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Old Streetfighter Motorcycle Forum Post 01-03-2015, 09:42 PM   #1
JAGspeed
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Default 78 CB 750 Cafe Street Fighter

Started this project a little while back so I will get you guys caught up on my build. Started with a 78 CB750K. Turning it into a café fighter with modern forks and a single shock. Here are a couple of pics of what I started with. Frame was tweeked on this bike but I have straight one that I replaced it with. Tank is off of a CB550.
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Old Streetfighter Motorcycle Forum Post 01-03-2015, 09:48 PM   #2
jmartin1110
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Default Re: 78 CB 750 Cafe Street Fighter

Sub'd

1981 Honda SS Build
KZ1000 Discussion Thread
KZ1000 Build Thread


Quote:
Originally Posted by DrJellyFingers View Post
u gonna look so sexy naked.... I would say no homo, but totally homo since that that sentence can't not be homo
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Old Streetfighter Motorcycle Forum Post 01-03-2015, 09:56 PM   #3
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Default Re: 78 CB 750 Cafe Street Fighter

I am using a 03 CBR954 front end. I modified the steering stem to fit the CB frame. The swingarm is off a 97 CBR F3. Only had to do some minor mods to make that fit like making the pivot holes bigger in the frame. Also found a tail section that will work.
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Old Streetfighter Motorcycle Forum Post 01-03-2015, 09:56 PM   #4
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Default Re: 78 CB 750 Cafe Street Fighter

<---------- In before "shinyribs"

2017 build off sv650 build thread <---Click here

SV650 b.s.'n and post build off progress on the bike thread thread <---Click here


DR650 supermoto build <--click

2000 R6 build <--click

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Originally Posted by RS_Raz View Post
A bit of vaseline should lube your bush up real nice though. Just make sure that your shaft is a good fit.
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Old Streetfighter Motorcycle Forum Post 01-03-2015, 10:02 PM   #5
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Default Re: 78 CB 750 Cafe Street Fighter

But not before me

1981 Honda SS Build
KZ1000 Discussion Thread
KZ1000 Build Thread


Quote:
Originally Posted by DrJellyFingers View Post
u gonna look so sexy naked.... I would say no homo, but totally homo since that that sentence can't not be homo
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Old Streetfighter Motorcycle Forum Post 01-04-2015, 12:45 AM   #6
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shinyribs plays with their repper too muchshinyribs plays with their repper too muchshinyribs plays with their repper too muchshinyribs plays with their repper too muchshinyribs plays with their repper too muchshinyribs plays with their repper too muchshinyribs plays with their repper too muchshinyribs plays with their repper too muchshinyribs plays with their repper too muchshinyribs plays with their repper too muchshinyribs plays with their repper too much
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Default Re: 78 CB 750 Cafe Street Fighter

Quote:
Originally Posted by F'dup View Post
<---------- In before "shinyribs"


Why wasn't I notified of this?!?


Nice start man! Single cam sevunnfiddys are my favorite bike ever. Totally sub'd and digging this.

You may know this already, but the carb boots on your engine are no longer produced,so be careful. Get yourself some wintergreen oil (ebay has it). Put a cap full in to a pot of water and boil those boots for about 30 minutes. Don't let them touch the bottom of the pan. I hang mine off wires. They'll be soft as new. Just don't do it inside or it will run you out of the house. It's potent.
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Old Streetfighter Motorcycle Forum Post 01-04-2015, 03:38 AM   #7
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Default Re: 78 CB 750 Cafe Street Fighter

Quote:
Originally Posted by shinyribs View Post


Why wasn't I notified of this?!?


Nice start man! Single cam sevunnfiddys are my favorite bike ever. Totally sub'd and digging this.

You may know this already, but the carb boots on your engine are no longer produced,so be careful. Get yourself some wintergreen oil (ebay has it). Put a cap full in to a pot of water and boil those boots for about 30 minutes. Don't let them touch the bottom of the pan. I hang mine off wires. They'll be soft as new. Just don't do it inside or it will run you out of the house. It's potent.
I did this on my POS XJ600S refurb, and it works. Like, really works, as in, you won't believe the results.

But it stinks so bad you'll wish you never tried it indoors, and the smell hangs around for days and days, and gets into any soft furnishings. It also gets into the rubbers, and won't ever leave them. DAMHIKT.

Aaron, living in Gibraltar and riding a 2014 MSX125 (Grom) with a bunch of shiny shite on it. Slow n loud!
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Old Streetfighter Motorcycle Forum Post 01-07-2015, 12:38 AM   #8
JAGspeed
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Default Re: 78 CB 750 Cafe Street Fighter

I am using a set of 6 spoke Honda wheels, Rear is a CBR F3, Front is from a RC51. Both with the same spoke pattern. Had them both powder coated gloss black. The rear was a direct bolt on. The sprocket alignment is the same on the CBR F3 and 77-78 CB750's so that worked out well. The front RC51 wheel needed some mods to fit the CBR954 front end, I used CBR954 wheel bearings , modified the center bearing spacer and had to fab 2mm wider wheel spacers. Mounted the 954 330mm rotors, should stop good. Fitted the rims with a couple of Dunlop tires and mounted them up.
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Old Streetfighter Motorcycle Forum Post 01-09-2015, 10:19 PM   #9
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Default Re: 78 CB 750 Cafe Street Fighter

Here is a couple shots of the shock and mount. Figured out my rear suspension ratios. pivot and mounting points. I am using a CBR F4 shock and CBR F3 swingarm and linkage. Made some mounts and tacked them in place.
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Old Streetfighter Motorcycle Forum Post 01-12-2015, 11:23 AM   #10
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Default Re: 78 CB 750 Cafe Street Fighter

More progress. I cut the rear of the frame off and bent some tubing to fit the tail section. I also welded the top tubes back into the frame as they were cut out by the previous owner to remove the engine . I had to modify one tube to clear the petcock for the 550 tank and had to rework the triangle piece that connects the 3 tubes so the tank would clear it. I will clean all this up later as well as add some more bracing.
I used rear sets from a CBR600F3 and drilled them out for looks. Drilled and welded treaded mounts right to the frame.
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