Author Topic: Rinse carbs after soak?  (Read 1899 times)

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Offline jakec

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Re: Rinse carbs after soak?
« Reply #50 on: February 11, 2019, 06:10:41 pm »
Here is the one that I am considering. I have not measured yet but I assumed that it would fit. Basket size is 13x12x6" according to the answer provided by someone who bought it. I measured my 400F carb rack and it was about 12x7x6" measured conservatively, if you ignore the throttle cable perch. I think with the 12" width of this unit I should be able to fit the whole thing.

https://www.amazon.com/gp/product/B0140M8H9E/ref=ox_sc_act_title_1?smid=A2RB21RUGRFV4T&psc=1
« Last Edit: February 16, 2019, 11:58:25 am by jakec »
1974 CB550 K0 Chopper
1975 CB400 F0 Stock
1970 CL350 K2 Stock

Offline jakec

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Re: Rinse carbs after soak?
« Reply #51 on: February 25, 2019, 10:06:19 pm »
Here are before & after photos of the carbs after using the ultrasonic cleaner at 35* C, with 4:1 distilled water & simple green HD. Although the simple green HD is "aluminum safe" it still leaves a bit of haziness on some aluminum. You can see that it did bring back a lot of the rainbow color to the carb bodies, though.

People on here were saying 1:1 water and simple green but I went with 4:1 to be safe. Debating if I should put them back in or not. I am currently running the rest of my parts (screws and stuff) through with just water to see how they look.
1974 CB550 K0 Chopper
1975 CB400 F0 Stock
1970 CL350 K2 Stock

Offline sixthwisconsin

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Re: Rinse carbs after soak?
« Reply #52 on: February 26, 2019, 05:19:45 am »
The ultrasonic cleaners have come way down in price since I last looked. I might have to look again at the larger ones. I have been using 2:1, maybe 2.5:1 of Simple Green HD with really good results.
1974 cb550k0 with 1978 motor
https://lensdump.com/a/neo550.A9iak
1974 cb550k0 Custom
1975 cb750f0 Custom Cafe
https://lensdump.com/a/cb836f.A9rrc
http://forums.sohc4.net/index.php?topic=101126.msg1134620#msg1134620
2009 Kawasaki Concours 14 (Sold)

Offline jakec

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Re: Rinse carbs after soak?
« Reply #53 on: February 26, 2019, 09:00:52 am »
Can you share more about your method? I was using only 25% simple green HD and I was still seeing a tiny bit of the frostiness coming up on certain parts. This is with the carb rack all assembled, aside from bowl and dust covers.

I would like to put them through again, but I don't want to go too far.
1974 CB550 K0 Chopper
1975 CB400 F0 Stock
1970 CL350 K2 Stock

Offline sixthwisconsin

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Re: Rinse carbs after soak?
« Reply #54 on: February 26, 2019, 09:20:01 am »
Sonic cleaner then rinse thoroughly with hot water. I have a slop sink in the garage and just run them under hot water for a good long time. Be sure water is running through all passages. I then dry with compressed air blowing out all passages.
1974 cb550k0 with 1978 motor
https://lensdump.com/a/neo550.A9iak
1974 cb550k0 Custom
1975 cb750f0 Custom Cafe
https://lensdump.com/a/cb836f.A9rrc
http://forums.sohc4.net/index.php?topic=101126.msg1134620#msg1134620
2009 Kawasaki Concours 14 (Sold)

Offline jakec

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Re: Rinse carbs after soak?
« Reply #55 on: February 26, 2019, 09:25:54 am »
That is basically what I did, hot water in the sink immediately afterward, and blow dry with heat gun. (Don't have compressed air)

I saw earlier you said you did 8 minutes at a time, and heat on. Do you know how the temp affects the results? My carbs clearly did not come out looking as fresh as the ones you posted. I am wondering if it's primarily the combination of different metals together in the bath that creates the white build up? if you look at the top right corner of my after photo you can see some white stuff on one of the silver parts.

also when you say 2:1 of 2.5:1, do you mean 2 simple green to 1 water?
« Last Edit: February 26, 2019, 09:34:06 am by jakec »
1974 CB550 K0 Chopper
1975 CB400 F0 Stock
1970 CL350 K2 Stock

Offline sixthwisconsin

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Re: Rinse carbs after soak?
« Reply #56 on: February 26, 2019, 09:34:01 am »
8 minutes is the max cycle on the small HF unit I have. I sometimes run it twice and I don't know about the temp affecting it. I know mine is just hot enough that you don't want to put your hand in to pick up something! You have a lot of discoloration on those carbs that will probably not come out with Sonic. I would try a strong mixture but you may need to blast them. I have a HF soda blaster that cleans these up pretty well but the ultimate would be Vapor.
1974 cb550k0 with 1978 motor
https://lensdump.com/a/neo550.A9iak
1974 cb550k0 Custom
1975 cb750f0 Custom Cafe
https://lensdump.com/a/cb836f.A9rrc
http://forums.sohc4.net/index.php?topic=101126.msg1134620#msg1134620
2009 Kawasaki Concours 14 (Sold)

Offline sixthwisconsin

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Re: Rinse carbs after soak?
« Reply #57 on: February 26, 2019, 10:00:40 am »
One simple green to two water.
1974 cb550k0 with 1978 motor
https://lensdump.com/a/neo550.A9iak
1974 cb550k0 Custom
1975 cb750f0 Custom Cafe
https://lensdump.com/a/cb836f.A9rrc
http://forums.sohc4.net/index.php?topic=101126.msg1134620#msg1134620
2009 Kawasaki Concours 14 (Sold)

Offline jakec

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Re: Rinse carbs after soak?
« Reply #58 on: February 26, 2019, 10:25:22 am »
Is there any harm in putting them in longer? I have already had them in for a total of about 30 minutes. And when you say discoloration are you referring to the first pic? I was told that the rainbow color seen in the second pic is normal, desired
1974 CB550 K0 Chopper
1975 CB400 F0 Stock
1970 CL350 K2 Stock

Offline jakec

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Re: Rinse carbs after soak?
« Reply #59 on: February 26, 2019, 10:42:41 am »
Another question would be, if there is no "grime," do I even need a degreaser in the solution at this point? Sorry to ask so many questions i am just worried about hurting my carbs with simple green again.
1974 CB550 K0 Chopper
1975 CB400 F0 Stock
1970 CL350 K2 Stock

Offline sixthwisconsin

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Re: Rinse carbs after soak?
« Reply #60 on: February 26, 2019, 11:03:33 am »
So very early on in this thread I thought it was established that soaking the carbs for 4 days in regular "green" Simple Green had discolored and darkened the metal. There is no amount of Sonic cleaning that will make that go away. The HD Pro version of Simple Green is safe for Aluminum but the damage is done.
1974 cb550k0 with 1978 motor
https://lensdump.com/a/neo550.A9iak
1974 cb550k0 Custom
1975 cb750f0 Custom Cafe
https://lensdump.com/a/cb836f.A9rrc
http://forums.sohc4.net/index.php?topic=101126.msg1134620#msg1134620
2009 Kawasaki Concours 14 (Sold)

Offline jakec

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Re: Rinse carbs after soak?
« Reply #61 on: February 26, 2019, 11:22:17 am »
What happened was I made the mistake with the simple green. What it did was leave a bunch of white deposits which Nils (vapor blasting guy) told me was the result of a chemical reastion with the simple green. Those carbs had bad float posts as well. I contacted a microwelding guy who was suggested to me by Nils, and that guy said the carbs were toast anyways. So I scrapped them. What I have now is a totally different set of carbs that I bought off of craigslist. That's why I'm trying to be careful.
1974 CB550 K0 Chopper
1975 CB400 F0 Stock
1970 CL350 K2 Stock

Offline sixthwisconsin

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Re: Rinse carbs after soak?
« Reply #62 on: February 26, 2019, 11:35:16 am »
Ah, OK...
Hard to keep the details straight. Your new carbs look darkened & discolored to me. That is not from the HD Pro so could be they were previously cleaned in something else? Going to 1 part HD Pro to 2 parts water will not harm the carbs and is what I would do to see if they clean up. Then off to vapor blasting if the results are not what you want.
1974 cb550k0 with 1978 motor
https://lensdump.com/a/neo550.A9iak
1974 cb550k0 Custom
1975 cb750f0 Custom Cafe
https://lensdump.com/a/cb836f.A9rrc
http://forums.sohc4.net/index.php?topic=101126.msg1134620#msg1134620
2009 Kawasaki Concours 14 (Sold)

Offline jakec

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Re: Rinse carbs after soak?
« Reply #63 on: February 26, 2019, 09:52:18 pm »
Thanks for all the responses so far. I have two photos that show the "after." Still haven't put the carbs back in.

responding to the Responding to the point you made in the PM you sent, I agree in the "before" photo the rack shows that the carbs are all dulled and one is a little darker than the others. You can see in these after photos though that they're mostly gone back to a hazy blue color. The darker one is still a bit darker. I think what was scaring me from putting them in any longer is I don't know if I'm distinguishing good haze from bad haze. I'm not too worried if they don't come out good as new.. I just don't want to ruin them.

1974 CB550 K0 Chopper
1975 CB400 F0 Stock
1970 CL350 K2 Stock

Offline bamacb

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Re: Rinse carbs after soak?
« Reply #64 on: February 27, 2019, 01:00:29 am »
That is about what to expect with the sonic cleaner. I use just enough sg to turn the water green , 45 - 50c on temp and 1 hour clean time checking every 15 minutes. I just finished up 3 sets of really nasty 750 carbs that every thing was stuck. Overnight chem dip , sonic clean , soda blast and final 30 minute sonic with straight hot water. Of course they were completely apart. Soda blast was the ticket to really get them looking good. If you just use the sonic cleaner a light spray of wd40 after will keep any of the white crap from forming

 

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