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Author Topic: 75 CB360 - bad omen "yatagarasu" build  (Read 25944 times)

Offline MiniatureNinja

  • Posts: 468
Re: 75 CB360 - bad omen "yatagarasu" build
« Reply #20 on: Jan 16, 2018, 22:50:12 »
wow I am dumb, didn't think about cornering. thank god I'm only dumb enough to hurt myself
'75 Honda CB360 - thread

Offline MiniatureNinja

  • Posts: 468
Re: 75 CB360 - bad omen "yatagarasu" build
« Reply #21 on: Jan 17, 2018, 01:22:30 »


CJ360 swingarm is slightly longer (by about an inch) than the CB, and I really liked the look of the CJ brake pedal.



yea lets drill holes in it
'75 Honda CB360 - thread

Offline crazypj

  • Posts: 13177
  • Split personality, I fake being smart
Re: 75 CB360 - bad omen "yatagarasu" build
« Reply #22 on: Jan 17, 2018, 10:07:02 »

CJ360 swingarm is slightly longer (by about an inch) than the CB, and I really liked the look of the CJ brake pedal.


I got hold of an XR200 'Pro Link' swing arm (about 4" longer) plus CJ brake pedal for 'Blue Bike'
Just need to get my arse in gear and get some work done on it again
'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 MiniatureNinja

  • Posts: 468
Re: 75 CB360 - bad omen "yatagarasu" build
« Reply #23 on: Jan 17, 2018, 12:13:32 »
I got hold of an XR200 'Pro Link' swing arm (about 4" longer) plus CJ brake pedal for 'Blue Bike'
Just need to get my arse in gear and get some work done on it again

I debated chopping and going 3 inches longer, I really want to retain the original appearance of the bike just make it low and mean. I suppose aluminum swingarm is nice and light, just looks out of place to me
'75 Honda CB360 - thread

Offline MiniatureNinja

  • Posts: 468
Re: 75 CB360 - bad omen "yatagarasu" build
« Reply #24 on: Jan 17, 2018, 17:13:53 »


side by side, stock cb360 vs GS850

Wonder if I will have to do anything to combustion camber in head to make these work properly
'75 Honda CB360 - thread

Offline irk miller

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Re: 75 CB360 - bad omen "yatagarasu" build
« Reply #25 on: Jan 17, 2018, 17:15:53 »
Wonder if I will have to do anything to combustion camber in head to make these work properly
Nope

Offline MiniatureNinja

  • Posts: 468
Re: 75 CB360 - bad omen "yatagarasu" build
« Reply #26 on: Jan 17, 2018, 18:23:20 »
Nope

Even with the flat part around the piston? Does that effect flow or combustion?
I'm thinking it will work for sure yes, seeing the larger number of people that have used these pistons but optimally... I guess modifying the piston is easier. Is there a compression change with the more dome shape?

Also just realized I have to use the gs piston pins, even thought I bought new cb ones, because they are about 1mm shorter and the clips won't work with the cb pins
« Last Edit: Jan 17, 2018, 18:25:31 by MiniatureNinja »
'75 Honda CB360 - thread

Offline crazypj

  • Posts: 13177
  • Split personality, I fake being smart
Re: 75 CB360 - bad omen "yatagarasu" build
« Reply #27 on: Jan 17, 2018, 18:41:52 »
Don't touch pistons or head, you set clearances with different thickness gaskets. CR comes up a bit due to size of overbore.
If you run 0.040" piston to head you can still use 87 Octane without problems Although I try to get 0.037"~0.038" and 2:1 - 87/93 when I can't get 91 octane. Bit nervous first time I tried it but couln't feel any difference even running a couple of tans 87
XR swing arm is silver painted steel, alloy would be nice but stock XR is direct fitand much easier to weld mounts for twin shock. I would have gotten an earlier twin shock one or XL but XR was easier to find
« Last Edit: Jan 17, 2018, 18:46:16 by crazypj »
'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 irk miller

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  • You've been mostly-dead all day.
Re: 75 CB360 - bad omen "yatagarasu" build
« Reply #28 on: Jan 17, 2018, 18:49:04 »
I used the XL250 swingarm on my second 360.  It was a super easy swap to dual shocks.  And like PJ said, I also used 042 copper base gasket to get deck height right. 


Offline MiniatureNinja

  • Posts: 468
Re: 75 CB360 - bad omen "yatagarasu" build
« Reply #29 on: Jan 17, 2018, 18:53:44 »
Don't touch pistons or head, you set clearances with different thickness gaskets. CR comes up a bit due to size of overbore.
If you run 0.040" piston to head you can still use 87 Octane without problems Although I try to get 0.037"~0.038" and 2:1 - 87/93 when I can't get 91 octane. Bit nervous first time I tried it but couln't feel any difference even running a couple of tans 87
XR swing arm is silver painted steel, alloy would be nice but stock XR is direct fitand much easier to weld mounts for twin shock. I would have gotten an earlier twin shock one or XL but XR was easier to find

I got my gasket kit in, and ordered a .040 copper head gasket, will have to see if I need to do something with base gasket to get the right clearance - copper base gasket worth it? seams like every time I click a thread or photo searching for info or vendors on this stuff I get a dead link or expired photo.
'75 Honda CB360 - thread