Honda CB350 / 4 ultrasonic carburettor cleaning

One of our customers kindly sent some photographs of his Honda CB350 / 4 carburettors before and after cleaning with an ultrasonic cleaner.


One of our customers kindly emailed some photographs of his Honda CB350 / 4 carburettors before and after cleaning with an ultrasonic cleaner. The text below is from his email.

I Just used my 6 Ltr ultrasonic bath for the first time on some old carbs. The carbs are from a 1972 Honda CB350/4 and they were all quite badly gummed up. I used the carb cleaning solution diluted as instructed (10:1) and heated the water to 65 centigrade. I cleaned them (the bike has 4) one at a time for just 20 minutes each. Please find attached 5 before and 5 after pictures of the dirtiest carburettor.  Regards, Peter

The model Peter bought was a 6 Ltr ultrasonic cleaner with a simple dial adjustment for the time and temperature control. The carburettor cleaning fluid was included free.

 

 

image of an 6Ltr analogue ultrasonic cleaner
6 Ltr ultrasonic tank that Peter used for cleaning his carbs

 

image of the banner from Best Ultrasonic Cleaners.co.uk


 

Carburettor cleaning fluid – how to mix it in the correct ratio.

Ultrasonic Carburettor cleaning fluid – how to mix it in the correct ratio using a coffee mug


OK, it might sound a little simple to suggest how to calculate the correct amount of ultrasonic carburettor cleaning fluid to mix with water, but it’s an important aspect of the ultrasonic cleaning process and worth a few lines explaining it.

The cleaning fluid is mixed in a ratio of 10:1. That means for every ten parts of water, you need to add 1 part of fluid. Applying that theory into the real world we need to know how many glugs of fluid to add to an ultrasonic tank and that of course will vary with the tank size.

a coffee mug with the following words printed on it "leave me alone, I'm working on my motorbike today"

Let’s look at a 3 litre size of ultrasonic cleaner as an example

3 litre = 3,000ml. Mixing the fluid at 10:1 means that you need 300ml of cleaning fluid. And the easiest way to measure 300ml is you use a normal coffee or tea mug. A coffee mug holds 300ml. Perfect! Add one full mug of carburettor cleaning fluid to your 3Ltr ultrasonic cleaner and then fill the tank with water up to the fill line which is about 20mm from the top of the tank. Done. Simple as that.

NOTE: Don’t fill the tank to the very top because when you put your carburettor in the fluid, the displacement (over-spill) will run all over your worktop.

6 litre ultrasonic tank

6 litre = 6,000ml. Mixing the fluid at 10:1 means that you need 600ml of cleaning fluid. A coffee mug holds 300ml. Add 2 x mug of carburettor cleaning fluid to your 6Ltr ultrasonic cleaner and then fill the tank with water upto the fill line which is about 20mm from the top of the tank.

9 litre ultrasonic tank

9 litre = 9,000ml. Mixing the fluid at 10:1 means that you need 900ml of cleaning fluid. A coffee mug holds 300ml. Add 3 x mug of carburettor cleaning fluid to your 9Ltr ultrasonic cleaner and then fill the tank with water upto the fill line which is about 20mm from the top of the tank.

13 litre ultrasonic tank

13 litre = 13,000ml. Mixing the fluid at 10:1 means that you need 1300ml of cleaning fluid. A coffee mug holds 300ml. Add 4.5 x mug of carburettor cleaning fluid to your 13Ltr ultrasonic cleaner and then fill the tank with water upto the fill line which is about 20mm from the top of the tank.

20 litre ultrasonic tank

20 litre = 20,000ml. Mixing the fluid at 10:1 means that you need 2000ml of cleaning fluid. A coffee mug holds 300ml. Add 6.5 x mug of carburettor cleaning fluid to your 20Ltr ultrasonic cleaner and then fill the tank with water upto the fill line which is about 20mm from the top of the tank.

Its not vital that the mix is accurate and if you have a heavily soiled carb, you might want to add an extra half a mug of cleaning fluid to a smaller ultrasonic cleaner (3 & 6 litre) and another couple of mugs full to a 20 litre machine.

And finally, the obligatory health and safety note. As much as I love the fluids that we sell, I wouldn’t want to digest it. If you intend to drink from the coffee mug used for  measuring, wash it first.  🙂

 


email icon for contacting best ultrasonic cleaners

ask a question about this article

Image of Best Ultrasonic Cleaner website logo


Carburettor Cleaning fluid

Ultrasonic carburettor cleaning fluid in 1 Ltr and 5Ltr bottles.


Our carburettor cleaning fluid has been formulated specifically for use with an ultrasonic cleaner, for cleaning carburettors, valves, fuel injectors, engine parts etc. It safely and quickly removes contaminants including general soiling and dulling, oxidation, carbon, petrol residue and grease etc. It works very well on alloys and aluminium castings, not only removing the physical dirt, but also it visually brightens dulling that occurs over time. Obviously it can’t make a component look like it did when it first left the manufacturer’s factory, but results are very impressive. The cleaning process won’t damage, corrode or darken metal components. Safe on brass, aluminium and other sensitive metals. It is also safe with O rings. Mix the concentrate 1 part solution to 10 parts water. (1 Ltr bottle makes 10 Ltr of working solution).

The fluid can be used many times until it looks dirty. There’s no specific rule about when to change the fluid, but the idea of an ultrasonic cleaner is for deep and thorough cleaning. If your fluid looks like pea soup, it’s time to change it!

Directions:

The carburettor cleaning fluid is a concentrate and is added to water at a ratio of  10: (1 parts cleaning fluid to 10 part water). For heavily soiled components, this can be strengthened to 7:1. The working temperature of the ultrasonic cleaner should be set between 50 – 80 degrees centigrade. After cleaning rinse with clean water and leave to dry. Always test before use on new applications.

Visit our website for more information: Best Ultrasonic Cleaners fluids


1 litre bottle of ultrasonic carburettor cleaner

1 Ltr carburettor cleaning fluid

Free UK delivery (sorry, we can only ship fluids to the UK).

£13.99

5 Ltr ultrasonic carburettor cleaner

5 Ltr carburettor cleaning fluid

Free UK delivery (sorry, we can only ship fluids to the UK)

£29.99


email icon for contacting best ultrasonic cleaners

ask a question about this article

Image of Best Ultrasonic Cleaner website logo


 

Cleaning a bank of 4 carbs off a Yamaha FZR600

Ultrasonic cleaning of carburettors off a Yamaha FZR600 motorcycle.


A set of photos taken by a customer after before, during and after cleaning in an ultrasonic cleaner. The bike is a Yamaha FZR600.The cleaning time was about 20 minutes.


email icon for contacting best ultrasonic cleaners

ask a question about this article

best ultrasonic cleaners logo 3


A bikers guide to ultrasonic carburettor cleaning – how to pick an Ultrasonic Motorbike Carb cleaner?

A bikers guide how to clean a carburettor with an ultrasonic cleaner. Which size and model to buy?


We all know the old saying that a grain of sand in a carburettor can stop the most powerful of motorbike engines. And it’s true. In the World of carburettors, cleanliness is king.

Having owned motorcycles on and off for more years than I like to admit and having rebuilt a few engines, from old BSA Bantam (D2), Norton Commando 750 (fastback) and a Ducati (250 Desmo), back in the day I would soak the carburettor in a bucket of degreasing solution for an hour or two, then rinse with water and blow it off with an air gun. Simple, but not really very efficient.

carburettors before and after cleaning

Technology has advanced over the last few decades and when it comes to cleaning a carburettor and engine components, the accepted best practice is to use an ultrasonic Cleaner. Without getting too bogged down in the technical detail, an Ultrasonic Cleaner has a component called a transducer that generates sound waves, that in turn produce microscopic bubbles that very effectively dislodge dirt, grime and petrol residue from the intricate parts of a carburettor that would otherwise be almost impossible to get to.

mercedes world constructors champions
We supply ultrasonic cleaners to the best of the best

Using an Ultrasonic Cleaner requires no special knowledge or skill. All that is needed is water and a specific cleaning fluid to put into the tank. The unit is then plugged into a domestic power socket and the built-in heater raises the temperature of the water & cleaning solution mixture to around 60 degrees centigrade. Place your dismantled carb in the tank, after removing float bowls and jets, and turn on the ultrasonics. Normally around 15 – 20 minutes is a sufficient cleaning time. Remove the carburettor, rinse and leave to dry. Not only will the carb be deep cleaned internally, but the alloy casting will look bright and clean. NOTE: Some castings were dull when new and obviously the ultrasonic cleaning process can never make your old carb look better than the day it left the factory.

Which Ultrasonic Cleaner should I buy?

I have a mantra about the selection process. Obviously the price is a main consideration, but above that – SIZE MATTERS. I can’t say that enough, so I will repeat – SIZE MATTERS. Several customers make a purchase by guessing or estimating their carb will fit into a particular machine. And when the cleaner arrives, they realise that its a bit too small and phone me to exchange it for a larger ultrasonic tank. That isn’t a problem, but it costs you the customer money to post it back to us and it’s a bit of faffing around. The golden rule: measure twice, purchase once.

Ultrasonic cleaner with a bank of 4 motorbike carburettors

It’s far better to try and get it right first time. And the best way is (if you can) to actually measure the overall dimensions of your carburettor. This isn’t always possible if the bank of carbs are still fastened to the bike and it can still end up being a “guesstimate”. Also, you will be removing some of the carb parts such as float bowls, slides, jets etc and this will reduce the overall required tank size. I think that if you can afford it, get something a bit bigger than you estimate. If you try to cram a small tank full of parts, the cleaning will not be as efficient as putting them into a larger tank. As the saying goes, “what will hold more will hold less”. Do you get the idea?

 

 

Degassing – what’s that about?

Degassing is available on some models and is an addition function which, after a change a cleaning solution, quickly removes air from the liquid that in turn, makes the cleaning process more effective. This is especially useful when cleaning carburettors. Additionally, the cleaning power can be increased or reduced depending on the items being cleaned which means that delicate products can be cleaned gently. It does however, add a bit more money to the price.

TIP – HOW TO CLEAN SMALL PARTS

If you look through all the models we sell, the choice can be a little confusing. To help sort the wheat from the chaff, so to speak, shown below are the most commonly purchased Ultrasonic Cleaners for cleaning motorbike carbs. The 3 Ltr tanks are good for individual carburettors. If you need to clean a bank of 3 or 4 without splitting them, you’ll need a 20 Ltr as a minimum.

What exactly is ultrasonic cleaning? – MORE INFORMATION

3 Ltr Ultrasonic Cleaner with dial adjustment – (suitable for individual small carbs)

  • Tank Size (internal): 240 x 137 x 100mm
  • Wire Basket – included (L: 220mm x W: 130mm x H: 75mm)

3 ltr ultrasonic cleaner with dial adjustment

3Ltr Ultrasonic Cleaner with digital adjustment – (suitable for individual small carbs)

  • Tank Size (internal): 240 x 137 x 100mm
  • Wire Basket – included (L: 220mm x W: 130mm x H: 75mm)

3 ltr ultrasonic cleaner with digital adjustment

9 Ltr Ultrasonic Cleaner dial adjustment – suitable for medium size carbs

  • Tank Size (internal): 300 x 240 x 150mm
  • Wire Basket – included (L: 280mm x W: 230mm x H: 115mm)

9 ltr ultrasonic cleaner with dial adjustment

20 Ltr Ultrasonic Cleaner – suitable for large carburettors and a bank of 4 or 6

  • Tank Size (internal): 495 x 295 x 195mm
  • Wire Basket – (included) L: 465mm x W: 270mm x H: 125mm

20 ltr ultrasonic cleaner with digital adjustment

And finally, don’t forget the all important cleaning solution because an ultrasonic cleaner by itself won’t breakdown the petrol and grease. Additionally, when you’ve cleaned your carb, you want it to look the part and the use of a cleaning solution will give it the cosmetic “wow” factor. Cleaning fluids can be found here.


email icon for contacting best ultrasonic cleaners

ask a question about this article

best ultrasonic cleaners logo 3


 

Free cleaning fluid, delivery and basket with every professional ultrasonic cleaner

When you buy any professional ultrasonic cleaner from us, you will get a free 1Ltr of cleaning solution.


 

Free cleaning fluid, UK delivery and basket with every professional ultrasonic cleaner

We have an amazing offer. Our prices are all inclusive. Buy any “professional ultrasonic cleaner” and there are no hidden extras. What you see is what you pay.

FREE delivery

FREE stainless steel basket

FREE 1 litre cleaning fluid

You select a free 1 litre bottle from our range of specialist “Ultrasonic cleaning solutions” to use with your new machine.

stack of GT sonic ultrasonic cleaners

 

Simply add your chosen Ultrasonic Cleaner to the shopping basket then add any 1 ltr bottle of ultrasonic cleaning solution and the cost will be deducted at the checkout. Easy peazy!

We have cleaning solutions for cleaning jewellery, carburettors, flux removal, oxidisation removal and another for sensitive metals. It’s your choice and its FREE.

1 ltr bottle of carburettor cleaner1 Ltr bottle of flux remover fluid 1 ltr bottle of flux remover fluid

 

 

 


 

Best Ultrasonic Cleaners logo