Author Topic: Question about Honda CB350 twin  (Read 2691 times)

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Offline Stev-o

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Question about Honda CB350 twin
« on: April 11, 2017, 02:57:43 pm »
My niece is looking to buy a CB350, how cool is that?!  She sent me a pic, and the original exhaust has considerable blueing near the heads.
I know the bluing is the result of heat, but is that common on the twins? [I dont know the 350's]
Could be wrong jetting or plugs, what else would cause this?

The bike looks all original with 24K miles and in exceptional shape, the bluing has me a little concerned.

Thanks
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline seanbarney41

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Re: Question about Honda CB350 twin
« Reply #1 on: April 11, 2017, 03:39:10 pm »
If they are original pipes, they should not be blued...double wall tubeing just like on our fours.
If it works good, it looks good...

Offline grcamna2

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Re: Question about Honda CB350 twin
« Reply #2 on: April 11, 2017, 04:07:46 pm »
The first thing I would imagine could be they were running it w/ very clogged carbs.(would run way too lean)and it got hot plus extended idling.I hope the present owner would let you do a compression test(or look in the spark plug holes w/ one of those special cameras)to verify if the top-end is still 'in spec'.
75' CB400F/'bunch o' parts' & 81' CB125S modded to a 'CB200S'
  I love the small ones too !
Do your BEST...nobody can take that away from you.

Offline Stev-o

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Re: Question about Honda CB350 twin
« Reply #3 on: April 11, 2017, 07:00:01 pm »
If they are original pipes, they should not be blued...double wall tubeing just like on our fours.

Seller states they are original pipes, I question that since they are blued.  Thx
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline 754

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Re: Question about Honda CB350 twin
« Reply #4 on: April 11, 2017, 07:07:20 pm »
If it ran lean once 12 years ago and was immediately fixed, what color will the pipes be ?
My exoerience on the 350 twinm had to set the idle mixtute screws every two weeks. They vibrate a lot.. Bur a fun bike.. Dont let her ride a four dirst..she will just think all bikes are tingly..
Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline Stev-o

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Re: Question about Honda CB350 twin
« Reply #5 on: April 15, 2017, 08:05:55 am »
We went and looked at the bike yesterday, the cond was very disappointing.
I was expecting it to be a lot nicer than it was, the seller was just a flipper trying to make a buck [not that there is any thing wrong with that!]

But it had crappy old tires, black elec tape wrapped around wiring, tweaked handle bars and a tank sealed with an unknown product.  It did start up and run good, checked the plug for leanness and it looked normal.

https://austin.craigslist.org/mcy/6081879436.html

The seller was a bad salesman and I didnt like the bike so I called a buddy of mine that also had a CB350.  I toyed with him a couple months ago about selling it [long story]. He now said he was ready to sell and we could come look at it immediately. We were there within 30 min, test rode it and she bought it!  It's in very good cond, 3500 miles, runs great, only issues is it needs a battery and the side covers paint is not a perfect match.  She got it for $1900...


'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline CycleRanger

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Re: Question about Honda CB350 twin
« Reply #6 on: April 15, 2017, 08:26:54 am »
That's a good price for around these parts!
Do you have a copy of the Honda Shop Manual or Parts List for your bike? Get one here:
https://www.honda4fun.com/materiale/documentazione-tecnica
CB750K5        '79 XL250s     CL350K3
CB750K3        '76 XS650      '76 CJ360T

Offline Stev-o

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Re: Question about Honda CB350 twin
« Reply #7 on: April 15, 2017, 08:41:53 am »
That's a good price for around these parts!

I thought so as well.  But the 350 twin is a dog, too slow for me! But perfect for her as a beginner...
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline 754

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Re: Question about Honda CB350 twin
« Reply #8 on: April 15, 2017, 09:05:36 am »
Good looking 350 .
Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline Stev-o

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Re: Question about Honda CB350 twin
« Reply #9 on: April 15, 2017, 09:19:26 am »
Good looking 350 .

I thought so too.  She was concerned the color was a little too masculine! Typical girl...I advised her you shouldnt pick a good vintage bike by the color...
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline ekpent

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Re: Question about Honda CB350 twin
« Reply #10 on: April 15, 2017, 12:12:07 pm »
 Larry MoMo will be happy to put one of his pink paint jobs on it like he did that 400F.  ;)  Has your niece had any riding experience yet Steve either in the dirt or on the road ? Are her parents OK with it or is Uncle Steve going to be in big trouble ??

Offline CBJoe

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Re: Question about Honda CB350 twin
« Reply #11 on: April 15, 2017, 01:44:48 pm »
Larry MoMo will be happy to put one of his pink paint jobs on it like he did that 400F.  ;)  Has your niece had any riding experience yet Steve either in the dirt or on the road ? Are her parents OK with it or is Uncle Steve going to be in big trouble ??

http://www.ebay.com/itm/NOS-MCM-Honda-CB350-CB-350-Engine-Crash-Bar-Engine-Guard-NEW-/370935923563

may be a good investment :) 
'07 Bonneville Black
'15 Moto Guzzi California 1400
CB750K2 Hot Rod Revival http://forums.sohc4.net/index.php/topic,171693.0.html
'65 CB77
'66 CM91 (C90'ish)

Offline seanbarney41

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Re: Question about Honda CB350 twin
« Reply #12 on: April 15, 2017, 03:05:42 pm »
Good looking 350 .

I thought so too.  She was concerned the color was a little too masculine! Typical girl...I advised her you shouldnt pick a good vintage bike by the color...
really? That's often how I do it.
If it works good, it looks good...

Offline ekpent

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Re: Question about Honda CB350 twin
« Reply #13 on: April 15, 2017, 06:26:48 pm »
 I'm not just looking but I NEED a couple certain colors of a couple different years to finish out the 750 collection   :o Still don't own a red K1 for instance dammit'

Offline Stev-o

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Re: Question about Honda CB350 twin
« Reply #14 on: April 15, 2017, 06:38:01 pm »
Has your niece had any riding experience yet Steve either in the dirt or on the road ? Are her parents OK with it or is Uncle Steve going to be in big trouble ??

I think she's ridden mopeds when she was younger, my brother had a Honda Passport we used as a pit bike at the track. 


I'm not just looking but I NEED a couple certain colors of a couple different years to finish out the 750 collection   :o Still don't own a red K1 for instance dammit'

My next project in the line up is a Ruby Red K1!   Already have the body set....
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline grcamna2

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Re: Question about Honda CB350 twin
« Reply #15 on: April 15, 2017, 08:04:19 pm »
Stev-o,
That 350K4 looks good,low miles too;was it garage kept ?
75' CB400F/'bunch o' parts' & 81' CB125S modded to a 'CB200S'
  I love the small ones too !
Do your BEST...nobody can take that away from you.

Offline Stev-o

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Re: Question about Honda CB350 twin
« Reply #16 on: April 15, 2017, 08:11:18 pm »
Stev-o,
That 350K4 looks good,low miles too;was it garage kept ?

Long story but it did sit outside for at least a couple months as it was abandoned.   But it cleaned up real nice and was garage kept the last few months. 

She sent me a text earlier - she rode it today and had "lots of fun".   She'll be taking a safety course next week.
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline iFart

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Re: Question about Honda CB350 twin
« Reply #17 on: April 23, 2017, 08:21:56 am »
Are you going to switch the front wheel to a disc brake like the '73 G model?

Offline 754

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Re: Question about Honda CB350 twin
« Reply #18 on: April 23, 2017, 10:53:18 am »
It. Was abandoned and they pulled 1900 out of it..not bad.
Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way