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Author Topic: 1974 CB360 Engine Troubles (I think)  (Read 8506 times)

Online irk miller

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Re: 1974 CB360 Engine Troubles (I think)
« Reply #40 on: Jun 26, 2017, 22:52:40 »
When you do the timing adjustment you want the spark plugs out so you're not working against the compression.  You can use a breaker bar handle to counter balance the alternator so it doesn't move. Or carefully wedge a small screwdriver tip in-between the stator and the alternator. 

Online trek97

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Re: 1974 CB360 Engine Troubles (I think)
« Reply #41 on: Jun 26, 2017, 23:25:30 »
Guys I feel like I'm almost there!

So I did the valve clearance adjustment, and when I started it up there was a loud ticking noise (I'm assuming because my tappet screws were too loose?) but no smoke and sounded much more powerful! Could the ticking be because I didn't do the carb sync yet?

Also, when I was doing the adjustment, I couldn't get it exactly on the LT and T mark, because anytime I tried it shifted like 1 cm over by itself. Is that bad?
The reason it feel like it "shifts by itself" is the magnets on the rotor.

Hard to explain but I thread a cover bolt in then use a zip tie to hold the wrench to keep exactly on mark.

Ticking noise is not because carbs are out of sync.  Recheck your valve adjustment. 

Offline rsjudka

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Re: 1974 CB360 Engine Troubles (I think)
« Reply #42 on: Jun 28, 2017, 23:06:22 »
Aaaand I'm back.

So I got through all the steps and now I just did my carb adjustment. I think I got it right, except when the bike revs it seems like the right side revs longer. Does that make sense?

Also, the smoke and popping are no more! (Except when you rev really high, is that normal?)

Also, the bike gets hot, I mean steaming hot. And the right muffler feels hotter than the left.

Online irk miller

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Re: 1974 CB360 Engine Troubles (I think)
« Reply #43 on: Jun 29, 2017, 00:55:50 »
Aaaand I'm back.

So I got through all the steps and now I just did my carb adjustment. I think I got it right, except when the bike revs it seems like the right side revs longer. Does that make sense?

Also, the smoke and popping are no more! (Except when you rev really high, is that normal?)

Also, the bike gets hot, I mean steaming hot. And the right muffler feels hotter than the left.
Your carbs need to be synced.

Offline rsjudka

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Re: 1974 CB360 Engine Troubles (I think)
« Reply #44 on: Jul 09, 2017, 02:08:01 »
First of all I just want to thank all of you so far for all your help!

I've eliminated the oil leaking, the smoke from the mufflers, the overheating on one side, and the idling issues.

The bike sounds as it should now when idling, but when I took it out for a test ride, I noticed a few things...
   • ticking gets louder the faster I ride
   • it rides rough in the first 2 gears, but gets better the faster I go

I also feel like I'm constantly charging the battery, like every 3 days, even though it's a new battery

Does it still seem like there's major problems with the engine, or is it just down to fine tuning now?

Offline rsjudka

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Re: 1974 CB360 Engine Troubles (I think)
« Reply #45 on: Jul 09, 2017, 18:10:20 »
Just to clarify, it feels less powerful in gears 1-3, and feels like it chokes up sometimes in those low gears.

Offline crazypj

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Re: 1974 CB360 Engine Troubles (I think)
« Reply #46 on: Jul 09, 2017, 18:14:55 »
You shouldn't need to charge battery every couple of days unless there is a problem with battery or charging system. Have you fitted a 'modern' regulator rectifier? In my experience there is usually no problem with the generator windings or rotor magnets, physical damage is pretty easily seen or can be tested with multi-meter. The wiring to main block connector can be damaged or more likely corrosion in block connectors and/or red/white wire on rectifier is broken or corroded. I Don't know if anyone has tried it yet but I've been thinking of modifying a stock rotor by fitting neodymium magnets to increase magnetic flux and low speed charging.
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Offline rsjudka

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Re: 1974 CB360 Engine Troubles (I think)
« Reply #47 on: Jul 10, 2017, 00:47:57 »
You shouldn't need to charge battery every couple of days unless there is a problem with battery or charging system. Have you fitted a 'modern' regulator rectifier? In my experience there is usually no problem with the generator windings or rotor magnets, physical damage is pretty easily seen or can be tested with multi-meter. The wiring to main block connector can be damaged or more likely corrosion in block connectors and/or red/white wire on rectifier is broken or corroded. I Don't know if anyone has tried it yet but I've been thinking of modifying a stock rotor by fitting neodymium magnets to increase magnetic flux and low speed charging.
I haven't changed any of the electrical parts to the bike, but by the looks of it the rectifier looks super super old. Should I try upgrading it with the one sold on cmc?

Also, do you have any idea about what could be causing low power issues at the lower gears?

Online trek97

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Re: 1974 CB360 Engine Troubles (I think)
« Reply #48 on: Jul 10, 2017, 08:00:58 »
I haven't changed any of the electrical parts to the bike, but by the looks of it the rectifier looks super super old. Should I try upgrading it with the one sold on cmc?

Also, do you have any idea about what could be causing low power issues at the lower gears?

Most importantly carb sync.  You cant tune out of sync carbs.  They must work together (the same from the start) then work on tuning adjustments...

I am a HUGE fan of sparckmoto.com stuff.  Owner, Sonreir is a longtime DTT member.  http://www.sparckmoto.com/Products

Offline rsjudka

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Re: 1974 CB360 Engine Troubles (I think)
« Reply #49 on: Jul 10, 2017, 12:04:02 »
I am new this so I may have done it wrong, but I do believe I did the carb sync correctly. I followed the video posted by CMC about doing a carb sync on a cb360 using his carb sync adapters.

Got equal reading from both carbs and both mufflers feel like they have even pressure. Is there some other measurement I can use to see if my carbs are synced properly?