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BRITISH COLUMBIA CLASSIC MOTORCYCLE CLUB
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Author Topic: if you are out for a ride let's see some pics!  (Read 689386 times)
Galactica
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« Reply #2475 on: June 30, 2017, 09:43:03 AM »

I had the '75 VM28s on there, but there was something very wrong with the #3 carb I couldn't fix. So I rebuilt the VM26SSs I had on a shelf. They have a pilot screw rather than an air screw. I think ma Kaw used them in '77 & '78.

I jetted the 26s as per my kz1000 manual with 15 pilot, 105 mains, needle clip at 3rd ring, and pilot screw out 1 turn. Well, it started and ran, but only just. Severe bogging and missing on throttle, and major popping on decelleration. But...all the plugs looked equal, so I figured it was the carb settings.

I spoke with Rick at Bby Kaw. He said the mixture screw was way too lean, should be out at least 2 1/2 turns, and changed them to 3 turns. It still ran like crap, but the popping on decelleration was gone. I took off the carbs , upsized the jets 2 sizes to 20 pilots and 110 mains, and mixture screws to 2 turns because it smelled rch at idle.

It ran fantastic. Choke on, push start button, choke off, idle.  It was just that easy. Still smelled a bit rich so turned in the mixture screws to 1 1/2 turns. Better and still no popping. A little boggey at wide open throttle, so I could probably upsize the mains, but I think I'll just leave it. Now she's ready for a trip somewhere.

As for the VM28 #3 carb, I'll take another look at it sometime. Otherwise, it's a perfect set, so worth persuing.
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Past rides:
75 Honda CB750K5
80 Suzuki TS250
 ? Yamaha Maxim 550
73 Z1 900
76 Kz900 A1
77 Kz1000 A1
78 Kz1000 B2 Ltd
79 Kz1000 B3 Ltd
80 Kz1000 C
99 Triumph Tiger 900
84 Honda VF750 Interceptor
77 Honda CB750


Current ride:
2019 Yamaha Tracer900

Current project:
1975 Honda CB750K5
754
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« Reply #2476 on: June 30, 2017, 10:35:00 AM »

+1. On the flow of the body parts..

Henry was thatvyou taking the North exit into Vernon..about. 9:45 this morning..?
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Feel free to discuss anything I post on here, its an open forum, and I welcome comments and discussion.. I am not the kid who parades his Bat & Ball at the ballpark, but wont let anyone else play with it..
..VaaV....
hardrockminer
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« Reply #2477 on: June 30, 2017, 10:58:01 AM »

I had the '75 VM28s on there, but there was something very wrong with the #3 carb I couldn't fix. So I rebuilt the VM26SSs I had on a shelf. They have a pilot screw rather than an air screw. I think ma Kaw used them in '77 & '78.

I jetted the 26s as per my kz1000 manual with 15 pilot, 105 mains, needle clip at 3rd ring, and pilot screw out 1 turn. Well, it started and ran, but only just. Severe bogging and missing on throttle, and major popping on decelleration. But...all the plugs looked equal, so I figured it was the carb settings.

I spoke with Rick at Bby Kaw. He said the mixture screw was way too lean, should be out at least 2 1/2 turns, and changed them to 3 turns. It still ran like crap, but the popping on decelleration was gone. I took off the carbs , upsized the jets 2 sizes to 20 pilots and 110 mains, and mixture screws to 2 turns because it smelled rch at idle.

It ran fantastic. Choke on, push start button, choke off, idle.  It was just that easy. Still smelled a bit rich so turned in the mixture screws to 1 1/2 turns. Better and still no popping. A little boggey at wide open throttle, so I could probably upsize the mains, but I think I'll just leave it. Now she's ready for a trip somewhere.

As for the VM28 #3 carb, I'll take another look at it sometime. Otherwise, it's a perfect set, so worth persuing.

I have a set of VM26SS carbs with air screws that were on my Z1B rebuild.  I haven't used them on anything yet but was thinking of putting them on the B4 to try to stop the barking.  Last weekend I took the VM28 pumpers off and went up to 22.5 pilots and re-installed.  It helped but still not right.  Compression was 140,125,120,140 from L to R.  Plugs 1 to 3 were a bit dry.  4 was a bit sooty.  Checked valve clearance and changed one shim.  I didn't mechanically synch the carbs before re-installing...I just forgot. 

I also tried to install that disc you gave me.  It's smaller dia than the ones I have so I need to find another one to stop the brake pulsing.  I should have checked before pulling the wheel off my bike, which was work well wasted!  Wish I had a bigger garage as there's no room for a beer fridge!
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Past rides include a 1973 Suzuki GT380 & a 1975 Kawasaki Z1B

I currently ride a 1975 Kawasaki Z1B - Classic Plated
I also ride a 1980 Kawasaki KZ 1000 LTD - Classic Plated, and a 2006 Honda Goldwing with a Daytona 2+2 sidecar

My Sweetums rides a 2019 Suzuki DR650
754
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« Reply #2478 on: June 30, 2017, 11:11:18 AM »

No fridge that is bad....break out you Oscar cooler, make ice in your freezer maybe..
What is barking ? I thought only DOG riders get that on their bikes..
« Last Edit: June 30, 2017, 11:16:43 AM by 754 » Logged

Feel free to discuss anything I post on here, its an open forum, and I welcome comments and discussion.. I am not the kid who parades his Bat & Ball at the ballpark, but wont let anyone else play with it..
..VaaV....
kaw74
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« Reply #2479 on: June 30, 2017, 01:53:54 PM »

+1. On the flow of the body parts..

Henry was thatvyou taking the North exit into Vernon..about. 9:45 this morning..?
Yes it was.
 Had a nice ride around Armstrong and Salmon arm today.
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hardrockminer
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« Reply #2480 on: June 30, 2017, 06:26:51 PM »

No fridge that is bad....break out you Oscar cooler, make ice in your freezer maybe..
What is barking ? I thought only DOG riders get that on their bikes..

Barking?  That's when the engine runs ruff!!
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Past rides include a 1973 Suzuki GT380 & a 1975 Kawasaki Z1B

I currently ride a 1975 Kawasaki Z1B - Classic Plated
I also ride a 1980 Kawasaki KZ 1000 LTD - Classic Plated, and a 2006 Honda Goldwing with a Daytona 2+2 sidecar

My Sweetums rides a 2019 Suzuki DR650
754
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« Reply #2481 on: June 30, 2017, 08:42:52 PM »

Rich ruff, lean ruff, lack of fuel ruff?
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Feel free to discuss anything I post on here, its an open forum, and I welcome comments and discussion.. I am not the kid who parades his Bat & Ball at the ballpark, but wont let anyone else play with it..
..VaaV....
kaw74
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« Reply #2482 on: July 01, 2017, 04:03:29 PM »

Went for a ride down Duck range rd  to Glens for a very warm 36 degree spin. Shocked
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MJ
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« Reply #2483 on: July 01, 2017, 04:09:21 PM »

^^bike looks nice
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Wheels
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« Reply #2484 on: July 01, 2017, 06:34:40 PM »

Was that a professional photographer that is a very nice pic Henry,  and yes I am jealous.
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kaw74
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« Reply #2485 on: July 01, 2017, 06:53:13 PM »

Was that a professional photographer that is a very nice pic Henry,  and yes I am jealous.
Nope just an amateur with a old camera  Grin



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kilowop
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« Reply #2486 on: July 01, 2017, 06:59:25 PM »

Great Combo......old bike....old rider....old camera.  Somethings just get better with age.
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Current rides:                                                      
 2022 Suzuki V-Strom 650                                                         
'81 Suzuki GS-550 "T" (collector status)
2009 Suzuki Burgman 650 Mega Scooter




 
"SOME" PAST RIDES: In no particular order
51 Matchless 500 single      53 AJS 500 single
62 Triumph T-100SS          57 Triumph T-100R
66 Norton N-15 - 750 Scrambler
68 Honda CB 450               68 Honda CB-250
69 Honda CL 450               71 Suzuki 350
73 Suzuki GT-550 Triple      71(?) Honda SL-350
73 Honda XL-250               76 Honda CB-400F
77 Yamaha XS 500             80 Suzuki GS-550E
81 Suzuki GS-750E             81 Suzuki GS1100E           
81 Honda CB-900C
with Hondaline Tour Pak     '02 Honda CB-900F(Hornet 919)
'90 Honda ST-1100 (collector status)
'83 Suzuki GS-750 T  (collector status)        '82 Suzuki GS-550 Katana
'80 Suzuki GS-850 G          '80 Suzuki GS-1000G(collector status)
'06-Suzuki DL-650 V-Strom      
'82 Yamaha Seca 650
'07 Yamaha FJR-1300         82 Suzuki GS-850G-Collector status
'86 Suzuki GS-400ES          82 Suzuki GS-650GL-Collector status
'79 Honda CBX                  82 Suzuki GS-650-G-Collector status
'81 Honda CBX (x2)           82 Honda 450 Hawk
98 Triumph Trophy 900     06 Kawasaki Concours
'05 Suzuki Burgman 650(Super Scooter)
2018 Suzuki Burgman Executive 650 Scooter
azr
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She may be old but she'll do :)


« Reply #2487 on: July 01, 2017, 09:20:13 PM »

Loving this more each time I ride it

2017-07-01_06-28-02 by Rob Ert, on Flickr
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MJ
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« Reply #2488 on: July 01, 2017, 11:29:08 PM »

Great Combo......old bike....old rider....old camera.  Somethings just get better with age.
Like cheese
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Galactica
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« Reply #2489 on: July 04, 2017, 05:40:39 PM »

I had the '75 VM28s on there, but there was something very wrong with the #3 carb I couldn't fix. So I rebuilt the VM26SSs I had on a shelf. They have a pilot screw rather than an air screw. I think ma Kaw used them in '77 & '78.

I jetted the 26s as per my kz1000 manual with 15 pilot, 105 mains, needle clip at 3rd ring, and pilot screw out 1 turn. Well, it started and ran, but only just. Severe bogging and missing on throttle, and major popping on decelleration. But...all the plugs looked equal, so I figured it was the carb settings.

I spoke with Rick at Bby Kaw. He said the mixture screw was way too lean, should be out at least 2 1/2 turns, and changed them to 3 turns. It still ran like crap, but the popping on decelleration was gone. I took off the carbs , upsized the jets 2 sizes to 20 pilots and 110 mains, and mixture screws to 2 turns because it smelled rch at idle.

It ran fantastic. Choke on, push start button, choke off, idle.  It was just that easy. Still smelled a bit rich so turned in the mixture screws to 1 1/2 turns. Better and still no popping. A little boggey at wide open throttle, so I could probably upsize the mains, but I think I'll just leave it. Now she's ready for a trip somewhere.

As for the VM28 #3 carb, I'll take another look at it sometime. Otherwise, it's a perfect set, so worth persuing.

I have a set of VM26SS carbs with air screws that were on my Z1B rebuild.  I haven't used them on anything yet but was thinking of putting them on the B4 to try to stop the barking.  Last weekend I took the VM28 pumpers off and went up to 22.5 pilots and re-installed.  It helped but still not right.  Compression was 140,125,120,140 from L to R.  Plugs 1 to 3 were a bit dry.  4 was a bit sooty.  Checked valve clearance and changed one shim.  I didn't mechanically synch the carbs before re-installing...I just forgot. 

I also tried to install that disc you gave me.  It's smaller dia than the ones I have so I need to find another one to stop the brake pulsing.  I should have checked before pulling the wheel off my bike, which was work well wasted!  Wish I had a bigger garage as there's no room for a beer fridge!

Bill,
I gotta think, with a stock motor, and maybe a 4-1 header, 22.5 pilot jets should be rich enough. Maybe try enriching your air screws. Maybe try it with the screws out one turn rather than 1 1/2 turns, or even richer.

How well does it start when cold? Does it idle without messing with the idle screw? Does it seem to hunt riding at low rpms? Is the idle consistent when riding around town?  Does it take a bit of riding until it gets warm enough to be smooth?

Ross
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Past rides:
75 Honda CB750K5
80 Suzuki TS250
 ? Yamaha Maxim 550
73 Z1 900
76 Kz900 A1
77 Kz1000 A1
78 Kz1000 B2 Ltd
79 Kz1000 B3 Ltd
80 Kz1000 C
99 Triumph Tiger 900
84 Honda VF750 Interceptor
77 Honda CB750


Current ride:
2019 Yamaha Tracer900

Current project:
1975 Honda CB750K5
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