Author Topic: '78 750K Bobber  (Read 8920 times)

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Offline Sixgunsrattlesnake

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'78 750K Bobber
« on: April 19, 2013, 08:16:25 AM »
iver been building/restoring/reviving old jap bikes for a few years now. mostly finding a poor bike rotting behind a barn for the last decade or more and getting back on the road with only what it needs to ride. started with a 78 twinstar, moved to an xs400s, did a couple kzs and my pride was a 71cb350K. i had been trying to get into a 1978 CB750 for a while and finially one crossed my path this witer on a trade deal (for a 83 virago 500 i was working on) and I couldn't say no. at this point i have pretty much got it road worthy, just need to sync the carbs, mess with the clutch a little more and we are good to go. registered her yesterday with antique tags.

heres a picture of how she sat when they PO dropped her off, title and all. and where she sits now.
« Last Edit: July 03, 2013, 10:39:04 PM by Sixgunsrattlesnake »
"He wore his gun outside his pants, for all the honest world to fear."

1993 CBR600F2
1978 CB750K
1978 XS400S
1978 CM185T
1971 CB350K

Offline Snakebyte

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Re: new member from Kansas
« Reply #1 on: April 19, 2013, 10:02:36 AM »
I like the second picture alot.

Offline Tews19

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Re: new member from Kansas
« Reply #2 on: April 20, 2013, 08:25:19 PM »
Very different.  What are the plans? Keep or sell?
1969 Honda CB750... Basket case
1970 Honda CB750 survivor.

Offline Sixgunsrattlesnake

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Re: new member from Kansas
« Reply #3 on: April 21, 2013, 04:51:14 PM »
The intention is always to keep. But i have been known to sell and barter off something i said i wouldnt. But right now as it stands, ive been trying to get into a 78 cb 750 for about 3 years so now that it has graced me with its presence id like to think i will keep it around
"He wore his gun outside his pants, for all the honest world to fear."

1993 CBR600F2
1978 CB750K
1978 XS400S
1978 CM185T
1971 CB350K

Offline Sixgunsrattlesnake

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Re: new member from Kansas
« Reply #4 on: April 22, 2013, 05:48:42 AM »
Well i got my clutch together and adjusted. I got some gaskets in yesterday and made a home made manometer. Ill get some pictures up later
"He wore his gun outside his pants, for all the honest world to fear."

1993 CBR600F2
1978 CB750K
1978 XS400S
1978 CM185T
1971 CB350K

Offline Sixgunsrattlesnake

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Re: new member from Kansas
« Reply #5 on: May 08, 2013, 07:38:10 PM »
Got it all squared away. Rode it to the next town to rub my completed bike in my buddies face as he still sits arguing with his uncompleted bike. 25 mile, like a dream. get to his driveway, pull in my clutch lever, BANG!.... not a good day....
"He wore his gun outside his pants, for all the honest world to fear."

1993 CBR600F2
1978 CB750K
1978 XS400S
1978 CM185T
1971 CB350K

Offline Jerry Rxman Griffin aka MuthaF'er

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Re: new member from Kansas
« Reply #6 on: May 08, 2013, 09:43:46 PM »
WTH happened to that clutch?!

Where in KS are you? Interested in joining in the Relay? You're in Team 4 territory.
As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline Sixgunsrattlesnake

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Re: new member from Kansas
« Reply #7 on: May 13, 2013, 03:32:02 PM »
I'm in north central. west of salina about 20 miles and 10 miles south of I-70. whats the details?
"He wore his gun outside his pants, for all the honest world to fear."

1993 CBR600F2
1978 CB750K
1978 XS400S
1978 CM185T
1971 CB350K

Offline Sixgunsrattlesnake

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Re: new member from Kansas
« Reply #8 on: May 13, 2013, 04:20:19 PM »
I figured out the clutch issue. Jam nut backed off, got the adjuster out of whack and broke the case when I pulled in the lever. Got a new cover coming in this week (so they say), got some new springs too.

figured it was time to address some other issues while I am down. I spent my time getting it road worthy, skipping the less important things.

my speedo quit on me at some point, pulled off the cable at the wheel and the steel cable inside came out in three pieces. No explanation needed there. got that on order too.

my front brake light switch was never there. tried to find another switch to wire up and decided I would replace the whole lever/master cylinder instead. got  me a brake lever/master cylinder assembly off a 660 raptor, complete with switch.


figure I'll describe what I have done up to this point, as I jumped on here a bit later in my build.

1st, I removed the Windjammer fairing and highway bars. If I were 15-20 years older, maybe I would keep it, but for now its in the shed until I decide what to do with it.

Then I bought new rubbers for it, went with a dual sport style because I am out in the sticks and live on dirt roads, but I do commute 20 miles on a county road to work. they are considered 20/80 (20 percent dirt/80 percent street)

I removed the shocks and put on some struts. I toyed with hardtailing it and I still might down the road, but my advantage with struts is if I decide to make a ride back east (or west for that matter) I can swap in a set of shocks for comfort.

I also removed the old seat (which fit perfectly but had "SUZUKI" printed on the rear) and toyed with several seat options. I fabbed up a bolt on solo springer seat. again another advantage to bolt on instead of the standard weld ons you find is that if I should decide to take a long ride with the missus I can unbolt what I have and put on the old one.

I ended up lowering the bike to 9 inches from swingarm bolt to frame bolt (in regards to shock mount bolts). I had to remove the center stand in doing so. wouldn't work with the height.

in removing the windjammer, I lost my headlight. Got a standard 7 inch round mounted with some 'cafe' style fork brackets, added a rock guard and away we went.

I rebuilt the carbs, found a stripped out mixture screw that was super fun to remove with a "not-so"-easy out. added some pod filters because the airbox was cracked and I wasn't spending the money for a new one.

before my big clutch explosion, I put in a set of new fiber plates. fought with that forever because the guy who had it before me had two extra plates in there, a fiber plate and a plate that looked like a fiber but had no pads.

I painted the wheels, tank and fenders and a few other odds and ends like covers and what not. added a sissy bar from a 71 cb350. although there is no seat for a sissy, I put sissy bars on so I can strap a pack to it. also hangs my medic bag converted to a tool bag so I can carry more tools (spare fuel hose, small bicycle pump, tube patches, fix-a-flat can, zip ties, rags, etc.)

I got rid of the big old round mirror and added a pair of cheap low profile mirrors ( I am not pleased with their performance)
I also scrapped the original taillight and blinkers. added an LED dual setup. very pleased with these. running lights, brake, turn signals and LP light.

I cut the bells off of the mufflers and added some turn-downs. also I wrapped the headers.

On my shakedown run I lost a footpeg. Didn't see that coming, and when I stopped to look for it my chase vehicle said it bounced into the tullies so there was no point searching any longer. put on a set of dirtbike pegs I had laying around and am pleased with them.

Thats about all I think. Other than valve adjustment and points. Still trying to come up with something for the left side cover. the PO didn't give me the side covers and at $100 bucks a set, I think I will stick with the exposed tank on the right and try and cut an old road sign for the left to hide the ugly wiring.



"He wore his gun outside his pants, for all the honest world to fear."

1993 CBR600F2
1978 CB750K
1978 XS400S
1978 CM185T
1971 CB350K

Offline Jerry Rxman Griffin aka MuthaF'er

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Re: '78 750K BLUE COLLAR REVIVAL
« Reply #9 on: May 13, 2013, 09:31:20 PM »
I'm in north central. west of salina about 20 miles and 10 miles south of I-70. whats the details?


Have not worked out details yet. Thinking NE riders can hook up with KS riders. That could be you and Pinhead then the relay could head eastward.
As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline Sixgunsrattlesnake

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Re: '78 750K BLUE COLLAR REVIVAL
« Reply #10 on: May 14, 2013, 05:29:57 AM »
Heck of a deal. Theres got to be some guys here from MO. KC is a good place to meet up. Getting any riders in on it from CO?
"He wore his gun outside his pants, for all the honest world to fear."

1993 CBR600F2
1978 CB750K
1978 XS400S
1978 CM185T
1971 CB350K

Offline 70CB750

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Re: '78 750K BLUE COLLAR REVIVAL
« Reply #11 on: May 14, 2013, 05:50:42 AM »
From Team 5, we have quite few people in MO:

Missouri:  NSHahdadi,Jefferson City; madscientist, Fenton

Kentucky:

Indiana: Tange911, Indianapolis;

Ohio: becken, Marblehead; cosmicvision, Ashtabula; Rio_CB750, Cleveland; mono, Toledo

West Virginia:

Virginia: Simpson, Virginia Beach; 70CB750 Nokesville; Rocking-M, Southern Virginia

DC: y2kc0wb0y

Maryland: 2strokeTRush, Baltimore;

Pennsylvania: . Kickstart, Philadelphia


http://forums.sohc4.net/index.php?topic=119507.0
Prokop
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I love it when parts come together.

Dorothy - my CB750
CB750K3F - The Red
Sidecar


CB900C

2006 KLR650

Offline Sixgunsrattlesnake

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Re: '78 750K BLUE COLLAR REVIVAL
« Reply #12 on: May 16, 2013, 07:32:58 AM »
I rescieved most of my parts today. The clutch lever/master cylinder assembly. Works great and looks better than the stock round resevoir.

Got my speedo cable, installing now.

Also, i compared my clutch springs to a new set i have. Old ones measure 39.84mm, manual says 30.5 is the smallest acceptable measurement. New ones are 44.40mm. Something is most definately wrong here...
"He wore his gun outside his pants, for all the honest world to fear."

1993 CBR600F2
1978 CB750K
1978 XS400S
1978 CM185T
1971 CB350K

Offline Sixgunsrattlesnake

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Re: '78 750K BLUE COLLAR REVIVAL
« Reply #13 on: May 16, 2013, 09:44:46 AM »
Got my speedo cable one. Awesome. Hooked up my wiring for my new front brake. Works great, looks nice. Decided to put my original clutch springs in until i can rigure out wth is up
"He wore his gun outside his pants, for all the honest world to fear."

1993 CBR600F2
1978 CB750K
1978 XS400S
1978 CM185T
1971 CB350K

Offline Sixgunsrattlesnake

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Re: '78 750K BLUE COLLAR REVIVAL
« Reply #14 on: May 19, 2013, 05:34:58 PM »
Got my clutch worked out. Thank God. Rode it down to the watering hole down the street. Came back and changed the oil. Figured another 30 mile shakedown was in order. The weather is kicking off around here and theres tornado watches in the area but what the hell. Ran ok, i could tell i need to adjust the carbs a little more. Runs great with the choke on, revs high with the choke off. But it powered through it. Got home, checked the oil... SMELLS LIKE GASOLINE!!! bah!
Parked it under the car port, grabbed a beer and a sandwich and decided that i would celebrate the little things. Beautiful ride, clutch feels good, bike rides good overal no electrical issues... Tomorrow I will kick and scream cause i really want to limp this thing through the season and wait til winter to tear it all the way down and rebuild it.
"He wore his gun outside his pants, for all the honest world to fear."

1993 CBR600F2
1978 CB750K
1978 XS400S
1978 CM185T
1971 CB350K

Offline Sixgunsrattlesnake

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Re: '78 750K BLUE COLLAR REVIVAL
« Reply #15 on: May 26, 2013, 07:09:36 PM »
Rode her to work and back the other day. rode ok. definitely need new points. cant even adjust what ive got. added some hardbags today, if you could call them that. actually, I just added one, havent got to the other one yet. makes for nice tool storage. And a place to lock up my heater while at work ;)
"He wore his gun outside his pants, for all the honest world to fear."

1993 CBR600F2
1978 CB750K
1978 XS400S
1978 CM185T
1971 CB350K

Offline Sixgunsrattlesnake

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Re: '78 750K BLUE COLLAR REVIVAL
« Reply #16 on: June 03, 2013, 07:13:00 AM »
DONE!
"He wore his gun outside his pants, for all the honest world to fear."

1993 CBR600F2
1978 CB750K
1978 XS400S
1978 CM185T
1971 CB350K

Offline Bankerdanny

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Re: '78 750K BLUE COLLAR REVIVAL
« Reply #17 on: June 03, 2013, 10:35:44 AM »
Very distinctive, you don't have to worry about running into another one like it at bike night.
"The problem with quotes on the Internet is that you never know if they're true" - Abraham Lincoln

Current: '76 CB750F. Previous:  '75 CB550F, 2007 Yamaha Vino 125 Scooter, '75 Harley FXE Superglide, '77 GL1000, '77 CB550k, '68 Suzuki K10 80, '68 Yamaha YR2, '69 BMW R69S, '71 Honda SL175, '02 Royal Enfield Bullet 500, '89 Yamaha FJ1200

Offline Sixgunsrattlesnake

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Re: '78 750K BLUE COLLAR REVIVAL
« Reply #18 on: June 04, 2013, 07:52:49 PM »
Thats kind of what I was going for. But now, after all this, I am seriously contemplating returning it to its original form. Shocks, big seat etc. I love it, but years of rodeo and motorcycle racing have rendered my body old. I found myself drooling over a newer bike the other day. Ive always loved old bikes, rigid frames and solo seats. Now I just want to ride. Im over the "character" of choppers and bobbers. Getting old sucks....
"He wore his gun outside his pants, for all the honest world to fear."

1993 CBR600F2
1978 CB750K
1978 XS400S
1978 CM185T
1971 CB350K

Offline Sixgunsrattlesnake

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Re: '78 750K BLUE COLLAR REVIVAL
« Reply #19 on: June 04, 2013, 08:53:34 PM »
Well, I completed all that I wanted to. All that I thought I wanted to anyway. The last few hundred miles I put on it really showed me something. Most of all, the direction I went with this build is not really what I thought it would be. So, I am going to spend the next few days returning it to what it was. Then I will start from "scratch" on a new vision.....
here goes something....
but first, one last look at what I did
"He wore his gun outside his pants, for all the honest world to fear."

1993 CBR600F2
1978 CB750K
1978 XS400S
1978 CM185T
1971 CB350K

Offline 70CB750

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Re: '78 750K BLUE COLLAR REVIVAL
« Reply #20 on: June 05, 2013, 03:07:15 AM »
What did you expect from it and what do you miss? 
Prokop
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Pure Gas - find ethanol free gas station near you

I love it when parts come together.

Dorothy - my CB750
CB750K3F - The Red
Sidecar


CB900C

2006 KLR650

Offline Sixgunsrattlesnake

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Re: '78 750K BLUE COLLAR REVIVAL
« Reply #21 on: June 05, 2013, 07:52:15 AM »
Ive always enjoyed the minimalist bobber style. But after riding it a while it does not do the bike justice. It needs suspension and a proper seating position.
Something more along these lines
"He wore his gun outside his pants, for all the honest world to fear."

1993 CBR600F2
1978 CB750K
1978 XS400S
1978 CM185T
1971 CB350K

Offline Sixgunsrattlesnake

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RESTART.... '78 CB750K
« Reply #22 on: June 06, 2013, 08:35:33 AM »
Well, here we go (AGAIN).

Time to start over. That was just a practice run. Time to REALLY build a 750 the way it was meant to be. I am over the bobber style. Uncomfortable as hell. Time to get back to my racing routes.

My new list of things to do...

Upgrade shocks, brakes and ignition for starters. I'll figure out the bodywork later. For now I need it to ride with some response. I had a 78 KZ1000 a few years ago that would put a serious hurting on the new sportsbikes of today. I had built up the suspension, added a modern braking system and rode it like a demon. I was racing flat track then, and I think I am going to get closer to those days with this old dog. I removed all the "Bobber" crap this morning. Here's where we are now....
"He wore his gun outside his pants, for all the honest world to fear."

1993 CBR600F2
1978 CB750K
1978 XS400S
1978 CM185T
1971 CB350K

Offline Bankerdanny

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Re: '78 750K BLUE COLLAR REVIVAL
« Reply #23 on: June 06, 2013, 08:53:14 AM »
That's the beauty of doing things without cutting up the bike, you can always reverse course and move in a different direction.
"The problem with quotes on the Internet is that you never know if they're true" - Abraham Lincoln

Current: '76 CB750F. Previous:  '75 CB550F, 2007 Yamaha Vino 125 Scooter, '75 Harley FXE Superglide, '77 GL1000, '77 CB550k, '68 Suzuki K10 80, '68 Yamaha YR2, '69 BMW R69S, '71 Honda SL175, '02 Royal Enfield Bullet 500, '89 Yamaha FJ1200

Offline Sixgunsrattlesnake

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Re: '78 750K BLUE COLLAR REVIVAL
« Reply #24 on: June 06, 2013, 09:09:33 AM »
no kidding. very glad i went the route i did. I had avoided cutting it up for future "RE-Sale" purposes. That and its a shame to cut up these old bikes. But now, I can reverse my stupid decisions and get back to the basics. I did just ditch the stock bars and put on a set of my old flat track bars. The seat is a goof though. I'd like to end up with a tracker style set up eventually. The seat on it now says SUZUKI on the rear. Fits perfectly and doesn't look terrible...for now.
"He wore his gun outside his pants, for all the honest world to fear."

1993 CBR600F2
1978 CB750K
1978 XS400S
1978 CM185T
1971 CB350K