 жыл бұрын
Thank you!
@f1lmm
@f1lmm 2 жыл бұрын
Wow what great blog 👌👍🏼
@JethroBronner
@JethroBronner 2 жыл бұрын
Thank you!
@michaelskinner896
@michaelskinner896 2 жыл бұрын
Such peerless work, and I always celebrate when you release a new video! Spectacular filming, and great voice-over. Thanks for this!
@robstewart8691
@robstewart8691 2 жыл бұрын
Fantastic work as always! Reassembly of the main unit rubber seal looked like a tedious task with a spring constantly fighting against you and a a shaft to line up...and a clamp to try slip on 😬
@JethroBronner
@JethroBronner 2 жыл бұрын
Yeah that requires some wrestling to get it together, if you let go it will shoot parts across the workshop.
@marcusott2973
@marcusott2973 2 жыл бұрын
Much awaited and appreciated, fine filming and engineering as always. Thanks 👌
@JethroBronner
@JethroBronner 2 жыл бұрын
Glad you enjoyed it
@Garg3984
@Garg3984 2 жыл бұрын
Great video
@JethroBronner
@JethroBronner 2 жыл бұрын
Thanks!
@TylerLinner
@TylerLinner 2 жыл бұрын
Just got around to watching this one. It appears to be what we in America call a "hydrovac" booster, actuated by hydraulic pressure instead of just a pushrod from the pedal. There is one on my 1962 Ford F-600 truck project! I sent mine out to be restored. it was worth $400 to save me time hunting for parts! I made a video on the history and basic operation of the unit over on my other channel Duluth Junction Workshop. Over here they were most common on medium duty commercial trucks as well as luxury cars, so it's very interesting to see the same setup on a sports car! I have to imagine they had to use a hydrovac due to space limitations. Cheers!
@bluenwet
@bluenwet 2 жыл бұрын
Fantastic Jethro! Thank you.
@1BCamden
@1BCamden 2 жыл бұрын
Great video, thanks so much
@JethroBronner
@JethroBronner 2 жыл бұрын
Glad you liked it!
@theprisonernumbersix996
@theprisonernumbersix996 2 жыл бұрын
Perfect job , bravo !
@JethroBronner
@JethroBronner 2 жыл бұрын
Thank you!
@paulman2270
@paulman2270 2 жыл бұрын
Excellent
@addariracing
@addariracing 2 жыл бұрын
Clear and professional work as usual, I really enjoyed watching your video, useful tips and extreme precision in the cleaning and reassembling parts. I will wait for the next episode to learn something new. Thanks for your videos.
@Bart-ut7cn
@Bart-ut7cn 2 жыл бұрын
Very nice and detailed video, thx!
@JethroBronner
@JethroBronner 2 жыл бұрын
Glad you enjoyed it!
@MrDoroh
@MrDoroh 2 жыл бұрын
Alfas are the only cars I've ever heard of to have problems with vacuum brake boosters, at least as catastrophic as sucking brake fluid into cylinders :D
@JethroBronner
@JethroBronner 2 жыл бұрын
I imagine anything with a vacuum booster could end up with fluid in the intakes if the seals leak.
@EliteRock
@EliteRock 2 жыл бұрын
I was pretty common with all of them back in the day, some makes more than others. Many an owner/home mechanic baffled by a smoking exhaust.
@MrDoroh
@MrDoroh 2 жыл бұрын
@@JethroBronner most old ones i’ve seen had them separate. 1960’ fiat 124 had a brake master cylinder bolt on to the booster. With it being a self contained unit operated by vaccum that just increases force on the pushrod
@titanus49
@titanus49 2 жыл бұрын
@@MrDoroh The Fiat 124 Coupe used a different brand of booster called Beditalia which I assume was made by Bendix in Italy. As you say ,the booster was attached to the end of the master cylinder. The later 105 Alfas from 1970 onwards had the same system as the Fiat 124, because by then Alfa had ditched the floor mounted pedals and mounted the pedals from the top . Right hand drive 105 cars kept the floor mounted pedals, so it was not possible to mount the booster at the end of the master cylinder.
@titanus49
@titanus49 2 жыл бұрын
@@EliteRock Yes it was hilarious to see the look of bafflement of the not so experienced mechanics, but the good mechanics always checked the vacuum line from the cylinder head to the brake booster, brake fluid there meant the engine was burning brake fluid, hence the white smoke
@jackn4853
@jackn4853 2 жыл бұрын
Excellent, thorough workmanship and very satisfying to watch and listen to. Would it be possible ti take a 5 minute time out to show us your watches?
@JethroBronner
@JethroBronner 2 жыл бұрын
Maybe at some point I'll do a video about my watches, but there are only 2 of them.
@kenchun7742
@kenchun7742 2 жыл бұрын
Top quality content, enjoyed every second of this video!
@JethroBronner
@JethroBronner 2 жыл бұрын
Glad you enjoyed it!
@mancaveproductions00
@mancaveproductions00 2 жыл бұрын
Maybe alfa part supplier's should sponsor you for instruction video's, well done.
@JethroBronner
@JethroBronner 2 жыл бұрын
I've actually recently made a deal with Classic Alfa, and I'll be using their parts in some upcoming projects.
@geoff3656
@geoff3656 2 жыл бұрын
Jethro .. that’s a perfect rendition of how it’s done.. well executed.! The best bit was the leopard scarf rag.. too good to use , I would have been wearing it hehe.. Love to see your plating process...
@vijaywaingankar8352
@vijaywaingankar8352 Ай бұрын
Good work ❤
@autka_me
@autka_me 2 жыл бұрын
It's great that they are user serviceable. ATE in my Saab 96 is factory sealed
@JethroBronner
@JethroBronner 2 жыл бұрын
Ah well that's a pain. I really like how everything in the 1960s was built to be serviceable, unlike how things are now.
@autka_me
@autka_me 2 жыл бұрын
@@JethroBronner good thing they are cheap. But yeah, it's crazy like service manuals used to show how to set up ignition timing and replace crankshaft bearings and now it's all "please go to authorised service".
@JethroBronner
@JethroBronner 2 жыл бұрын
@@autka_me yes and “do not drink contents of battery”
@MrKombiman
@MrKombiman 2 жыл бұрын
Quality content done with style! Nice work JB!
@JethroBronner
@JethroBronner 2 жыл бұрын
Thank you!
@mosca3289
@mosca3289 2 жыл бұрын
Thanks
@JethroBronner
@JethroBronner 2 жыл бұрын
You're most welcome!
@Timetraveler101
@Timetraveler101 2 жыл бұрын
I feel like..I should drink coffee while watching ..
@JethroBronner
@JethroBronner 2 жыл бұрын
I’d recommend it ☕️👍
@stevenjoppa2707
@stevenjoppa2707 2 жыл бұрын
Wow you have know idea how much this helps me 😀 Thank you very much for a great tutorial, and yes you explained it perfectly
@JethroBronner
@JethroBronner 2 жыл бұрын
You're very welcome! Thank you!
@mathewwatt7249
@mathewwatt7249 2 жыл бұрын
Great video Jethro!
@motoriaggressivi5058
@motoriaggressivi5058 2 жыл бұрын
Nice job. Is there an overhaul kit where all the new gaskets are present? If so, can you pass me the purchase link? Thank you
@MrLargePig
@MrLargePig 2 жыл бұрын
Perhaps a it of lapping, on the end of the rod that fits into the high pressure piston? Just an idea...
@JethroBronner
@JethroBronner 2 жыл бұрын
Yeah that's a good idea, especially with one that's been refaced.
@Dixler683
@Dixler683 2 жыл бұрын
During my college days in the mid 1970’s I bought a used 1969 Duetto Spyder. Correct me if I am wrong but I believe it had 2 Bonaldi boosters. Both leaked, constant spongy pedal and no one could repair it. Ended up removing the boosters and the pedal was finally firm but needed muscular legs to stop. Very dangerous. ATE calipers all around. Too bad I didn’t have access to your knowledge. The zinc plating looks very good, should have given it a dichromate dip for corrosion protection.
@JethroBronner
@JethroBronner 2 жыл бұрын
Yes the later 1750/2000 cars had duel circuit brakes, and had duel boosters. I'm very new to doing electroplating, so I'll look into that for my next batch, thank you!
@TheEurop24
@TheEurop24 2 жыл бұрын
On top of all right comments: did everyone notice the good taste "touch" of using a fontain pen to mark the lines of all those small parts, certainly a "Montblanc"? Justy amazing how Jethro is able to turns engineering into art!
@JethroBronner
@JethroBronner 2 жыл бұрын
Thank you! Yes it's a 145, which was a gift from a dear friend.
@manfredschmalbach9023
@manfredschmalbach9023 2 жыл бұрын
Of course - could You _not_ notice something like that?
@djs1ms
@djs1ms 2 жыл бұрын
I did notice the MB pen too :D
@kallenisse585
@kallenisse585 2 жыл бұрын
a great video like always :-)
@JethroBronner
@JethroBronner 2 жыл бұрын
Thank you!
@Toteninsel87
@Toteninsel87 Жыл бұрын
Hi Jethro! I join the complements for the excellent work you did in this video! I have a technical question for you, if you're so kind to help me. Is the spring you put on at 20:35 the one from the previous brake booster? I saw that the spring is not included in the repair kit (neither yours nor mine). Since I lost the old one, could you by any chance tell me the measurements of the spring you have so that I could get it somehow? Thank you very much!
@fabiocelentano627
@fabiocelentano627 6 ай бұрын
Hello Jethro, really nice job on your Duetto. Your videos are so helpful for my restoration. As i watched this video I mentioned that on mine air valve the small spring is missing😢... obviously someone disabled in the past and lost this spring 😢. Could you give me some information of this particular spring? Greetings from Austria. Fabio
@hpevans9041
@hpevans9041 2 жыл бұрын
Hi Jethro, it’s been a while, any more content in the pipeline? I’ve missed your top quality videos
@JethroBronner
@JethroBronner 2 жыл бұрын
There's a new video up today!
@glenjo0
@glenjo0 2 жыл бұрын
My '67 Duetto did not have the booster. The big problem I ran into is the calipers were aluminum with chrome plated piston bores, and could not be just simply re-built if corroded. Once I got good calipers, the brakes were very good.
@JethroBronner
@JethroBronner 2 жыл бұрын
Aluminium callipers? Maybe it was optioned with GTA callipers? That would be a rare and expensive set of callipers.
@EliteRock
@EliteRock 2 жыл бұрын
@@JethroBronner Renault used to use alloy calipers - I was surprised to find them on the front of a 1976 12 (not a Gordini or anything like that) I once owned. Under-rated/under-appreciated cars BTW.
@opuscat999
@opuscat999 2 жыл бұрын
JB, the hottest auto vlogger on KZbin by far!!!!!!
@jimgordon3274
@jimgordon3274 2 жыл бұрын
Hi Jethro, I find your movies both entertaining and informative, thank you. However there is one area that I can't find anywhere and that is a repair of a 116 rear caliper. I know you specialise in 105's however can you give this a thought as no one else seems to want to cover this topic. Regards. Jim
@dalamar6228
@dalamar6228 2 жыл бұрын
You mentioned electroplating the parts. Can you please say if it was a zinc plate with a blue passivate? The finish was lovely and even.
@jackhudson8038
@jackhudson8038 2 жыл бұрын
Whoa.... Do you have the brakes wrapped up and driving it ? We sure would like to hear about that 😎
@markdanford1910
@markdanford1910 2 жыл бұрын
Electro plating instruction would be a very interesting video.
@JethroBronner
@JethroBronner 2 жыл бұрын
I’m really not in any position to be showing anyone else how to electroplate, I’m very new to it
@markdanford1910
@markdanford1910 2 жыл бұрын
@@JethroBronner I understand I like restoring old BMW motorcycles and it would be a great skill to possess thanks
@tunepatrol
@tunepatrol 2 жыл бұрын
I wonder if I'm right in thinking these are a "remote" type of booster? That is to say it is not physically connected to the brake master cylinder actuated by the driver. You normally see the booster located on the same side of the car as the driver adjacent to the bulkhead but not in this case. The early Ford Escort Mexicos and RS1600's had a remote brake booster made by Girling which were a nightmare to rebuild even in the 80's when parts were available off the shelf. Instead of being physically actuated by the brake pedal they are actuated by vacuum which adds a another bunch of seals and pipes and valve which can go wrong.
@JethroBronner
@JethroBronner 2 жыл бұрын
Yup this is the remote type of booster. The later LHD Alfas had boosters incorporated into the brake master cylinder, but that won't work on RHD cars, as there is not space on the right side of the engine bay, so they had to use remote boosters.
@srlane61
@srlane61 2 жыл бұрын
Great video, thank you, and great channel too!. I finally fixed an old "juddery" brake problem on a 1966 GTV by rebuilding the servo/booster this year. But...like you, I had a broken red plastic spring perch, so had to re-assemble with the remnants... Could you let me know if/where you managed to buy that white one - thanks!
@JethroBronner
@JethroBronner 2 жыл бұрын
The white one came from my spares, I have a few boosters in parts that I keep around for this sort of thing. Whenever I see people selling Alfa parts I try buy old boosters.
@srlane61
@srlane61 2 жыл бұрын
I thought you might say that 😄 thanks for the reply - all the best with the channel.
@stevewuertz3598
@stevewuertz3598 2 жыл бұрын
As always simply fantastic. We all love your work. I don't have a deep stash of parts to pull spares from. What sources for booster parts do you know of. Is there a Bondi specialist supplier of components you know of or is there a kit from Classic Alfa or another supplier/ Thanks as always
@JethroBronner
@JethroBronner 2 жыл бұрын
For new service parts Classic Alfa carries what you'll usually need, and new boosters if you really can't repair an old one, I've linked their parts in the description of the video.
@nelsonbroden7043
@nelsonbroden7043 2 жыл бұрын
Amazing videos to follow. Where do you get your parts in SA? Just got my hands on a 73 Gtv in Pretoria! Been standing since 89
@JethroBronner
@JethroBronner 2 жыл бұрын
Thank you! And congratulations on the new car! I get pretty much all of my parts from classicalfa.com.
@Gjldo
@Gjldo 2 жыл бұрын
you could probably manufacture a somewhat decent filter from an air silencer for pneumatic cylinders, by the lloks of it a 1/4'' cylinder silencer would do
@marcsimon2825
@marcsimon2825 2 жыл бұрын
Hey Jethro you say very simple 🤣 but where did you find the explanation about how this booster works ? so good video again ... for a little bit more i would think i could do it myself 🤣🤣🤣
@JethroBronner
@JethroBronner 2 жыл бұрын
When I started rebuilding these I just took one apart to see how it worked, It's pretty self explanatory if you can follow the path of air and brake fluid in your head.
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