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Author Topic: 1974 CB360 Engine Troubles (I think)  (Read 10468 times)

Offline crazypj

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Re: 1974 CB360 Engine Troubles (I think)
« Reply #130 on: Aug 14, 2017, 18:52:06 »
read the previous post. It's weird but completely normal to see air in 360 fuel lines. Trek has thebest idea having heat shielding on lines.
The carbs get very hot when bike is runnng, the main cooling is from fuel evaporating. 16mm float height will cause real rich mixture at all engine speeds.
'you can take my word for it or argue until you find out I'm right'
I gave my girlfriend an orgasm the other night, but, she spat it back at me
 Some humans would do anything to see if it was possible to do it. If you put a large switch in some cave somewhere, with a sign on it saying 'End-of-the-World Switch. PLEASE DO NOT TOUCH', the paint wouldn't even have time to dry
 Itís not worth doing something unless someone, somewhere, would much rather you werenít doing it  (Terry Pratchett)
CB360's,  http://www.dotheton.com/forum/index.php?topic=11736.0
XS650,  http://www.dotheton.com/forum/index.php?topic=11922.0

Offline trek97

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Re: 1974 CB360 Engine Troubles (I think)
« Reply #131 on: Aug 14, 2017, 19:47:14 »
You just need to sort out one problem at a time. 

Did you get the new diaphragm installed?

Keep in mind a torn diaphragm will make it go lean in higher rpm.

No fuel in the carb bowl will make it go lean in all rpm.   ;)

A lean condition is more damaging (over heating, cracked valves, holed pistons...etc) to the engine than rich condition.  So, dont let her run lean.

With the engine cold.  Open bowl drain screw and drain carb bowl, leave bowl drain screw open, open fuel tap, float needle should be open and gas will start to pour out of bowl drain, close bowl drain screw.  If no fuel comes out after opening fuel tap, you got a stuck float/needle. 



« Last Edit: Aug 14, 2017, 20:11:15 by trek97 »

Offline trek97

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Re: 1974 CB360 Engine Troubles (I think)
« Reply #132 on: Aug 14, 2017, 20:21:15 »
Heat shield on my fuel lines.  Lines cut as short as possible without kinks.


Offline crazypj

  • Posts: 12487
  • Split personality, I fake being smart
Re: 1974 CB360 Engine Troubles (I think)
« Reply #133 on: Aug 14, 2017, 20:59:11 »
Did you do underneath tank with heat reflective tape?
'you can take my word for it or argue until you find out I'm right'
I gave my girlfriend an orgasm the other night, but, she spat it back at me
 Some humans would do anything to see if it was possible to do it. If you put a large switch in some cave somewhere, with a sign on it saying 'End-of-the-World Switch. PLEASE DO NOT TOUCH', the paint wouldn't even have time to dry
 Itís not worth doing something unless someone, somewhere, would much rather you werenít doing it  (Terry Pratchett)
CB360's,  http://www.dotheton.com/forum/index.php?topic=11736.0
XS650,  http://www.dotheton.com/forum/index.php?topic=11922.0

Offline trek97

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Re: 1974 CB360 Engine Troubles (I think)
« Reply #134 on: Aug 14, 2017, 21:16:30 »
Did you do underneath tank with heat reflective tape?

Yes, but my CL350 tank sits closer to the engine than a stock 360 tank.

Offline crazypj

  • Posts: 12487
  • Split personality, I fake being smart
Re: 1974 CB360 Engine Troubles (I think)
« Reply #135 on: Aug 14, 2017, 22:26:39 »
I've been thinking of fitting a 'Tufnol' plate to the mounting plate to deflect some of the heat away from carbs. I have some about 1/16" thick sheet. The carb mounting plate has the ejection pin bosses that could easily be drilled at tapped 3mm~4mm.

'you can take my word for it or argue until you find out I'm right'
I gave my girlfriend an orgasm the other night, but, she spat it back at me
 Some humans would do anything to see if it was possible to do it. If you put a large switch in some cave somewhere, with a sign on it saying 'End-of-the-World Switch. PLEASE DO NOT TOUCH', the paint wouldn't even have time to dry
 Itís not worth doing something unless someone, somewhere, would much rather you werenít doing it  (Terry Pratchett)
CB360's,  http://www.dotheton.com/forum/index.php?topic=11736.0
XS650,  http://www.dotheton.com/forum/index.php?topic=11922.0

Offline trek97

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Re: 1974 CB360 Engine Troubles (I think)
« Reply #136 on: Aug 15, 2017, 06:27:20 »
I've been thinking of fitting a 'Tufnol' plate to the mounting plate to deflect some of the heat away from carbs. I have some about 1/16" thick sheet. The carb mounting plate has the ejection pin bosses that could easily be drilled at tapped 3mm~4mm.

Ive worked plenty on carbs w engine hot enough to burn my knuckles. 
But dont recall being overly concerned about the temp of the carb bodies. (at the time)

Next time I go for a ride I will check the temp of the bodies.

I used the gold foil tape to shield the 360 tank w great success.
 
Now got a scrap of "the good stuff" left over from the BMW tank.

Its self adhesive fiberglass mat w aluminum shielding.  It could be cut to fit and adhere directly onto carb mount plate.

Your idea of a separate plastic shield w larger air space between would be best.  I had to google "Tufnol"  haha.



« Last Edit: Aug 15, 2017, 06:37:42 by trek97 »

Offline crazypj

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  • Split personality, I fake being smart
Re: 1974 CB360 Engine Troubles (I think)
« Reply #137 on: Aug 17, 2017, 13:33:20 »
Not sure the BM needs the expensive shielding as te flying brick has most of the heat well away from tank. I know it won't arm anything though and may well keep fuel cooler. Any idea if fuel economy is better with it?
'you can take my word for it or argue until you find out I'm right'
I gave my girlfriend an orgasm the other night, but, she spat it back at me
 Some humans would do anything to see if it was possible to do it. If you put a large switch in some cave somewhere, with a sign on it saying 'End-of-the-World Switch. PLEASE DO NOT TOUCH', the paint wouldn't even have time to dry
 Itís not worth doing something unless someone, somewhere, would much rather you werenít doing it  (Terry Pratchett)
CB360's,  http://www.dotheton.com/forum/index.php?topic=11736.0
XS650,  http://www.dotheton.com/forum/index.php?topic=11922.0

Offline rsjudka

  • Posts: 92
Re: 1974 CB360 Engine Troubles (I think)
« Reply #138 on: Aug 19, 2017, 19:20:07 »
Back from a well-needed vacation, and I think it's awesome that you guys started having convos about your own bikes here, really interesting stuff!

I just installed my new flasher, and although the stock lights are brighter, the LEDs still aren't working. What are some things I should look at to see what could be the issue? (using aftermarket turning signals w/ pos and neg wires)

BTW, I did try to swap the two wires on the flasher connectors, but that only made the filament bulbs not work
« Last Edit: Aug 19, 2017, 19:21:49 by rsjudka »

Offline crazypj

  • Posts: 12487
  • Split personality, I fake being smart
Re: 1974 CB360 Engine Troubles (I think)
« Reply #139 on: Aug 21, 2017, 14:25:12 »
What colour wires are coming from aftermarket indicators?
 You may have running lights in them and need body grounded?
'you can take my word for it or argue until you find out I'm right'
I gave my girlfriend an orgasm the other night, but, she spat it back at me
 Some humans would do anything to see if it was possible to do it. If you put a large switch in some cave somewhere, with a sign on it saying 'End-of-the-World Switch. PLEASE DO NOT TOUCH', the paint wouldn't even have time to dry
 Itís not worth doing something unless someone, somewhere, would much rather you werenít doing it  (Terry Pratchett)
CB360's,  http://www.dotheton.com/forum/index.php?topic=11736.0
XS650,  http://www.dotheton.com/forum/index.php?topic=11922.0