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Author Topic: 1976 CB750F cafe build is finally finished  (Read 1304 times)

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Offline riffman12

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1976 CB750F cafe build is finally finished
« on: July 10, 2016, 06:59:10 PM »
so after almost exactly a year, this project is finally finished. Rode it all day today, high speed runs, twisties, around town. So much fun to ride!

Huge thank you to all of you who helped me through the way. Couldn't have done it without all of you. Here's some pics:










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Offline halllzy

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Re: 1976 CB750F cafe build is finally finished
« Reply #1 on: July 10, 2016, 07:37:46 PM »
Beauty!!

Sent from my Nexus 6P using Tapatalk

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Offline Calvin

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Re: 1976 CB750F cafe build is finally finished
« Reply #2 on: July 10, 2016, 07:38:41 PM »
Sexy
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Offline Ereyer

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Re: 1976 CB750F cafe build is finally finished
« Reply #3 on: July 11, 2016, 05:25:57 AM »
Really a beautiful bike.
Cheers,
Eric
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Offline flybox1

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Re: 1976 CB750F cafe build is finally finished
« Reply #4 on: July 11, 2016, 06:38:31 AM »
Looks real nice, riff  8)
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'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
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Offline Jerry Rxman Griffin aka MuthaF'er

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Re: 1976 CB750F cafe build is finally finished
« Reply #5 on: July 11, 2016, 08:29:34 AM »
Nothing short of BADASS!
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As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline riffman12

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Re: 1976 CB750F cafe build is finally finished
« Reply #6 on: July 11, 2016, 08:42:33 AM »
Thanks a lot guys! Very happy with it.


so after riding it all day yesterday, there's just one thing bugging me:

when I was on some higher speed roads, I look down at the front wheel and i can see it wobbling a little bit side to side at the tire / very outside of the rim. I have comstars by the way - not spokes.

At first I was worried the axle was coming loose or I didn't install the wheel bearings correctly, so I pulled over. I felt zero side to side play anywhere. Everything felt snug and the axle not coming apart or anything.

Started riding again, and noticed the brake rotor is dead straight all the way up to 50mph +. That would be wobbling as well if it were an axle / hub issue right?

I'm not getting any vibration through the bars and the bike is tracking perfectly straight.


What could be causing this? Incorrect balancing when the tire was put on?
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Offline Jerry Rxman Griffin aka MuthaF'er

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Re: 1976 CB750F cafe build is finally finished
« Reply #7 on: July 11, 2016, 11:22:15 AM »
Tire build mold outta whack? Re-install the tire for a better seat?
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As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline BomberMann650

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Re: 1976 CB750F cafe build is finally finished
« Reply #8 on: July 11, 2016, 02:07:07 PM »
Quote from: Jerry Rxman Griffin aka MuthaF'er on July 11, 2016, 11:22:15 AM
Tire build mold outta whack? Re-install the tire for a better seat?

+1
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Offline TomsK8resto

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Re: 1976 CB750F cafe build is finally finished
« Reply #9 on: July 11, 2016, 02:28:29 PM »
Great looking bike!


Tom
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Offline Ericcb750

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Re: 1976 CB750F cafe build is finally finished
« Reply #10 on: July 12, 2016, 02:48:31 AM »
Love the bike man! so clean too, How did you get your comstars nice and clean like that? Are they  painted/powdercoated? The engine and the exhaust look awesome too.... Congrats on finishing the build...These SOHC's are so freakin cool. Have fun
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Offline Bankerdanny

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Re: 1976 CB750F cafe build is finally finished
« Reply #11 on: July 12, 2016, 04:59:31 AM »
Love the silver engine. Much better looking than black with that paint.
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"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 PeWe

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Re: 1976 CB750F cafe build is finally finished
« Reply #12 on: July 12, 2016, 08:48:52 AM »
The bike look really good! The F model is the best  CB750 for this type of build.
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CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline riffman12

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Re: 1976 CB750F cafe build is finally finished
« Reply #13 on: July 12, 2016, 10:07:35 AM »
Thanks a lot guys! I need to have the rear tube replaced anyways since the valve stem broke the first time I went to fill it up  >:(

so I think I'll just take both wheels in and have them double check bead and balance

Tonight I'm going to change the oil and filter since I've been going off what the previous owner put in

Quote from: Ericcb750 on July 12, 2016, 02:48:31 AM
Love the bike man! so clean too, How did you get your comstars nice and clean like that? Are they  painted/powdercoated? The engine and the exhaust look awesome too.... Congrats on finishing the build...These SOHC's are so freakin cool. Have fun

Thanks buddy. I had the comstars powder coated in an anodized silver color. As close to stock as possible.
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Offline suprafabs

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Re: 1976 CB750F cafe build is finally finished
« Reply #14 on: July 12, 2016, 10:29:17 AM »
nice build guy, very clean
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Offline SKTP

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Re: 1976 CB750F cafe build is finally finished
« Reply #15 on: July 12, 2016, 10:56:25 AM »
looks great
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1978k rebuild thread http://forums.sohc4.net/index.php?topic=68423.0
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Offline greenjeans

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Re: 1976 CB750F cafe build is finally finished
« Reply #16 on: July 12, 2016, 11:11:58 AM »
I dig it.  Good color too.   You can try deflating the front tire and kinda pinch around it and reinflate it to see if that helps set the bead again.
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Yep, I'm the kid that figured out how to put things back together...eventually.
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