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Author Topic: 1972 honda 350Four  (Read 1214 times)

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Offline KaosRN

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1972 honda 350Four
« on: July 28, 2018, 02:18:58 PM »
Hey all I'm from hattiesburg MS. I just got my hands on a 1972 honda 350 Four. The electrical start wasnt working and the kick start shaft was broken on the inside of the crank case and JB welded shut. I bought a new shaft and kick bar and she fired right up. Shes not firing on all 4 cylinders. I started taking the carbs apart today. On of the bowl springs is broke ( other piece wasnt in the bowl) and the rubber seal is missing on the main jet set... so far. Still have a while to go getting these carbs apart and rebuilding them. Any advice and help is welcome!!!

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Offline KaosRN

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Re: 1972 honda 350Four
« Reply #1 on: July 28, 2018, 02:26:10 PM »
Heres pictures.

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Offline MD

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Re: 1972 honda 350Four
« Reply #2 on: July 28, 2018, 03:17:40 PM »
Hello from Minnesota,

Thanks for posting the pictures.  The spring holds a jet in place.

-MD
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1975 CB550F Super Sport;  Lake Superior Circle 1000, 45-90 Saddle 1000, All in Yooper 1000 and SS 2000 in 48 hrs:  1985 GL1200A, MN in State SS1K

Offline KaosRN

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Re: 1972 honda 350Four
« Reply #3 on: July 28, 2018, 03:19:23 PM »
here is a link to her running.

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Offline KaosRN

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Re: 1972 honda 350Four
« Reply #4 on: July 28, 2018, 03:22:34 PM »
Quote from: MD on July 28, 2018, 03:17:40 PM
Hello from Minnesota,

Thanks for posting the pictures.  The spring holds a jet in place.

-MD
Awesome thanks MD. Do I need I need a new spring? The spring I posted is the only one I can find.  I've been told when rebuilding carbs just replace the rubbers and keep old jets.

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Offline kslrr

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Re: 1972 honda 350Four
« Reply #5 on: July 28, 2018, 06:55:24 PM »
She's a little rough looking but sounds like she's in good hands now.  The 350F is a fun bike.
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Now  1972 CB350FX (experimental v2.0)
        1981 CB650c Custom with '79 engine (wifes)
        1981 CB650 engine
        2004 HD XL883C Custom
        1977 Yamaha XS750D (in progress)
Then 1972 CL175
        1964 Yamaha YGS-1T
No ride is a Bad ride

Offline KaosRN

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Re: 1972 honda 350Four
« Reply #6 on: July 28, 2018, 08:39:10 PM »
Yes she is very rough looking. This is my vision. Slow and steady.

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Offline MD

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Re: 1972 honda 350Four
« Reply #7 on: July 29, 2018, 06:58:44 AM »
Quote from: KaosRN on July 28, 2018, 03:22:34 PM
Quote from: MD on July 28, 2018, 03:17:40 PM
Hello from Minnesota,

Thanks for posting the pictures.  The spring holds a jet in place.

-MD
Awesome thanks MD. Do I need I need a new spring? The spring I posted is the only one I can find.  I've been told when rebuilding carbs just replace the rubbers and keep old jets.

Sent from my SM-G955U using Tapatalk

Yes, you will need a new spring.  You don't want a jet dropping into the bowl. 

-MD
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1975 CB550F Super Sport;  Lake Superior Circle 1000, 45-90 Saddle 1000, All in Yooper 1000 and SS 2000 in 48 hrs:  1985 GL1200A, MN in State SS1K

Offline Robbo

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Re: 1972 honda 350Four
« Reply #8 on: July 29, 2018, 07:41:55 AM »
Wondering what battery is in the bike?  Sticks out in the pic because it’s sitting on its side.

Interested to see your transformation.

These are fun bikes.  I’ve never had any real issues with mine.


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1973 CB350 Four, 1975 CB550K

Offline KaosRN

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Re: 1972 honda 350Four
« Reply #9 on: July 29, 2018, 11:16:48 AM »
Quote from: Robbo on July 29, 2018, 07:41:55 AM
Wondering what battery is in the bike?  Sticks out in the pic because it’s sitting on its side.

Interested to see your transformation.

These are fun bikes.  I’ve never had any real issues with mine.


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This is the battery. It came with the bike.  If anyone know where I can get a nice R side cover it would greatly appreciate it... the one I hear is broke pretty good.

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Offline KaosRN

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Re: 1972 honda 350Four
« Reply #10 on: July 29, 2018, 07:51:32 PM »
Ok so I'm taking these carbs apart slowly and taking pictures as I go. Has anyone else on here stripped down the carbs before. I have some pieces that are broke that I cant find on Ebay. And a piece I know where it came from but the other 2 throttle valves didn't have it.

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Offline KaosRN

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Re: 1972 honda 350Four
« Reply #11 on: July 29, 2018, 08:04:58 PM »
So this is the piece that is missing on 3 out of the 4 arm set links.

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