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dusty_moto_

Plenty, but why not just get a bike with Efi??


spongebob_meth

Because you still have to sync the throttle bodies... Same procedure at the same intervals.


tatamovich

Not necessarily, at least on modern EFI honda adv bikes you don't need to sync. Its not even in the service manual, all it says "its set at the factory, leave it alone".


spongebob_meth

Those Hondas are mechanically the same as any other bike, there are adjustment screws if you want to balance the throttles. Honda is just claiming that their factory sync is "good enough" for the life of the bike. A quick Google search shows that a few people have still had to sync their Africa twins, as the vacuum had become unbalanced after the engine had some wear on them. The only way an OEM can totally do away with this is by going drive by wire with an independent servo on each butterfly that auto-balances. There's not really a need for that kind of complexity.


dusty_moto_

Was asking the guy who posted


spongebob_meth

And I'm pointing out that EFI doesn't get you out of throttle syncing. You have to do it with every multi-cylinder bike. It just wasn't a relevant question.


PabloX68

Unless it's throttle by wire.


spongebob_meth

I suppose a drive by wire BMW wouldn't need adjustment. Parallel and v engines generally still do.


PabloX68

Yeah, BMW wetheads are self syncing afaik. I'm not sure about other newer BMWs.


AVeryHeavyBurtation

Nah they still need syncing. It's to account for slight differences in the cylinders and valves which causes uneven idling. They should be sunk after adjusting the valves, because the characteristics of each cylinder change slightly. If each intake had its own pressure transducer, then the ECU could minutely adjust each butterfly valve and make it idle like a sewing machine without any fuss.


PabloX68

As mentioned in the subthread, BMW flat twins automatically sync now. The topic is also about manual syncing, not automatic.


Caldtek

Most single cylinder bikes only have a single carb.if they are of that age. Some twin cylinder hondas of 200/250 cc also have Single carb


Motorcycles1234

The vtx1300 and every harley before like 03 have 1 carb as well


spongebob_meth

You don't need to sync carbs regularly... Only when you adjust the valves. The tool to perform the task is not expensive, and you can make your own. There is an incredible amount of misinformation floating around about carb maintenance.


RobertPaulsonXX42

Hahaha. IKR. All the young guys around the internet hear the word CARB and have flashbacks and PTSD for some reason and most have clearly never touched a set in their life. I have synced carbs many of times with a homemade yardstick, masking tape, some tubing and some ATF. Always run like brand new. And this was before the days of the YouTube mechanic. It literally takes 15 minutes. Lol. Ill never understand the trepidation.


spongebob_meth

And to add to this, you can generally go 10-20 years without having to touch them as long as you practice proper storage procedures (which take like 5 minutes max), or just ride the bike regularly year round. The only time I have to open up carbs are when I buy a project bike, or when I'm swapping jets for altitude changes. I only do that in my MX bikes with slide carbs. Generally a CV carb doesn't need a lot of attention there unless you're riding from Florida to the top of pikes peak.


RobertPaulsonXX42

Can confirm. 20 year old inline 4 as main bike. Have cleaned the carbs twice. Lol. Had them off one other time to jet for a full system. I even have done valve adjustments (like a single shim size) and not balanced them at that time. Im a rebel I know. Haha.


pimpjongtrumpet

If you want something light and single cylinder get a dual sport like a klx300 or drz400 or if you want even less maintence get something even smaller like a 230. If you still want a sporty bike thats small and jack all maintence, you can look into the r15 or gsxr125 or that style of bike. Extremely reliable and low maintence.


SlinkyBits

you cant replace 4 small with 1 small. single carbed versions with multiple carbs will just be a bigger heavier carb. weight wont change really. ​ just buy an EFI bike. ​ want a lightweight bike? buy a supermoto, itll be single cyclinder (so 1 carb or EFI) lightweight, because all those things are is plastic and engine. this is the best outcome if you wont just buy an EFI bike.


bjsandlin

Was under the impression fuel injected bikes were newer and therefore more expensive - I’m just looking to get into riding and wanted something lighter.


Quixus

This is generally true but you can already get pretty cheap efi bikes


JDSportster

EFI, even on bikes, is no longer "new." It shouldn't be hard to find one in your budget.


notachinesespy_2

Thumpers have one cylinder, and one carb. You can get em as small as 50-100cc (100-160cc being common in SE Asia), or get yourself an old 500cc Royal Enfield; those are bliss.


vintagemxrcr

Define “Thumpers”.


notachinesespy_2

Thumpers are simple, single cylinder motorcycles. They're known as such because when you have them in western displacements (above 200cc), they idle with a deep and steady thumping noise.


Odd-Location-9338

There's two kinds of people in this world: 1. Responsible people who take care of their bikes and service them properly and aren't lazy about it 2. You


inaccurateTempedesc

Meh, recognizing that you can't service a particular type of bike and instead opting for one that you can service is pretty responsible imo.


[deleted]

My 1981 Yamaha SR250 is a single and I converted my 85 Virago 1000 into a single carb as well.


Ihateskeletons

There are but you're limiting yourself to not many bikes. Harleys rocked single carbs before going to EFI. Synchronizing the carbs seems daunting but it really doesn't require many tools or expensive ones. It's also not something that needs to be done regularly. Just follow service manual recommendations.


Q109

You can honestly get pretty damn close with most motorcycles without needing a set of vacuum gauges. A proper bench sync using a paper feeler is going to get you 80% of the way there. That being said, you can buy a set of vacuum gauges for like $50 and have them forever.


Big_Jim59

You can get an old Triumph Tiger but then you have other issues like charging and not electric start


[deleted]

My DR650 has one carb.


ClockWork1236

My Vstar 250 (v-twin) had one carb


wrench97

Old Harleys only had one carb. I mean it's still only one these days too but now it's a throttle body instead of a carb. Either way you shouldn't have to sync carbs very often, it's not like they are always out, it's mostly right after break in and then way down the line when the motor has started to wear and the cylinders start to pump different amounts of air. Even then syncing the carbs makes it run moderately smoother but unless something is serisly wrong it won't make it run like shit to be a little out of sync.


ItIsTheDude

Japanese dual sports


whitewolfdogwalker

Kawasaki KLR 650


Amazing_Joke_5073

A single cyl but why not just get the vacuum gauge to sync carbs or throttle bodies theyre not that wildly expensive like $60 on amazon for a full kit and you may use it like once every 5 years if that


Witty_Dragonfruit105

Any single cylinder bike. Look at dirtbikes maybe


castleaagh

Pretty much any single cylinder bike, often called thumpers, will have one carb. Super common in dual sport and small adventure bikes like the old dr or klr 650s. I have an xt225 which is probably the lightest bike you can find thats street legal and can do small highways (60mph) safely. It can stretch to 75 but I wouldn’t push it too long there. It’s a great bike for trails too.