1977 Triumph Bonneville T140V - Reassembly

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Edit: Teardrop tank, not peardrop!!
I’m finally getting around to working on Frank’s poor Bonneville! I had an extra long vacation over the Christmas holidays and promised myself that I would spend a little bit of time working on his bike, so that we can get it back to Frank in early 2019!
Started off by cleaning the carburetors in the ultrasonic cleaner and they came out great. Installed new carburetor gasket kits etc. and re-fitted them to the bike.
The biggest hassle was refitting the side covers/panels. I’ve never been a huge fan of these large panels on the OIF (Oil In Frame) Triumphs. They seem so clumsy compared to the earlier pre-units and 60s unit construction bikes.
Anyway everything seem to go back OK and now we are ready for the next job!
Music: Breeze by Ikson
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27 июл 2024

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Комментарии : 72

@jamesa6272 5 лет назад

After countless mechanics having their grubby hands on my fathers 78 bonneville t140v. The carbs were to blame. The bike never ran correctly with the stock amals as shown on this bike in the video. I finally grew a pair and started to work on the bike. I bought aftermarket “new” amal carbs exact look alikes of these carbs. New metals for the body and slides. No more warping with heat. No more choke either just tickle them till the gas comes out and kick it over. Starts 1st/ 2nd kick everytime. Best thing I ever did was replace the carbs.

@fiveowaf454 3 года назад

The new Amals by all accounts are vastly improved over those fitted to the bikes back in the day, definitely worth the money to switch them out if the originals and seen a few miles and plenty of "adjustment" by the untrained. These bikes are often considered hard to start reliably but if you carburetor(s) are working correctly as they should, they start with ease.

@fredgrove4220 5 лет назад

I've got a 1973 T140V, bought quite a few years ago from Clive Humphries, when he had his place at Kenilworth near Coventry. He had totally rebuilt it from the ground up, it only had 11000 miles on it, it has 26000 now, and still 100%. Wouldn't change it for the world.

@TheMightyGarage 5 лет назад

Brilliant! Thanks for sharing Fred. Cheers, Mike

@micpotato8158 5 лет назад

I always like to watch your patient and planned approach when you are working on these bikes Mike

@TheMightyGarage 5 лет назад

Thanks so much. It's a lot of fun. Best wishes MP.

@johnmcclain3887 2 года назад

Hi Mike, I'm here once again, having gotten my 78 Bonneville, and watching to see the process I've not done in four decades. It seems there is a substantial difference in my carburetor's from this one, mine seem to point straight back, on spigots, rather than splayed I've only just noticed this. I've had a short ride, just through the driveway so far, but it runs well, but no plate yet. I hope to have a decent ride in the next couple days and figure out how it runs. Thanks again, I really enjoy your steady, stolid way of work, getting the jobs completely done.

@fiveowaf454 3 года назад

Those sidecover/airbox parts are a complete pain to remove and refit, so much so it puts me off working on my Tiger 750, I'm glad I'm not the only one who finds it that way. While I appreciate they had to go down the airbox route due to noise regulations etc. but how they came up with this design as the best solution is beyond me.

@rickconstant6106 3 года назад

In my experience, you very rarely need to take the whole airbox assembly off. My 78 T140V has the external side covers, retained by springs, and once those are off, the airbox outer panels have only the centre nut each side to give access to the air filters. The only fiddly part is the spire washers which retain the air filters and the centre fixing bolt in the housing. The rear, steel section of the side panels doesn't need to be removed for normal servicing (all that's behind mine is the ignition module on one side and the regulator/rectifier and flasher unit on the other).

@fiveowaf454 3 года назад

@@rickconstant6106 Sounds like the 78 is a different set up. I own several motorcycles and without doubt the 73 Tiger Airbox setup is the most user unfriendly out there. Servicing the filters etc. is ok, but if you need to remove the carb for any reason, it becomes quite a chore compared to anything else I own.

@rickconstant6106 3 года назад

@@fiveowaf454 I hadn't realised it would be that difficult, I've never worked on the single carb version. On the Bonneville, once you've removed the air box side covers, the carbs come off fairly easily.

@fiveowaf454 3 года назад

@@rickconstant6106 I guess in the scheme of things it's not that difficult, but it's aggravating, trying to hold the two halves together while getting the small bolts together that are down inside the box itself. I think like many things concerning Triumph of the era it was a "workaround" to have an air box for the single carb, which is made a tight fit by the frame which has the large down tube for the oil. Usually on a single carb machine removing the carb is so straightforward.

@johnmcclain3887 2 года назад

I really like the way you speed up the play, getting more detail than time would allow at speed. I've not worked on one if these since the 80's, and that was monoblock carburetors. I will be doing the same with a 78 in the coming weeks, waiting for it to arrive. Thanks for sharing this, reminds me of what must come apart, and go back together right. Very nicely done.

@TheMightyGarage 2 года назад

Thank you very much John. I’m glad that you enjoyed the video. Yes, I like to speed some of those routines up to avoid keeping everyone waiting. Good luck with your 78 Bonneville! Best wishes, Mike

@johnmcclain3887 2 года назад

@@TheMightyGarage Hi Mike, I've got my Bonneville now, and have enjoyed riding it the last week or so. I hope to come out that way for a ride this summer, if I can get away from the house, I've really enjoyed your videos over the last months, your club gatherings well included. I suspect I will be tuning the carbs and synchronizing them, it runs well, but a bit rough on idle. Thanks again!

@harveymushman2219 2 года назад

Like my old Triumph...I had to rebuild the top end one time when a Piston wrist pin cir-clip came loose ....still got me home from Las Vegas....over 400 miles i kept dumping oil in her

@TheDavey333 5 лет назад

Great watching you Mike, with a good brew. love those bonnevilles, oh how you spend your days 👍

@TheMightyGarage 5 лет назад

Hehe, thanks David. It's just a great escape from my desk job! Best wishes, Mike

@bm7760 Год назад

Me too. In the shed with a beer or cuppa. Keeping out of the wife's way... ;-)

@tadpoles10 5 лет назад

You needed that 'cuppa' at the end Mike, Have to agree on the later Triumph design not as 'aesthetically ' pleasing as the early models, mind you it could an 'age' thing (mine not the bikes' ) thanks as always for taking us along & all the work involved. atvb t ..

@TheMightyGarage 5 лет назад

Thanks a lot Terry. Glad you liked it... I have some more interesting projects coming up soon..!! Cheers, Mike

@johnmcclain3887 2 года назад

I might be getting old myself, can it be, "age thing" everything goes downhill, with change? I really like the way my 64 Triumph looked, my 65 Ducati, and a 37 flathead harley. I always liked the individual aircleaners right on the back of the carbs. I thought those were mikuni's, until you stated they were later amals. I am looking forward to doing the same thing very soon on a new to me triumph. It's nice to see all the bolts I need to take out, I've not seen in forty years. Thanks!

@johnmcclain3887 2 года назад

@shoshone3 5 лет назад

The best affordable way to get into vintage British biking. I've owned more of this model than any other bike. Put the electrics in order and it will hold together. Oh I forgot about those carburetors. And the clutch. And that push in exhaust....... pesky pushrod tubes....

@TheMightyGarage 5 лет назад

Hehe, thanks a lot Shon. Totally agree ;)

@fiveowaf454 3 года назад

Have to agree/sympathize on the push rod tubes, especially the front on mine. It had a small leak when I bought mine which I fixed, but yesterday for no apparent reason it started leaking again badly :( it's such a fiddly job with so much to remove to carry it out with then no certainty you have the problem resolved. I never understand why the barrel could not just have been modified with passageways for the push rods as one piece.

@rickconstant6106 2 года назад

I converted mine a few years ago to screw-in stubs and clamp-over downpipes, so now it has a proper, gas-tight seal on the exhaust.

@chamberizer 10 месяцев назад

The two Air Box screws & nuts - I found it is easier just to use a couple of small Zip Ties. I guess you need to keep original for your customer? Zip Ties are easier & then you don't have to worry about screws coming loose & going into the carburetor. I have a 1973 Tiger, which has single carburetor. My one side piece that said "TIGER" the sticker peeled off from the Chrome piece. I took the sticker from opposite side & had it copied.

@marquee6 4 года назад

The 1978 had a cover that went over the cover that was on the 1977. Pain in the ass.

@MothershipVideos 3 года назад

Nice work.

@bm7760 Год назад

I have similar side cases, only mine are half aluminum (78). They do seem a bit of a faff but the anesthetics are growing on me.

@charlesmiddleton9952 5 лет назад

Meriden triumphs benefit from valve guide replacement,and proper chain maintenance, pretty simple tasks for a competent motorcycle technician.

@jimh.5286 5 лет назад

Yeah, I don't particularly like those side panels, but the Triumph Peardrop tank is nice. lol

@TheMightyGarage 5 лет назад

Jim H. Ha ha, I was thinking about eating pear drops, cola cubes and sarsaparilla tablets (sweets /candies) when I was a kid 😉

@jagvette1 3 года назад

OK gotta say as a 79 Bonneville owner and also a past Tiger 100ss owner that beezer (BSA) behind you is ferkin BEA UTE FULL

@TheMightyGarage 3 года назад

It really is a great looking bike. Here's a close up of it 😉 ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-5fbEHj7tsSM.html

@kengerard1540 2 года назад

Mike, have you used Emgo exhaust parts on your bikes? Fit, finish? UK parts any better?

@TheMightyGarage 2 года назад

Hi Ken, yes I've used quite a few parts from Emgo from various suppliers here in the US. The quality is very good these days. One example is the gas/petrol tanks for the Norton Commando. They are one of the best reproductions you can buy. My friend also has the silencers/mufflers on his Commando and my opinion is that they look and sound as good if not better than many others that I've seen. For my Commando, I tend to buy directly from Andover Norton in the UK, but many dealers now sell the Emgo parts. I suppose it all boils down to which part you are buying and how concerned you are about being totally original for your bike. I wouldn't have any hesitation buying Emgo parts for most of my bikes, perhaps except for the T110 where I like to get NOS or good second-hand original parts. Best wishes, Mike

@geoffhalsey2184 5 лет назад

I remember in the mid 1970's, the export models of the 750cc Triumphs being in British dealers, after they had been rejected in the U.S, I believe for some kind of emissions problem. Hadn't passed my test then and was in the market for a new Ducati 250cc. However, the Triumphs were only about £75 more, for a shade under £600, new! They looked amazing and not surprisingly flew out the showrooms.

@TheMightyGarage 5 лет назад

Thanks for sharing this Geoff. I bet it was brilliant to see them brand-new!! Hope all is well, Cheers, Mike

@bobkelly2447 2 года назад

I have a 1977 Triumph Bonneville 750 and I was wondering if you noticed that the intake rubbers that attach to the carbs just stick their smaller end through the hole in the plastic with about 1/4" clearance all the way around them ??? talk about a massive air leak and that means you'll be sucking dirty un filtered air by those rubbers all the time ! I was considering on using black silicone calking to fill the gap.... is that what you did already ? because those boots were stuck to the side plates ...their not on mine ! .... I am deep in rear brake repair at the moment on my Triumph .... but there was nothing quite like hearing it Idle like it is supposed to ! on my bike it's tickle the carbs leave the choke all the way open, turn on the key and kick it...usually starts 1st kick...NOW... was a bear before getting it to start. ( pilot jet plugged) good to see another Triumph back on the road !

@rickconstant6106 2 года назад

I think someone must have cut away material around your airbox side cover openings, because the rubber inlet hoses on my 78 T140V are a snug fit in the airbox. As for the choke, after not using it for more than 25 years, I decided I could do without it, so I took the slides, cables and lever off and blanked off the holes in the top covers and inlet stub where the lever bracket mounts. Still starts first time from cold after a tickle.

@jackmccarthy2164 4 года назад

Mike, where in England are you located? Jack

@TheMightyGarage 4 года назад

Hi Jack, I don't live in England. I'm in Portland, Oregon in the USA. We emigrated here in 1997! Best wishes, Mike

@kevinschilling1368 5 лет назад

another very fine video, Mike. quick question,,,what brand/model bike work stand are you using? looks very practical and functional,,,cheers !

@TheMightyGarage 5 лет назад

Hi Kevin, thanks a lot! Yes, it's a very inexpensive motorcycle lift from Harbor Freight. They often run special promotions on the lift and I believe you can get them for about $300. They really help by getting the bike off the ground. There are a couple of settings, depending upon what you're working on. Best wishes, Mike

@kevinschilling1368 5 лет назад

@@TheMightyGarage thank you for the info and tip, Mike, much appreciated, cheers!

@jagvette1 3 года назад

what solution do you use in the 'ultrasonic' cleaner for AL YOU MIN EM UM

@TheMightyGarage 3 года назад

Hehe, I use Simple Green solution in a mixture of approximately 80% water / 20$ simple green. The secret (in my opinion) is not to let the parts sit in the bath for too long. I generally soak them for 10 minutes at a time and then check, stir if necessary and run again for another 10 mins. Cheers, Mike. Here's a link to the cleaner, just to show you (I don't have any affiliations with the product 😉) www.amazon.com/Simple-SMP213421-Cleaner-Bottle-Height/dp/B071L9QW6W/ref=sr_1_1?crid=3I5AWEN32E8U8&dchild=1&keywords=simple+green+heavy+duty+cleaner&qid=1614383439&sprefix=simple+green+heavy+%2Caps%2C219&sr=8-1

@TheReverb1 Год назад

Hello; may I do a question? I have Venhill cables for the choke but do not work; I mean, are too long, Shop said that those are the only cables for the side chokes lever. Can you tell me the length on yours? I am at 25000km from a Triumph shop...hope you can understand the situation. Thank you.

@TheMightyGarage Год назад

Hello, I’m sorry but I don’t have this bike anymore. However, it sounds like the shop has sold you the longer choke cables that are made for bikes with taller handlebars. It is possible for you or someone to shorten the cables to make them fit your bike. You will need to cut them of course, but it is possible to cut the outer cable, inner cable and solder new nipples onto the ends. I hope this helps, Mike

@TheReverb1 Год назад

@@TheMightyGarage I was thinking to cut it and re sold its. I will see if I can do that due to the cable terminals are somewhat different; is a side choke as in this bike featured so cable goes to a joint tube to split. Is a 79 engine into a 67 frame. Then I have a 79 dual plugs head with International specs plus double front discs kit; N Hyde rear sets; N Hyde oil cooler; digital EI for the 4 plugs timed at 32º; 7017R ex camshaft; 32mm carburetors etc Thanks

@paulj6662 5 лет назад

I used to spend hours trying to sort these, it never ends; try not to waste too much of your life on this beloved junk.

@geoffhalsey2184 5 лет назад

In the 1970's UK British motorcycles and cars were sold with a six month or 6000 mile warranty, which seems staggering short today. I've spent many a happy hour nursing old unloved bikes and cars back to health, that I've bought for a song, from that and previous eras. Once up and running again, treated with respect for the age of their design and with regular maintenance, they can last considerable amount of time, especially if you use high spec, modern engineered components, as well as redesigned modifications and electrics. Besides which, life without a half eaten cheese sandwich and a cold mug of tea with greasy fingerprints on them, just wouldn't be the same.

@paulj6662 5 лет назад

@@geoffhalsey2184 It was that last few years when they lost the plot at Meriden, the oily frame was never nice, then they shortened the con-rods, it was an incurable disaster, hideous rubbish from 1971 til the end. i went Italian and loved them instead. sadly Moto Guzzi steadily made the fine Mk1 850 LeMans into a turd too.

@fiveowaf454 3 года назад

@@paulj6662 I love my 73 Tiger because I loved the look of the "Export Bonnevilles" as we called them when I was 17 years old. However the more experience I've gained with mine and a BSA I also have, the more dismayed I am at the way various aspects of the machines continued. While simple in one sense to work on, the number of separate components making up for example the cylinder head make them very time consuming to work on and provide numerous unnecessary places for oil to leak out of. I have several Japanese bikes from the 70's and it's so clear to me as to why they took off and finished the likes of Triumph. As I said I love my Tiger, it's a piece of nostalgia and history for me, but compared to other motorcycles I own from a similar era, I cannot claim it is a good motorcycle by an measure in comparison. If they didn't have such visual appeal, they would be much less popular and cherished IMO. The whole British motorcycle demise with it's lack of innovation to move forward is a huge frustration to me, so I have a sort of love hate relationship with my British motorcycles.

@frankkemble2103 3 года назад

I have a 73 T140 with right shift and drum rear brake. I've spent years modding it, rebuilt motor, megacycle exhaust cam, Mikuni VM34's and I always put my own wiring loom on my bikes. After ten years, it still runs smooth and strong, never lets me down and has 97000 miles on the clock- is this a record for a T140?

@TheMightyGarage 3 года назад

Wow Frank, 97k on the clock on a Brit bike is truly amazing. Congratulations. Would love to hear from the guys about their high mileages. Best wishes, Mike

@MrAndrew1953 5 лет назад

I had a set of upswept pipes made up for my Tiger Trail and a ‘breadbox ‘ tank fitted. I think the Tiger was a better bike with the single Amal - no fiddling with balancing the two on the Bonneville which had a habit of going out of sinc.

@fiveowaf454 3 года назад

I have a Tiger myself and agree with you. I have actually seen period tests data where the Tiger performed marginally better too. With the limited breathing abilities of these old engine designs, the extra potential of the twin carbs is fairly marginal and that's assuming they are dialed in 100% which they often aren't. However on my TR7V the airbox is still incredibly time consuming to work with making even the single carb a pain to remove and work on. Luckily that is rarely required once you have it jetted etc. to suit your needs/altitude. I'd love some upswept pipes.

@rickconstant6106 2 года назад

I've had my 78 T140V for 28 years now, and although I found it tricky at first to deal with the twin mk 1s, I soon got the hang of it. All I do now is, whenever I've had the cables off for oiling, resync them with a piece of wire under each slide, and they're good to go until the next time

@kenpjr57 2 года назад

How do you get the rear brake return spring hooked up

@rickconstant6106 2 года назад

I use a hook made from the heavy gauge wire handle from an old bucket, together with a long, flat blade screwdriver. Hook the end through the spring hook and pull it alongside the operating arm, insert the screwdriver as well and use that to lever against the bottom of the frame, then pull the end of the spring round the arm into position with the hook

@Gerk8 4 года назад

Any updates on this nice old bike?

@TheMightyGarage 4 года назад

Hi, unfortunately the bike has gone back to it's owner now as he moved out of state. However, his son has a shop and is hoping to complete the refresh. Cheers, Mike

@davidmacgregor5193 3 года назад

Is that a Huddersfield accent that you have?

@TheMightyGarage 3 года назад

Hehe, it's definitely a whacky northern blended accent! I've lived in quite a few places in the north and lived in Halifax for several years and worked in Huddersfield. But am originally from Lancashire 😉

@davidmacgregor5193 3 года назад

@@TheMightyGarage Thank you Mike for your reply, I'm originally from Speyside in Scotland, but I've lived in Halifax since 1966. I did detect a noticeable West Yorkshire twang in your accent which is very similar to the way they talk in Huddersfield. I've owned several Triumph's in the 1980's, a '77 TR7RV, a '77 T160V, an '81 T140E and an '83 TSX. Keep up the excellent work on your channel, I find it very enjoyable watching it from here in old blighty.

@TheMightyGarage 3 года назад

Hi David, it's a small world! I also worked at the construction company J&J Fee in Southowram for a few years and we had some terrific nights out in Halifax! Thanks a lot for your note. Best wishes, Mike

@54macdog 5 лет назад

Yes, the side panels are ugly, and as for those mufflers... Seems that Triumph were just making it up as they went along once BSA had folded.

@TheMightyGarage 5 лет назад

Yes, I agree. I think they could have made them a little nicer but I do remember that the styling was more "boxy" back then! Cheers, Mike

@fiveowaf454 3 года назад

Noise regulations forced the changes to the air intake and large silencers, unfortunately by that point Triumph's finances seemed to dictate that everything was rather messy as they couldn't redesign or reconfigure much else to provide a nice solution. Having been a teen in the 70's when I first really started to notice motorcycles, I actually like the look of those 70's Triumphs with the "Export" US tank, because that's what first appealed to me. However as a current owner of one, I hate the rigmarole involved with the side panels and airbox whenever you need access or on my Tiger to remove the carb.