Author Topic: '77 cb750f2 cafe project  (Read 17746 times)

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Offline Freaky1

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Re: '77 cb750f2 cafe project - carbs
« Reply #50 on: February 22, 2011, 04:35:51 AM »
The first time around when I used earlier model carbs I just picked them up from a local dealer, probably not the cheapest route.
That which does not kill you leaves cool scabs which turn into awesome scars.

'77 CB750F Come on...were almost there!

Offline kenneyginter

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Re: '77 cb750f2 cafe project
« Reply #51 on: July 10, 2011, 06:15:38 PM »
starting to do some work on the frame. all is stripped off except for the swing arm. I am having a difficult time trying to removing the swing arm bolt. the nut doesn't seem to want to move. anyone else have trouble with this? tips? i tired heating the nut but that got me no where.

as an update to this thread, i have completed the rebuild of the carbs and ordered more pieces for the cafe racer. its not going to be a million dollar bike but i am please at where it is headed. i will post more pictures when i get a chance. thanks.
77' cb750f2 cafe project
build thread http://forums.sohc4.net/index.php?topic=82251.0

Offline kenneyginter

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Re: '77 cb750f2 cafe project
« Reply #52 on: July 12, 2011, 08:42:18 AM »
just to clarify its the 23mm nut right near the foot brake.
77' cb750f2 cafe project
build thread http://forums.sohc4.net/index.php?topic=82251.0

Offline kenneyginter

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Re: '77 cb750f2 cafe project
« Reply #53 on: January 14, 2012, 02:04:00 PM »
Started working on the bike again this week. It's coming along but had a question. Can the cornstar rims be taken apart to be cleaned and or painted and then reassembled? Has anyone do this? Advice? Thanks for your help.
« Last Edit: March 23, 2012, 11:24:19 AM by scottjohnsonw »
77' cb750f2 cafe project
build thread http://forums.sohc4.net/index.php?topic=82251.0

Offline Terry in Australia

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Re: '77 cb750f2 cornstar rims
« Reply #54 on: January 14, 2012, 02:35:36 PM »
The comstar wheels are rivetted together mate, so to disassemble them, you'd need to carefully remove the rivets, do whatever you want to do to them and then rivet them back together. A pretty ambitious project I'd think, and personally I wouldn't advise it, I'd hate for one of your wheels to come apart while you're riding it, unless you like hospital food? Cheers, Terry. ;D
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Offline Freaky1

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Re: '77 cb750f2 cornstar rims
« Reply #55 on: January 15, 2012, 05:44:59 PM »
I seem to remember someone on the forum a while back talking about pulling the rivets but I can't remember if he actually did or what the outcome was.
That which does not kill you leaves cool scabs which turn into awesome scars.

'77 CB750F Come on...were almost there!

Offline Retro Rocket

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Re: '77 cb750f2 cornstar rims
« Reply #56 on: January 15, 2012, 06:09:50 PM »
I seem to remember someone on the forum a while back talking about pulling the rivets but I can't remember if he actually did or what the outcome was.
I think this is the bike in question....

750 K2 1000cc
750 F1 970cc
750 Bitsa 900cc
If You can't fix it with a hammer, You've got an electrical problem.

Offline kenneyginter

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Re: '77 cb750f2 cafe project
« Reply #57 on: March 26, 2012, 08:33:56 PM »
thanks to scott for the rotors, guys a genius. http://forums.sohc4.net/index.php?topic=67540.0



77' cb750f2 cafe project
build thread http://forums.sohc4.net/index.php?topic=82251.0

Offline kenneyginter

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Re: '77 cb750f2 cafe project
« Reply #58 on: March 26, 2012, 08:39:03 PM »
update: yes i am slow, but tires come in tomorrow and i will post some new pictures soon. this is my first build but every time i jump on hear i am more inspired. thanks for all the support. (need more money and time)
77' cb750f2 cafe project
build thread http://forums.sohc4.net/index.php?topic=82251.0

Offline kenneyginter

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Re: '77 cb750f2 cafe project
« Reply #59 on: April 12, 2013, 02:08:10 PM »
Ok everyone. I work fairly slowly. But here is where I am at. Still moving along after all this time. I need the support of you guys to keep going haha.



77' cb750f2 cafe project
build thread http://forums.sohc4.net/index.php?topic=82251.0

Offline Evening Echo

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Re: '77 cb750f2 cornstar rims
« Reply #60 on: May 05, 2013, 03:23:57 PM »
I seem to remember someone on the forum a while back talking about pulling the rivets but I can't remember if he actually did or what the outcome was.
I think this is the bike in question....




Sorry for the thread hijack. I too am working on two F2 builds and was looking at yours and saw this image. I have been trying to find a build link to this bike, is there one? There's a lot I really like about this bike and would like to find out more.

BTW, your blacked out comstars with alloy rims is exactly the way I want to go. I think the black spokes, then alloy rim with the black tyre looks really nice.
1924 Raleigh Model 2
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Honda CB750F2 (burnt out)
Honda CB750F2

Offline Retro Rocket

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Re: '77 cb750f2 cafe project
« Reply #61 on: May 05, 2013, 04:03:48 PM »
It is a members bike and there is a build thread but i haven't a clue where it is now....sorry
750 K2 1000cc
750 F1 970cc
750 Bitsa 900cc
If You can't fix it with a hammer, You've got an electrical problem.

Offline kenneyginter

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Re: '77 cb750f2 cafe project
« Reply #62 on: June 02, 2015, 12:33:23 PM »
Hey everyone, long time no talk. I need some help...

I got back to working on the bike and I am currently working on the wiring. The wiring harness was cut and I can't figure out which wires go where in the ignition - it doesn't seem to be in the book (wiring diagram either) can someone help me out?

I know this is a clip type unit that plugs into the ignition but it has been cut out. I am wiring it without the clip so I just need to know what colors go to which connector.
77' cb750f2 cafe project
build thread http://forums.sohc4.net/index.php?topic=82251.0

Offline madScientist

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Re: '77 cb750f2 cafe project
« Reply #63 on: June 02, 2015, 02:10:18 PM »
Unless someone beats me to it I'll check my wires when I get home tonight and post. unless you can decipher them from this photo...

You CAN do great things...with enough beer.


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77 cb750A (sold)
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Offline koendd

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Re: '77 cb750f2 cafe project
« Reply #64 on: June 02, 2015, 02:31:44 PM »
brown red black and white/brown I think
1972 cb750K2 brat
1976 cb360
1984 GPZ900R

Offline kenneyginter

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Re: '77 cb750f2 cafe project
« Reply #65 on: June 04, 2015, 04:27:33 PM »
the question is what order and connector do they go to?
77' cb750f2 cafe project
build thread http://forums.sohc4.net/index.php?topic=82251.0

Offline koendd

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Re: '77 cb750f2 cafe project
« Reply #66 on: June 05, 2015, 01:23:28 AM »
you can check with multimeter...

red is +12v , brown gets 12v when key is turned etc, one that leaves lights on when in key is turned to park etc.
1972 cb750K2 brat
1976 cb360
1984 GPZ900R

Offline kenneyginter

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Re: '77 cb750f2 cafe project
« Reply #67 on: September 08, 2015, 09:45:04 AM »
Hey everyone, I am looking to complete my wiring on my CB750f2. I have a new aftermarket tail light that seems to be giving me some trouble...so heres the deal.

Everything on my bike is currently wired and working properly, with one exception; the running light. The braking functionally works fine when it comes to the tail light but I cant get the running like on. The wiring from the harness into the headlight has a brown female connector and there seems to be no brown male connector that it attached to. Also I feel like wiring diagram I have in unclear if this is correct. My thoughts were that the short "jumper" wire must connect here to create a closed circuit but that effort only results in blown fuses. Looking for some help?

Again all blinkers, horn, starter, hi and low beam functions works great. Also the light works (dims when comparing to brake to brights) when clicked into "park" function so I know the light works. Any ideas?
77' cb750f2 cafe project
build thread http://forums.sohc4.net/index.php?topic=82251.0

Offline madmtnmotors

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Re: '77 cb750f2 cafe project
« Reply #68 on: September 08, 2015, 10:15:22 AM »
I believe you should have a brown with a blue stripe that connects to black. I believe this brown/blue will also have a colored band on it. I seem to think it was a yellow band for some reason, and there might be a corresponding black lead with a yellow band or stripe on the insulator?

Of course this brown/blue might also have a black band, I can't recall off the top of my head right now. It would be this evening before I could pull mine apart and look.


« Last Edit: September 14, 2015, 04:58:19 AM by madmtnmotors »
TAMTF...


Wilbur



Projects:
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"P.O. Debacle": http://forums.sohc4.net/index.php/topic,126692.msg1441661.html#msg1441661
F2/F3 O-rings: http://forums.sohc4.net/index.php?topic=113672.msg1300721#msg1300721
Cam Tower Studs: https://www.mcmaster.com/#93210a017/=t19sgp
Clean up that nasty harness: http://forums.sohc4.net/index.php?topic=137351.msg1549191#msg1549191
http://forums.sohc4.net/index.php/topic,148188.msg1688494.html#msg1688494
http://forums.sohc4.net/index.php/topic,139544.msg1579364.html#msg1579364
                                          
Charging system diagnosis: http://forums.sohc4.net/index.php?topic=1012.msg8345#msg8345
Get the manuals: http://manuals.sohc4.net/cb750k/
The Dragon: http://forums.sohc4.net/index.php?topic=45183.msg1571675#msg1571675
Headlight Switch: http://forums.sohc4.net/index.php?topic=113986.msg1283236#msg1283236
Branden's leak free top end thread: http://forums.sohc4.net/index.php?topic=107040.0
Engine Lifting Made Easy: http://forums.sohc4.net/index.php/topic,58210.msg1684742.html#msg1684742
                                      http://forums.sohc4.net/index.php/topic,100352.msg1675840.html#msg1675840
Static and Dynamic Timing: http://www.hondachopper.com/garage/carb_info/timing/timing1.html
Airbox Gasket Replacement: http://forums.sohc4.net/index.php/topic,114485.msg1290000.html#msg1290000
"Café" : http://forums.sohc4.net/index.php/topic,84697.msg953814.html#msg953814
PD Carb Choke Linkage: http://forums.sohc4.net/index.php/topic,100352.msg1669248.html#msg1669248
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Shorten your forks: http://vintage-and-classic-honda-s.456789.n3.nabble.com/How-to-shorten-forks-td4042465.html DO NOT CUT THE SPRINGS!
Clutch How To: http://vintage-and-classic-honda-s.456789.n3.nabble.com/How-to-change-and-adjust-a-clutch-SOHC-td4040391.html
Late model K7/K8/F2/F3 front sprocket cover removal: http://forums.sohc4.net/index.php/topic,178428.msg2072279.html#msg2072279
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Offline kenneyginter

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Re: '77 cb750f2 cafe project
« Reply #69 on: September 08, 2015, 10:31:06 AM »
If you could photo it and post it here that would be amazing. I seemed to have tried what you are describing but there are 2 black leads and I am curious how urs looks.
77' cb750f2 cafe project
build thread http://forums.sohc4.net/index.php?topic=82251.0

Offline madmtnmotors

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Re: '77 cb750f2 cafe project
« Reply #70 on: September 08, 2015, 10:52:19 AM »
Edited previous post. I had intended to include a mark-up of the wiring diagram.
TAMTF...


Wilbur



Projects:
"Evolution": http://forums.sohc4.net/index.php?topic=100352.0
"P.O. Debacle": http://forums.sohc4.net/index.php/topic,126692.msg1441661.html#msg1441661
F2/F3 O-rings: http://forums.sohc4.net/index.php?topic=113672.msg1300721#msg1300721
Cam Tower Studs: https://www.mcmaster.com/#93210a017/=t19sgp
Clean up that nasty harness: http://forums.sohc4.net/index.php?topic=137351.msg1549191#msg1549191
http://forums.sohc4.net/index.php/topic,148188.msg1688494.html#msg1688494
http://forums.sohc4.net/index.php/topic,139544.msg1579364.html#msg1579364
                                          
Charging system diagnosis: http://forums.sohc4.net/index.php?topic=1012.msg8345#msg8345
Get the manuals: http://manuals.sohc4.net/cb750k/
The Dragon: http://forums.sohc4.net/index.php?topic=45183.msg1571675#msg1571675
Headlight Switch: http://forums.sohc4.net/index.php?topic=113986.msg1283236#msg1283236
Branden's leak free top end thread: http://forums.sohc4.net/index.php?topic=107040.0
Engine Lifting Made Easy: http://forums.sohc4.net/index.php/topic,58210.msg1684742.html#msg1684742
                                      http://forums.sohc4.net/index.php/topic,100352.msg1675840.html#msg1675840
Static and Dynamic Timing: http://www.hondachopper.com/garage/carb_info/timing/timing1.html
Airbox Gasket Replacement: http://forums.sohc4.net/index.php/topic,114485.msg1290000.html#msg1290000
"Café" : http://forums.sohc4.net/index.php/topic,84697.msg953814.html#msg953814
PD Carb Choke Linkage: http://forums.sohc4.net/index.php/topic,100352.msg1669248.html#msg1669248
                                    http://forums.sohc4.net/index.php/topic,110931.msg1248354.html#msg1248354
                                    http://forums.sohc4.net/index.php/topic,48858.msg515204.html#msg515204
Follow up on your damn posts: http://forums.sohc4.net/index.php/topic,144305.msg1791605.html#msg1791605
Taiwanese Cam Chain Tensioners:  http://forums.sohc4.net/index.php/topic,155043.msg1774841.html#msg1774841
Gumtwo Seat Cover: http://forums.sohc4.net/index.php/topic,164440.msg1897366.html#msg1897366
Primary Drive: http://forums.sohc4.net/index.php/topic,166063.msg1919278.html#msg1919278
Tank Latch: http://forums.sohc4.net/index.php/topic,165975.msg1919495.html#msg1919495
Shorten your forks: http://vintage-and-classic-honda-s.456789.n3.nabble.com/How-to-shorten-forks-td4042465.html DO NOT CUT THE SPRINGS!
Clutch How To: http://vintage-and-classic-honda-s.456789.n3.nabble.com/How-to-change-and-adjust-a-clutch-SOHC-td4040391.html
Late model K7/K8/F2/F3 front sprocket cover removal: http://forums.sohc4.net/index.php/topic,178428.msg2072279.html#msg2072279
630 to 530 conversion: http://forums.sohc4.net/index.php/topic,180710.msg2094423.html#msg2094423

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Offline kenneyginter

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Re: '77 cb750f2 cafe project
« Reply #71 on: September 08, 2015, 11:17:10 AM »
So if I am reading that correctly, the female brown should remain open. Correct? I see it open in your diagram as well.
77' cb750f2 cafe project
build thread http://forums.sohc4.net/index.php?topic=82251.0

Offline kenneyginter

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Re: '77 cb750f2 cafe project
« Reply #72 on: September 08, 2015, 12:56:17 PM »
Also, are my turn signals supposed to be running turn signals as well? Currently they are not right now.
77' cb750f2 cafe project
build thread http://forums.sohc4.net/index.php?topic=82251.0

Offline madmtnmotors

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Re: '77 cb750f2 cafe project
« Reply #73 on: September 08, 2015, 05:14:52 PM »
Also, are my turn signals supposed to be running turn signals as well? Currently they are not right now.

Stock, all of the signal lights are amber. Rear running lights are almost universally required to be red, so the rear lights are a single filament signal light only, while the front facing signals are typically dual filament and serve as both running lights and signal lights.

May not get to the headlight bucket tonight, just got home after hanging with calj737 and CBertels looking over Chris's bike and bouncing ideas around about the amount of work he's got to do.
TAMTF...


Wilbur



Projects:
"Evolution": http://forums.sohc4.net/index.php?topic=100352.0
"P.O. Debacle": http://forums.sohc4.net/index.php/topic,126692.msg1441661.html#msg1441661
F2/F3 O-rings: http://forums.sohc4.net/index.php?topic=113672.msg1300721#msg1300721
Cam Tower Studs: https://www.mcmaster.com/#93210a017/=t19sgp
Clean up that nasty harness: http://forums.sohc4.net/index.php?topic=137351.msg1549191#msg1549191
http://forums.sohc4.net/index.php/topic,148188.msg1688494.html#msg1688494
http://forums.sohc4.net/index.php/topic,139544.msg1579364.html#msg1579364
                                          
Charging system diagnosis: http://forums.sohc4.net/index.php?topic=1012.msg8345#msg8345
Get the manuals: http://manuals.sohc4.net/cb750k/
The Dragon: http://forums.sohc4.net/index.php?topic=45183.msg1571675#msg1571675
Headlight Switch: http://forums.sohc4.net/index.php?topic=113986.msg1283236#msg1283236
Branden's leak free top end thread: http://forums.sohc4.net/index.php?topic=107040.0
Engine Lifting Made Easy: http://forums.sohc4.net/index.php/topic,58210.msg1684742.html#msg1684742
                                      http://forums.sohc4.net/index.php/topic,100352.msg1675840.html#msg1675840
Static and Dynamic Timing: http://www.hondachopper.com/garage/carb_info/timing/timing1.html
Airbox Gasket Replacement: http://forums.sohc4.net/index.php/topic,114485.msg1290000.html#msg1290000
"Café" : http://forums.sohc4.net/index.php/topic,84697.msg953814.html#msg953814
PD Carb Choke Linkage: http://forums.sohc4.net/index.php/topic,100352.msg1669248.html#msg1669248
                                    http://forums.sohc4.net/index.php/topic,110931.msg1248354.html#msg1248354
                                    http://forums.sohc4.net/index.php/topic,48858.msg515204.html#msg515204
Follow up on your damn posts: http://forums.sohc4.net/index.php/topic,144305.msg1791605.html#msg1791605
Taiwanese Cam Chain Tensioners:  http://forums.sohc4.net/index.php/topic,155043.msg1774841.html#msg1774841
Gumtwo Seat Cover: http://forums.sohc4.net/index.php/topic,164440.msg1897366.html#msg1897366
Primary Drive: http://forums.sohc4.net/index.php/topic,166063.msg1919278.html#msg1919278
Tank Latch: http://forums.sohc4.net/index.php/topic,165975.msg1919495.html#msg1919495
Shorten your forks: http://vintage-and-classic-honda-s.456789.n3.nabble.com/How-to-shorten-forks-td4042465.html DO NOT CUT THE SPRINGS!
Clutch How To: http://vintage-and-classic-honda-s.456789.n3.nabble.com/How-to-change-and-adjust-a-clutch-SOHC-td4040391.html
Late model K7/K8/F2/F3 front sprocket cover removal: http://forums.sohc4.net/index.php/topic,178428.msg2072279.html#msg2072279
630 to 530 conversion: http://forums.sohc4.net/index.php/topic,180710.msg2094423.html#msg2094423

Sent from my Tandy TRS-80!

Offline SOHC4 Cafe Racer Fan

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Re: '77 cb750f2 cafe project
« Reply #74 on: September 08, 2015, 05:43:43 PM »
Also, are my turn signals supposed to be running turn signals as well? Currently they are not right now.

Stock, all of the signal lights are amber. Rear running lights are almost universally required to be red, so the rear lights are a single filament signal light only, while the front facing signals are typically dual filament and serve as both running lights and signal lights.

May not get to the headlight bucket tonight, just got home after hanging with calj737 and CBertels looking over Chris's bike and bouncing ideas around about the amount of work he's got to do.

Not always the case. Many running lights on the rear of motorcycles include the indicators using a dual filament, so that they show a solid amber with a brighter turn signal.
1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold