collapse

www.dimecitycycles.com

www.cognitomoto.com

https://www.townmoto.com/collections/vanson-leathers

www.speedmotoco.com

www.CITYLIMITMOTO.com

www.jadusmotorcycleparts.com

www.lostapostlejewelry.com

www.sparckmoto.com

www.pistonsociety.com


Author Topic: 75 CB360 - bad omen "yatagarasu" build  (Read 39229 times)

Offline advCo

  • DTT BOTM WINNER
  • *
  • Posts: 3220
  • Nick Ol' Eye
    • adventur Studios
Re: 75 CB360 - bad omen "yatagarasu" build
« Reply #420 on: Jul 31, 2018, 16:35:01 »
Pretty sure float height on the 360 is somewhere between 19-21 mm.  25 mm would lean it out not enrichen.

Offline MiniatureNinja

  • Posts: 521
Re: 75 CB360 - bad omen "yatagarasu" build
« Reply #421 on: Jul 31, 2018, 16:43:50 »
Pretty sure float height on the 360 is somewhere between 19-21 mm.  25 mm would lean it out not enrichen.
Ok so off the carbs come to change float high to 21mm, but again... that probably won't fix it.

Bike doesn't behave rich, it has plenty of power. But it doesnt need choke at all to start (then again it's hot as fuck here in fire central northern california)
'75 Honda CB360 - thread

Offline crazypj

  • Posts: 13454
  • Split personality, I fake being smart
Re: 75 CB360 - bad omen "yatagarasu" build
« Reply #422 on: Jul 31, 2018, 17:25:55 »
You measured float height wrong if you got 25mm, I set them to 21mm. Original points shouldn't be a problem, they are good to at least 10,500rpm. Battery sounds good @13.6 v, what was it showing at idle? Did you check pilot jets? They are under flat slot plug to side of primary and secondary main jets
« Last Edit: Jul 31, 2018, 17:33:14 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 MiniatureNinja

  • Posts: 521
Re: 75 CB360 - bad omen "yatagarasu" build
« Reply #423 on: Jul 31, 2018, 18:01:19 »
Pilot jets good. Measured like the manual says, vertical body and a micrometer. Just pulled them to check again and sure enough 25mm. I'll set them to 21


Also, plugs look like this, wet... oil? Not a spec of smoke comes out of the pipe... so I dont know what to make of this
'75 Honda CB360 - thread

Offline crazypj

  • Posts: 13454
  • Split personality, I fake being smart
Re: 75 CB360 - bad omen "yatagarasu" build
« Reply #424 on: Jul 31, 2018, 19:24:55 »
Don't know3 where you saw how to measure but that's wrong. Carbs inverted, tilt to about 70 degrees so arm is just contacting spring loaded shut off valve. Measure from gasket face to highest point of float. Service manuals always show carbs completely inverted but that is only to make the pictures easier to fit into the space available. Here's a quick pic of carbs I got Saturday, level is way too low
'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: 521
Re: 75 CB360 - bad omen "yatagarasu" build
« Reply #425 on: Jul 31, 2018, 20:13:15 »
Ok so the manual says to make the throat vertical. I then watched a few videos and read that the carbs need to be tilted. I did it the way you show in your picture

Carbs are sorted so I'm just trying to figure out the rest. I'm hoping the valve steam seals aren't leaking, or the rings aren't bypassing oil, because to me that plug looks pretty bad
'75 Honda CB360 - thread

Offline crazypj

  • Posts: 13454
  • Split personality, I fake being smart
Re: 75 CB360 - bad omen "yatagarasu" build
« Reply #426 on: Jul 31, 2018, 20:27:09 »
If your getting 25mm at that angle, the only thing I can think of is the retainer screw came out and valve seat has moved. I've never seen or heard of it or had it happen but anything is possible
'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 cb360j

  • Posts: 363
Re: 75 CB360 - bad omen "yatagarasu" build
« Reply #427 on: Aug 01, 2018, 16:25:06 »
Don't know3 where you saw how to measure but that's wrong. Carbs inverted, tilt to about 70 degrees so arm is just contacting spring loaded shut off valve. Measure from gasket face to highest point of float. Service manuals always show carbs completely inverted but that is only to make the pictures easier to fit into the space available. Here's a quick pic of carbs I got Saturday, level is way too low


Do these happen to be my dilapidated carbs? haha

Offline irk miller

  • DTT SUPPORTER
  • *
  • DTT BOTM WINNER
  • *
  • Posts: 9096
  • You've been mostly-dead all day.
Re: 75 CB360 - bad omen "yatagarasu" build
« Reply #428 on: Aug 01, 2018, 16:37:24 »
If your getting 25mm at that angle, the only thing I can think of is the retainer screw came out and valve seat has moved. I've never seen or heard of it or had it happen but anything is possible

Or the floats are upside down?

Offline crazypj

  • Posts: 13454
  • Split personality, I fake being smart
Re: 75 CB360 - bad omen "yatagarasu" build
« Reply #429 on: Aug 01, 2018, 21:50:13 »

Do these happen to be my dilapidated carbs? haha
Uuhmmmm,maybe, if your Shawn  ;)  Not having 'screen name' with carbs makes it 'interesting' trying to communicate. Not a problem when I only have one every two~three months but 3 in a week confuses the hell out of me  ;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