Author Topic: SoCal Mut-N-Chop CB750 - ITS DONE!!!!  (Read 81331 times)

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Offline mrrch

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Re: SoCal Mut-N-Chop CB750 Cafe - Oil Tank Finish - POLL
« Reply #100 on: February 13, 2011, 07:15:19 AM »
Where did you get the hose supplies?
my build

1977 CB750K WITH 1976 CB750F ENGINE

Offline wannabridin

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Re: SoCal Mut-N-Chop CB750 Cafe - Oil Tank Finish - POLL
« Reply #101 on: February 13, 2011, 10:38:01 AM »
Where did you get the hose supplies?

X2!!  also, VERY nice work!  looks a lot better than i thought!
1976 CB750K, currently under construction:
http://forums.sohc4.net/index.php?topic=64468.0

-And if you don't do it this year, you'll be one year older when you do...

Offline brycegp

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Re: SoCal Mut-N-Chop CB750 Cafe - Oil Tank Finish - POLL
« Reply #102 on: February 13, 2011, 11:25:40 AM »
Where did you get the hose supplies?

X2!!  also, VERY nice work!  looks a lot better than i thought!

The oil line supplies came from a little mom & pop hardware store in Burbank, CA.  $9/ft for braided oil line...and the fitting were cheap too.  I had to strip the blue/red anodizing...but whatever.

This little store is pretty amazing.  Its a "find anything you need" spot for the mad scientist. 
1971 CB750K/F - El Toro
El Toro Build Thread - http://forums.sohc4.net/index.php?topic=73552.0

Offline brycegp

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Re: SoCal Mut-N-Chop CB750 Cafe - Oil Tank Finish - POLL
« Reply #103 on: February 14, 2011, 04:13:43 PM »
1971 CB750K/F - El Toro
El Toro Build Thread - http://forums.sohc4.net/index.php?topic=73552.0

shalbleib

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Re: SoCal Mut-N-Chop CB750 Cafe - Oil Tank Finish - POLL
« Reply #104 on: February 15, 2011, 01:59:44 PM »
lookin cool bryce. and thanks for the info on the forks (talked to you fri). i think i've located some decent 450 forks which should be a little shorter to avoid the same issue you had w/ the 750s. good luck w/ it. i'll keep checkin in. and here's the CB I did (w/ much help) last year. http://www.bikeexif.com/honda-cb450-4

Offline brycegp

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Re: SoCal Mut-N-Chop CB750 Cafe - Oil Tank Finish - POLL
« Reply #105 on: March 03, 2011, 09:20:04 AM »
lookin cool bryce. and thanks for the info on the forks (talked to you fri). i think i've located some decent 450 forks which should be a little shorter to avoid the same issue you had w/ the 750s. good luck w/ it. i'll keep checkin in. and here's the CB I did (w/ much help) last year. http://www.bikeexif.com/honda-cb450-4


love that bike!  You still have it?
1971 CB750K/F - El Toro
El Toro Build Thread - http://forums.sohc4.net/index.php?topic=73552.0

Offline brycegp

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Re: SoCal Mut-N-Chop CB750 Cafe - Starting to wire the bike...
« Reply #106 on: March 03, 2011, 09:25:37 AM »
So it has begun...ugh...wiring the the bike...

Sorting out the stuff I want...


BUT...what is this thing?
« Last Edit: March 03, 2011, 09:28:49 AM by brycegp »
1971 CB750K/F - El Toro
El Toro Build Thread - http://forums.sohc4.net/index.php?topic=73552.0

Offline mrrch

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Re: SoCal Mut-N-Chop CB750 Cafe - Starting to wire it...
« Reply #107 on: March 03, 2011, 10:34:16 AM »
That's the diode for the clutch switch if I remember correctly.
my build

1977 CB750K WITH 1976 CB750F ENGINE

Offline brycegp

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Re: SoCal Mut-N-Chop CB750 Cafe - Starting to wire it...
« Reply #108 on: March 03, 2011, 10:57:13 AM »
My wiring harness is F1 but the diagram, pic'd below, is K1.  For the most part the systems are the same...but this diode is not on the diagram.  It is one of the few differences I've been able to find.

the teal/red, according to the diagram below, is oil switch.  It leads out to the oil light on the console...fine.

green/red is the neutral switch.  And it leads out to the neutral light on the console.  BUT ALSO it leads back to the solenoid. I think, here, it is a safety feature and kills the solenoid.  If the bike isn't in neutral, you can't use the electric start???

both are going into the diode.  what does it do?

« Last Edit: March 03, 2011, 11:01:02 AM by brycegp »
1971 CB750K/F - El Toro
El Toro Build Thread - http://forums.sohc4.net/index.php?topic=73552.0

Offline mrrch

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Re: SoCal Mut-N-Chop CB750 Cafe - Starting to wire it...
« Reply #109 on: March 03, 2011, 11:14:25 AM »
I looked into my manual and in the K6 wiring diagram it shows the G/R wire running to the clutch switch so it for starting it in gear but only when the clutch lever is pulled in.
my build

1977 CB750K WITH 1976 CB750F ENGINE

Offline brycegp

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Re: SoCal Mut-N-Chop CB750 Cafe - Starting to wire it...
« Reply #110 on: March 03, 2011, 12:03:12 PM »
I looked into my manual and in the K6 wiring diagram it shows the G/R wire running to the clutch switch so it for starting it in gear but only when the clutch lever is pulled in.

You are absolutely correct, good sir.  I just reviewed the F1 diagram...and found the diode combines "signals" from clutch and neutral switches to kill the solenoid of not in neutral AND clutch is engaged.

Regardless....DELETED.  using custom control and no clutch switch in the clutch lever.   :-\
1971 CB750K/F - El Toro
El Toro Build Thread - http://forums.sohc4.net/index.php?topic=73552.0

Offline brycegp

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Re: SoCal Mut-N-Chop CB750 Cafe - Starting to wire it...
« Reply #111 on: March 04, 2011, 11:32:40 AM »
anyone ever powder coat a gas tank???

Just curious...thinking of matching the powder coat on the swing arm.  Do the headlight, gas tank, oil tank and swing arm...all in the same color powder coat...

OR NOT.
1971 CB750K/F - El Toro
El Toro Build Thread - http://forums.sohc4.net/index.php?topic=73552.0

Offline wannabridin

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Re: SoCal Mut-N-Chop CB750 Cafe - Starting to wire it...
« Reply #112 on: March 04, 2011, 01:01:13 PM »
take your powdercoated parts to a paint shop and have them mix you up some paint to match the powder.  shouldn't be too hard.  you can use one of those preval sprayers.  they do a great job and then some spraymax clear on top!! 

preval: http://www.preval.com/ 

spraymax: http://www.repaintsupply.com/pd_2_part_2k_aerosol.cfm

i've heard of powdercoated tanks before, but never seen on in person.  talk to your powdercoater first.  just remember though, any dings or dents will show through.  you'll have to fix them and fill things in with lead or brazing wire first.  hope this helps!

oh ya, what are you going to go off of for wiring?  custom?  just replace it?
1976 CB750K, currently under construction:
http://forums.sohc4.net/index.php?topic=64468.0

-And if you don't do it this year, you'll be one year older when you do...

Offline brycegp

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Re: SoCal Mut-N-Chop CB750 Cafe - Starting to wire it...
« Reply #113 on: March 04, 2011, 01:19:58 PM »
oh ya, what are you going to go off of for wiring?  custom?  just replace it?

following an F1 wiring diagram...using wires from existing wiring harness so the colors stay accurate..deleting wires for components I'm deleting...removing all old connectors...replacing with new connectors...tail mounted components.
1971 CB750K/F - El Toro
El Toro Build Thread - http://forums.sohc4.net/index.php?topic=73552.0

Offline wannabridin

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Re: SoCal Mut-N-Chop CB750 Cafe - Starting to wire it...
« Reply #114 on: March 04, 2011, 05:29:11 PM »
keeping the starter?  i would buy a stock harness, but they're just so bulky with the piggyback connectors and stuff throughout.  but it would be nice to have one and just extend the wires for things.  especially with turn signals!  it's just hard to find anything other than a stock or an overly simplified chopper diagram.

i wish someone could show me their custom, starterless diagram w/ a Hondaman box, Reg/Rect combo unit and turn signals!!  haha
1976 CB750K, currently under construction:
http://forums.sohc4.net/index.php?topic=64468.0

-And if you don't do it this year, you'll be one year older when you do...

Offline brycegp

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Re: SoCal Mut-N-Chop CB750 Cafe - Starting to wire it...
« Reply #115 on: March 05, 2011, 09:37:25 AM »
keeping the starter?  i would buy a stock harness, but they're just so bulky with the piggyback connectors and stuff throughout.  but it would be nice to have one and just extend the wires for things.  especially with turn signals!  it's just hard to find anything other than a stock or an overly simplified chopper diagram.

i wish someone could show me their custom, starterless diagram w/ a Hondaman box, Reg/Rect combo unit and turn signals!!  haha

Well its taken me a couple hours studying the F1 wiring harness...but i've got a good handle on it.

What does the "Hondaman box" consist of?

The R/R combo has the same wiring as the originally separate units....they are just in the same casing.  But use the same 8 wires.
1971 CB750K/F - El Toro
El Toro Build Thread - http://forums.sohc4.net/index.php?topic=73552.0

Offline brycegp

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Re: SoCal Mut-N-Chop CB750 Cafe - Starting to wire it...
« Reply #116 on: March 14, 2011, 06:28:23 PM »
Had a WIRED WEEKEND!!  My brother came into town and we spent the weekend hold up in the garage wiring my bike.  It turned out pretty badass!!  Here's a recap...

I studied the existing wiring harness before beginning.


And the tail mount plans begin...  Did some light fabbing to the original mounting bracket to fit on the tail section.


New R/R unit and Solenoid...but kept the original fuse box just cuz...mounted up perfectly.


3am...too buzzed to solder.


Drilled a 1.5" hole w/ rubber grommet to run wires out of the rear section.




At little birdie decided to land on the floor of the garage at our feet...hung out for a while and then disappeared.


The tail section all finished...moving foward...


Under the tank...forgot to get a pic of it all harnessed up...



Getting everything into the headlight bucket.


Fitting the tail section over the electrical.



Fitting the headlight.



Haven't mounted the lights yet...but tested the system and no problems.  Can't test charging system till I get it running.



Fuel lines and exhaust...then I'll start it up!!

« Last Edit: March 14, 2011, 06:40:23 PM by brycegp »
1971 CB750K/F - El Toro
El Toro Build Thread - http://forums.sohc4.net/index.php?topic=73552.0

Offline Retro Rocket

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Re: SoCal Mut-N-Chop CB750 Cafe - Wiring FINISHED!!
« Reply #117 on: March 14, 2011, 06:34:11 PM »
Looking very cool mate..... ;)
750 K2 1000cc
750 F1 970cc
750 Bitsa 900cc
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Offline tweakin

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Re: SoCal Mut-N-Chop CB750 Cafe - Wiring FINISHED!!
« Reply #118 on: March 14, 2011, 06:36:57 PM »
Nice work, looks great.

3am and too buzzed to solder.....Love it.  

Offline rickyracer

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Re: SoCal Mut-N-Chop CB750 Cafe - Wiring FINISHED!!
« Reply #119 on: March 15, 2011, 05:40:37 PM »
Great job!
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Offline brycegp

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Re: SoCal Mut-N-Chop CB750 Cafe - Wiring FINISHED!!
« Reply #120 on: March 17, 2011, 02:16:11 PM »
Again...SERIOUSLY Honda??? 

Attempting to pull spark plugs...using a 1/2" Drive 18MM socket.  #1 and #4 easy...no problem.  But #2 and #3??  HA!

The socket fits down into the hole for #3...but cant reach the socket with the ratchet to get it out.  In #2, the socket won't even fit down in the hole.

Honda does it again...complete illogical design.  How have you guys solved this?
1971 CB750K/F - El Toro
El Toro Build Thread - http://forums.sohc4.net/index.php?topic=73552.0

Offline Greggo

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Re: SoCal Mut-N-Chop CB750 Cafe - Wiring FINISHED!!
« Reply #121 on: March 17, 2011, 02:43:42 PM »
Again...SERIOUSLY Honda??? 

Attempting to pull spark plugs...using a 1/2" Drive 18MM socket.  #1 and #4 easy...no problem.  But #2 and #3??  HA!

The socket fits down into the hole for #3...but cant reach the socket with the ratchet to get it out.  In #2, the socket won't even fit down in the hole.

Honda does it again...complete illogical design.  How have you guys solved this?

The $15 Honda spark plug tool.

Offline unitedguitar

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Re: SoCal Mut-N-Chop CB750 Cafe - Pulling the PLUG!!
« Reply #122 on: March 17, 2011, 03:27:03 PM »
I saw a guy bore out the inside of the fins around the spark plug holes to make them bigger. I personally use a ratchet with a breakover joint in it.
Ben Whitener

Offline mrbreeze

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Re: SoCal Mut-N-Chop CB750 Cafe - Wiring FINISHED!!
« Reply #123 on: March 18, 2011, 12:53:29 PM »
Again...SERIOUSLY Honda??? 

Attempting to pull spark plugs...using a 1/2" Drive 18MM socket.  #1 and #4 easy...no problem.  But #2 and #3??  HA!

The socket fits down into the hole for #3...but cant reach the socket with the ratchet to get it out.  In #2, the socket won't even fit down in the hole.

Honda does it again...complete illogical design.  How have you guys solved this?
Use a 3/8 socket....not 1/2. I have a 3/8, 6pt., 18mm deep Craftsman. Locking 3 in. extension. Loosen the plug, remove socket & extension.......take the plug the rest of the way out with a length of 3/8 in. fuel hose. Use fuel hose to reinstall plug. Turn till hose starts slipping on plug... turn the rest of the way in with socket & extension.......Easy cheesy!!! ;D ;D
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Offline brycegp

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Re: SoCal Mut-N-Chop CB750 Cafe - Pulling the PLUG!!
« Reply #124 on: March 18, 2011, 03:37:09 PM »
Thanks, mrbreeze!!  When I first tried with the 1/2 drive and it didn't work..I almost tried the 3/8 drive.  I didn't cuz I compare the two 18mm sockets and they were almost the same OD.  So I figure the 3/8 wouldn't work either.

But the 3/8 is just enough smaller than the 1/2 to drop in there. 

Chalk a big "DUH" up for me...

Thanks again!
1971 CB750K/F - El Toro
El Toro Build Thread - http://forums.sohc4.net/index.php?topic=73552.0