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Which carbs are these? 1979 KZ1000 LTD 08 Dec 2021 12:43 #858830

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I use simple green pro HD. It’s aluminum friendly. I dilute it 3 to 1 with water. Spray them down good let them soak for a few and brush them with a nice course nylon brush. That will loosen and remove a lot of the road grime, oil and dirt. I do not have access to an ultrasonic cleaner. And I think the jury is out on the effectiveness of those anyways. I’m sure that will start a debate. They use Barrymen’s carb dip and let them soak usually overnight. Make sure all the passageways are blown clear with brake cleaner. I’ve had good luck with CLR for short soaks to remove any corrosion.



So you soak them in the carb dip and THEN use the carb cleaner?    Probably doesn't hurt to follow up with compressed air, huh?   I think I'm going to use my dawn method for initial cleaning.....I just use that stuff for everything.   Best stuff to wash a dog with too, by the way.  Kills fleas on contact, gentle on their skin, etc.   I digress....
 
1979 KZ1000 LTD, 1982 KZ1000 LTD, 1990 Honda CBR1000F

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Which carbs are these? 1979 KZ1000 LTD 08 Dec 2021 12:46 #858831

  • Warren3200gt
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Dismantle them without mixing parts from one carb with another and ultrasonic clean them. Then airline All the vents and passages to ensure they are 100%.
Take your time and double check vents and passages etc are clean and clear. Theres nothing worse than putting them back on the bike and still having issues and having to do them again. 
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Which carbs are these? 1979 KZ1000 LTD 08 Dec 2021 12:50 #858832

  • Mikaw
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As warren says keep all the parts with their bodies. Disposable food storage tubs work great. 
1976 KZ 900 A4 kzrider.com/forum/11-projects/613548-1976-kz-900-a4
1976 KZ 900 B1 LTD
1978 KZ 1000 B2 LTD
1980 KZ 750 E1
Kowledge Speaks, But Wisdom Listens.
Jimi Hendrix.
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Which carbs are these? 1979 KZ1000 LTD 08 Dec 2021 17:19 #858843

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Ugly....haha....

 
1979 KZ1000 LTD, 1982 KZ1000 LTD, 1990 Honda CBR1000F
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Which carbs are these? 1979 KZ1000 LTD 08 Dec 2021 17:55 #858844

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That isn’t that bad. Just gas that’s all varnished up… white corrosion is bad. If the other 3 are similar you’ll be ok. 

In this bore is a spring retention clip, a cylinder shaped weight and a ball bearing, remove them carefully and don’t lose them. See green circle 
1976 KZ 900 A4 kzrider.com/forum/11-projects/613548-1976-kz-900-a4
1976 KZ 900 B1 LTD
1978 KZ 1000 B2 LTD
1980 KZ 750 E1
Kowledge Speaks, But Wisdom Listens.
Jimi Hendrix.
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Which carbs are these? 1979 KZ1000 LTD 08 Dec 2021 18:33 #858846

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Thanks for that!  The clip and pin came right out, but had to spray some carb cleaner in there and let it sit for a while to get the ball out.  I have also ordered the Berryman Chem dip carb cleaner...thanks.

Warner
1979 KZ1000 LTD, 1982 KZ1000 LTD, 1990 Honda CBR1000F

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Which carbs are these? 1979 KZ1000 LTD 09 Dec 2021 04:57 #858852

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Carb dip is very effective for cleaning off the varnish.  Wash off with water and blow dry.  I use carb cleaner in a spray can or brake cleaner afterwards, shot into all the internal passages to make sure they are open; shoot in one spot and make sure it flows out where it should.  The choke passages in the float bowl often block up for example so make sure they are open.  And needless to say spray out the pilot circuit passages too.  
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Which carbs are these? 1979 KZ1000 LTD 09 Dec 2021 06:12 #858857

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That isn’t that bad. Just gas that’s all varnished up… white corrosion is bad. If the other 3 are similar you’ll be ok. 

In this bore is a spring retention clip, a cylinder shaped weight and a ball bearing, remove them carefully and don’t lose them. See green circle 


What would the white corrosion indicate?

EDIT:   Found this on white corrosion:
            The "white powder" you see in poorly maintained carbs is the result of water induced corrosion, the reason it's white is because of the high zinc content of the typical carb casting.
              It is impossible to remove completely, I have even tried high powered ultrasonic with little success. If you manage to remove it you will find pits in the casting which in my opinion                scraps the carb.   If you have minor corrosion deposits try CLR or other acid based cleaner, it works well for light residue.


          Warner
1979 KZ1000 LTD, 1982 KZ1000 LTD, 1990 Honda CBR1000F

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Which carbs are these? 1979 KZ1000 LTD 09 Dec 2021 07:26 #858858

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See red arrow. This is a very critical ORing. The only place I have been able to find the correct replacement is Redline Cycle in Illinois. Jets-r-us might be another source as long as it OEM Mikuni. The ORings in the Keyster kits are correct also but they are about $38 each kit,
Kind of expenses to buy just to get the ORing. 



 
1976 KZ 900 A4 kzrider.com/forum/11-projects/613548-1976-kz-900-a4
1976 KZ 900 B1 LTD
1978 KZ 1000 B2 LTD
1980 KZ 750 E1
Kowledge Speaks, But Wisdom Listens.
Jimi Hendrix.
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Which carbs are these? 1979 KZ1000 LTD 09 Dec 2021 10:51 #858868

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See red arrow. This is a very critical ORing. The only place I have been able to find the correct replacement is Redline Cycle in Illinois. Jets-r-us might be another source as long as it OEM Mikuni. The ORings in the Keyster kits are correct also but they are about $38 each kit,
Kind of expenses to buy just to get the ORing. 



 


Well, I live in Illinois so that's a good thing (from the O-ring perspective, anyway!  Ha!).   Is that something that should be replaced by default?  

                   Thanks for these tips!  Super helpful!

                             Warner
1979 KZ1000 LTD, 1982 KZ1000 LTD, 1990 Honda CBR1000F

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Which carbs are these? 1979 KZ1000 LTD 09 Dec 2021 11:58 #858871

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Replacing all ORings and gaskets are default to a proper rebuild. 
1976 KZ 900 A4 kzrider.com/forum/11-projects/613548-1976-kz-900-a4
1976 KZ 900 B1 LTD
1978 KZ 1000 B2 LTD
1980 KZ 750 E1
Kowledge Speaks, But Wisdom Listens.
Jimi Hendrix.
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Which carbs are these? 1979 KZ1000 LTD 09 Dec 2021 16:25 #858882

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Here is a thread discussing a restoration I did on a set of those carbs...

www.kzrider.com/forum/3-carburetor/61501...s-b-vm-carbs?start=0
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