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Offline Duanob

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It's Alive!
« on: October 01, 2024, 03:34:44 PM »
Got this project back on the road. Still some fine tuning. The 4 into 1 sounds great. Went through the carbs completely and synced. Complete brake refurbish, all new or newer cables and hoses, oil, spark plugs, chain, fork oil, new rubber, some new electrical. Adjusted just about everything there was to adjust. The final was the clutch, I'd almost forgot how to do that.

a couple of final questions, I searched for a proper plug chop but couldn't find one, does anybody have a tutorial or vid. I'd like to see how the carbs are mixed at idle, mid range and WOT.

And if someone can refresh my memory for Keihin 087A carbs, the idle screw is screw out for more air?
« Last Edit: October 01, 2024, 03:37:28 PM by Duanob »
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1974 CB360T
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Offline newday777

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Re: It's Alive!
« Reply #1 on: October 01, 2024, 03:59:53 PM »
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Stu
Honda Parts manager in the mid 1970s Nashua Honda
My current rides
1975 K5 Planet Blue my summer ride, it was a friend's bike I worked with at the Honda shop in 76, lots of fun to be on it again
1976 K6 Anteres Red rebuilding project, was originally my brother's that I set up from the crate, it'll breath again soon!
Project 750s, 2 K4, 2 K6, 1 K8
2008 GL1800 my daily ride and cross country runner

Prior bikes....
1972 Suzuki GT380 I had charge of it for a year in 1973 while my friend was deployed and learned to love street riding....
New CB450 K7 after my friend returned...
New CB750 K5 Planet Blue, demise by ex cousin in law at 9,000 miles...
New CB750 K6 Anteres Red, to replace the totaled K5, I sold this K6 at 45k in 1983, I had heavily modified it, many great memories on it and have missed it greatly.....
1983 GL1100A, 1999 GL1500 SE, 1999 GL1500A

Offline newday777

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Re: It's Alive!
« Reply #2 on: October 01, 2024, 04:01:56 PM »
And congratulations on getting it running
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Stu
Honda Parts manager in the mid 1970s Nashua Honda
My current rides
1975 K5 Planet Blue my summer ride, it was a friend's bike I worked with at the Honda shop in 76, lots of fun to be on it again
1976 K6 Anteres Red rebuilding project, was originally my brother's that I set up from the crate, it'll breath again soon!
Project 750s, 2 K4, 2 K6, 1 K8
2008 GL1800 my daily ride and cross country runner

Prior bikes....
1972 Suzuki GT380 I had charge of it for a year in 1973 while my friend was deployed and learned to love street riding....
New CB450 K7 after my friend returned...
New CB750 K5 Planet Blue, demise by ex cousin in law at 9,000 miles...
New CB750 K6 Anteres Red, to replace the totaled K5, I sold this K6 at 45k in 1983, I had heavily modified it, many great memories on it and have missed it greatly.....
1983 GL1100A, 1999 GL1500 SE, 1999 GL1500A

Offline grcamna2

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Re: It's Alive!
« Reply #3 on: October 01, 2024, 04:35:26 PM »
Quote from: newday777 on October 01, 2024, 04:01:56 PM
And congratulations on getting it running

+1
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Offline jonda500

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Re: It's Alive!
« Reply #4 on: October 01, 2024, 09:04:42 PM »
"screw out for more air?"
Yes, for those carbs screw the idle mixture screws out for more air (leaner), in for less air (richer).
John
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Remember that an ignoramus is only someone who doesn't know something you just learned yesterday!

A starter clutch thread:
http://forums.sohc4.net/index.php/topic,122084.0.html
1972 CB500K1 original 4 owner bike
1972 CB500K1 returned to complete/original condition
1975 CB550F built from parts - project thread:
http://forums.sohc4.net/index.php/topic,149161.msg1711626.html#msg1711626
197? CB500/550 constructing from left over parts
1998 KTM 380 (two stroke) recent impulse buy, mmmm...

Offline Flyin900

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Re: It's Alive!
« Reply #5 on: October 02, 2024, 06:26:57 AM »
Quote from: jonda500 on October 01, 2024, 09:04:42 PM
"screw out for more air?"
Yes, for those carbs screw the idle mixture screws out for more air (leaner), in for less air (richer).
John

Are you sure that's correct? I always thought that the adjustment screw on the engine side was a fuel screw and on the air box side an air screw. Don't those carbs have the adjustment screw on the engine side?

Just clarifying for my own knowledge.
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1966 CL77 - 305cc - Gentleman's Scrambler
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1973 CB350F - Flake Matador Red - Super Sport
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1976 CB400F - Varnish Blue - Super Sport
1976 GL1000 - Goldwing Standard
1978 CB550K - Super Sport
1981 GL1100 - Goldwing Standard
1982 CM450A - Hondamatic
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Offline jonda500

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Re: It's Alive!
« Reply #6 on: October 02, 2024, 07:20:00 AM »
Quote from: Flyin900 on October 02, 2024, 06:26:57 AM
Quote from: jonda500 on October 01, 2024, 09:04:42 PM
"screw out for more air?"
Yes, for those carbs screw the idle mixture screws out for more air (leaner), in for less air (richer).
John

Are you sure that's correct? I always thought that the adjustment screw on the engine side was a fuel screw and on the air box side an air screw. Don't those carbs have the adjustment screw on the engine side?

Just clarifying for my own knowledge.
The PD carbs found on 77/78 550K's have fuel screws. Those 087A carbs clearly have the screws on the air filter side so they are air screws, you thought correct!
John
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Remember that an ignoramus is only someone who doesn't know something you just learned yesterday!

A starter clutch thread:
http://forums.sohc4.net/index.php/topic,122084.0.html
1972 CB500K1 original 4 owner bike
1972 CB500K1 returned to complete/original condition
1975 CB550F built from parts - project thread:
http://forums.sohc4.net/index.php/topic,149161.msg1711626.html#msg1711626
197? CB500/550 constructing from left over parts
1998 KTM 380 (two stroke) recent impulse buy, mmmm...

Offline Duanob

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Re: It's Alive!
« Reply #7 on: October 02, 2024, 09:41:47 AM »
Thanks all! It's been 10 years since I last worked on one of these but thanks to you all it's all coming back. I forgot how much fun it is figuring these 4.bangers out and getting them back on the road.
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"Just because you flush a boatload of money down the toilet, doesn't make the toilet worth more",  My Stepfather the Unknown Poet

1974 CB360T
1976 CB550K2 Resurrected
1976 CB550F2 Barn Find
1979 CX500 VG "HONDA-GUZZI"
2007 Moto Guzzi Breva 750ie
2015 BMW F700GS
Another 1976 CB550K Cafe?

  __o
_- \_<,
(*) /' (*)
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