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Author Topic: CB 360 no label parts build!  (Read 3315 times)

Offline crazypj

  • Posts: 13155
  • Split personality, I fake being smart
Re: CB 360 no label parts build!
« Reply #40 on: Jun 05, 2018, 21:18:18 »
It's possible but depends how much you want to spend on them (time and money) You'll probably have to put up with some flat spots. I haven't spent enough time on VM's in ther last 15~20 yrs to remember what to do. I made new emulsion tubes for the set on my XS 650.  The ones on that are using round head Mikuni jets (as I have a lot of them in different sizes) rather than the long hex head you have in stock VM's. Unfortunately I don't have capabilities to make emulsion tubes at present. I've just finished modifying a set of CB350 carbs for someone who couldn't get VM's to work well enough for his customer to be able to ride (spent probably 6 months or more 'tinkering' with them) I think customer is expecting a 45+ yr old modified motorcycle to run like a new fuel injected model? It ain't ever going to happen but modified stock will 'cure' most of the hesitation and flat spots. I've been modifying stock 360 carbs for a long time so know what to do to make them work with K&N's  Imay eventually do the same for VM 30's as I swapped a set of modified stock for a pair several years ago  (they are still 'on the shelf' untouched though  ;D )
'you can take my word for it or argue until you find out I'm right'
Best thing I ever overheard
"yep, PJ's my boss, he taught me everything I know, just didn't teach me everything he knows"
Brian Morgan, 1982

CB360's,  http://www.dotheton.com/forum/index.php?topic=11736.0
XS650,  http://www.dotheton.com/forum/index.php?topic=11922.0

Offline Stayrad

  • Posts: 57
Re: CB 360 no label parts build!
« Reply #41 on: Jun 06, 2018, 00:37:41 »
It's possible but depends how much you want to spend on them (time and money) You'll probably have to put up with some flat spots. I haven't spent enough time on VM's in ther last 15~20 yrs to remember what to do. I made new emulsion tubes for the set on my XS 650.  The ones on that are using round head Mikuni jets (as I have a lot of them in different sizes) rather than the long hex head you have in stock VM's. Unfortunately I don't have capabilities to make emulsion tubes at present. I've just finished modifying a set of CB350 carbs for someone who couldn't get VM's to work well enough for his customer to be able to ride (spent probably 6 months or more 'tinkering' with them) I think customer is expecting a 45+ yr old modified motorcycle to run like a new fuel injected model? It ain't ever going to happen but modified stock will 'cure' most of the hesitation and flat spots. I've been modifying stock 360 carbs for a long time so know what to do to make them work with K&N's  Imay eventually do the same for VM 30's as I swapped a set of modified stock for a pair several years ago  (they are still 'on the shelf' untouched though  ;D )
That is so impressive. Carbs are so frustrating and sometimes...rarely rewarding to me.   I have a buddy with a set of stock carbs I might try out on it and see if they work better. Is there a place to send carbs for a hardcore deep clean? If I went to stock Iíd like to have them gone over by someone who knows more than me. I really want a bike I can take down the coast. So dependability is priority to me. I know itís an old bike but I believe it can be done.


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Offline MiniatureNinja

  • Posts: 454
Re: CB 360 no label parts build!
« Reply #42 on: Jun 06, 2018, 02:23:58 »
That is so impressive. Carbs are so frustrating and sometimes...rarely rewarding to me.   I have a buddy with a set of stock carbs I might try out on it and see if they work better. Is there a place to send carbs for a hardcore deep clean? If I went to stock Iíd like to have them gone over by someone who knows more than me. I really want a bike I can take down the coast. So dependability is priority to me. I know itís an old bike but I believe it can be done.


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if dependability is key, stock carbs are the way to go, and stock airbox will give you great power and dependability.
'75 Honda CB360 - thread

Offline Stayrad

  • Posts: 57
CB 360 no label parts build!
« Reply #43 on: Jun 06, 2018, 03:02:23 »


Because this is a parts build I might be too far gone for a stock air box .... but you are convincing me. ... the vain/design side of me loves the clean space no air box provides.

So my buddy brought his by .... just quickly put some fuel in them and hooked them up no cable no air filter.

It started right up with choke but idle was all over the place. Interesting though that it revved higher than the mikunis which tells me itís not the advancer or the ignition.

So Iíll probably order a rebuild kit tomorrow and see if I can get them to work.

This bike has me feeling a little bipolar. Iíve gone in so many directions.

I think Iím officially gonna name the bike ďthe teaseĒ cause thatís what itís doing to me.


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Offline Stayrad

  • Posts: 57
Re: CB 360 no label parts build!
« Reply #44 on: Jun 06, 2018, 03:16:06 »
if dependability is key, stock carbs are the way to go, and stock airbox will give you great power and dependability.
Hey miniature ninja I just realized Iím following your build on instagram. I think weíre kind of neighbors. Iím in Cameron park. When this bike is done we should ride up to Tahoe for some brews. Iíve got two guys I ride with. One on a cb750 and the other on a gs1000. I hope to ride this soon but also have a 2005 cbr 1000.

We are in no way pro but def have a good time tinkering and riding. I usually buy sell flip cars as a side hustle. Obviously carburetors are not my strong suit




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Offline irk miller

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Re: CB 360 no label parts build!
« Reply #45 on: Jun 06, 2018, 08:53:04 »
FWIW, I tried VM30 and VM28 on my 378 and still went back to a stock set modified by PJ.  LOL

Offline Stayrad

  • Posts: 57
Re: CB 360 no label parts build!
« Reply #46 on: Jun 06, 2018, 11:37:48 »
FWIW, I tried VM30 and VM28 on my 378 and still went back to a stock set modified by PJ.  LOL
Good to know is this a business of pjís or a friend deal because Iím interested if itís a business.


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Offline dakine_surf

  • Posts: 966
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Re: CB 360 no label parts build!
« Reply #47 on: Jun 06, 2018, 19:31:08 »
Good to know is this a business of pj’s or a friend deal because I’m interested if it’s a business.


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I believe PJ still does it as a business, top notch work... I know a few guys running his carbs on here can attest to his work.  However, I can't stress enough how much better a CB runs with the stock carbs and a stock airbox.  The ditching the airbox fad for some PODs is luckily fading.  Most people lack the patience and know how to make a bike run well with no airbox.  Remember, Honda spent tons of money designing the bike to perform well but also be reliable and a stock airbox flows better assuming you have a decent filter and your runners and rubber are in good condition without any leaks or cracks. 

The bikes on Pipeburn and Bike Exif with minimal clutter/pods typically never run as well as they look.  I can't tell you how many times I have jumped on a fresh cafe build or brat that just had endless tuning issues due to air delivery problems. 

Personally, I think the side covers look a million times better anyway
« Last Edit: Jun 06, 2018, 21:23:08 by dakine_surf »
Well I tried but I can't run no more
Tell Katie it's her that I adore
And as long as I love her best
I'm that much further west

Offline Stayrad

  • Posts: 57
Re: CB 360 no label parts build!
« Reply #48 on: Jun 06, 2018, 23:06:23 »
I believe PJ still does it as a business, top notch work... I know a few guys running his carbs on here can attest to his work.  However, I can't stress enough how much better a CB runs with the stock carbs and a stock airbox.  The ditching the airbox fad for some PODs is luckily fading.  Most people lack the patience and know how to make a bike run well with no airbox.  Remember, Honda spent tons of money designing the bike to perform well but also be reliable and a stock airbox flows better assuming you have a decent filter and your runners and rubber are in good condition without any leaks or cracks. 

The bikes on Pipeburn and Bike Exif with minimal clutter/pods typically never run as well as they look.  I can't tell you how many times I have jumped on a fresh cafe build or brat that just had endless tuning issues due to air delivery problems. 

Personally, I think the side covers look a million times better anyway
I can dig the side cover look as well. This one is just so far on its way to not have them. It would involve hunting down covers with no cracks and welding on tabs for them. I hear you and believe you.... just might have to wait until the next build.


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Offline Stayrad

  • Posts: 57
CB 360 no label parts build!
« Reply #49 on: Jun 06, 2018, 23:17:03 »
So the local shop had a 230 main jet. I popped it in just to see. This is 60 above what I was running. Haha. The problem still existed. Stalls at exactly the same spot. When I say stall I donít mean a small hiccup. I mean stalls out in an unrideable manner. I ordered a rebuild kit for the stock carbs. While I wait Iím gonna swap spark advancers with one that I ordered last week when I thought that could be the issue. I donít have high hopes but gonna try it anyway.


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