Author Topic: CB350F Carb deterioration  (Read 1274 times)

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Offline Greencb350f

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CB350F Carb deterioration
« on: November 09, 2017, 03:38:32 PM »
Anyone got a good idea on how to save these 2 Carbs? Short of getting new ones. They had water sitting in them for a long time and the aluminum corrosion is petty bad, I think that is the main jet tube. I thought about putting the main jet into a lathe and turning some materal off the back so the jet would fit up in further so the O-ring would fit up into some good aluminum. Any thoughts,  ideas?

Offline Greencb350f

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Re: CB350F Carb deterioration
« Reply #1 on: November 09, 2017, 03:40:14 PM »
Anyone got a good idea on how to save these 2 Carbs? Short of getting new ones. They had water sitting in them for a long time and the aluminum corrosion is petty bad, I think that is the main jet tube. I thought about putting the main jet into a lathe and turning some materal off the back so the jet would fit up in further so the O-ring would fit up into some good aluminum. Any thoughts,  ideas?
here are some pictures

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Offline innovativems

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Re: CB350F Carb deterioration
« Reply #2 on: November 09, 2017, 04:14:14 PM »
There's a guy on her that I think can repair the damaged carbs.  I can't remember his name though.  Other option is to eBay hunting for good replacement carb and swap it out on the rack


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2007 KTM 990 adv
2003 Honda RC51
2000 Yamaha YSR50
1978 Honda Express
1975 Honda CB400f
1974 Honda CB350f
1974 Kawi H2
1974 Honda CB550f
1971 Kawi h1
1973 Kawi h1
1974 gt 550
1974 gt550

Offline danyo

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Re: CB350F Carb deterioration
« Reply #3 on: November 09, 2017, 04:53:08 PM »
Jim French is the guy who can laser weld. I'll be contacting him soon for some precision welding.
JMF Precision Welding Inc.
Dacula, Georgia
You can find him on Fb

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Offline BomberMann650

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Re: CB350F Carb deterioration
« Reply #4 on: November 09, 2017, 06:26:07 PM »
That #3 carb looks awful.  Wouldn’t be surprised if there were more corrosion throughout.

Might just wanna buy some new bodies and rebuild from there.

Offline evinrude7

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Re: CB350F Carb deterioration
« Reply #5 on: November 09, 2017, 06:36:22 PM »
Jim French is the guy who can laser weld. I'll be contacting him soon for some precision welding.
JMF Precision Welding Inc.
Dacula, Georgia
You can find him on Fb

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greencb, +1.  jim french fixed one of mine right up.  fair price and fast.  make sure you send them down with the jets screwed in or a bolt with the same thread. 
cb750 k6 - ugly

Online ekpent

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Re: CB350F Carb deterioration
« Reply #6 on: November 10, 2017, 04:50:52 AM »
 Personally I would be looking for at least that one or maybe two carb bodies as that deterioration looks pretty severe. Too bad its not a cb750 where those parts are much easier to get I'm sure.  That Jim fella has a very good reputation though,maybe he can save them.

Offline Greencb350f

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Re: CB350F Carb deterioration
« Reply #7 on: November 11, 2017, 11:33:57 AM »
Thanks for the help guys! Jim said they look too far gone to lazer weld to.  Most carbs I do find are $300 plus range. Anyone on here have any carbs for sale?

Online ekpent

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Re: CB350F Carb deterioration
« Reply #8 on: November 11, 2017, 01:07:01 PM »
 There is a parts wanted section here on the board.

Offline carnivorous chicken

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Re: CB350F Carb deterioration
« Reply #9 on: November 11, 2017, 01:15:15 PM »
CB350F carbs might go for round $300 rebuilt, but you can find donor sets for likely less than half of that, and you might be able to find someone here who's broken up a set to sell you only what you need.

Ebay has a set for $300 (overpriced), a set for $50 (look to be junk, might get jets or a few parts out of them), and a decent rebuildable set for $118: https://www.ebay.com/itm/1972-Honda-CB350F-Four-H1541-Carburetors-Carbs-Assy-For-Parts/292324157016?epid=1379848996&hash=item440fe0a658:g:c7sAAOSwDkVZ-dSj&vxp=mtr

Online ekpent

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Re: CB350F Carb deterioration
« Reply #10 on: November 11, 2017, 01:29:45 PM »
 Looks like the same carb body on that 118.00 dollar set has the same problem as yours as it looks to be starting to disintegrate also.

Offline carnivorous chicken

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Re: CB350F Carb deterioration
« Reply #11 on: November 11, 2017, 05:13:51 PM »
Looks like the same carb body on that 118.00 dollar set has the same problem as yours as it looks to be starting to disintegrate also.
Damn, looks like you're right, didn't catch that.